Part I Administrative

Part II General Safety Provisions

Part III Building and Equipment Design Features

Part IV Special Occupancies and Operations

Part V Hazardous Materials

Part VI Referenced Standards

Part VII Appendices

Heads up: There are no suggested sections in this chapter.
Heads up: There are no amended sections in this chapter.
CALIFORNIA FIRE CODE — MATRIX ADOPTION TABLE
CHAPTER 50 — HAZARDOUS MATERIALS—GENERAL PROVISIONS
(Matrix Adoption Tables are non-regulatory, intended only as an aid to the user.
See Chapter 1 for state agency authority and building applications.)
Adopting Agency BSC BSC-CG SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
T-24 T-19* 1 2 1/AC AC SS 1 2 3 4
Adopt Entire Chapter
Adopt Entire Chapter as amended (amended sections listed below) X
Adopt only those sections that are listed below
[California Code of Regulations, Title 19, Division 1]
Chapter / Section
5001.2.2.1 X
5001.5.1 X
5001.5.2 X
Table 5003.1.1(1) X
Table 5003.1.1(2) X
5003.10 X
5003.10.2 X
5003.10.2.1 X
5003.10.2.2 X
5003.10.4 X
5003.10.4.1 X
5003.10.4.2 X
5003.10.4.3 X
5003.10.4.4 X
5004.3.1 X
*  The California Code of Regulations (CCR), Title 19, Division 1 provisions that are found in the California Fire Code are a reprint from the current CCR, Title 19, Division 1 text for the code user's convenience only. The scope, applicability and appeals procedures of CCR, Title 19, Division I remain the same.

Prevention, control and mitigation of dangerous conditions related to storage, dispensing, use and handling of hazardous materials shall be in accordance with this chapter.

This chapter shall apply to all hazardous materials, including those materials regulated elsewhere in this code, except that where specific requirements are provided in other chapters, those specific requirements shall apply in accordance with the applicable chapter. Where a material has multiple hazards, all hazards shall be addressed.

Exceptions:

  1. In retail or wholesale sales occupancies, the quantities of medicines, foodstuff or consumer products and cosmetics containing not more than 50 percent by volume of water-miscible liquids and with the remainder of the solutions not being flammable shall not be limited, provided such materials are packaged in individual containers not exceeding 1.3 gallons (5 L).
  2. Quantities of alcoholic beverages in retail or wholesale sales occupancies shall not be limited providing the liquids are packaged in individual containers not exceeding 1.3 gallons (5 L).
  3. Application and release of pesticide and agricultural products and materials intended for use in weed abatement, erosion control, soil amendment or similar applications where applied in accordance with the manufacturers' instructions and label directions.
  4. The off-site transportation of hazardous materials where in accordance with Department of Transportation (DOTn) regulations.
  5. Building materials not otherwise regulated by this code.
  6. Refrigeration systems (see Section 606).
  7. Stationary storage battery systems regulated by Section 608.
  8. The display, storage, sale or use of fireworks and explosives in accordance with Chapter 56.
  9. Corrosives utilized in personal and household products in the manufacturers' original consumer packaging in Group M occupancies.
  10. The storage of distilled spirits and wines in wooden barrels and casks.
  11. The use of wall-mounted dispensers containing alcohol-based hand rubs classified as Class I or II liquids where in accordance with Section 5705.5.
The provisions of this chapter are waived where the fire code official determines that such enforcement is preempted by other codes, statutes or ordinances. The details of any action granting such a waiver shall be recorded and entered in the files of the code enforcement agency.
Hazardous materials are those chemicals or substances defined as such in this code. Definitions of hazardous materials shall apply to all hazardous materials, including those materials regulated elsewhere in this code.
Mixtures shall be classified in accordance with hazards of the mixture as a whole. Mixtures of hazardous materials shall be classified in accordance with nationally recognized reference standards; by an approved qualified organization, individual, or Material Safety Data Sheet (MSDS); or by other approved methods.
Hazardous materials shall be classified according to hazard categories. The categories include materials regulated by this chapter and materials regulated elsewhere in this code.

The material categories listed in this section are classified as physical hazards. A material with a primary classification as a physical hazard can also pose a health hazard.

