ADOPTS WITH AMENDMENTS:

International Building Code 2012 (IBC 2012)

Heads up: There are no amended sections in this chapter.

Appendix N Referenced Construction Requirements

AMENDMENT
This section has been amended at the state or city level.
Preamble
  1. Background. Pursuant to ORS 455.010 and ORS 455.020, the Oregon Building Codes Division (the division) has been charged with the adoption of a state building code comprised of the specialty codes that govern the construction, reconstruction, alteration, and repair of buildings and other structures, and the installation of mechanical devices and equipment in those buildings and structures. One of the goals of the state building code is to establish predictability and uniformity in construction standards across the state.

    The Department of Justice provided advice on the division's authority and adoption practices of construction standards. The division was advised to print all construction requirements within the state building code. Accordingly, Appendix N now specifies standards for those state building code requirements previously published elsewhere and clarifies related scoping requirements.
  2. Effective Date. Effective January 1, 2018, building officials, plans examiners, and inspectors may not enforce construction requirements which are printed outside of the state building code including, but not limited to, construction requirements printed in the Oregon Fire Code.

    a. Effect on Cite-it Write-it Requirement. Pursuant to OAR 918-098-1900 (Cite-it Write-it Requirement) and the enforcement of the Oregon Structural Specialty Code, citations are limited to the following:

    1. Oregon Revised Statutes as noted in the Oregon Structural Specialty Code;
    2. Oregon Administrative Rules as noted in the Oregon Structural Specialty Code;
    3. The Oregon Structural Specialty Code and all adopted appendices, including Appendix N; and
    4. Specific standards adopted by reference in the Oregon Structural Specialty Code.
  3. References to Fire Code. All references to a "Fire Code" in the Oregon Structural Specialty Code are revised as annotated in Table N101.
UpCodes note: Table N101 (2014 OSSC REFERENCES) is not shown here, but all of its instructions to revise references to a "Fire Code" in the Oregon Structural Specialty Code has been incorporated in UpCodes' Oregon Structural Specialty Code.

Chapter N2 Definitions

AMENDMENT
This section has been amended at the state or city level.

Section N201 General

AMENDMENT
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N201.1 Scope

AMENDMENT
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Unless otherwise expressly stated, the following words and terms shall, for the purposes of these sections, have the meanings shown in Sections N201 and N202.

N201.2 Interchangeability

AMENDMENT
This section has been amended at the state or city level.
Words used in the present tense include the future; words stated in the masculine gender include the feminine and neuter; the singular number includes the plural and the plural, the singular.

N201.3 Terms Defined in Other Codes

AMENDMENT
This section has been amended at the state or city level.
Where terms are not defined in this section and are defined in Chapter 2 of this code or the Mechanical Code such terms shall have the meanings ascribed to them as in those codes.

N201.4 Terms Not Defined

AMENDMENT
This section has been amended at the state or city level.
Where terms are not defined through the methods authorized by this section, such terms shall have ordinarily accepted meanings such as the context implies. Merriam Webster's Collegiate Dictionary, 11th Edition, shall be considered as providing ordinarily accepted meanings.

Section N202 General Definitions

AMENDMENT
This section has been amended at the state or city level.
AEROSOL WAREHOUSE. A building used for warehousing aerosol products.

ALARM, NUISANCE. See "Nuisance alarm."

ALARM DEVICE, MULTIPLE STATION. See "Multiple Station Alarm Device."

ARRAY (These provisions). The configuration of storage. Characteristics considered in defining an array include the type of packaging, flue spaces, height of storage and compactness of storage.

ARRAY, CLOSED (These provisions). A storage configuration having a 6-inch (152 mm) or smaller width vertical flue space that restricts air movement through the stored commodity.

AUTOMATED RACK STORAGE. Automated rack storage is a stocking method whereby the movement of pallets, products, apparatus or systems are automatically controlled by mechanical or electronic devices.

BALED COTTON. See "Cotton."

BALED COTTON, DENSELY PACKED. See "Cotton."

BATTERY SYSTEM, STATIONARY LEAD ACID. A system which consists of three interconnected subsystems:
  1. A lead-acid battery.
  2. A battery charger.
  3. A collection of rectifiers, inverters, converters and associated electrical equipment as required for a particular application.
BATTERY TYPES.
Lithium-ion battery. A storage battery that consists of lithium ions embedded in a carbon graphite or nickel metaloxide substrate. The electrolyte is a carbonate mixture or a gelled polymer. The lithium ions are the charge carriers of the battery.

Lithium metal polymer battery. A storage battery that is comprised of nonaqueous liquid or polymerized electrolytes, which provide ionic conductivity between lithiated positive active material electrically separated from metallic lithium or lithiated negative active material.

Nickel cadmium (Ni-Cd) battery. An alkaline storage battery in which the positive active material is nickel oxide, the negative contains cadmium and the electrolyte is potassium hydroxide.

Nonrecombinant battery. A storage battery in which, under conditions of normal use, hydrogen and oxygen gasses created by electrolysis are vented into the air outside of the battery.

Recombinant battery. A storage battery in which, under conditions of normal use, hydrogen and oxygen gases created by electrolysis are converted back into water inside the battery instead of venting into the air outside of the battery.

Stationary storage battery. A group of electrochemical cells interconnected to supply a nominal voltage of DC power to a suitably connected electrical load, designed for service in a permanent location. The number of cells connected in a series determines the nominal voltage rating of the battery. The size of the cells determines the discharge capacity of the entire battery. After discharge, it may be restored to a fully charged condition by an electric current flowing in a direction opposite to the flow of current when the battery is discharged.

Valve-regulated lead-acid (VRLA) battery. A lead-acid battery consisting of sealed cells furnished with a valve that opens to vent the battery whenever the internal pressure of the battery exceeds the ambient pressure by a set amount. In VRLA batteries, the liquid electrolyte in the cells is immobilized in an absorptive glass mat (AGM cells or batteries) or by the addition of a gelling agent (gel cells or gelled batteries).

Vented (flooded) lead-acid battery. A lead-acid battery consisting of cells that have electrodes immersed in liquid electrolyte. Flooded lead-acid batteries have a provision for the user to add water to the cell and are equipped with a flame-arresting vent which permits the escape of hydrogen and oxygen gas from the cell in a diffused manner such that a spark, or other ignition source, outside the cell will not ignite the gases inside the cell.


BIN BOX. A five-sided container with the open side facing an aisle. Bin boxes are self-supporting or supported by a structure designed so that little or no horizontal or vertical space exists around the boxes.

BULK OXYGEN SYSTEM. An assembly of equipment, such as oxygen storage containers, pressure regulators, safety devices, vaporizers, manifolds and interconnecting piping, that has a storage capacity of more than 20,000 cubic feet (566 m3) of oxygen at normal temperature and pressure (NTP) including unconnected reserves on hand at the site. The bulk oxygen system terminates at the point where oxygen at service pressure first enters the supply line. The oxygen containers can be stationary or movable, and the oxygen can be stored as a gas or liquid.

BULK TRANSFER. The loading or unloading of flammable or combustible liquids from or between tank vehicles, tank cars or storage tanks.

CANOPY (This appendix). A structure or architectural projection of rigid construction over which a covering is attached that provides weather protection, identity or decoration, and may be structurally independent or supported by attachment to a building on one end and by not less than one stanchion on the outer end.

CARTON. A cardboard or fiberboard box enclosing a product.

CHEMICAL. An element, chemical compound or mixture of elements or compounds or both.

CHEMICAL NAME. The scientific designation of a chemical in accordance with the nomenclature system developed by the International Union of Pure and Applied Chemistry, the Chemical Abstracts Service rules of nomenclature, or a name which will clearly identify a chemical for the purpose of conducting an evaluation.

CLOSED CONTAINER. A container sealed by means of a lid or other device such that liquid, vapor or dusts will not escape from it under ordinary conditions of use or handling.

CLOSED SYSTEM. The use of a solid or liquid hazardous material involving a closed vessel or system that remains closed during normal operations where vapors emitted by the product are not liberated outside of the vessel or system and the product is not exposed to the atmosphere during normal operations; and all uses of compressed gases. Examples of closed systems for solids and liquids include product conveyed through a piping system into a closed vessel, system or piece of equipment.

COMBUSTIBLE DUST. Finely divided solid material which is 420 microns or less in diameter and which, when dispersed in air in the proper proportions, could be ignited by a flame, spark or other source of ignition. Combustible dust will pass through a U.S. No. 40 standard sieve.

COMMODITY. A combination of products, packing materials and containers.

COMPRESSED GAS CONTAINER. A pressure vessel designed to hold compressed gases at pressures greater than one atmosphere at 68°F (20°C) and includes cylinders, containers and tanks.

COMPRESSED GAS SYSTEM. An assembly of equipment designed to contain, distribute or transport compressed gases. It can consist of a compressed gas container or containers, reactors and appurtenances, including pumps, compressors and connecting piping and tubing.

COTTON.

Baled cotton. A natural seed fiber wrapped in and secured with industry-accepted materials, usually consisting of burlap, woven polypropylene, polyethylene or cotton or sheet polyethylene, and secured with steel, synthetic or wire bands, or wire; also includes linters (lint removed from the cottonseed) and motes (residual materials from the ginning process).

Baled cotton, densely packed. Cotton, made into banded bales, with a packing density of at least 22 pounds per cubic foot (360 kg/m3), and dimensions complying with the following: a length of 55 inches (1397 mm), a width of 21 inches (533.4 mm) and a height of 27.6 to 35.4 inches (701 to 899 mm).


CRYOGENIC FLUID. A fluid having a boiling point lower than -130°F (-89.9°C) at 14.7 pounds per square inch atmosphere (psia) (an absolute pressure of 101.3 kPa).

CYLINDER. A pressure vessel designed for pressures higher than 40 psia (275.6 kPa) and having a circular cross section. It does not include a portable tank, multi-unit tank car tank, cargo tank or tank car.

DESIGN PRESSURE. The maximum gauge pressure that a pressure vessel, device, component or system is designed to withstand safely under the temperature and conditions of use expected.

DETEARING. A process for rapidly removing excess wet coating material from a dipped or coated object or material by passing it through an electrostatic field.

DETONATION. An exothermic reaction characterized by the presence of a shock wave in the material which establishes and maintains the reaction. The reaction zone progresses through the material at a rate greater than the velocity of sound. The principal heating mechanism is one of shock compression. Detonations have an explosive effect.

DIP TANK. A tank, vat or container of flammable or combustible liquid in which articles or materials are immersed for the purpose of coating, finishing, treating and similar processes.

DRAFT CURTAIN. A structure arranged to limit the spread of smoke and heat along the underside of the ceiling or roof.

DRY CLEANING. The process of removing dirt, grease, paints and other stains from such items as wearing apparel, textiles, fabrics and rugs by use of nonaqueous liquids (solvents).

DRY CLEANING PLANT. A facility in which dry cleaning and associated operations are conducted, including the office, receiving area and storage rooms.

DRY CLEANING ROOM. An occupiable space within a building used for performing dry cleaning operations, the installation of solvent-handling equipment or the storage of dry cleaning solvents.

DRY CLEANING SYSTEM (These provisions). Machinery or equipment in which textiles are immersed or agitated in solvent or in which dry cleaning solvent is extracted from textiles.

EARLY SUPPRESSION FAST-RESPONSE (ESFR) SPRINKLER. A sprinkler listed for early suppression fast response performance.

ELECTROSTATIC FLUIDIZED BED. A container holding powder coating material that is aerated from below so as to form an air-supported expanded cloud of such material that is electrically charged with a charge opposite to that of the object to be coated. Such object is transported through the container immediately above the charged and aerated materials in order to be coated.

EMERGENCY SHUTOFF VALVE. A valve designed to shut off the flow of gases or liquids.

EMERGENCY SHUTOFF VALVE, AUTOMATIC. A failsafe automatic-closing valve designed to shut off the flow of gases or liquids initiated by a control system that is activated by automatic means.

EMERGENCY SHUTOFF VALVE, MANUAL. A manually operated valve designed to shut off the flow of gases or liquids.

EXCESS FLOW CONTROL. A fail-safe system or other approved means designed to shut off flow caused by a rupture in pressurized piping systems.

EXHAUSTED ENCLOSURE. An appliance or piece of equipment which consists of a top, a back and two sides providing a means of local exhaust for capturing gases, fumes, vapors and mists. Such enclosures include laboratory hoods, exhaust fume hoods and similar appliances and equipment used to retain and exhaust locally the gases, fumes, vapors and mists that could be released. Rooms or areas provided with general ventilation, in themselves, are not exhausted enclosures.

EXPLOSIVE MATERIAL. The term "explosive" material means explosives, blasting agents and detonators.

EXTRA-HIGH-RACK COMBUSTIBLE STORAGE. Storage on racks of Class I, II, III or IV commodities which exceed 40 feet (12 192 mm) in height and storage on racks of high-hazard commodities which exceed 30 feet (9144 mm) in height.

