TABLE 901.6.1 FIRE PROTECTION SYSTEM MAINTENANCE STANDARDS
|Portable fire extinguishers||NFPA 10|
|Carbon dioxide fire-extinguishing system||NFPA 12|
|Halon 1301 fire-extinguishing systems||NFPA 12A|
|Dry-chemical extinguishing systems||NFPA 17|
|Wet-chemical extinguishing systems||NFPA 17A|
|Water-based fire protection systems||NFPA 25|
|Fire alarm systems||NFPA 72|
|Water-mist systems||NFPA 750|
|Clean-agent extinguishing systems||NFPA 2001|
Where utilized, fire watches shall be provided with at least one approved means for notification of the fire department and their only duty shall be to perform constant patrols of the protected premises and keep watch for fires.
Exception: The code enforcement official is permitted to waive the requirement for evacuation or a fire watch where there is not a substantial risk to life safety or where alternatives to maintain an equivalent level of safety are prescribed.
ALARM NOTIFICATION APPLIANCE. A fire alarm system component such as a bell, horn, speaker, light, or text display that provides audible, tactile, or visible outputs, or any combination thereof.
ALARM SIGNAL. A signal indicating an emergency requiring immediate action, such as a signal indicative of fire.
ALARM VERIFICATION FEATURE. A feature of automatic fire detection and alarm systems to reduce unwanted alarms wherein smoke detectors report alarm conditions for a minimum period of time, or confirm alarm conditions within a given time period, after being automatically reset, in order to be accepted as a valid alarm-initiation signal.
ANNUNCIATOR. A unit containing one or more indicator lamps, alphanumeric displays, or other equivalent means in which each indication provides status information about a circuit, condition or location.
AUDIBLE ALARM NOTIFICATION APPLIANCE. A notification appliance that alerts by the sense of hearing.
AUTOMATIC. As applied to fire protection devices, is a device or system providing an emergency function without the necessity for human intervention and activated as a result of a predetermined temperature rise, rate of temperature rise, or combustion products.
AUTOMATIC FIRE-EXTINGUISHING SYSTEM. An approved system of devices and equipment which automatically detects a fire and discharges an approved fire-extinguishing agent onto or in the area of a fire.
AUTOMATIC SPRINKLER SYSTEM. A sprinkler system, for fire protection purposes, is an integrated system of underground and overhead piping designed in accordance with fire protection engineering standards. The system includes a suitable water supply. The portion of the system above the ground is a network of specially sized or hydraulically designed piping installed in a structure or area, generally overhead, and to which automatic sprinklers are connected in a systematic pattern. The system is usually activated by heat from a fire and discharges water over the fire area.
AVERAGE AMBIENT SOUND LEVEL. The root mean square, A-weighted sound pressure level measured over a 24-hour period.
CARBON DIOXIDE EXTINGUISHING SYSTEM. A system supplying carbon dioxide (CO2) from a pressurized vessel through fixed pipes and nozzles. The system includes a manual- or automatic-actuating mechanism.
CLEAN AGENT. Electrically nonconducting, volatile, or gaseous fire extinguishant that does not leave a residue upon evaporation.
CONSTANTLY ATTENDED LOCATION. A designated location at a facility staffed by trained personnel on a continuous basis where alarm or supervisory signals are monitored and facilities are provided for notification of the fire department or other emergency services.
DELUGE SYSTEM. A sprinkler system employing open sprinklers attached to a piping system connected to a water supply through a valve that is opened by the operation of a detection system installed in the same area as the sprinklers. When this valve opens, water flows into the piping system and discharges from all sprinklers attached thereto.
DETECTOR, HEAT. A fire detector that senses heat produced by burning substances. Heat is the energy produced by combustion that causes substances to rise in temperature.
DRY-CHEMICAL EXTINGUISHING AGENT. A powder composed of small particles, usually of sodium bicarbonate, potassium bicarbonate, urea-potassium-based bicarbonate, potassium chloride or monoammonium phosphate, with added particulate material supplemented by special treatment to provide resistance to packing, resistance to moisture absorption (caking) and the proper flow capabilities.
EMERGENCY ALARM SYSTEM. A system to provide indication and warning of emergency situations involving hazardous materials.
EMERGENCY VOICE/ALARM COMMUNICATIONS. Dedicated manual or automatic facilities for originating and distributing voice instructions, as well as alert and evacuation signals pertaining to a fire emergency, to the occupants of a building.