  1. Explosives and blasting agents.
  2. Combustible liquids.
  3. Flammable solids, liquids and gases.
  4. Organic peroxide solids or liquids.
  5. Oxidizer, solids or liquids.
  6. Oxidizing gases.
  7. Pyrophoric solids, liquids or gases.
  8. Unstable (reactive) solids, liquids or gases.
  9. Water-reactive solids or liquids.
  10. Cryogenic fluids.

The material categories listed in this section are classified as health hazards. A material with a primary classification as a health hazard can also pose a physical hazard.

  1. Highly toxic and toxic materials.
  2. Corrosive materials.
Where approved by the fire code official, buildings and facilities where hazardous materials are stored, used or handled shall be permitted to comply with this section as an alternative to compliance with the other requirements set forth in this chapter and Chapters 51 through 67.
The objective of Section 5001.3 is to protect people and property from the consequences of unauthorized discharge, fires or explosions involving hazardous materials.

Performance-based design alternatives are based on the following functional statements:

  1. Provide safeguards to minimize the risk of unwanted releases, fires or explosions involving hazardous materials.
  2. Provide safeguards to minimize the consequences of an unsafe condition involving hazardous materials during normal operations and in the event of an abnormal condition.
Where safeguards, systems, documentation, written plans or procedures, audits, process hazards analysis, mitigation measures, engineering controls or construction features are required by Sections 5001.3.3.1 through 5001.3.3.18, the details of the design alternative shall be subject to approval by the fire code official. The details of actions granting the use of the design alternatives shall be recorded and entered in the files of the jurisdiction.
The physical- and health-hazard properties of hazardous materials on site shall be known and shall be made readily available to employees, neighbors and the fire code official.
Equipment and operations involving hazardous materials shall be designed, installed and maintained to ensure that they reliably operate as intended.
Safeguards shall be provided to minimize the risk of an unintentional reaction or release that could endanger people or property.
Spill containment systems or means to render a spill harmless to people or property shall be provided where a spill is determined to be a plausible event and where such an event would endanger people or property.
Safeguards shall be provided to minimize the risk of exposing combustible hazardous materials to unintended sources of ignition.
Safeguards shall be provided to minimize the risk of exposing hazardous materials to a fire or physical damage whereby such exposure could endanger or lead to the endangerment of people or property.
Safeguards shall be provided to minimize the risk of and limit damage from a fire or explosion involving explosive hazardous materials whereby such fire or explosion could endanger or lead to the endangerment of people or property.
Where a release of hazardous materials gas or vapor would cause immediate harm to persons or property, means of mitigating the dangerous effects of a release shall be provided.
Where a power supply is relied upon to prevent or control an emergency condition that could endanger people or property, the power supply shall be from a reliable source.
Where ventilation is necessary to limit the risk of creating an emergency condition resulting from normal or abnormal operations, means of ventilation shall be provided.
Process hazard analyses shall be conducted to ensure reasonably the protection of people and property from dangerous conditions involving hazardous materials.
Written documentation of pre-startup safety review procedures shall be developed and enforced to ensure that operations are initiated in a safe manner. The process of developing and updating such procedures shall involve the participation of affected employees.
Written documentation of operating procedures and procedures for emergency shut down shall be developed and enforced to ensure that operations are conducted in a safe manner. The process of developing and updating such procedures shall involve the participation of affected employees.
A written plan for management of change shall be developed and enforced. The process of developing and updating the plan shall involve the participation of affected employees.
A written emergency plan shall be developed to ensure that proper actions are taken in the event of an emergency, and the plan shall be followed if an emergency condition occurs. The process of developing and updating the plan shall involve the participation of affected employees.
Written procedures for investigation and documentation of accidents shall be developed, and accidents shall be investigated and documented in accordance with these procedures.
Where an accidental release of hazardous materials could endanger people or property, either on or off-site, an analysis of the expected consequences of a plausible release shall be performed and utilized in the analysis and selection of active and passive hazard mitigation controls.
Safety audits shall be conducted on a periodic basis to verify compliance with the requirements of this section.
For retail and wholesale storage and display of nonflammable solid and nonflammable or noncombustible liquid hazardous materials in Group M occupancies and storage in Group S occupancies, see Section 5003.11.