FACILITY. A building or use in a fixed location including exterior storage areas for flammable and combustible substances and hazardous materials, piers, wharves, tank farms and similar uses. This term includes recreational vehicles, mobile home and manufactured housing parks, sales and storage lots.

FINES. Small pieces or splinters of wood byproducts that will pass through a 0.25-inch (6.4 mm) screen.

[B] FLAME SPREAD INDEX. A comparative measure, expressed as a dimensionless number, derived from visual measurements of the spread of flame versus time for a material tested in accordance with ASTM E84 or UL 723.

FLAMMABLE CRYOGENIC FLUID. A cryogenic fluid that is flammable in its vapor state.

FLAMMABLE FINISHES. Coatings to articles or materials in which the material being applied is a flammable liquid, combustible liquid, combustible powder, fiberglass resin or flammable or combustible gel coating.

FLAMMABLE VAPOR AREA. An area in which the concentration of flammable constituents (vapor, gas, fume, mist or dust) in air exceeds 25 percent of their lower flammable limit (LFL) because of the flammable finish processes operation. It shall include:
  1. The interior of spray booths.
  2. The interior of ducts exhausting from spraying processes.
  3. Any area in the direct path of spray or any area containing dangerous quantities of air-suspended powder, combustible residue, dust, deposits, vapor or mists as a result of spraying operations.
  4. The area in the vicinity of dip tanks, drain boards or associated drying, conveying or other equipment during operation or shutdown periods.
The building official is authorized to determine the extent of the flammable vapor area, taking into consideration the material characteristics of the flammable materials, the degree of sustained ventilation and the nature of the operations.

FLOAT. A floating structure normally used as a point of transfer for passengers and goods, or both, for mooring purposes.

FLUE SPACES.

Longitudinal flue space. The flue space between rows of storage perpendicular to the direction of loading.

Transverse flue space. The space between rows of storage parallel to the direction of loading.


FLUIDIZED BED. A container holding powder coating material that is aerated from below so as to form an airsupported expanded cloud of such material through which the preheated object to be coated is immersed and transported.

FURNACE CLASS A. An oven or furnace that has heat utilization equipment operating at approximately atmospheric pressure wherein there is a potential explosion or fire hazard that could be occasioned by the presence of flammable volatiles or combustible materials processed or heated in the furnace.

Note: Such flammable volatiles or combustible materials can, for instance, originate from the following:

  1. Paints, powders, inks, and adhesives from finishing processes, such as dipped, coated, sprayed and impregnated materials.
  2. The substrate material.
  3. Wood, paper and plastic pallets, spacers or packaging materials.
  4. Polymerization or other molecular rearrangements.
Potentially flammable materials, such as quench oil, waterborne finishes, cooling oil or cooking oils, that present a hazard are ventilated according to Class A standards.


FURNACE CLASS B. An oven or furnace that has heat utilization equipment operating at approximately atmospheric pressure wherein there are no flammable volatiles or combustible materials being heated.

FURNACE CLASS C. An oven or furnace that has a potential hazard due to a flammable or other special atmosphere being used for treatment of material in process. This type of furnace can use any type of heating system and includes a special atmosphere supply system. Also included in the Class C classification are integral quench furnaces and molten salt bath furnaces.

FURNACE CLASS D. An oven or furnace that operates at temperatures from above ambient to over 5,000°F (2760°C) and at pressures normally below atmospheric using any type of heating system. These furnaces can include the use of special processing atmospheres.

GAS DETECTION SYSTEM, CONTINUOUS. See "Continuous gas detection system."

HIGH-PILED COMBUSTIBLE STORAGE. Storage of combustible materials in closely packed piles or combustible materials on pallets, in racks or on shelves where the top of storage is greater than 12 feet (3658 mm) in height. When required by the building official, high-piled combustible storage also includes certain high-hazard commodities, such as rubber tires, Group A plastics, flammable liquids, idle pallets and similar commodities, where the top of storage is greater than 6 feet (1829 mm) in height.

HIGH-PILED STORAGE AREA. An area within a building which is designated, intended, proposed or actually used for high-piled combustible storage.

HIGHLY VOLATILE LIQUID. A liquefied compressed gas with a boiling point of less than 68°F (20°C).

HOGGED MATERIALS. Wood waste materials produced from the lumber production process.

HPM FACILITY. See "Semiconductor fabrication facility."

INHABITED BUILDING. A building regularly occupied in whole or in part as a habitation for people, or any place of religious worship, schoolhouse, railroad station, store or other structure where people are accustomed to assemble, except any building or structure occupied in connection with the manufacture, transportation, storage or use of explosive materials.

IRRITANT. A chemical which is not corrosive, but which causes a reversible inflammatory effect on living tissue by chemical action at the site of contact. A chemical is a skin irritant if, when tested on the intact skin of albino rabbits by the methods of CPSC 16 CFR Part 1500.41 for an exposure of four or more hours or by other appropriate techniques, it results in an empirical score of 5 or more. A chemical is classified as an eye irritant if so determined under the procedure listed in CPSC 16 CFR Part 1500.42 or other approved techniques.

LIMITED SPRAYING SPACE. An area in which operations for touch-up or spot painting of a surface area of 9 square feet (0.84 m2) or less are conducted.

LIQUEFIED PETROLEUM GAS (LP-gas). A material which is composed predominantly of the following hydrocarbons or mixtures of them: propane, propylene, butane (normal butane or isobutane) and butylenes.

LIQUID. A material having a melting point that is equal to or less than 68°F (20°C) and a boiling point which is greater than 68°F (20°C) at 14.7 pounds per square inch absolute (psia) (101 kPa). When not otherwise identified, the term "liquid" includes both flammable and combustible liquids.

LIQUID STORAGE ROOM. A room classified as a Group H-3 occupancy used for the storage of flammable or combustible liquids in a closed condition.

LIQUID STORAGE WAREHOUSE. A building classified as a Group H-2 or H-3 occupancy used for the storage of flammable or combustible liquids in a closed condition.

LONGITUDINAL FLUE SPACE. See "Flue Space— Longitudinal."

LOW-PRESSURE TANK. A storage tank designed to withstand an internal pressure greater than 0.5 pounds per square inch gauge (psig) (3.4 kPa) but not greater than 15 psig (103.4 kPa).

LOWER EXPLOSIVE LIMIT (LEL). See "Lower flammable limit."

MAGAZINE. A building, structure or container, other than an operating building, approved for storage of explosive materials.

Indoor. A portable structure, such as a box, bin or other container, constructed as required for Type 2, 4 or 5 magazines in accordance with NFPA 495, NFPA 1124 or DOTy 27 CFR Part 55 so as to be fire resistant and theft resistant.

Type 1. A permanent structure, such as a building or igloo, that is bullet resistant, fire resistant, theft resistant, weather resistant and ventilated in accordance with the requirements of NFPA 495, NFPA 1124 or DOTy 27 CFR Part 55.

Type 2. A portable or mobile structure, such as a box, skidmagazine, trailer or semitrailer, constructed in accordance with the requirements of NFPA 495, NFPA 1124 or DOTy 27 CFR Part 55 that is fire resistant, theft resistant, weather resistant and ventilated. If used outdoors, a Type 2 magazine is also bullet resistant.

Type 3. A fire resistant, theft resistant and weather resistant "day box" or portable structure constructed in accordance with NFPA 495, NFPA 1124 or DOTy 27 CFR Part 55 used for the temporary storage of explosive materials.

Type 4. A permanent, portable or mobile structure such as a building, igloo, box, semitrailer or other mobile container that is fire resistant, theft resistant and weather resistant and constructed in accordance with NFPA 495, NFPA 1124 or DOTy 27 CFR Part 55.

Type 5. A permanent, portable or mobile structure such as a building, igloo, box, bin, tank, semitrailer, bulk trailer, tank trailer, bulk truck, tank truck or other mobile container that is theft resistant, which is constructed in accordance with NFPA 495, NFPA 1124 or DOTy 27 CFR Part 55.


MAGNESIUM. The pure metal and alloys, of which the major part is magnesium.

MANUAL STOCKING METHODS. Stocking methods utilizing ladders or other nonmechanical equipment to move stock

MATERIAL SAFETY DATA SHEET (MSDS). Information concerning a hazardous material which is prepared in accordance with the provisions of DOL 29 CFR Part 1910.1200 or in accordance with the provisions of a federally approved state OSHA plan.

MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA. The maximum amount of a hazardous material allowed to be stored or used within a control area inside a building or an outdoor control area. The maximum allowable quantity per control area is based on the material state (solid, liquid or gas) and the material storage or use conditions.

MECHANICAL STOCKING METHODS. Stocking methods utilizing motorized vehicles or hydraulic jacks to move stock.

MEMBRANE STRUCTURE. An air-inflated, air-supported, cable or frame-covered structure not otherwise defined as a tent.

METAL HYDRIDE. A generic name for compounds composed of metallic element(s) and hydrogen.

METAL HYDRIDE STORAGE SYSTEM. A closed system consisting of a group of components assembled as a package to contain metal-hydrogen compounds for which there exists an equilibrium condition where the hydrogen absorbing metal alloy(s), hydrogen gas and the metal-hydrogen compound(s) coexist and where only hydrogen gas is released from the system in normal use.

NONCOMBUSTIBLE. A material that, in the form in which it is used and under the conditions anticipated, does not ignite, burn, support combustion, or release flammable vapors, when subject to fire or heat. Materials that are reported as passing ASTM E136, Standard Test for Behavior of Materials in a vertical Tube Furnace at 750°C, are considered noncombustible materials. For the purposes of this code any material that does not meet this definition of noncombustible shall be deemed as combustible.

ORGANIC COATING. A liquid mixture of binders such as alkyd, nitrocellulose, acrylic or oil, and flammable and combustible solvents such as hydrocarbon, ester, ketone or alcohol, which, when spread in a thin film, convert to a durable protective and decorative finish.'

Unclassified detonable. Organic peroxides that are capable of detonation. These peroxides pose an extremely highexplosion hazard through rapid explosive decomposition.

OUTDOOR CONTROL AREA. An outdoor area that contains hazardous materials in amounts not exceeding the maximum allowable quantities of Table 307.1(1) of this code.

[A]OWNER (This Section). A corporation, firm, partnership, association, organization and any other group acting as a unit, or a person who has legal title to any structure or premises with or without accompanying actual possession thereof, and shall include the duly authorized agent or attorney, a purchaser, devisee, fiduciary and any person having a vested or contingent interest in the premises in question.

OXIDIZING CRYOGENIC FLUID. An oxidizing gas in the cryogenic state.

OZONE-GAS GENERATOR. Equipment which causes the production of ozone.

PASS-THROUGH. An enclosure installed in a wall with a door on each side that allows chemicals, HPM, equipment, and parts to be transferred from one side of the wall to the other.

PERMISSIBLE EXPOSURE LIMIT (PEL). The maximum permitted 8-hour time-weighted-average concentration of an air-borne contaminant. The exposure limits to be utilized are those published in DOL 29 CFR Part 1910.1000.

The Recommended Exposure Limit (REL) concentrations published by the U.S. National Institute for Occupational Safety and Health (NIOSH), Threshold Limit Value-Time Weighted Average (TLV-TWA) concentrations published by the American Conference of Governmental Industrial Hygienists (ACGIH), Workplace Environmental Exposure Level (WEEL) Guides published by the American Industrial Hygiene Association (AIHA), and other approved, consistent measures are allowed as surrogates for hazardous substances not listed in DOL 29 CFR Part 1910.1000.

PLYWOOD AND VENEER MILLS. Facilities where raw wood products are processed into finished wood products, including waferboard, oriented strandboard, fiberboard, composite wood panels and plywood.

PRESSURE VESSEL. A closed vessel designed to operate at pressures above 15 psig (103 kPa).

PRIMARY CONTAINMENT. The first level of containment, consisting of the inside portion of that container which comes into immediate contact on its inner surface with the material being contained.

PROCESS TRANSFER. The transfer of flammable or combustible liquids between tank vehicles or tank cars and process operations. Process operations may include containers, tanks, piping and equipment.

PROPELLANT. The liquefied or compressed gas in an aerosol container that expels the contents from an aerosol container when the valve is actuated. A propellant is considered flammable if it forms a flammable mixture with air, or if a flame is self-propagating in a mixture with air.

PUBLIC TRAFFIC ROUTE (PTR). Any public street, road, highway, navigable stream or passenger railroad that is used for through traffic by the general public.

PYROPHORIC. A chemical with an autoignition temperature in air, at or below a temperature of 130°F (54°C).

PYROTECHNIC COMPOSITION. A chemical mixture that produces visible light displays or sounds through a selfpropagating, heat-releasing chemical reaction which is initiated by ignition.