FIRE ALARM BOX, MANUAL. See "Manual fire alarm box."
FIRE ALARM CONTROL UNIT. A system component that receives inputs from automatic and manual fire alarm devices and is capable of supplying power to detection devices and transponder(s) of off-premises transmitter(s). The control unit is capable of providing a transfer of power to the notification appliances and transfer of condition to relays of devices.
FIRE ALARM SIGNAL. A signal initiated by a fire alarm-initiating device such as a manual fire alarm box, automatic fire detector, water-flow switch, or other device whose activation is indicative of the presence of a fire or fire signature.
FIRE ALARM SYSTEM. A system or portion of a combination system consisting of components and circuits arranged to monitor and annunciate the status of fire alarm or supervisory signal-initiating devices and to initiate the appropriate response to those signals.
FIRE AREA. The aggregate floor area enclosed and bounded by fire walls, fire barriers, exterior walls, or fire-resistance-rated horizontal assemblies of a building. [B]
FIRE DETECTOR, AUTOMATIC. A device designed to detect the presence of a fire signature and to initiate action.
FIRE PROTECTION SYSTEM. Approved devices, equipment and systems or combinations of systems used to detect a fire, activate an alarm, extinguish or control a fire, control or manage smoke and products of a fire or any combination thereof.
FIRE SAFETY FUNCTIONS. Building and fire control functions that are intended to increase the level of life safety for occupants or to control the spread of the harmful effects of fire.
FOAM-EXTINGUISHING SYSTEM. A special system discharging a foam made from concentrates, either mechanically or chemically, over the area to be protected.
HALOGENATED EXTINGUISHING SYSTEM. A fire-extinguishing system using one or more atoms of an element from the halogen chemical series: fluorine, chlorine, bromine and iodine.
IMPAIRMENT COORDINATOR. The person responsible for the maintenance of a particular fire protection system.
INITIATING DEVICE. A system component that originates transmission of a change-of-state condition, such as in a smoke detector, manual fire alarm box, or supervisory switch.
MANUAL FIRE ALARM BOX. A manually operated device used to initiate an alarm signal.
MULTIPLE-STATION ALARM DEVICE. Two or more single-station alarm devices that can be interconnected such that actuation of one causes all integral or separate audible alarms to operate. It also can consist of one single-station alarm device having connections to other detectors or to a manual fire alarm box.
MULTIPLE-STATION SMOKE ALARM. Two or more single-station alarm devices that are capable of interconnection such that actuation of one causes all integral or separate audible alarms to operate.
NUISANCE ALARM. An alarm caused by mechanical failure, malfunction, improper installation, or lack of proper maintenance, or an alarm activated by a cause that cannot be determined.
RECORD DRAWINGS. Drawings ("as builts") that document the location of all devices, appliances, wiring, sequences, wiring methods, and connections of the components of a fire alarm system as installed.
SINGLE-STATION SMOKE ALARM. An assembly incorporating the detector, the control equipment, and the alarm-sounding device in one unit, operated from a power supply either in the unit or obtained at the point of installation.
SLEEPING UNIT. A room or space in which people sleep, which can also include permanent provisions for living, eating, and either sanitation or kitchen facilities but not both. Such rooms and spaces that are also part of a dwelling unit are not sleeping units. [B]
SMOKE ALARM. A single- or multiple-station alarm responsive to smoke and not connected to a system.
SMOKE DETECTOR. A listed device that senses visible or invisible particles of combustion.
STANDPIPE SYSTEM, CLASSES OF. Standpipe classes are as follows:
SUPERVISORY SERVICE. The service required to monitor performance of guard tours and the operative condition of fixed suppression systems or other systems for the protection of life and property.
SUPERVISORY SIGNAL. A signal indicating the need of action in connection with the supervision of guard tours, the fire suppression systems or equipment, or the maintenance features of related systems.
SUPERVISORY SIGNAL-INITIATING DEVICE. An initiating device such as a valve supervisory switch, water level indicator, or low-air pressure switch on a dry-pipe sprinkler system whose change of state signals an off-normal condition and its restoration to normal of a fire protection or life safety system; or a need for action in connection with guard tours, fire suppression systems or equipment, or maintenance features of related systems.
TIRES, BULK STORAGE OF. Storage of tires where the area available for storage exceeds 20,000 cubic feet (566 m3).