5001.5 Permits

AMENDMENT
This section has been amended at the state or city level.
Permits shall be required as set forth in Sections 105.6 and, 105.7, 120, and 121. When required by the fire code official, permittees shall apply for approval to permanently close a storage, use or handling facility. Such application shall be submitted not less thanat least 30 days prior to the termination of the storage, use or handling of hazardous materials. The fire code official is authorized to require that the application be accompanied by an approved facility closure plan in accordance with Section 5001.6.3.

Where required by the fire code official, an application for a permit shall include an HMMP. The HMMP shall include a facility site plan designating the following:

  1. Access to each storage and use area.
  2. Location of emergency equipment.
  3. Location where liaison will meet emergency responders.
  4. Facility evacuation meeting point locations.
  5. The general purpose of other areas within the building.
  6. Location of all above-ground and underground tanks and their appurtenances including, but not limited to, sumps, vaults, below-grade treatment systems and piping.
  7. The hazard classes in each area.
  8. Locations of all control areas and Group H occupancies.
  9. Emergency exits.

[For SFM] The HMMP shall comply with Health and Safety Code, Chapter 6.95, Sections 25500 through 25545, and Title 19, Division 2, Chapter 4.

Where required by the fire code official, an application for a permit shall include an HMIS, such as the Superfund Amendments and Reauthorization Act of 1986 (SARA) Title III, Tier II Report or other approved statement. The HMIS shall include the following information:

  1. Product name.
  2. Component.
  3. Chemical Abstract Service (CAS) number.
  4. Location where stored or used.
  5. Container size.
  6. Hazard classification.
  7. Amount in storage.
  8. Amount in use-closed systems.
  9. Amount in use-open systems.

[For SFM] The HMIS shall comply with Health and Safety Code, Chapter 6.95, Sections 25500 through 25545, and Title 19, Division 2, Chapter 4.

Facilities shall be placed out of service in accordance with Sections 5001.6.1 through 5001.6.3.
Facilities that are temporarily out of service shall continue to maintain a permit and be monitored and inspected.
Facilities for which a permit is not kept current or is not monitored and inspected on a regular basis shall be deemed to be permanently out of service and shall be closed in an approved manner. Where required by the fire code official, permittees shall apply for approval to close permanently storage, use or handling facilities. The fire code official is authorized to require that such application be accompanied by an approved facility closure plan in accordance with Section 5001.6.3.
Where a facility closure plan is required in accordance with Section 5001.5 to terminate storage, dispensing, handling or use of hazardous materials, it shall be submitted to the fire code official not less than 30 days prior to facility closure. The plan shall demonstrate that hazardous materials that are stored, dispensed, handled or used in the facility will be transported, disposed of or reused in a manner that eliminates the need for further maintenance and any threat to public health and safety.
The storage, use and handling of all hazardous materials shall be in accordance with this section.

5003.1.1 Maximum Allowable Quantity Per Control Area

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

The maximum allowable quantity per control area shall be as specified in Tables 5003.1.1(1) through 5003.1.1(4).

For retail and wholesale storage and display in Group M occupancies and Group S storage, see Section 5003.11.

TABLE 5003.1.1(1)

MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA OF HAZARDOUS MATERIALS POSING A PHYSICAL HAZARDa, j, m, n, p