QUANTITY-DISTANCE (Q-D). The quantity of explosive material and separation distance relationships providing protection. These relationships are based on levels of risk considered acceptable for the stipulated exposures and are tabulated in the appropriate Q-D tables. The separation distances specified afford less than absolute safety:

Inhabited building distance (IBD). The minimum separation distance between an operating building or magazine containing explosive materials and an inhabited building or site boundary.

Intermagazine distance (IMD). The minimum separation distance between magazines.

Intraline distance (ILD) or Intraplant distance (IPD). The distance to be maintained between any two operating buildings on an explosives manufacturing site when at least one contains or is designed to contain explosives, or the distance between a magazine and an operating building.

Minimum separation distance (D0). The minimum separation distance between adjacent buildings occupied in conjunction with the manufacture, transportation, storage or use of explosive materials where one of the buildings contains explosive materials and the other building does not.


RAW PRODUCT. A mixture of natural materials such as tree, brush trimmings, or waste logs and stumps.

RECYCABLE PAPER AND PLASTIC MATERIALS. Any paper or plastic that would otherwise be a useless, unwanted or discarded material, except for the fact the material still has useful physical or chemical properties after serving a specific purpose, and the material has been kept separate from rubbish and waste materials.

REFRIGERANT (These provisions). The fluid used for heat transfer in a refrigeration system; the refrigerant absorbs heat and transfers it at a higher temperature and a higher pressure, usually with a change of state.

[M] REFRIGERATING (REFRIGERATION) SYSTEM. A combination of interconnected refrigerant-containing parts constituting one closed refrigerant circuit in which a refrigerant is circulated for the purpose of extracting heat.

REMOTELY LOCATED, MANUALLY ACTIVATED SHUTDOWN CONTROL. A control system that is designed to initiate shutdown of the flow of gases or liquids that is manually activated from a point located some distance from the delivery system.

REPAIR GARAGE. A building, structure or portion thereof used for servicing or repairing motor vehicles.

RESIN APPLICATION AREA. An area where reinforced plastics are used to manufacture products by hand lay-up or spray-fabrication methods.

RETAIL DISPLAY AREA. The area of a Group M occupancy open for the purpose of viewing or purchasing merchandise offered for sale. Individuals in such establishments are free to circulate among the items offered for sale which are typically displayed on shelves, racks or the floor.

ROLL COATING. The process of coating, spreading and impregnating fabrics, paper or other materials as they are passed directly through a tank or trough containing flammable or combustible liquids, or over the surface of a roller revolving partially submerged in a flammable or combustible liquid.

RUBBISH (TRASH). Combustible and noncombustible waste materials, including residue from the burning of coal, wood, coke or other combustible material, paper, rags, cartons, tin cans, metals, mineral matter, glass crockery, dust and discarded refrigerators, and heating, cooking or incinerator type appliances.

SECONDARY CONTAINMENT. That level of containment that is external to and separate from primary containment.

SEGREGATED. Storage in the same room or inside area, but physically separated by distance from incompatible materials.

SEMICONDUCTOR FABRICATION FACILITY. A building or a portion of a building in which electrical circuits or devices are created on solid crystalline substances having electrical conductivity greater than insulators but less than conductors. These circuits or devices are commonly known as semiconductors.

SERVICE CORRIDOR. A fully enclosed passage used for transporting HPM and purposes other than required means of egress.

SHELF STORAGE. Storage on shelves less than 30 inches (762 mm) deep with the distance between shelves not exceeding 3 feet (914 mm) vertically. For other shelving arrangements, see the requirements for rack storage.

SOLID SHELVING. Shelving that is solid, slatted or of other construction located in racks and which obstructs sprinkler discharge down into the racks.

SOLVENT DISTILLATION UNIT. An appliance that receives contaminated flammable or combustible liquids and which distills the contents to remove contaminants and recover the solvents.

SOLVENT OR LIQUID CLASSIFICATIONS. A method for classifying solvents or liquids according to the following classes:

Class I solvents. Liquids having a flash point below 100°F (38°C).

Class II solvents. Liquids having a flash point at or above 100°F (38°C) and below 140°F (60°C).

Class IIIA solvents. Liquids having a flash point at or above 140°F (60°C) and below 200°F (93°C).

Class IIIB solvents. Liquids having a flash point at or above 200°F (93°C).

Class IV solvents. Liquids classified as nonflammable.


SPRAY BOOTH. A mechanically ventilated appliance of varying dimensions and construction provided to enclose or accommodate a spraying operation and to confine and limit the escape of spray vapor and residue and to exhaust it safely.

SPRAY ROOM. A room designed to accommodate spraying operations, constructed in accordance this code and separated from the remainder of the building by a minimum 1-hour fire barrier.

SPRAYING SPACE. An area in which dangerous quantities of flammable vapors or combustible residues, dusts or deposits are present due to the operation of spraying processes. The building official is authorized to define the limits of the spraying space in any specific case.

SUPERSTRUCTURE. That portion of the construction of a pier or wharf above the deck.

SYSTEM. An assembly of equipment consisting of a tank, container or containers, appurtenances, pumps, compressors and connecting piping.

TANK. A vessel containing more than 60 gallons (227 L).

TANK, ATMOSPHERIC. A storage tank designed to operate at pressures from atmospheric through 1.0 pound per square inch gauge (760 mm Hg through 812 mm Hg) measured at the top of the tank.

TANK, PORTABLE. A packaging of more than 60-gallon (227 L) capacity and designed primarily to be loaded into or on or temporarily attached to a transport vehicle or ship and equipped with skids, mountings or accessories to facilitate handling of the tank by mechanical means. It does not include any cylinder having less than a 1,000-pound (454 kg) water capacity, cargo tank, tank car tank or trailers carrying cylinders of more than 1,000-pound (454 kg) water capacity.

TANK, PRIMARY. A listed atmospheric tank used to store liquid. See "Primary containment."

TANK, PROTECTED ABOVE GROUND. A tank listed in accordance with UL 2085 consisting of a primary tank provided with protection from physical damage and fire-resistive protection from a high-intensity liquid pool fire exposure. The tank may provide protection elements as a unit or may be an assembly of components, or a combination thereof.

TANK, STATIONARY. Packaging designed primarily for stationary installations not intended for loading, unloading or attachment to a transport vehicle as part of its normal operation in the process of use. It does not include cylinders having less than a 1,000-pound (454 kg) water capacity.

TANK VEHICLE. A vehicle other than a railroad tank car or boat, with a cargo tank mounted thereon or built as an integral part thereof, used for the transportation of flammable or combustible liquids, LP-gas or hazardous chemicals. Tank vehicles include self-propelled vehicles and full trailers and semitrailers, with or without motive power, and carrying part or all of the load.

TIMBER AND LUMBER PRODUCTION FACILITIES. Facilities where raw wood products are processed into finished wood products.

TOOL. A device, storage container, workstation or process machine used in a fabrication area.

TRANSVERSE FLUE SPACE. See "Flue space— Transverse."

TRASH. See "Rubbish."

UNAUTHORIZED DISCHARGE. A release or emission of materials in a manner which does not conform to the provisions of this code or applicable public health and safety regulations.

[M] VENTILATION. The natural or mechanical process of supplying conditioned or unconditioned air to, or removing such air from, any space.

VESSEL. A motorized watercraft, other than a seaplane on the water, used or capable of being used as a means of transportation. Nontransportation vessels, such as houseboats and boathouses, are included in this definition.

Chapter N3 General Requirements

AMENDMENT
This section has been amended at the state or city level.

Section N301 [304] Combustible Waste Material

AMENDMENT
This section has been amended at the state or city level.

N301.1 [304.1.3] Space Underneath Seats

AMENDMENT
This section has been amended at the state or city level.
Spaces underneath grandstand and bleacher seats shall not be used for the storage of combustible and flammable materials. Except where enclosed in not less than 1-hour fire-resistance-rated construction in accordance with this code, spaces underneath grandstand and bleacher seats shall not be occupied or utilized for purposes other than means of egress.

N302.1 [306.1] Motion Picture Projection Rooms

AMENDMENT
This section has been amended at the state or city level.
Electric arc, xenon or other light source projection equipment which develops hazardous gases, dust or radiation and the projection of ribbon- type cellulose nitrate film, regardless of the light source used in projection, shall be operated within a motion picture projection room complying with Section 409 of this code.
Motion picture and television production soundstages and approved production facilities shall be designed and constructed in accordance this code and NFPA 140.

Section N303 [312] Vehicle Impact Protection

AMENDMENT
This section has been amended at the state or city level.

N303.1 [312.1] General

AMENDMENT
This section has been amended at the state or city level.
Vehicle impact protection required by this code shall be provided by posts that comply with Section N303.2 or by other approved physical barriers that comply with Section N303.3.

Exceptions:
  1. Impact protection within a private garage.
  2. Impact protection for installations in compliance with the Plumbing Code or Mechanical Code when protection is provided in accordance with the applicable code.

N303.2 [312.2] Posts

AMENDMENT
This section has been amended at the state or city level.
Guard posts shall comply with all of the following requirements:
  1. Constructed of steel not less than 4 inches (102 mm) in diameter and concrete filled.
  2. Spaced not more than 4 feet (1219 mm) between posts on center.
  3. Set not less than 3 feet (914 mm) deep in a concrete footing of not less than a 15-inch (381 mm) diameter.
  4. Set with the top of the posts not less than 3 feet (914 mm) above ground.
  5. Located not less than 3 feet (914 mm) from the protected object.

N303.3 [312.3] Other Barriers

AMENDMENT
This section has been amended at the state or city level.
Physical barriers shall be a minimum of 36 inches (914 mm) in height and shall resist a force of 12,000 pounds (53 375 N) applied 36 inches (914 mm) above the adjacent ground surface.

Section N304 [317] Rooftop Gardens and Landscaped Roofs

AMENDMENT
This section has been amended at the state or city level.

N304.1 [317.1] General

AMENDMENT
This section has been amended at the state or city level.
Rooftop gardens and landscaped roofs shall be installed in accordance with Sections 1505, 1507.16, N304.2 and N304.3.

N304.2 [317.2] Rooftop Garden or Landscaped Roof Size

AMENDMENT
This section has been amended at the state or city level.
Rooftop garden or landscaped roof areas shall not exceed 15,625 square feet (1,450 m2) in size for any single area with a maximum dimension of 125 feet (39 m) in length or width. A minimum 6-foot-wide (1.8 m) clearance consisting of a Class A-rated roof system complying with ASTM E108 or UL 790 shall be provided between adjacent rooftop gardens or landscaped roof areas

N304.3 [317.3] Rooftop Structure and Equipment Clearance

AMENDMENT
This section has been amended at the state or city level.
For all vegetated roofing systems abutting combustible vertical surfaces, a Class A-rated roof system complying with ASTM E108 or UL 790 shall be achieved for a minimum 6-foot-wide (1.8 m) continuous border placed around rooftop structures and all rooftop equipment including, but not limited to, mechanical and machine rooms, penthouses, skylights, roof vents, solar panels, antenna supports, and building service equipment.

Section N305 [319] Collection and Storage of Combustible Recyclable Materials

AMENDMENT
This section has been amended at the state or city level.

N305.1 [319.1] Storage Protection

AMENDMENT
This section has been amended at the state or city level.
Inside storage shall be in areas of not less than 1-hour construction with openings protected as required for occupancy separations or provided with an approved automatic sprinkler system.

Chapter N5 Access to Openings

AMENDMENT
This section has been amended at the state or city level.

Section N501 [504] Access to Building Openings and Roofs

AMENDMENT
This section has been amended at the state or city level.

N501.1 [504.3] Stairway Access to Roof

AMENDMENT
This section has been amended at the state or city level.
New buildings four or more stories above grade plane, except those with a roof slope greater than four units vertical in 12 units horizontal (33.3- percent slope), shall be provided with a stairway to the roof. Stairway access to the roof shall be in accordance with Section 1009.16 of this code. Such stairway shall be marked at street and floor levels with a sign indicating that the stairway continues to the roof. Where roofs are used for roof gardens or for other purposes, stairways shall be provided as required for the occupant load.

Chapter N6 Building Services and Systems

AMENDMENT
This section has been amended at the state or city level.

Section N601 General

AMENDMENT
This section has been amended at the state or city level.

N601.1 Scope

AMENDMENT
This section has been amended at the state or city level.
The provisions of this code shall apply to the installation, of fuel-fired appliances and heating systems, electrical equipment room signage, mechanical refrigeration systems, and stationary storage battery systems.

Section N602 Definitions

AMENDMENT
This section has been amended at the state or city level.

N602.1 Definitions

AMENDMENT
This section has been amended at the state or city level.
The following terms are defined in Section N202:

BATTERY SYSTEM, STATIONARY LEAD-ACID.

BATTERY TYPES.

REFRIGERANT.

REFRIGERATION SYSTEM.

Section N603 Fuel-Fired Appliances

AMENDMENT
This section has been amended at the state or city level.