TROUBLE SIGNAL. A signal initiated by the fire alarm system or device indicative of a fault in a monitored circuit or component.
VISIBLE ALARM NOTIFICATION APPLIANCE. A notification appliance that alerts by the sense of sight.
WET-CHEMICAL EXTINGUISHING AGENT. A solution of water and potassium-carbonate-based chemical, potassium-acetate-based chemical or a combination thereof, forming an extinguishing agent.
WIRELESS PROTECTION SYSTEM. A system or a part of a system that can transmit and receive signals without the aid of wire.
ZONE. A defined area within the protected premises. A zone can define an area from which a signal can be received, an area to which a signal can be sent, or an area in which a form of control can be executed.
Exception: Spaces or areas in telecommunications buildings used exclusively for telecommunications equipment, associated electrical power distribution equipment, batteries and standby engines, provided those spaces or areas are equipped throughout with an automatic fire alarm system and are separated from the remainder of the building by fire barriers consisting of not less than 1-hour fire-resistance-rated walls and 2-hour fire-resistance-rated floor/ ceiling assemblies.
Exception: Areas used exclusively as participant sports areas where the main floor area is located at the same level as the level of exit discharge of the main entrance and exit.
Exception: Areas used exclusively as participant sports areas where the main floor area is located at the same level as the level of exit discharge of the main entrance and exit.
Exception: An automatic sprinkler system is not required in any fire area or area below the level of exit discharge where every classroom throughout the building has at least one exterior exit door at ground level.
Where the design area of the sprinkler system consists of a corridor protected by one row of sprinklers, the maximum number of sprinklers required to be calculated is 13.
TABLE 903.2.4.2 GROUP H-5 SPRINKLER DESIGN CRITERIA
|LOCATION|| OCCUPANCY HAZARD |
|Fabrication areas||Ordinary Hazard Group 2|
|Service corridors||Ordinary Hazard Group 2|
|Storage rooms without dispensing||Ordinary Hazard Group 2|
|Storage rooms with dispensing||Extra Hazard Group 2|
|Corridors||Ordinary Hazard Group 2|
Exception: Ducts where the largest cross-sectional diameter of the duct is less than 10 inches (254 mm).
TABLE 903.2.13 ADDITIONAL REQUIRED FIRE-EXTINGUISHING SYSTEMS
|914.3.1||High rise buildings|
|914.7.1||Special amusement buildings|
|1208.2||Dry cleaning plants|
|1208.3||Dry cleaning machines|
|1504.2||Spray finishing in Group A, E, I or R|
|1504.4||Spray booths and spray rooms|
|1505.2||Dip-tank rooms in Group A, I or R|
|1505.9.4||Hardening and tempering tanks|
|1803.10.1.1||HPM work station exhaust|
|1803.10.2||HPM gas cabinets and exhausted enclosures|
|1803.10.3||HPM exit access corridor|
|1803.10.4||HPM exhaust ducts|
|1803.10.4.1||HPM noncombustible ducts|
|1803.10.4.2||HPM combustible ducts|
|1907.3||Lumber production conveyor enclosures|
|1908.7||Recycling facility conveyor enclosures|
ADDITIONAL REQUIRED FIRE-EXTINGUISHING SYSTEMS
|2106.1||Class A and B ovens|
|2106.2||Class C and D ovens|
|2184.108.40.206.2||Hydrogen motor fuel-dispensing area canopies|
|Table 2306.2||Storage fire protection|
|2704.5||Indoor storage of hazardous materials|
|2705.1.8||Indoor dispensing of hazardous materials|
|2806.3.2||Aerosol display and merchandising areas|
|2904.5||Storage of more than 1,000 cubic feet of loose combustible fibers|
|3404.3.7.5.1||Flammable and combustible liquid storage rooms|
|3404.3.8.4||Flammable and combustible liquid storage warehouses|
|3405.3.7.3||Flammable and combustible liquid Group H-2 or H-3 areas|
|3704.1.2||Gas cabinets for highly toxic and toxic gas|
|3704.1.3||Exhausted enclosures for highly toxic and toxic gas|
|3704.2.2.6||Gas rooms for highly toxic and toxic gas|
|3704.3.3||Outdoor storage for highly toxic and toxic gas|
|4106.2.2||Exhausted enclosures or gas cabinets for silane gas|
|4204.1.1||Pyroxylin plastic storage cabinets|
|4204.1.3||Pyroxylin plastic storage vaults|
|4204.2||Pyroxylin plastic storage and manufacturing|
Exception: Kitchen equipment under exhaust hoods protected with a fire-extinguishing system in accordance with Section 904.