MATERIALCLASSGROUP WHEN THE MAXIMUM ALLOWABLE QUANTITY IS EXCEEDEDSTORAGEbUSE-CLOSED SYSTEMSbUSE-OPEN SYSTEMSb
Solid pounds (cubic feet)Liquid gallons (pounds)Gas (cubic feet at NTP)Solid pounds (cubic feet)Liquid gallons (pounds)Gas (cubic feet at NTP)Solid pounds (cubic feet)Liquid gallons (pounds)
Combustible dustNAH-2See Note qNANASee Note qNANASee Note qNA
Combustible fibersqgLoose BaledoH-3(100)NANA(100)NANA(20)NA
(1,000)(1,000)(200)
Combustible liquidc, iIIH-2 or H-3NA120d,eNANA120dNANA30d
IIIAH-2 or H-3330d, e330d80d
IIIBNA13,200e, f13,200f3,300f
Consumer fireworks1.4GH-3125 e, lNANANANANANANA
Cryogenic FlammableNAH-2NA45dNANA45dNANA10d
Cryogenic InertNANANANANLNANANLNANA
Cryogenic OxidizingNAH-3NA45dNANA45dNANA10d
ExplosivesDivision 1.1H-11e, g(1)e, gNA0.25g(0.25)gNA0.25g(0.25)g
Division 1.2H-11e, g(1)e, g0.25g(0.25)g0.25g(0.25)g
Division 1.3H-1 or H-210e, g(10)e, g1g(1)g1g(1)g
Division 1.4H-350e, g(50)e, g50g(50)gNANA
Division 1.4GH-3125d, e, lNANANANANA
Division 1.5H-11e, g(1)e,g0.25g(0.25)g0.25g(0.25)g
Division 1.6H-11e, gNANANANANA
Flammable gasGaseousH-2NANA1,000d, eNANA1,000d, eNANA
Liquefied(150)d, eNA(150)d, eNA
Flammable liquidcIAH-2
or
NA30d, eNANA30dNANA10d
IB and ICH-3120d, e120d30d
Flammable liquid, combination (IA, IB, IC)NAH-2NA120d, e, hNANA120d, hNANA30d, h
or
H-3
Flammable solidNAH-3125d, eNANA125dNANA25dNA
Inert GasGaseousNANANANLNANANLNANA
LiquefiedNANANANLNANANLNANA
Organic peroxideUDH-11e, g(1)e, gNA0.25g(0.25)gNA0.25g(0.25)g
IH-25d, e(5)d, e1d(1)d1d(1)d
IIH-350d, e(50)d, e50d(50)d10d(10)d
IIIH-3125d, e(125)d, e125d(125)d25d(25)d
IVNANLNLNLNLNLNL
VNANLNLNLNLNLNL
Oxidizer4H-11g(1)e, gNA0.25g(0.25)gNA0.25g(0.25)g
3kH-2 or H-310d, e(10)d, e2d(2)d2d(2)d
2H-3250d, e(250)d, e250d(250)d50d(50)d
1NA4,000e,f(4,000)e,f4,000f(4,000)f1,000f(1,000)f
Oxidizing gasGaseousH-3NANA1,500d, eNANA1,500d, eNANA
Liquefied(150)d, eNA(150)d, eNA
PyrophoricNAH-24e, g(4)e, g50e, g1g(1)g10e, g00
Unstable (reactive)4H-11e, g(1)e, g10e, g0.25g(0.25)g2e, g0.25g(0.25)g
3H-1 or H-25d, e(5)d, e50d, e1d(1)d10d, e1d(1)d
2H-350d, e(50)d, e750d, e50d(50)d750d, e10d(10)d
1NANLNLNLNLNLNLNLNL
Water reactive3H-25d,e(5)d, eNA5d(5)dNA1d(1)d
2H-350d, e(50)d, e50d(50)d10d(10)d
1NANLNLNLNLNLNL

For SI: 1 cubic foot = 0.02832 m3, 1 pound = 0.454 kg, 1 gallon = 3.785 L.

NA = Not Applicable, NL = Not Limited, UD = Unclassified Detonable.