N603.1 Installation

AMENDMENT
This section has been amended at the state or city level.
The installation of fuel-fired appliances, other than internal combustion engines, oil lamps and portable devices such as blow torches, melting pots and weed burners, shall comply with this section and the Mechanical Code.

N603.1.1 Manufacturer's Instruction

AMENDMENT
This section has been amended at the state or city level.
The installation shall be made in accordance with the manufacturer's instructions and applicable federal, state and local rules and regulations. Where it becomes necessary to change, modify or alter a manufacturer's instructions in any way, written approval shall first be obtained from the manufacturer.

N603.1.2 Approval

AMENDMENT
This section has been amended at the state or city level.
The design, construction and installation of fuel-fired appliances shall be in accordance with the Mechanical Code.

N603.1.3 Electrical Wiring and Equipment

AMENDMENT
This section has been amended at the state or city level.
Electrical wiring and equipment used in connection with oil-burning equipment shall be installed in accordance with the Electrical Code.

N603.1.4 Reserved

AMENDMENT
This section has been amended at the state or city level.

N603.1.5 Access

AMENDMENT
This section has been amended at the state or city level.
The installation shall be readily accessible for cleaning hot surfaces; removing burners; replacing motors, controls, air filters, chimney connectors, draft regulators and other working parts; and for adjusting, cleaning and lubricating parts.

N603.1.6 Testing, Diagrams and Instructions

AMENDMENT
This section has been amended at the state or city level.
After installation of the oil-burning equipment, operation and combustion performance tests shall be conducted to determine that the burner is in proper operating condition and that all accessory equipment, controls, and safety devices function properly.

N603.1.7 Clearances

AMENDMENT
This section has been amended at the state or city level.
Working clearances between oil-fired appliances and electrical panelboards and equipment shall be in accordance with the Electrical Code. Clearances between oil-fired equipment and oil supply tanks shall be in accordance with NFPA 31.

N603.2 Chimneys

AMENDMENT
This section has been amended at the state or city level.
Masonry chimneys shall be constructed in accordance with this code. Factory-built chimneys shall be installed in accordance with the Mechanical Code.

N603.3 Fuel Oil Storage System

AMENDMENT
This section has been amended at the state or city level.
Fuel oil storage systems shall be installed in accordance with this these sections. Fuel-oil piping systems shall be installed in accordance with the Mechanical Code.

N603.3.1 Fuel Oil Storage in Outside, Above-Ground Tanks

AMENDMENT
This section has been amended at the state or city level.
Where connected to a fuel-oil piping system, the maximum amount of fuel oil storage allowed outside above ground without additional protection shall be 660 gallons (2498 L). The storage of fuel oil above ground in quantities exceeding 660 gallons (2498 L) shall comply with NFPA 31.

N603.3.2 Fuel Oil Storage Inside Buildings

AMENDMENT
This section has been amended at the state or city level.
Fuel oil storage inside buildings shall comply with Sections N603.3.2.1 through N603.3.2.5 or Sections N5701 through N5706.

N603.3.2.1 Quantity Limits

AMENDMENT
This section has been amended at the state or city level.
One or more fuel oil storage tanks containing Class II or III combustible liquid shall be permitted in a building. The aggregate capacity of all such tanks shall not exceed 660 gallons (2498 L).

Exception: The aggregate capacity limit shall be permitted to be increased to 3,000 gallons (11 356 L) of Class II or III liquid for storage in protected aboveground tanks complying with Section N5704.2.9.7, when all of the following conditions are met:
  1. The entire 3,000-gallon (11 356 L) quantity shall be stored in protected above-ground tanks;
  2. The 3,000-gallon (11 356 L) capacity shall be permitted to be stored in a single tank or multiple smaller tanks; and
  3. The tanks shall be located in a room protected by an automatic sprinkler system complying with Section 903.3.1.1 of this code.

N603.3.2.2 Restricted Use and Connection

AMENDMENT
This section has been amended at the state or city level.
Tanks installed in accordance with Section N603.3.2 shall be used only to supply fuel oil to fuel-burning or generator equipment installed in accordance with Section N603.3.2.4. Connections between tanks and equipment supplied by such tanks shall be made using closed piping systems.

N603.3.2.3 Applicability of Maximum Allowable Quantity and Control Area Requirements

AMENDMENT
This section has been amended at the state or city level.
The quantity of combustible liquid stored in tanks complying with Section N603.3.2 shall not be counted towards the maximum allowable quantity set forth in Table 307.1(1) of this code, and such tanks shall not be required to be located in a control area.

N603.3.2.4 Installation

AMENDMENT
This section has been amended at the state or city level.
Tanks and piping systems shall be installed and separated from other uses in accordance with Section 915 and Chapter 13, both of the Mechanical Code, as applicable.

Exception: Protected above-ground tanks complying with Section N5704.2.9 shall not be required to be separated from surrounding areas.

N603.3.2.5 Tanks in Basements

AMENDMENT
This section has been amended at the state or city level.
Tanks in basements shall be located not more than two stories below grade plane.

N603.4 Reserved

AMENDMENT
This section has been amended at the state or city level.

N603.5 Heating Appliances

AMENDMENT
This section has been amended at the state or city level.
Heating appliances shall be listed and shall comply with Sections N603.5.1 and N603.5.2.

N603.5.1 Guard Against Contact

AMENDMENT
This section has been amended at the state or city level.
The heating element or combustion chamber shall be permanently guarded so as to prevent accidental contact by persons or material.

N603.5.2 Heating Appliance Installation

AMENDMENT
This section has been amended at the state or city level.
Heating appliances shall be installed in accordance with the manufacturer's instructions, this code, the Mechanical Code, and the Electrical Code.

N603.6-N603.7 Reserved

AMENDMENT
This section has been amended at the state or city level.

N603.8 Incinerators

AMENDMENT
This section has been amended at the state or city level.
Commercial, industrial and residential Type incinerators and chimneys shall be constructed in accordance with this code and the Mechanical Code.

N603.8.1 Residential Incinerators

AMENDMENT
This section has been amended at the state or city level.
Residential incinerators shall be of an approved type

N603.8.2 Spark Arrestor

AMENDMENT
This section has been amended at the state or city level.
Incinerators shall be equipped with an effective means for arresting sparks.

N603.9 Gas Meters

AMENDMENT
This section has been amended at the state or city level.
Above-ground gas meters, regulators and piping subject to damage shall be protected by a barrier complying with Section N303 or otherwise protected in an approved manner.

Section N604 Emergency and Standby Power Systems

AMENDMENT
This section has been amended at the state or city level.

N604.1 Installation

AMENDMENT
This section has been amended at the state or city level.
Emergency and standby power systems required by this code shall be installed in accordance with this code, NFPA 110 and NFPA 111.

Exception: Fuel supply requirements of NFPA 110, Section 5.1.2 may be reduced, when approved by the building official, based on the operational needs and of the facility served by the emergency or standby power system.

N604.1.1 [604.2.14.2.1] Other Circuits

AMENDMENT
This section has been amended at the state or city level.
Circuits supplying lighting for the fire command center and mechanical equipment rooms shall be transferable to the standby source.

N604.1.2 [604.2.14.3] Emergency Systems

AMENDMENT
This section has been amended at the state or city level.
Exit signs, exit illumination as required by Chapter 10 of this code, electrically powered fire pumps required to maintain pressure, and elevator car lighting are classified as emergency systems and shall operate within 10 seconds of failure of the normal power supply and shall be capable of being transferred to the standby source.

Exception: Exit sign, exit and means of egress illumination are permitted to be powered by a standby source in buildings of Group F and S occupancies.

Section N605 Electrical Room Signage

AMENDMENT
This section has been amended at the state or city level.

N605.1 [605.3.1] Labeling

AMENDMENT
This section has been amended at the state or city level.
Doors into electrical control panel rooms shall be marked with a plainly visible and legible sign stating ELECTRICAL ROOM or similar approved wording.

Section N606 Mechanical Refrigeration

AMENDMENT
This section has been amended at the state or city level.

[M] N606.1 Scope

AMENDMENT
This section has been amended at the state or city level.
Refrigeration systems shall be installed in accordance with the Mechanical Code.

[M] N606.2 Refrigerants

AMENDMENT
This section has been amended at the state or city level.
The use and purity of new, recovered and reclaimed refrigerants shall be in accordance with the Mechanical Code.

[M] N606.3 Refrigerant Classification

AMENDMENT
This section has been amended at the state or city level.
Refrigerants shall be classified in accordance with the Mechanical Code.

[M] N606.4 Change in Refrigerant Type

AMENDMENT
This section has been amended at the state or city level.
A change in the type of refrigerant in a refrigeration system shall be in accordance with the Mechanical Code.

N606.5–N606.6 Reserved

AMENDMENT
This section has been amended at the state or city level.

N606.7 Emergency Signs

AMENDMENT
This section has been amended at the state or city level.
Refrigeration units or systems having a refrigerant circuit containing more than 220 pounds (100 kg) of Group A1 or 30 pounds (14 kg) of any other group refrigerant shall be provided with approved emergency signs, charts and labels in accordance with NFPA 704. Hazard signs shall be in accordance with the Mechanical Code for the classification of refrigerants listed therein.

[M] N606.8 Refrigerant Detector

AMENDMENT
This section has been amended at the state or city level.
Machinery rooms shall contain a refrigerant detector with an audible and visual alarm. The detector, or a sampling tube that draws air to the detector, shall be located in an area where refrigerant from a leak will concentrate. The alarm shall be actuated at a value not greater than the corresponding TLV-TWA values shown in the Mechanical Code for the refrigerant classification. Detectors and alarms shall be placed in approved locations. The detector shall transmit a signal to an approved location.

[M] N606.9 Remote Controls

AMENDMENT
This section has been amended at the state or city level.
Where flammable refrigerants are used and compliance with Section 1106 of the Mechanical Code is required, remote control of the mechanical equipment and appliances located in the machinery room as required by Sections N606.9.1 and N606.9.2 shall be provided at an approved location immediately outside the machinery room and adjacent to its principal entrance.

[M] N606.9.1 Refrigeration System Emergency Shutoff

AMENDMENT
This section has been amended at the state or city level.
A clearly identified switch of the break-glass type or with an approved tamper-resistant cover shall provide off-only control of refrigerant compressors, refrigerant pumps and normally closed automatic refrigerant valves located at an approved location immediately outside the machinery room and adjacent to its primary entrance. Additionally, this equipment shall be automatically shut off whenever the refrigerant vapor concentration in the machinery room exceeds the vapor detector's upper detection limit or 25 percent of the LEL, whichever is lower.

[M] N606.9.2 Ventilation System

AMENDMENT
This section has been amended at the state or city level.
A clearly identified switch of the break-glass type shall provide on-only control of the machinery room ventilation fans.

N606.10 Emergency Pressure Control System

AMENDMENT
This section has been amended at the state or city level.
Refrigeration systems containing more than 6.6 pounds (3 kg) of flammable, toxic or highly toxic refrigerant or ammonia shall be provided with an emergency pressure control system in accordance with Sections N606.10.1 and N606.10.2.

N606.10.1 Automatic Crossover Valves

AMENDMENT
This section has been amended at the state or city level.
Each high- and intermediate-pressure zone in a refrigeration system shall be provided with a single automatic valve providing a crossover connection to a lower pressure zone. Automatic crossover valves shall comply with Sections N606.10.1.1 through N606.10.1.3.

N606.10.1.1 Overpressure Limit Set Point

AMENDMENT
This section has been amended at the state or city level.
Automatic crossover valves shall be arranged to automatically relieve excess system pressure to a lower pressure zone if the pressure in a high- or intermediate-pressure zone rises to within 90 percent of the set point for emergency pressure relief devices.

N606.10.1.2 Manual Operation

AMENDMENT
This section has been amended at the state or city level.
When required by the building official, automatic crossover valves shall be capable of manual operation.

N606.10.1.3 System Design Pressure

AMENDMENT
This section has been amended at the state or city level.
Refrigeration system zones that are connected to a higher pressure zone by an automatic crossover valve shall be designed to safely contain the maximum pressure that can be achieved by interconnection of the two zones.

N606.10.2 Automatic Emergency Stop

AMENDMENT
This section has been amended at the state or city level.
An automatic emergency stop feature shall be provided in accordance with Sections N606.10.2.1 and N606.10.2.2.

N606.10.2.1 Operation of an Automatic Crossover Valve

AMENDMENT
This section has been amended at the state or city level.
Operation of an automatic crossover valve shall cause all compressors on the affected system to immediately stop. Dedicated pressure-sensing devices located immediately adjacent to crossover valves shall be permitted as a means for determining operation of a valve. To ensure that the automatic crossover valve system provides a redundant means of stopping compressors in an overpressure condition, high-pressure cutout sensors associated with compressors shall not be used as a basis for determining operation of a crossover valve.