Exception: An approved indicating control valve supervised in the open position in accordance with Section 903.4.
Exception: Existing buildings.
Exception: Automatic sprinkler systems shall not be required to be equipped with manual actuation means.
Exception: Frangible bulbs are not required to be replaced annually.
Exception: Standpipe systems are not required in Group R-3 occupancies.
Exception: Where the building or area is equipped throughout with an automatic sprinkler system, a 1 1 / 2 inch (38 mm) hose connection shall be installed in accordance with NFPA 13 or in accordance with NFPA 14 for Class II or III standpipes.
Exception: Where floor areas adjacent to a horizontal exit are reachable from exit stairway hose connections by a 30-foot (9144 mm) hose stream from a nozzle attached to 100 feet (30480 mm) of hose, a hose connection shall not be required at the horizontal exit.
Exception: In buildings equipped throughout with an approved automatic sprinkler system, laterals that are not located within an enclosed stairway or pressurized enclosure are not required to be enclosed within fire-resistance-rated construction.
Exception: Where subject to freezing and in accordance with NFPA 14.
TABLE 906.1 ADDITIONAL REQUIRED PORTABLE FIRE EXTINGUISHERS
|309.4||Powered industrial trucks|
|1105.2||Aircraft towing vehicles|
|1105.3||Aircraft welding apparatus|
|1105.4||Aircraft fuel-servicing tank vehicles|
|1105.5||Aircraft hydrant fuel-servicing vehicles|
|1105.6||Aircraft fuel-dispensing stations|
|1107.7||Heliports and helistops|
|1208.4||Dry cleaning plants|
|1415.1||Buildings under construction or demolition|
|1909.5||Exterior lumber storage|
|2205.5||Motor fuel-dispensing facilities|
|2210.6.4||Marine motor fuel-dispensing facilities|
|2404.12||Tents, canopies and membrane structures|
|2604.2.6||Welding and other hot work|
|3403.2.1||Flammable and combustible liquids, general|
|3404.3.3.1||Indoor storage of flammable and combustible liquids|
|3404.3.7.5.2||Liquid storage rooms for flammable and combustible liquids|
|3405.4.9||Solvent distillation units|
|3406.2.7||Farms and construction sites—flammable and combustible liquids storage|
|3406.4.10.1||Bulk plants and terminals for flammable and combustible liquids|
|3406.5.4.5||Commercial, industrial, governmental or manufacturing establishments—fuel dispensing|
|3406.6.4||Tank vehicles for flammable and combustible liquids|
TABLE 906.3(1) FIRE EXTINGUISHERS FOR CLASS A FIRE HAZARDS
|LIGHT (Low) |
|Minimum Rated Single |
|Maximum Floor Area Per |
Unit of A
|Maximum Floor Area For |
|Maximum Trave |
Distance to Extinguisher
|75 feet||75 feet||75 feet|
a. Two 2.5-gallon water-type extinguishers shall be deemed the equivalent of one 4-A rated extinguisher.
b. Annex E.3.3 of NFPA 10 provides more details concerning application of the maximum floor area criteria.
c. Two water-type extinguishers each with a 1-A rating shall be deemed the equivalent of one 2-A rated extinguisher for Light (Low) Hazard Occupancies.
TABLE 906.3(2) FLAMMABLE OR COMBUSTIBLE LIQUIDS WITH DEPTHS OF LESS THAN OR EQUAL TO 0.25-INCH
|TYPE OF HAZARD|| BASIC MINIMUM |
| MAXIMUM TRAVEL |
NOTE. For requirements on water-soluble flammable liquids and alternative sizing criteria, see Section 4.3 of NFPA 10
The automatic fire detectors shall be smoke detectors. Where ambient conditions prohibit installation of automatic smoke detection, other automatic fire detection shall be allowed.
Exception: Where approved, the prerecorded announcement is allowed to be manually deactivated for a period of time, not to exceed 3 minutes, for the sole purpose of allowing a live voice announcement from an approved, constantly attended location.