  1. For use of control areas, see Section 5003.8.3.
  2. The aggregate quantity in use and storage shall not exceed the quantity listed for storage.
  3. The quantities of alcoholic beverages in retail and wholesale sales occupancies shall not be limited providing the liquids are packaged in individual containers not exceeding 1.3 gallons. In retail and wholesale sales occupancies, the quantities of medicines, foodstuff or consumer products and cosmetics containing not more than 50 percent by volume of water-miscible liquids with the remainder of the solutions not being flammable shall not be limited, provided that such materials are packaged in individual containers not exceeding 1.3 gallons.
  4. [SFM] In other than Group L occupancies, maximum allowable quantities shall be increased 100 percent in buildings equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1. Where Note e also applies, the increase for both notes shall be applied accumulatively.
  5. Maximum allowable quantities shall be increased 100 percent where stored in approved storage cabinets, day boxes, gas cabinets, gas rooms, exhausted enclosures or in listed safety cans in accordance with Section 5003.9.10. Where Note d also applies, the increase for both notes shall be applied accumulatively.
  6. Quantities shall not be limited in a building equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1.
  7. Allowed only in buildings equipped throughout with an approved automatic sprinkler system.
  8. Containing not more than the maximum allowable quantity per control area of Class IA, Class IB or Class IC flammable liquids.
  9. The maximum allowable quantity shall not apply to fuel oil storage complying with Section 603.3.2.
  10. Quantities in parenthesis indicate quantity units in parenthesis at the head of each column.
  11. A maximum quantity of 200 pounds of solid or 20 gallons of liquid Class 3 oxidizers is allowed where such materials are necessary for maintenance purposes, operation or sanitation of equipment where the storage containers and the manner of storage are approved.
  12. Net weight of pyrotechnic composition of the fireworks. Where the net weight of the pyrotechnic composition of the fireworks is not known, 25 percent of the gross weight of the fireworks including packaging shall be used.
  13. For gallons of liquids, divide the amount in pounds by 10 in accordance with Section 5003.1.2.
  14. For storage and display quantities in Group M and storage quantities in Group S occupancies complying with Section 5003.11, see Table 5003.11.1.
  15. Densely-packed baled cotton that complies with the packing requirements of ISO 8115 shall not be included in this material class.
  16. The following shall not be included in determining the maximum allowable quantities:

    1. Liquid or gaseous fuel in fuel tanks on vehicles.
    2. Liquid or gaseous fuel in fuel tanks on motorized equipment operated in accordance with this code.
    3. Gaseous fuels in piping systems and fixed appliances regulated by the California Mechanical Code.
    4. Liquid fuels in piping systems and fixed appliances, regulated by the California Mechanical Code.
    5. Alcohol-based hand rubs classified as Class I or II liquids in dispensers that are installed in accordance with Sections 5705.5 and 5705.5.1. The location of the alcohol-based hand rub (ABHR) dispensers shall be provided in the construction documents.
  17. Where manufactured, generated or used in such a manner that the concentration and conditions create a fire or explosion hazard based on information prepared in accordance with Section 104.7.2.

TABLE 5003.1.1(2)

MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA OF HAZARDOUS MATERIAL POSING A HEALTH HAZARDa, c, f, h, i

MATERIALSTORAGEbUSE-CLOSED SYSTEMSbUSE-OPEN SYSTEMSb
Solid poundsd, eLiquid gallons (pounds)d, eGas cubic feet at NTP (pounds)dSolid poundsdLiquid gallons (pounds)dGas cubic feet at NTP (pounds)dSolid poundsdLiquid gallons (pounds)d
Corrosives5,000500Gaseous 810e Liquefied (150)5,000500Gaseous 810e Liquefied (150)1,000100
Highly Toxics10(10)Gaseous 20g Liquefied (4)g10(10)Gaseous 20g Liquified (4)g3(3)
Toxics500(500)Gaseous 810e Liquefied (150)e500(500)Gaseous 810e Liquefied (150)e125(125)

For SI: 1 cubic foot = 0.02832 m3, 1 pound = 0.454 kg, 1 gallon = 3.785 L.

  1. For use of control areas, see Section 5003.8.3.
  2. The aggregate quantity in use and storage shall not exceed the quantity listed for storage.
  3. In retail and wholesale sales occupancies, the quantities of medicines, foodstuff or consumer products and cosmetics, containing not more than 50 percent by volume of water-miscible liquids and with the remainder of the solutions not being flammable, shall not be limited, provided that such materials are packaged in individual containers not exceeding 1.3 gallons.
  4. [SFM] In other than Group L occupancies, maximum allowable quantities shall be increased 100 percent in buildings equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1. Where Note e also applies, the increase for both notes shall be applied accumulatively.
  5. Maximum allowable quantities shall be increased 100 percent where stored in approved storage cabinets, gas cabinets or exhausted enclosures. Where Note d also applies, the increase for both notes shall be applied accumulatively.
  6. For storage and display quantities in Group M and storage quantities in Group S occupancies complying with Section 5003.11, see Table 5003.11.1.
  7. Allowed only where stored in approved exhausted gas cabinets or exhausted enclosures.
  8. Quantities in parentheses indicate quantity units in parentheses at the head of each column.
  9. For gallons of liquids, divide the amount in pounds by 10 in accordance with Section 5003.1.2.