N606.10.2.2 Overpressure in Low-Pressure Zone

AMENDMENT
This section has been amended at the state or city level.
The lowest pressure zone in a refrigeration system shall be provided with a dedicated means of determining a rise in system pressure to within 90 percent of the set point for emergency pressure relief devices. Activation of the overpressure sensing device shall cause all compressors on the affected system to immediately stop.

N606.11 Reserved

AMENDMENT
This section has been amended at the state or city level.

N606.12 Termination of Relief Devices

AMENDMENT
This section has been amended at the state or city level.
Pressure relief devices, fusible plugs and purge systems for refrigeration systems containing more than 6.6 pounds (3 kg) of flammable, toxic or highly toxic refrigerants shall be provided with an approved discharge system as required by Sections N606.12.1, N606.12.2 and N606.12.3. Discharge piping and devices connected to the discharge side of a fusible plug or rupture member shall have provisions to prevent plugging the pipe in the event of the fusible plug or rupture member functions.

N606.12.1 Flammable Refrigerants

AMENDMENT
This section has been amended at the state or city level.
Systems containing flammable refrigerants having a density equal to or greater than the density of air shall discharge vapor to the atmosphere only through an approved treatment system in accordance with Section N606.12.4 or a flaring system in accordance with Section N606.12.5. Systems containing flammable refrigerants having a density less than the density of air shall be permitted to discharge vapor to the atmosphere provided that the point of discharge is located outside of the structure at not less than 15 feet (4572 mm) above the adjoining grade level and not less than 20 feet (6096 mm) from any window, ventilation opening or exit.

N606.12.2 Toxic and Highly Toxic Refrigerants

AMENDMENT
This section has been amended at the state or city level.
Systems containing toxic or highly toxic refrigerants shall discharge vapor to the atmosphere only through an approved treatment system in accordance with Section N606.12.4 or a flaring system in accordance with Section N606.12.5.

N606.12.3 Ammonia Refrigerant

AMENDMENT
This section has been amended at the state or city level.
Systems containing ammonia refrigerant shall discharge vapor to the atmosphere through an approved treatment system in accordance with Section N606.12.4, a flaring system in accordance with Section N606.12.5, or through an approved ammonia diffusion system in accordance with Section N606.12.6, or by other approved means.

Exceptions:
  1. Ammonia/water absorption systems containing less than 22 pounds (10 kg) of ammonia and for which the ammonia circuit is located entirely outdoors.
  2. When the fire code building official determines, on review of an engineering analysis prepared in accordance with that a fire, health or environmental hazard would not result from discharging ammonia directly to the atmosphere.

N606.12.4 Treatment Systems

AMENDMENT
This section has been amended at the state or city level.
Treatment systems shall be designed to reduce the allowable discharge concentration of the refrigerant gas to not more than 50 percent of the IDLH at the point of exhaust. Treatment systems shall be in accordance with Sections N6003 and N6004.

N606.12.5 Flaring Systems

AMENDMENT
This section has been amended at the state or city level.
Flaring systems for incineration of flammable refrigerants shall be designed to incinerate the entire discharge. The products of refrigerant incineration shall not pose health or environmental hazards. Incineration shall be automatic upon initiation of discharge, shall be designed to prevent blowback and shall not expose structures or materials to threat of fire. Standby fuel, such as LP gas, and standby power shall have the capacity to operate for one and one-half the required time for complete incineration of refrigerant in the system.

N606.12.6 Ammonia Diffusion Systems

AMENDMENT
This section has been amended at the state or city level.
Ammonia diffusion systems shall include a tank containing 1 gallon of water for each pound of ammonia (4 L of water for each 1 kg of ammonia) that will be released in 1 hour from the largest relief device connected to the discharge pipe. The water shall be prevented from freezing. The discharge pipe from the pressure relief device shall distribute ammonia in the bottom of the tank, but no lower than 33 feet (10 058 mm) below the maximum liquid level. The tank shall contain the volume of water and ammonia without overflowing.

N606.13 Discharge Location for Refrigeration Machinery Room Ventilation

AMENDMENT
This section has been amended at the state or city level.
Exhaust from mechanical ventilation systems serving refrigeration machinery rooms containing flammable, toxic or highly toxic refrigerants, other than ammonia, capable of exceeding 25 percent of the LFL or 50 percent of the IDLH shall be equipped with approved treatment systems to reduce the discharge concentrations to those values or lower.

Section N607 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section N608 Stationary Storage Battery Systems

AMENDMENT
This section has been amended at the state or city level.

N608.1 Scope

AMENDMENT
This section has been amended at the state or city level.
Flooded lead-acid, nickel cadmium and valve regulated lead-acid (VRLA) stationary storage battery systems of greater than seven batteries or over 600 amp-hour capacity, or more than 1,000 pounds (454 kg) for lithium-ion and lithium metal polymer, used for facility standby power, emergency power or uninterruptible power supplies shall comply with this section and Table N608.1. Stationary storage battery systems shall not be located in a space with an open combustion source.

TABLE N608.1
BATTERY REQUIREMENTS


REQUIREMENT NONRECOMBINANT BATTERIES RECOMBINANT BATTERIES OTHER BATTERIES
Vented (Flooded) Lead
Acid Batteries
Vented (Flooded) Nickel-Cadmium (Ni-Cd)
Batteries
Valve Regulated Lead-Acid (VRLA) Cells Lithium-Ion Cells Lithium Metal Cells
Safety caps Venting caps (N608.2.1) Venting caps (N608.2.1) Self-resealing flamearresting caps (N608.2.2) No caps No caps
Thermal runaway
management
Not required Not required Required (N608.3) Not required Required (N608.3)
Spill control Required (N608.5) Required (N608.5) Not required Not required Not required
Neutralization Required Required Required Not required Not required
Ventilation Required
(N608.6.1; N608.6.2)
Required
(N608.6.1; N608.6.2)
Required
(N608.6.1; N608.6.2)
Not required Not required
Signage Required (N608.7) Required (N608.7) Required (N608.7) Required (N608.7) Required (N608.7)
Seismic protection Required (N608.8) Required (N608.8) Required (N608.8) Required (N608.8) Required (N608.8)
Smoke detection Required (N608.9) Required (N608.9) Required (N608.9) Required (N608.9) Required (N608.9)

N608.2 Safety Caps

AMENDMENT
This section has been amended at the state or city level.
Safety caps for stationary storage battery systems shall comply with Sections N608.2.1 and N608.2.2.

N608.2.1 Nonrecombinant Batteries

AMENDMENT
This section has been amended at the state or city level.
Vented lead-acid, nickel-cadmium or other types of nonrecombinant batteries shall be provided with safety venting caps.

N608.2.2 Recombinant Batteries

AMENDMENT
This section has been amended at the state or city level.
VRLA batteries shall be equipped with self-resealing flame-arresting safety vents.

N608.3 Thermal Runaway

AMENDMENT
This section has been amended at the state or city level.
VRLA and lithium metal polymer battery systems shall be provided with a listed device or other approved method to preclude, detect and control thermal runaway.

N608.4 Room Design and Construction

AMENDMENT
This section has been amended at the state or city level.
Enclosure of stationary battery systems shall comply with this code. Battery systems shall be allowed to be in the same room with the equipment they support.

N608.4.1 Separate Rooms

AMENDMENT
This section has been amended at the state or city level.
When stationary batteries are installed in a separate equipment room accessible only to authorized personnel, they shall be permitted to be installed on an open rack for ease of maintenance.

N608.4.2 Occupied Work Centers

AMENDMENT
This section has been amended at the state or city level.
When a system of VRLA, lithium-ion, or other type of sealed, nonventing batteries is situated in an occupied work center, it shall be allowed to be housed in a noncombustible cabinet or other enclosure to prevent access by unauthorized personnel.

N608.4.3 Cabinets

AMENDMENT
This section has been amended at the state or city level.
When stationary batteries are contained in cabinets in occupied work centers, the cabinet enclosures shall be located within 10 feet (3048 mm) of the equipment that they support.

N608.5 Spill Control

AMENDMENT
This section has been amended at the state or city level.
An approved method and materials for the control of a spill of electrolyte shall be provided in areas containing lead-acid, nickel-cadmium or other types of batteries with free-flowing liquid electrolyte. For purposes of this paragraph, a "spill" is defined as any unintentional release of electrolyte.

Exception: VRLA, lithium-ion, lithium metal polymer or other types of sealed batteries with immobilized electrolyte shall not require spill control.

N608.6 Ventilation

AMENDMENT
This section has been amended at the state or city level.
Ventilation of stationary storage battery systems shall comply with Sections N608.6.1 and N608.6.2.

N608.6.1 Room Ventilation

AMENDMENT
This section has been amended at the state or city level.
Ventilation shall be provided in accordance with the Mechanical Code and the following:
  1. For flooded lead-acid, flooded Ni-Cd and VRLA batteries, the ventilation system shall be designed to limit the maximum concentration of hydrogen to 1.0 percent of the total volume of the room; or
  2. Continuous ventilation shall be provided at a rate of not less than 1 cubic foot per minute per square foot (1 ft3/min/ft2) [0.0051 m3/s m2] of floor area of the room.
Exception: Lithium-ion and lithium metal polymer batteries shall not require additional ventilation beyond that which would normally be required for human occupancy of the space in accordance with the Mechanical Code.

[M] N608.6.2 Cabinet Ventilation

AMENDMENT
This section has been amended at the state or city level.
When VRLA batteries are installed inside a cabinet, the cabinet shall be approved for use in occupied spaces and shall be mechanically or naturally vented by one of the following methods:
  1. The cabinet ventilation shall limit the maximum concentration of hydrogen to 1 percent of the total volume of the cabinet during the worst-case event of simultaneous "boost" charging of all the batteries in the cabinet; or
  2. When calculations are not available to substantiate the ventilation rate, continuous ventilation shall be provided at a rate of not less than 1 cubic foot per minute per square foot [1 ft3/min/ft2or 0.0051 m3 /(s • m2)] of floor area covered by the cabinet. The room in which the cabinet is installed shall also be ventilated as required in Section N608.6.1.

[M] N608.6.3 Supervision

AMENDMENT
This section has been amended at the state or city level.
Mechanical ventilation systems where required by Sections N608.6.1 and N608.6.2 shall be supervised by an approved central, proprietary or remote station service or shall initiate an audible and visual signal at a constantly attended on-site location.

N608.7 Signage

AMENDMENT
This section has been amended at the state or city level.
Signs shall comply with Sections N608.7.1 and N608.7.2.

N608.7.1 Equipment Room and Building Signage

AMENDMENT
This section has been amended at the state or city level.
Doors into electrical equipment rooms or buildings containing stationary battery systems shall be provided with approved signs. The signs shall state that:
  1. The room contains energized battery systems.
  2. The room contains energized electrical circuits.
  3. The battery electrolyte solutions, where present, are corrosive liquids.

N608.7.2 Cabinet Signage

AMENDMENT
This section has been amended at the state or city level.
Cabinets shall have exterior labels that identify the manufacturer and model number of the system and electrical rating (voltage and current) of the contained battery system. There shall be signs within the cabinet that indicate the relevant electrical, chemical and fire hazards.

N608.8 Seismic Protection

AMENDMENT
This section has been amended at the state or city level.
The battery systems shall be seismically braced in accordance with this code.

N608.9 Smoke Detection

AMENDMENT
This section has been amended at the state or city level.
An approved automatic smoke detection system shall be installed in accordance with Section 907.2 of this code in rooms containing stationary battery systems.

Section N609 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section N610 Commercial Kitchen Cooking Oil Storage

AMENDMENT
This section has been amended at the state or city level.

N610.1 General

AMENDMENT
This section has been amended at the state or city level.
Storage of cooking oil (grease) in commercial cooking operations shall comply with Sections N5701 through N5706. Systems used to store cooking oils in larger than 60- gallon (227 L) above-ground tanks shall also comply with Sections N610.2 through N610.4. For purposes of this section, cooking oil shall be classified as a Class IIIB liquid unless otherwise determined by testing.

N610.2 Storage Tanks

AMENDMENT
This section has been amended at the state or city level.
Cooking oil storage tanks shall be installed in accordance with Section N5704 and the tank manufacturer's instructions.

N610.3 [610.4] Tank Venting

AMENDMENT
This section has been amended at the state or city level.
Normal and emergency venting for cooking oil storage tanks shall terminate outside the building as specified in Section Sections N5704.2.7.3 and 5704.2.7.4.

N610.4 [610.5] Electrical Equipment

AMENDMENT
This section has been amended at the state or city level.
Electrical equipment used for the operation and heating of the cooking oil storage system shall be listed and comply with the Electrical Code.

Chapter N8 Interior Finishes and Decorative Materials

AMENDMENT
This section has been amended at the state or city level.

Section N801 [807] Decorative Materials Other Than Decorative Vegetation in New Construction

AMENDMENT
This section has been amended at the state or city level.