Exception: Manual fire alarm boxes in resident or patient sleeping areas of Group I-1 and I-2 occupancies shall not be required at exits if located at all nurses’ control stations or other constantly attended staff locations, provided such stations are visible and continuously accessible and that travel distances required in Section 907.4.1 are not exceeded.
Manual fire alarm boxes are allowed to be locked in areas occupied by detainees, provided that staff members are present within the subject area and have keys readily available to operate the manual fire alarm boxes.
The emergency voice/alarm communication system shall be allowed to be used for other announcements, provided the manual fire alarm use takes precedence over any other use.
Exception: A manual fire alarm system is not required in buildings not more than two stories in height where all individual sleeping units and contiguous attic and crawl spaces are separated from each other and public or common areas by at least 1-hour fire partitions and each individual sleeping unit has an exit directly to a public way, exit court or yard.
Exception: An automatic fire detection system is not required in buildings that do not have interior corridors serving sleeping units and where each sleeping unit has a means of egress door opening directly to an exterior exit access that leads directly to an exit.
Exception: In high-rise buildings, the building fire alarm shall activate in accordance with Section 907.2.12.2.
Exception: Group R-2 occupancies used as dormitories, fraternities, sororities and similar student housing meeting the requirements of 907.2.9.1.3.
Exception: Single- or multiple-station smoke alarms shall not be required where the building is equipped throughout with an automatic fire detection system in accordance with Section 907.2.6.
Exception: Smoke alarms are not required to be equipped with battery backup in Group R-1 where they are connected to an emergency electrical system.
Exception: In areas where ambient conditions will cause a smoke detection system to alarm, an approved alternative type of automatic detector shall be installed.
Such system response shall also include activation of a prerecorded message, clearly audible throughout the special amusement building, instructing patrons to proceed to the nearest exit. Alarm signals used in conjunction with the prerecorded message shall produce a sound which is distinctive from other sounds used during normal operation.
The wiring to the auxiliary devices and equipment used to accomplish the above fire safety functions shall be monitored for integrity in accordance with NFPA 72.
Exception: Fire department radio systems where approved by the fire department.
Exception: Occupancies with an existing, previously approved fire alarm system.
Exception: Where each sleeping room has a means of egress door opening directly to an exterior egress balcony that leads directly to the exits in accordance with Section 1014.5, and the building is not more than three stories in height.
Exception: Buildings less than two stories in height where all sleeping units, attics and crawl spaces are separated by 1-hour fire-resistance-rated construction and each sleeping unit has direct access to a public way, exit court or yard.
Exception: Buildings that have single-station smoke alarms meeting or exceeding the requirements of Section 907.2.10.1 and where the fire alarm system includes at least one manual fire alarm box per floor arranged to initiate the alarm.
Exception: Smoke alarms are permitted to be solely battery operated: in existing buildings where no construction is taking place; in buildings that are not served from a commercial power source; and in existing areas of buildings undergoing alterations or repairs that do not result in the removal of interior walls or ceiling finishes exposing the structure, unless there is an attic, crawl space or basement available which could provide access for building wiring without the removal of interior finishes.
Exception: In buildings protected by an automatic sprinkler system in accordance with 903.3.1.1 or 903.3.1.2, the travel distance to the nearest box shall not apply.
Exception: Where the manufacturer has permanently provided this information on the manual fire alarm box.
Exception: Automatic sprinkler system zones shall not exceed the area permitted by NFPA 13.
TABLE 907.10.1.3 VISIBLE AND AUDIBLE ALARMS
|NUMBER OF SLEEPING UNITS|| SLEEPING ACCOMMODATIONS |
WITH VISIBLE AND AUDIBLE
|6 to 25||2|
|26 to 50||4|
|51 to 75||7|
|76 to 100||9|
|101 to 150||12|
|151 to 200||14|
|201 to 300||17|
|301 to 400||20|
|401 to 500||22|
|501 to 1,000||5% of total|
|1,001 and over||50 plus 3 for each 100 over 1,000|
Exception: Visible alarm notification appliances shall be allowed in lieu of audible alarm notification appliances in critical care areas of Group I-2 occupancies.
Exception: Supervisory service is not required for:
Exception: Devices or equipment that are inaccessible for safety considerations shall be tested during scheduled shutdowns where approved by the code enforcement official, but not less than every 18 months.