TABLE 5003.1.1(3)

MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA OF HAZARDOUS MATERIALS POSING A PHYSICAL HAZARD IN AN OUTDOOR CONTROL AREAa, b, c, d

MATERIALCLASSSTORAGEbUSE-CLOSED SYSTEMSbUSE-OPEN SYSTEMSb
Solid pounds (cubic feet)Liquid gallons (pounds)dGas cubic feet at NTPSolid pounds (cubic feet)Liquid gallons (pounds)dGas cubic feet at NTPSolid pounds (cubic feet)Liquid gallons (pounds)d
Flammable gasGaseousNot ApplicableNot Applicable3,000Not ApplicableNot Applicable1,500Not ApplicableNot Applicable
Liquefied(300)Not Applicable(150)Not Applicable
Flammable solidNot Applicable500Not ApplicableNot Applicable250Not ApplicableNot Applicable50Not Applicable
Inert GasGaseousNot ApplicableNot ApplicableNot LimitedNot ApplicableNot ApplicableNot LimitedNot ApplicableNot Applicable
LiquefiedNot ApplicableNot ApplicableNot LimitedNot ApplicableNot ApplicableNot LimitedNot ApplicableNot Applicable
Cryogenic inertNot ApplicableNot ApplicableNot ApplicableNot LimitedNot ApplicableNot ApplicableNot LimitedNot ApplicableNot Applicable
Organic peroxideUnclassified Detonable1(1)Not Applicable0.25(0.25)Not Applicable0.25(0.25)
Organic peroxideI20(20)Not Applicable10(10)Not Applicable2(2)
II200(200)100(100)20(20)
III500(500)250(250)50(50)
IV1,000(1,000)500(500)100(100)
VNot LimitedNot LimitedNot LimitedNot LimitedNot LimitedNot Limited
Oxidizer42(2)Not Applicable1(1)Not Applicable0.25(0.25)
340(40)20(20)4(4)
21,000(1,000)500(500)100(100)
1Not LimitedNot LimitedNot LimitedNot LimitedNot LimitedNot Limited
Oxidizing gasGaseousNot ApplicableNot Applicable6,000Not ApplicableNot Applicable1,500Not ApplicableNot Applicable
Liquefied(600)Not Applicable(300)Not Applicable
Pyrophoric materialsNot Applicable8(8)1004(4)1000
Unstable (reactive)42(2)201(1)20.25(0.25)
320(20)20010(10)101(1)
2200(200)1,000100(100)25010(10)
1Not LimitedNot Limited1,500Not LimitedNot LimitedNot LimitedNot LimitedNot Limited
Water reactive320(20)Not Applicable10(10)Not Applicable1(1)
2200(200)100(100)10(10)
1Not LimitedNot LimitedNot LimitedNot LimitedNot LimitedNot Limited

For SI: 1 pound = 0.454 kg, 1 gallon = 3.785 L, 1 cubic foot = 0.02832 m3.

  1. For gallons of liquids, divide the amount in pounds by 10 in accordance with Section 5003.1.2.
  2. The aggregate quantities in storage and use shall not exceed the quantity listed for storage.
  3. The aggregate quantity of nonflammable solid and nonflammable or noncombustible liquid hazardous materials allowed in outdoor storage per single property under the same ownership or control used for retail or wholesale sales is allowed to exceed the maximum allowable quantity per control area where such storage is in accordance with Section 5003.11.
  4. Quantities in parentheses indicate quantity units in parentheses at the head of each column.