N801.1 [807.4.2.2] Motion Picture Screens

AMENDMENT
This section has been amended at the state or city level.
The screens upon which motion pictures are projected in new buildings of Group A shall either meet the flame propagation performance criteria of NFPA 701 or shall comply with the requirements for a Class B interior finish in accordance with Section 803 of this code.

N802.1 [808.4] Combustible Lockers

AMENDMENT
This section has been amended at the state or city level.
Where lockers constructed of combustible materials are used, the lockers shall be considered interior finish and shall comply with Section 803 of this code.

Exception: Lockers constructed entirely of wood and noncombustible materials shall be permitted to be used wherever interior finish materials are required to meet a Class C classification in accordance with Section 803.1.1 of this code.

Chapter N9 Explosion Control

AMENDMENT
This section has been amended at the state or city level.

Section N901 [911] Explosion Control

AMENDMENT
This section has been amended at the state or city level.

N901.1 [911.1] General

AMENDMENT
This section has been amended at the state or city level.
Explosion control shall be provided in the following locations:
  1. Where a structure, room or space is occupied for purposes involving explosion hazards as identified in Table 414.5.1 of this code.
  2. Where quantities of hazardous materials specified in Table 414.5.1 of this code exceed the maximum allowable quantities in Table 307.1(1) of this code.
Such areas shall be provided with explosion (deflagration) venting, explosion (deflagration) prevention systems, or barricades in accordance with this section and NFPA 69, or NFPA 495 as applicable. Deflagration venting shall not be utilized as a means to protect buildings from detonation hazards.

N901.2 [911.2] Required Deflagration Venting

AMENDMENT
This section has been amended at the state or city level.
Areas that are required to be provided with deflagration venting shall comply with the following:
  1. Walls, ceilings and roofs exposing surrounding areas shall be designed to resist a minimum internal pressure of 100 pounds per square foot (psf) (4788 Pa). The minimum internal design pressure shall not be less than five times the maximum internal relief pressure specified in Section N901.2, Item 5.
  2. Deflagration venting shall be provided only in exterior walls and roofs.
    Exception: Where sufficient exterior wall and roof venting cannot be provided because of inadequate exterior wall or roof area, deflagration venting shall be allowed by specially designed shafts vented to the exterior of the building.
  3. Deflagration venting shall be designed to prevent unacceptable structural damage. Where relieving a deflagration, vent closures shall not produce projectiles of sufficient velocity and mass to cause life threatening injuries to the occupants or other persons on the property or adjacent public ways.
  4. The aggregate clear area of vents and venting devices shall be governed by the pressure resistance of the construction assemblies specified in Item 1 of this section and the maximum internal pressure allowed by Item 5 of this section.
  5. Vents shall be designed to withstand loads in accordance with this code. Vents shall consist of any one or any combination of the following to relieve at a maximum internal pressure of 20 pounds per square foot (958 Pa), but not less than the loads required elsewhere in this code:

    1. Exterior walls designed to release outward.
    2. Hatch covers.
    3. Outward swinging doors.
    4. Roofs designed to uplift.
    5. Venting devices listed for the purpose.
  6. Vents designed to release from the exterior walls or roofs of the building when venting a deflagration shall discharge directly to the exterior of the building where an unoccupied space not less than 50 feet (15 240 mm) in width is provided between the exterior walls of the building and the lot line.
    Exception: Vents complying with Item 7 of this section.
  7. Vents designed to remain attached to the building when venting a deflagration shall be so located that the discharge opening shall not be less than 10 feet (3048 mm) vertically from window openings and exits in the building and 20 feet (6096 mm) horizontally from exits in the building, from window openings and exits in adjacent buildings on the same lot, and from the lot line.
  8. Discharge from vents shall not be into the interior of the building.

N901.3 [911.3] Explosion Prevention Systems

AMENDMENT
This section has been amended at the state or city level.
Explosion prevention systems shall be of an approved type and installed in accordance with the provisions of this code and NFPA 69.

N901.4 [911.4] Barricades

AMENDMENT
This section has been amended at the state or city level.
Barricades shall be designed and installed in accordance with NFPA 495.

Chapter N20 Aviation Facilities

AMENDMENT
This section has been amended at the state or city level.

Section N2001 [2007] Helistops and Heliports

AMENDMENT
This section has been amended at the state or city level.

N2001.1 [2007.5] Standpipe Systems

AMENDMENT
This section has been amended at the state or city level.
A building with a rooftop helistop or heliport shall be provided with a Class I or III standpipe system extended to the roof level on which the helistop or heliport is located. All portions of the helistop and heliport area shall be within 150 feet (45 720 mm) of a 2 1/2 -inch (63.5 mm) outlet on the standpipe system.

NOTE: Provisions which determine when standpipes are required are reprinted from the Oregon Fire Code. Installation and construction standards for standpipe systems are adopted by the Oregon Building Codes Division.

N2001.2 [2007.6] Foam Protection

AMENDMENT
This section has been amended at the state or city level.
Foam fire-protection capabilities shall be provided for rooftop heliports. Such systems shall be designed, installed in accordance with the applicable provisions of Sections 903, 904 and 905 of this code.

Chapter N21 Dry Cleaning

AMENDMENT
This section has been amended at the state or city level.

Section N2101 General

AMENDMENT
This section has been amended at the state or city level.

N2101.1 Scope

AMENDMENT
This section has been amended at the state or city level.
Dry cleaning plants shall comply with the requirements of Sections N2101 through N2108.

Section N2102 Definitions

AMENDMENT
This section has been amended at the state or city level.

N2102.1 Definitions

AMENDMENT
This section has been amended at the state or city level.
The following terms are defined in Section N202:

DRY CLEANING.
DRY CLEANING PLANT.
DRY CLEANING ROOM.
DRY CLEANING SYSTEM.
SOLVENT OR LIQUID CLASSIFICATIONS.

Class I solvents.
Class II solvents.
Class IIIA solvents.
Class IIIB solvents.
Class IV solvents.

Section N2103 Classifications

AMENDMENT
This section has been amended at the state or city level.

N2103.1 Solvent Classification

AMENDMENT
This section has been amended at the state or city level.
Dry cleaning solvents shall be classified according to their flash points as follows:
  1. Class I solvents are liquids having a flash point below 100°F (38°C).
  2. Class II solvents are liquids having a flash point at or above 100°F (38°C) and below 140°F (60°C).
  3. Class IIIA solvents are liquids having a flash point at or above 140°F (60°C) and below 200°F (93°C).
  4. Class IIIB solvents are liquids having a flash point at or above 200°F (93°C).
  5. Class IV solvents are liquids classified as nonflammable.

N2103.2 Classification of Dry Cleaning Plants and Systems

AMENDMENT
This section has been amended at the state or city level.
Dry cleaning plants and systems shall be classified based on the solvents used as follows:
  1. Type I—systems using Class I solvents.
  2. Type II—systems using Class II solvents.
  3. Type III-A—systems using Class IIIA solvents.
  4. Type III-B—systems using Class IIIB solvents.
  5. Type IV—systems using Class IV solvents in which dry cleaning is not conducted by the public.
  6. Type V—systems using Class IV solvents in which dry cleaning is conducted by the public.
Spotting and pretreating operations shall not change the type of the dry cleaning plant.

N2103.2.1 Multiple Solvents

AMENDMENT
This section has been amended at the state or city level.
Dry cleaning plants using more than one class of solvent for dry cleaning shall be classified based on the numerically lowest solvent class.

N2103.3 Design

AMENDMENT
This section has been amended at the state or city level.
The occupancy classification, design and construction of dry cleaning plants shall comply with the applicable requirements of this code.

Section N2104 General Requirements

AMENDMENT
This section has been amended at the state or city level.

N2104.1 Prohibited Use

AMENDMENT
This section has been amended at the state or city level.
Type I dry cleaning plants shall be prohibited. Limited quantities of Class I solvents stored and used in accordance with this section shall not be prohibited in dry cleaning plants.

N2104.1.1 [2104.2.1] Ventilation

AMENDMENT
This section has been amended at the state or city level.
Ventilation shall be provided in accordance with Section 502 of the Mechanical Code and DOL 29 CFR Part 1910.1000, where applicable.

N2104.1.2 [2104.2.2] Heating

AMENDMENT
This section has been amended at the state or city level.
In Type II dry cleaning plants, heating shall be by indirect means using steam, hot water or hot oil only.

Section N2105 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section N2106 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section N2107 Dry Cleaning Systems

AMENDMENT
This section has been amended at the state or city level.

N2107.1 General Equipment Requirements

AMENDMENT
This section has been amended at the state or city level.
Dry cleaning systems, including dry cleaning units, washing machines, stills, drying cabinets, tumblers and their appurtenances, including pumps, piping, valves, filters and solvent coolers, shall be installed in accordance with NFPA 32. The construction of buildings in which such systems are located shall comply with the requirements of this section and the applicable provisions elsewhere in this code.

N2107.2 Type II Systems

AMENDMENT
This section has been amended at the state or city level.
Type II dry cleaning and solvent tank storage rooms shall not be located below grade or above the lowest floor level of the building and shall comply with Sections N2107.2.2 and N2107.2.3.

N2107.2.1 Reserved

AMENDMENT
This section has been amended at the state or city level.

N2107.2.2 Number of Means of Egress

AMENDMENT
This section has been amended at the state or city level.
Type II dry cleaning rooms shall have not less than two means of egress doors located at opposite ends of the room, at least one of which shall lead directly to the outside.

N2107.2.3 Spill Control and Secondary Containment

AMENDMENT
This section has been amended at the state or city level.
Curbs, drains or other provisions for spill control and secondary containment shall be provided in accordance with Section N5004.2 to collect solvent leakage and fire protection water and direct it to a safe location.

Section N2108 Fire Protection

AMENDMENT
This section has been amended at the state or city level.

N2108.1 General

AMENDMENT
This section has been amended at the state or city level.
Where required by this section, fire protection systems, devices and equipment shall be installed, inspected and tested in accordance with Chapter 9 of this code.

N2108.2 Automatic Sprinkler System

AMENDMENT
This section has been amended at the state or city level.
An automatic sprinkler system shall be installed in accordance with Section 903.3.1.1 of this code throughout dry cleaning plants containing Type II, Type III-A or Type III-B dry cleaning systems.

Exceptions:
  1. An automatic sprinkler system shall not be required in Type III-A dry cleaning plants where the aggregate quantity of Class III-A solvent in dry cleaning machines and storage does not exceed 330 gallons (1250 L) and dry cleaning machines are equipped with a feature that will accomplish any one of the following:
    1. Prevent oxygen concentrations from reaching 8 percent or more by volume.
    2. Keep the temperature of the solvent at least 30°F (16.7°C) below the flash point.
    3. Maintain the solvent vapor concentration at a level lower than 25 percent of the lower explosive limit (LEL).
    4. Utilize equipment approved for use in Class I, Division 2 hazardous locations in accordance with the Electrical Code.
    5. Utilize an integrated dry-chemical, clean agent or water-mist automatic fire-extinguishing system designed in accordance with Chapter 9 of this code.
  2. An automatic sprinkler system shall not be required in Type III-B dry cleaning plants where the aggregate quantity of Class III-B solvent in dry cleaning machines and storage does not exceed 3,300 gallons (12 490 L).

N2108.3 Automatic Fire-Extinguishing Systems

AMENDMENT
This section has been amended at the state or city level.
Type II dry cleaning units, washer-extractors, and drying tumblers in Type II dry cleaning plants shall be provided with an approved automatic fire-extinguishing system installed in accordance with Chapter 9 of this code.

Exception: Where approved, a manual steam jet not less than 3/4 inch (19 mm) with a continuously available steam supply at a pressure not less than 15 pounds per square inch gauge (psig) (103 kPa) is allowed to be substituted for the automatic fire-extinguishing system.

Chapter N22 Combustible Dust-Producing Operations

AMENDMENT
This section has been amended at the state or city level.

Section N2201 General

AMENDMENT
This section has been amended at the state or city level.

N2201.1 Scope

AMENDMENT
This section has been amended at the state or city level.
The equipment, processes and operations involving dust explosion hazards shall comply with the provisions of Sections N2201 through N2205.

Section N2202 Definition

AMENDMENT
This section has been amended at the state or city level.

N2202.1 Definition

AMENDMENT
This section has been amended at the state or city level.
The following term is defined in Section 202:

COMBUSTIBLE DUST.

Section N2203 Reserved

AMENDMENT
This section has been amended at the state or city level.

Section N2204 Explosion Protection

AMENDMENT
This section has been amended at the state or city level.

N2204.1 Standards

AMENDMENT
This section has been amended at the state or city level.
The building official is authorized to enforce applicable construction provisions of the codes and standards listed in Table N2204.1 to prevent and control dust explosions.