PRESSURIZATION. The creation and maintenance of pressure levels in zones of a building, including elevator shafts and stairwells, that are higher than the pressure level at the smoke source, such pressure levels being produced by positive pressures of a supply of uncontaminated air, by exhausting air and smoke at the smoke source, or by a combination of these methods.
SMOKE. Airborne solid and liquid particulates and gases evolve when a material undergoes pyrolysis or combustion, including the quantity of air that is entrained or otherwise mixed into the mass.
SMOKE BARRIER. A continuous membrane, either vertical or horizontal, such as a wall, floor or ceiling assembly, that is designed and constructed to restrict the movement of smoke.
SMOKE-CONTROL MODE. A predefined operational configuration of a system or device for the purpose of smoke control.
SMOKE-CONTROL SYSTEM, MECHANICAL. An engineered system that uses mechanical fans to produce pressure differences across smoke barriers or to establish air flows to limit and direct smoke movement.
SMOKE-CONTROL SYSTEM, PASSIVE. A system of smoke barriers arranged to limit the migration of smoke.
SMOKE-CONTROL ZONE. A space within a building enclosed by smoke barriers.
SMOKE DAMPER. A device that meets the requirements of approved recognized standards and that is designed to resist the passage of air or smoke. A combination fire and smoke damper shall meet the requirements of approved recognized standards.
SMOKE-EXHAUST SYSTEM. A mechanical or gravity system intended to move smoke from the smoke zone to the exterior of the building, including smoke removal, purging and venting systems, as well as the function of exhaust fans used to reduce the pressure in a smoke zone.
STACK EFFECT. The vertical airflow within buildings caused by temperature differences.
TENABLE ENVIRONMENT. An environment in which the quantity and location of smoke is limited or otherwise restricted to allow for ready evacuation through the space.
ZONED SMOKE CONTROL. A smoke-control system using pressure differences between adjacent smoke-control zones.
|A||=||Total leakage area, square feet (m2).|
|AF||=||Unit floor or roof area of barrier, square feet (m2).|
|Aw||=||Unit wall area of barrier, square feet (m2).|
The leakage area ratios shown do not include openings due to doors, operable windows or similar gaps. These shall be included in calculating the total leakage area.
In buildings allowed to be other than fully sprinklered, the smoke control system shall be designed to achieve pressure differences at least two times the maximum calculated pressure difference produced by the design fire.
|F = Fdc + K(WADP)/2(W- d)||(Equation 9-1)|
|A||=||Door area, square feet (m2).|
|d||=||Distance from door handle to latch edge of door, feet (m).|
|F||=||Total door opening force, pounds (N).|
|Fdc||=||Force required to overcome closing device, pounds (N).|
|K||=||Coefficient 5.2 (1.0).|
|W||=||Door width, feet (m).|
|DP||=||Design pressure difference, inches of water (Pa).|
|v = 217.2 [h (Tf - To)/(Tf + 460)]1/2||(Equation 9-2)|
|h||=||Height of opening, feet (m).|
|Tf||=||Temperature of smoke, °F (K).|
|To||=||Temperature of ambient air, °F (K).|
|v||=||Air velocity, feet per minute (m/minute).|
|Ts = (Qc/mc) + (Ta)||(Equation 9-3)|
|c||=||Specific heat of smoke at smokelayer temperature, Btu/lb°F • (kJ/kg • K).|
|m||=||Exhaust rate, pounds per second (kg/s).|
|Qc||=||Convective heat output of fire, Btu/s (kW).|
|Ta||=||Ambient temperature, °F (K).|
|Ts||=||Smoke temperature, °F (K).|
Exception: Reduced Ts as calculated based on the assurance of adequate dilution air.
Exception: Flexible connections (for the purpose of vibration isolation) complying with the Mechanical Code of New York State and which are constructed of approved fire-resistance-rated materials.
Control systems for mechanical smoke control systems shall include provisions for verification. Verification shall include positive confirmation of actuation, testing, manual override, the presence of power downstream of all disconnects and, through a preprogrammed weekly test sequence, report abnormal conditions audibly, visually and by printed report.
Exception: Nonmetallic tubing used within control panels and at the final connection to devices, provided all of the following conditions are met:
Exception: Power disconnects required by Chapter 27 of the Building Code of New York State .
Exception: In buildings of phased construction, a temporary certificate of occupancy, as approved by the code enforcement official, shall be allowed, provided that those portions of the building to be occupied meet the requirements of this section and that the remainder does not pose a significant hazard to the safety of the proposed occupants or adjacent buildings.