TABLE N2204.1
EXPLOSION PROTECTION STANDARDS


STANDARD SUBJECT
NFPA 61 Agricultural and Food Products
NFPA 69 Explosion Prevention
NFPA 70 National Electrical Code
NFPA 85 Boiler and Combustion System Hazards
NFPA 120 Coal Preparation Plants
NFPA 484 Combustible Metal
NFPA 654 Manufacturing, Processing and Handling of
Combustible Particulate Solids
NFPA 655 Prevention of Sulfur Fires and Explosions
NFPA 664 Prevention of Fires and Explosions in Wood
Processing and Woodworking Facilities

Section N2205 Dust Collection

AMENDMENT
This section has been amended at the state or city level.

N2205.1 Dust Collection

AMENDMENT
This section has been amended at the state or city level.
Dust collection systems shall be designed and installed in accordance with Sections 510 and 511 of the Mechanical Code. Electrical ventilation fan motors shall be interlocked in accordance with Section 503.1 of the Mechanical Code.

NOTE: The Oregon Mechanical Specialty Code, Section 511.1.1, Exception 2, limits the number of independent collectors (portable collectors) to not more than three collectors, servicing not more than five dust-producing appliances.

Chapter N24 Flammable Finishes

AMENDMENT
This section has been amended at the state or city level.

Section N2401 General

AMENDMENT
This section has been amended at the state or city level.

N2401.1 Scope

AMENDMENT
This section has been amended at the state or city level.
Sections N2401 through N2409 shall apply to locations or areas where any of the following activities are conducted:
  1. The application of flammable finishes to articles or materials by means of spray apparatus.
  2. The application of flammable finishes by dipping or immersing articles or materials into the contents of tanks, vats or containers of flammable or combustible liquids for coating, finishing, treatment or similar processes.
  3. The application of flammable finishes by applying combustible powders to articles or materials utilizing powder spray guns, electrostatic powder spray guns, fluidized beds or electrostatic fluidized beds.
  4. The application of flammable finishes consisting of dualcomponent coatings or Class I or II liquids when applied by brush or roller in quantities exceeding 1 gallon (4 L).

N2401.2 Nonapplicability

AMENDMENT
This section has been amended at the state or city level.
This code shall not apply to spray finishing utilizing flammable or combustible liquids which do not sustain combustion, including:
  1. Liquids that have no fire point when tested in accordance with ASTM D92.
  2. Liquids with a flashpoint greater than 95°F (35°C) in a water-miscible solution or dispersion with a water and inert (noncombustible) solids content of more than 80 percent by weight.

Section N2402 Definitions

AMENDMENT
This section has been amended at the state or city level.

2402.1 Definitions

AMENDMENT
This section has been amended at the state or city level.
The following terms are defined in Section N202:

DETEARING.
DIP TANK.
ELECTROSTATIC FLUIDIZED BED.
FLAMMABLE FINISHES.
FLAMMABLE VAPOR AREA.
FLUIDIZED BED.
LIMITED SPRAYING SPACE.
RESIN APPLICATION AREA.
ROLL COATING.
SPRAY BOOTH.
SPRAY ROOM.
SPRAYING SPACE.

Section N2403 Protection of Operations

AMENDMENT
This section has been amended at the state or city level.

N2403.1 General

AMENDMENT
This section has been amended at the state or city level.
Operations covered by Sections N2401 through N2409 shall be protected as required by N2403.2 through N2403.2.2.

N2403.2 Sources of Ignition

AMENDMENT
This section has been amended at the state or city level.
Protection against sources of ignition shall be provided in accordance with Sections N2403.2.1 and N2403.2.2.

N2403.2.1 [2403.2.1.1] Flammable Vapor Areas

AMENDMENT
This section has been amended at the state or city level.
Such areas shall be considered to be Class I, Division 1 or Class II, Division 1 hazardous locations in accordance with the Electrical Code.

N2403.2.2 Open Flames and Sparks

AMENDMENT
This section has been amended at the state or city level.
Open flames and sparkproducing devices shall not be located in flammable vapor areas and shall not be located within 20 feet (6096 mm) of such areas unless separated by a permanent partition.

Exception: Drying and baking apparatus complying with Section N2404.6.1.2.

Section N2404 Spray Finishing

AMENDMENT
This section has been amended at the state or city level.

N2404.1 General

AMENDMENT
This section has been amended at the state or city level.
The application of flammable or combustible liquids by means of spray apparatus in continuous or intermittent processes shall be in accordance with the requirements of Sections N2403 and N2404.2 through N2404.9.4.

N2404.2 Location of Spray-Finishing Operations

AMENDMENT
This section has been amended at the state or city level.
Spray finishing operations conducted in buildings used for Group A, E, I or R occupancies shall be located in a spray room protected with an approved automatic sprinkler system installed in accordance with Section 903.3.1.1 of this code and separated vertically and horizontally from other areas in accordance with this code. In other occupancies, spray-finishing operations shall be conducted in a spray room, spray booth or spraying space approved for such use.

Exceptions:
  1. Automobile undercoating spray operations and sprayon automotive lining operations conducted in areas with approved natural or mechanical ventilation shall be exempt from the provisions of Section N2404 when approved and where utilizing Class IIIA or IIIB combustible liquids.
  2. In buildings other than Group A, E, I or R occupancies, approved limited spraying space in accordance with Section N2404.9.
  3. Resin application areas used for manufacturing of reinforced plastics complying with Section N2409 shall not be required to be located in a spray room, spray booth or spraying space.

N2404.3 Design and Construction

AMENDMENT
This section has been amended at the state or city level.
Design and construction of spray rooms, spray booths and spray spaces shall be in accordance with Sections N2404.3 through N2404.3.3.1.

N2404.3.1 Spray Rooms

AMENDMENT
This section has been amended at the state or city level.
Spray rooms shall be constructed and designed in accordance with this section and other applicable requirements of this code, and shall comply with Sections N2404.4 through N2404.8.

N2404.3.1.1 Floor

AMENDMENT
This section has been amended at the state or city level.
Combustible floor construction in spray rooms shall be covered by approved, noncombustible, nonsparking material, except where combustible coverings, including but not limited to thin paper or plastic and strippable coatings, are utilized over noncombustible materials to facilitate cleaning operations in spray rooms

N2404.3.2 Spray Booths

AMENDMENT
This section has been amended at the state or city level.
The design and construction of spray booths shall be in accordance with Sections N2404.3.2.1 through N2404.3.2.6, Sections N2404.4 through N2404.8 and NFPA 33.

N2404.3.2.1 Construction

AMENDMENT
This section has been amended at the state or city level.
Spray booths shall be constructed of approved noncombustible materials. Aluminum shall not be used. Where walls or ceiling assemblies are constructed of sheet metal, single-skin assemblies shall be no thinner than 0.0478 inch (18 gage) (1.2 mm) and each sheet of double-skin assemblies shall be no thinner than 0.0359 inch (20 gage) (0.9 mm). Structural sections of spray booths are allowed to be sealed with latex-based or similar caulks and sealants.

N2404.3.2.2 Surfaces

AMENDMENT
This section has been amended at the state or city level.
The interior surfaces of spray booths shall be smooth; shall be constructed so as to permit the free passage of exhaust air from all parts of the interior and to facilitate washing and cleaning; and shall be designed to confine residues within the booth. Aluminum shall not be used.

N2404.3.2.3 Floor

AMENDMENT
This section has been amended at the state or city level.
Combustible floor construction in spray booths shall be covered by approved, noncombustible, nonsparking material, except where combustible coverings, including but not limited to thin paper or plastic and strippable coatings, are utilized over noncombustible materials to facilitate cleaning operations in spray booths.

N2404.3.2.4 Means of Egress

AMENDMENT
This section has been amended at the state or city level.
Means of egress shall be provided in accordance with Chapter 10 of this code.

Exception: Means of egress doors from premanufactured spray booths shall not be less than 30 inches (762 mm) in width by 80 inches (2032 mm) in height.

N2404.3.2.5 Clear Space

AMENDMENT
This section has been amended at the state or city level.
Spray booths shall be installed so that all parts of the booth are readily accessible for cleaning. A clear space of not less than 3 feet (914 mm) shall be provided on all sides of the spray booth.

Exceptions:
  1. This requirement shall not prohibit locating a spray booth closer than 3 feet (914 mm) to or directly against an interior partition, wall or floor/ceiling assembly that has a fire-resistance rating of not less than 1 hour, provided the spray booth can be adequately maintained and cleaned.
  2. This requirement shall not prohibit locating a spray booth closer than 3 feet (914 mm) to an exterior wall or a roof assembly, provided the wall or roof is constructed of noncombustible material and the spray booth can be adequately maintained and cleaned.

N2404.3.2.6 Size

AMENDMENT
This section has been amended at the state or city level.
The aggregate area of spray booths in a building shall not exceed the lesser of 10 percent of the area of any floor of a building or the basic area allowed for a Group H-2 occupancy without area increases, as set forth in this code. The area of an individual spray booth in a building shall not exceed the lesser of the aggregate size limit or 1,500 square feet (139 m2).

Exception: One individual booth not exceeding 500 square feet (46 m2).

N2404.3.3 Spraying Spaces

AMENDMENT
This section has been amended at the state or city level.
Spraying spaces shall be designed and constructed in accordance with this code, Section N2404.3.3.1 and Sections N2404.4 through N2404.8.

N2404.3.3.1 Floor

AMENDMENT
This section has been amended at the state or city level.
Combustible floor construction in spraying spaces shall be covered by approved, noncombustible, nonsparking material, except where combustible coverings, such as thin paper or plastic and strippable coatings, are utilized over noncombustible materials to facilitate cleaning operations in spraying spaces.

N2404.4 Fire Protection

AMENDMENT
This section has been amended at the state or city level.
Spray booths and spray rooms shall be protected by an approved automatic fire-extinguishing system complying with Chapter 9 of this code. Protection shall also extend to exhaust plenums, exhaust ducts and both sides of dry filters when such filters are used.

N2404.5 Reserved

AMENDMENT
This section has been amended at the state or city level.

N2404.6 Sources of Ignition

AMENDMENT
This section has been amended at the state or city level.
Control of sources of ignition shall be in accordance with Section N2403.2 and Sections N2404.6.1 and N2404.6.1.2.

N2404.6.1 Drying Operations

AMENDMENT
This section has been amended at the state or city level.
Spray booths and spray rooms shall not be alternately used for the purpose of drying by arrangements or methods that could cause an increase in the surface temperature of the spray booth or spray room except in accordance with Section N2404.6.1.2. Except as specifically provided in this section, drying or baking units utilizing a heating system having open flames or that are capable of producing sparks shall not be installed in a flammable vapor areas.

N2404.6.1.1 Reserved

AMENDMENT
This section has been amended at the state or city level.

N2404.6.1.2 Drying Apparatus

AMENDMENT
This section has been amended at the state or city level.
Fixed drying apparatus shall comply with this code and the applicable provisions Sections N3001 through N3006. When recirculation ventilation is provided in accordance with Section 502.7 of the Mechanical Code, the heating system shall not be within the recirculation air path.

N2404.6.1.2.1 Interlocks

AMENDMENT
This section has been amended at the state or city level.
The spraying apparatus, drying apparatus and ventilating system for the spray booth or spray room shall be equipped with interlocks arranged to:
  1. Prevent operation of the spraying apparatus while drying operations are in progress.
  2. Purge spray vapors from the spray booth or spray room for a period of not less than 3 minutes before the drying apparatus is rendered operable.
  3. Have the ventilating system maintain a safe atmosphere within the spray booth or spray room during the drying process and automatically shut off drying apparatus in the event of a failure of the ventilating system.
  4. Shut off the drying apparatus automatically if the air temperature within the booth exceeds 200°F (93°C).

[M] N2404.7 Ventilation

AMENDMENT
This section has been amended at the state or city level.
Mechanical ventilation of flammable vapor areas shall be provided in accordance with Section 502.7 of the Mechanical Code.

N2404.7.1-N2404.7.5 Reserved

AMENDMENT
This section has been amended at the state or city level.

[M] N2404.7.6 Termination Point

AMENDMENT
This section has been amended at the state or city level.
The termination point for exhaust ducts discharging to the atmosphere shall not be less than the following distances:
  1. Ducts conveying explosive or flammable vapors, fumes or dusts: 30 feet (9144 mm) from the lot line; 10 feet (3048 mm) from openings into the building; 6 feet (1829 mm) from exterior walls and roofs; 30 feet (9144 mm) from combustible walls or openings into the building that are in the direction of the exhaust discharge; 10 feet (3048 mm) above adjoining grade.
  2. Other product-conveying outlets: 10 feet (3048 mm) from the lot line; 3 feet (914 mm) from exterior walls and roofs; 10 feet (3048 mm) from openings into the building; 10 feet (3048 mm) above adjoining grade.

N2404.7.7 Reserved

AMENDMENT
This section has been amended at the state or city level.

N2404.7.8 Filters

AMENDMENT
This section has been amended at the state or city level.
Air intake filters that are part of a wall or ceiling assembly shall be listed as Class I or II in accordance with UL 900. Exhaust filters shall be required.

N2404.7.8.1 Supports

AMENDMENT
This section has been amended at the state or city level.
Supports and holders for filters shall be constructed of noncombustible materials.

N2404.7.8.2 Attachment

AMENDMENT
This section has been amended at the state or city level.
Overspray collection filters shall be readily removable and accessible for cleaning or replacement.

N2404.7.8.3 Maintaining Air Velocity

AMENDMENT
This section has been amended at the state or city level.
Visible gauges, audible alarms or pressure-activated devices shall be installed to indicate or ensure that the required air velocity is maintained.

N2404.7.8.4 Filter Rolls

AMENDMENT
This section has been amended at the state or city level.
Spray booths equipped with a filter roll that is automatically advanced when the air velocity is reduced to less than 100 feet per minute (0.51 m/s) shall be arranged to shut down the spraying operation if the filter roll fails to advance automatically.

N2404.7.8.5 [2404.7.8.7] Waterwash Spray Booths

AMENDMENT
This section has been amended at the state or city level.
Waterwash spray booths shall be of an approved design so as to prevent excessive accumulation of deposits in ducts and residue at duct outlets. Such booths shall be arranged so that air and overspray are drawn through a continuously flowing water curtain before entering an exhaust duct to the building exterior.

N2404.8 Interlocks

AMENDMENT
This section has been amended at the state or city level.
Interlocks for spray application finishes shall be in accordance with Sections N2404.8.1 through N2404.8.2.

N2404.8.1 Automated Spray Application Operations

AMENDMENT
This section has been amended at the state or city level.
Where protecting automated spray application operations, automatic fire-extinguishing systems shall be equipped with an approved interlock feature that will, upon discharge of the system, automatically stop the spraying operations and workpiece conveyors into and out of the flammable vapor areas. Where the building is equipped with a fire alarm system, discharge of the automatic fire extinguishing system shall also activate the building alarm notification appliances.

N2404.8.1.1 Alarm Station

AMENDMENT
This section has been amended at the state or city level.
A manual fire alarm and emergency system shutdown station shall be installed to serve each flammable vapor area. When activated, the station shall accomplish the functions indicated in Section N2404.8.1.

N2404.8.1.2 Alarm Station Location

AMENDMENT
This section has been amended at the state or city level.
At least one manual fire alarm and emergency system shutdown station shall be readily accessible to operating personnel. Where access to this station is likely to involve exposure to danger, an additional station shall be located adjacent to an exit from the area.

N2404.8.2 Ventilation Interlock Prohibited

AMENDMENT
This section has been amended at the state or city level.
Air makeup and flammable vapor area exhaust systems shall not be interlocked with the fire alarm system and shall remain in operation during a fire alarm condition.

Exception: Where the type of fire-extinguishing system used requires such ventilation to be discontinued, air makeup and exhaust systems shall shut down and dampers shall close.

N2404.9 Limited Spraying Spaces

AMENDMENT
This section has been amended at the state or city level.
Limited spraying spaces shall comply with Sections N2404.9.1 through N2404.9.4.

N2404.9.1 Job Size

AMENDMENT
This section has been amended at the state or city level.
The aggregate surface area to be sprayed shall not exceed 9 square feet (0.84 m2).

N2404.9.2 Frequency

AMENDMENT
This section has been amended at the state or city level.
Spraying operations shall not be of a continuous nature.

N2404.9.3 Ventilation

AMENDMENT
This section has been amended at the state or city level.
Positive mechanical ventilation providing a minimum of six complete air changes per hour shall be installed. Such system shall meet the requirements of this code for handling flammable vapor areas. Explosion venting is not required.

N2404.9.4 Electrical Wiring

AMENDMENT
This section has been amended at the state or city level.
Electrical wiring within 10 feet (3048 mm) of the floor and 20 feet (6096 mm) horizontally of the limited spraying space shall be designed for Class I, Division 2 locations in accordance with the Electrical Code.

Section N2405 Dipping Operations

AMENDMENT
This section has been amended at the state or city level.

N2405.1 General

AMENDMENT
This section has been amended at the state or city level.
Dip-tank operations shall comply with the requirements of Section N2403 and Sections N2405.2 through N2405.11.

N2405.2 Location of Dip-Tank Operations

AMENDMENT
This section has been amended at the state or city level.
Dip-tank operations conducted in buildings used for Group A, I or R occupancies shall be located in a room designed for that purpose, equipped with an approved automatic sprinkler system and separated vertically and horizontally from other areas in accordance with this code.

N2405.3 Construction of Dip Tanks

AMENDMENT
This section has been amended at the state or city level.
Dip tanks shall be constructed in accordance with Sections N2405.3.1 through N2405.3.4.2 and NFPA 34. Dip tanks, including drain boards, shall be constructed of noncombustible material and their supports shall be of heavy metal, reinforced concrete or masonry.

N2405.3.1 Overflow

AMENDMENT
This section has been amended at the state or city level.
Dip tanks greater than 150 gallons (568 L) in capacity or 10 square feet (0.93 m2) in liquid surface area shall be equipped with a trapped overflow pipe leading to an approved location outside the building. The bottom of the overflow connection shall not be less than 6 inches (152 mm) below the top of the tank.

N2405.3.2 Bottom Drains

AMENDMENT
This section has been amended at the state or city level.
Dip tanks greater than 500 gallons (1893 L) in liquid capacity shall be equipped with bottom drains that are arranged to automatically and manually drain the tank quickly in the event of a fire unless the viscosity of the liquid at normal atmospheric temperature makes this impractical. Manual operation shall be from a safe, accessible location. Where gravity flow is not practicable, automatic pumps shall be provided. Such drains shall be trapped and discharged to a closed, vented salvage tank or to an approved outside location.

Exception: Dip tanks containing Class IIIB combustible liquids where the liquids are not heated above room temperature and the process area is protected by automatic sprinklers.

N2405.3.3 Dipping Liquid Temperature Control

AMENDMENT
This section has been amended at the state or city level.
Protection against the accumulation of vapors, self-ignition and excessively high temperatures shall be provided for dipping liquids that are heated directly or heated by the surfaces of the object being dipped.

N2405.3.4 Dip-Tank Covers

AMENDMENT
This section has been amended at the state or city level.
Dip-tank covers allowed by Section N2405.4.1 shall be capable of manual operation and shall be automatic closing by approved automatic-closing devices designed to operate in the event of a fire.

N2405.3.4.1 Construction

AMENDMENT
This section has been amended at the state or city level.
Covers shall be constructed of noncombustible material or be of a tin-clad type with enclosing metal applied with locked joints.

N2405.3.4.2 Supports

AMENDMENT
This section has been amended at the state or city level.
Chain or wire rope shall be utilized for cover supports or operating mechanisms.

N2405.4 Fire Protection

AMENDMENT
This section has been amended at the state or city level.
Dip-tank operations shall be protected in accordance with Sections N2405.4.1 and N2405.4.1.1.

N2405.4.1 Fixed Fire-Extinguishing Equipment

AMENDMENT
This section has been amended at the state or city level.
An approved automatic fire-extinguishing system or dip-tank cover in accordance with Section N2405.3.4 shall be provided for the following dip tanks:
  1. Dip tanks less than 150 gallons (568 L) in capacity or 10 square feet (0.93 m2) in liquid surface area.
  2. Dip tanks containing a liquid with a flash point below 110°F (43°C) used in such manner that the liquid temperature could equal or be greater than its flash point from artificial or natural causes, and having both a capacity of more than 10 gallons (37.9 L) and a liquid surface area of more than 4 square feet (0.37 m2).

N2405.4.1.1 Fire-Extinguishing System

AMENDMENT
This section has been amended at the state or city level.
An approved automatic fire-extinguishing system shall be provided for dip tanks with a 150-gallon (568 L) or more capacity or 10 square feet (0.93 m2) or larger in a liquid surface area. Fire-extinguishing system design shall be in accordance with NFPA 34.

N2405.5 Reserved

AMENDMENT
This section has been amended at the state or city level.

N2405.6 Sources of Ignition

AMENDMENT
This section has been amended at the state or city level.
Control of sources of ignition shall be in accordance with Section N2403.2.

[M] N2405.7 Ventilation of Flammable Vapor Areas

AMENDMENT
This section has been amended at the state or city level.
Flammable vapor areas shall be provided with mechanical ventilation adequate to prevent the dangerous accumulation of vapors. Required ventilation systems shall be arranged such that the failure of any ventilating fan shall automatically stop the dipping conveyor system.

N2405.8 Conveyor Interlock

AMENDMENT
This section has been amended at the state or city level.
Dip tanks utilizing a conveyor system shall be arranged such that in the event of a fire, the conveyor system shall automatically cease motion and the required tank bottom drains shall open.

N2405.9 Hardening and Tempering Tanks

AMENDMENT
This section has been amended at the state or city level.
Hardening and tempering tanks shall comply with Sections N2405.3 through N2405.3.3 and N2405.8, but shall be exempt from other provisions of Section N2405.

N2405.9.1 Location

AMENDMENT
This section has been amended at the state or city level.
Tanks shall be located as far as practical from furnaces and shall not be located on or near combustible floors.

N2405.9.2 Hoods

AMENDMENT
This section has been amended at the state or city level.
Tanks shall be provided with a noncombustible hood and vent or other approved venting means, terminating outside of the structure to serve as a vent in case of a fire. Such vent ducts shall be treated as flues and proper clearances shall be maintained from combustible materials.

N2405.9.3 Alarms

AMENDMENT
This section has been amended at the state or city level.
Tanks shall be equipped with a high-temperature limit switch arranged to sound an alarm when the temperature of the quenching medium reaches 50°F (10°C) below the flash point.

N2405.9.4 Fire Protection

AMENDMENT
This section has been amended at the state or city level.
Hardening and tempering tanks greater than 500 gallons (1893 L) in capacity or 25 square feet (2.3 m2) in liquid surface area shall be protected by an approved automatic fire-extinguishing system complying with Chapter 9 of this code.

N2405.9.5 Use of Air Pressure

AMENDMENT
This section has been amended at the state or city level.
Air under pressure shall not be used to fill or agitate oil in tanks.

N2405.10 Flow-Coating Operations

AMENDMENT
This section has been amended at the state or city level.
Flow-coating operations shall comply with the requirements for dip tanks. The area of the sump and any areas on which paint flows shall be considered to be the area of a dip tank.

N2405.10.1 Paint Supply

AMENDMENT
This section has been amended at the state or city level.
Paint shall be supplied by a gravity tank not exceeding 10 gallons (38 L) in capacity or by direct low-pressure pumps arranged to shut down automatically in case of a fire by means of approved heat-actuated devices.

N2405.11 Roll-Coating Operations

AMENDMENT
This section has been amended at the state or city level.
Roll-coating operations shall comply with Section N2405.10.

Section N2406 Powder Coating

AMENDMENT
This section has been amended at the state or city level.

N2406.1 General

AMENDMENT
This section has been amended at the state or city level.
Operations using finely ground particles of protective finishing material applied in dry powder form by a fluidized bed, an electrostatic fluidized bed, powder spray guns or electrostatic powder spray guns shall comply with Sections N2406.2 through N2406.7. In addition, Section N2407 shall apply to fixed electrostatic equipment used in powder coating operations.

N2406.2 Location

AMENDMENT
This section has been amended at the state or city level.
Powder coating operations shall be conducted in enclosed powder coating rooms, enclosed powder coating facilities which are ventilated or ventilated spray booths.

N2406.3 Construction of Powder Coating Rooms and Booths

AMENDMENT
This section has been amended at the state or city level.
Powder coating rooms shall be constructed of noncombustible materials. Spray booths shall be constructed in accordance with Section N2404.3.2.

Exception: Listed spray-booth assemblies that are constructed of other materials shall be allowed.

N2406.4 Fire Protection

AMENDMENT
This section has been amended at the state or city level.
Areas used for powder coating shall be protected by an approved automatic fire-extinguishing system complying with Chapter 9 of this code.

N2406.4.1 Additional Protection for Fixed Systems

AMENDMENT
This section has been amended at the state or city level.
Automated powder application equipment shall be protected by the installation of an approved, supervised flame detection apparatus that shall react to the presence of flame within 0.5 second and shall accomplish all of the following:
  1. Shutting down of energy supplies (electrical and compressed air) to conveyor, ventilation, application, transfer and powder collection equipment.
  2. Closing of segregation dampers in associated ductwork to interrupt airflow from application equipment to powder collectors.
  3. Activation of an alarm that is audible throughout the powder coating room or booth.

N2406.5 Reserved

AMENDMENT
This section has been amended at the state or city level.

N2406.6 Sources of Ignition

AMENDMENT
This section has been amended at the state or city level.
Control of sources of ignition shall be in accordance with Sections N2403.2 and N2406.6.1.