Exception: Group S-1 aircraft repair hangars.
TABLE 910.3 REQUIREMENTS FOR DRAFT CURTAINS AND SMOKE AND HEAT VENTSa
| OCCUPANCY GROUP AND |
| DESIGNATED |
| MINIMUM DRAFT |
| MAXIMUM AREA |
| VENT-AREA TO |
| MAXIMUM SPACING |
OF VENT CENTERS
| MAXIMUM |
WALL OR DRAFT
|Group F-1 and S-1||-||0.2 × Hd but ≥ 4||50,000||1:100||120||60|
| High-piled storage (see |
|> 20 ≤ 40||6||8,000||1:75||100||55|
| High-piled storage (see |
I-IV (Option 2)
|> 20 ≤ 40||4||3,000||1:50||100||50|
| High-piled storage see |
Section 910.2.2) High
hazard (Option 1)
|> 20 ≤ 30||6||6,000||1:40||90||45|
| High-piled storage (see |
Section 910.2.2) High
hazard (Option 2)
|> 20 ≤ 30||4||2,000||1:30||75||40|
a. Requirements for rack storage er 23. For solid-piled storage heights in excess of those indicated, an approved engineered design shall be used.
b. The distance specified is the maximum distance from any vent in a particular draft curtained area to walls or draft curtains which form the perimeter of the draft curtained area.
c. Where draft curtains are not required, the vent area to floor area ratio shall be calculated based on a minimum draft curtain depth of 6 feet (Option 1).
d. "H" is the height of the vent, in feet, above the floor.
Exception: Gravity-operated drop out vents complying with Section 910.3.2.1.
Exception: Where areas of buildings are equipped with ESFR sprinklers, draft curtains shall not be provided within these areas. Draft curtains shall only be provided at the separation between the ESFR sprinklers and the conventional sprinklers.
|C = A × 300||(Equation 9-4)|
|C||=||Capacity of mechanical ventilation required, in cubic feet per minute (m3/s).|
|A||=||Area of roof vents provided in square feet (m2) in accordance with Table 910.3.|
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.
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.
Exception: Vents complying with Item 7 of this section.
TABLE 911.1 EXPLOSION CONTROL REQUIREMENTS
|MATERIAL||CLASS||EXPLOSION CONTROL METHODS|
|Barricade construction|| Explosion (deflagration) venting or |
explosion (deflagration) prevention
|Combustible dustsa||—||Not required||Required|
|Cryogenic fluids||Flammable||Not required||Required|
|Explosives||Division 1.1||Required||Not required|
|Division 1.2||Required||Not required|
|Division 1.3||Not required||Required|
|Division 1.4||Not required||Required|
|Division 1.5||Required||Not required|
|Division 1.6||Required||Not required|
|Flammable gas||Gaseous||Not required||Required|
|Flammable liquids||IAb||Not required||Required|
|Organic peroxides||Unclassified detonable||Required||Not permitted|
|Oxidizer liquids and solids||4||Required||Not permitted|
|Unstable (reactive)||3 detonable||Required||Not permitted|
|3 nondetonable||Not required||Required|
|Water-reactive liquids and solids||3||Not required||Required|
|Acetylene generator rooms||—||Not required||Required|
|Grain processing||—||Not required||Required|
|Liquefied petroleum gas distribution facilities||—||Not required||Required|
|Where explosion hazards existd||Detonation||Required||Not permitted|
b. Storage or use.
c. In open use or dispensing.
d. Rooms containing dispensing and use of hazardous materials when an explosive environment can occur because of the characteristics or nature of the hazardous materials or as a result of the dispensing or use process.
e. A method of explosion control shall be provided when Class 2 water-reactive materials can form potentially explosive mixtures.
Exception: An automatic sprinkler system shall not be required in spaces or areas of open parking garages constructed in accordance with Section 406.2 of the Building Code of New York State.
Exception: An automatic sprinkler system shall not be required in spaces or areas of:
Exception: Automatic sprinklers are not required where the total floor area of a temporary special amusement building is less than 1,000 square feet (93 m 2 ) and the travel distance from any point to an exit is less than 50 feet (15 240 mm).
Exception: Group II hangars, as defined in NFPA 409, storing private aircraft without major maintenance or overhaul are exempt from foam suppression requirements.