TABLE 5003.1.1(4)

MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA OF HAZARDOUS MATERIALS POSING A HEALTH HAZARD IN AN OUTDOOR CONTROL AREAa, b, c, f

MATERIALSTORAGEUSE-CLOSED SYSTEMSUSE-OPEN SYSTEMS
Solid poundsLiquid gallons (pounds)Gas cubic feet at NTP (pounds)Solid poundsLiquid gallons (pounds)Gas cubic feet at NTP (pounds)Solid poundsLiquid gallons (pounds)
Corrosives20,0002,000Gaseous 1,620 Liquefied (300)10,0001,000Gaseous 810 Liquefied (150)1,000100
Highly toxics20(20)Gaseous 40d Liquefied (8)d10(10)Gaseous 20d Liquefied (4)d3(3)
Toxics1,000(l,000)eGaseous 1,620 Liquefied (300)50050eGaseous 810 Liquefied (150)125(125)e

For SI: 1 cubic foot = 0.02832 m3, 1 pound = 0.454 kg, 1 gallon = 3.785 L, 1 pound per square inch absolute = 6.895 kPa,°C = [(°F)-32/1.8].

  1. For gallons of liquids, divide the amount in pounds by 10 in accordance with Section 5003.1.2.
  2. The aggregate quantities in storage and use shall not exceed the quantity listed for storage.
  3. The aggregate quantity of nonflammable solid and nonflammable or noncombustible liquid hazardous materials allowed in outdoor storage per single property under the same ownership or control used for retail or wholesale sales is allowed to exceed the maximum allowable quantity per control area where such storage is in accordance with Section 5003.11.
  4. Allowed only where used in approved exhausted gas cabinets, exhausted enclosures or under fume hoods.
  5. The maximum allowable quantity per control area for toxic liquids with vapor pressures in excess of 1 psia at 77°F shall be the maximum allowable quantity per control area listed for highly toxic liquids.
  6. Quantities in parentheses indicate quantity units in parentheses at the head of each column.
Where quantities are indicated in pounds and where the weight per gallon of the liquid is not provided to the fire code official, a conversion factor of 10 pounds per gallon (1.2 kg/L) shall be used.
The storage, use and handling of hazardous materials in quantities not exceeding the maximum allowable quantity per control area indicated in Tables 5003.1.1(1) through 5003.1.1(4) shall be in accordance with Sections 5001 and 5003.
The storage and use of hazardous materials in quantities exceeding the maximum allowable quantity per control area indicated in Tables 5003.1.1(1) through 5003.1.1(4) shall be in accordance with this chapter.
Systems, equipment and processes utilized for storage, dispensing, use or handling of hazardous materials shall be in accordance with Sections 5003.2.1 through 5003.2.8.
Containers, cylinders and tanks shall be designed and constructed in accordance with approved standards. Containers, cylinders, tanks and other means used for containment of hazardous materials shall be of an approved type. Pressure vessels not meeting DOTn requirements for transportation shall comply with the ASME Boiler and Pressure Vessel Code.
Piping, tubing, valves, and fittings conveying hazardous materials shall be designed and installed in accordance with ASME B31 or other approved standards, and shall be in accordance with Sections 5003.2.2.1 and 5003.2.2.2.

5003.2.2.1 Design and Construction

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

Piping, tubing, valves, fittings and related components used for hazardous materials shall be in accordance with the following:

  1. Piping, tubing, valves, fittings and related components shall be designed and fabricated from materials that are compatible with the material to be contained and shall be of adequate strength and durability to withstand the pressure, structural and seismic stress and exposure to which they are subject.
  2. Piping and tubing shall be identified in accordance with ASME A13.1 to indicate the material conveyed.
  3. Readily accessible manual valves or automatic remotely activated fail-safe emergency shutoff valves shall be installed on supply piping and tubing at the following locations:

    1. 3.1. The point of use.
    2. 3.2. The tank, cylinder or bulk source.
  4. Manual emergency shutoff valves and controls for remotely activated emergency shutoff valves shall be identified and the location shall be clearly visible, accessible and indicated by means of a sign.
  5. Backflow prevention or check valves shall be provided where the backflow of hazardous materials could create a hazardous condition or cause the unauthorized discharge of hazardous materials.
  6. Where gases or liquids having a hazard ranking of:

    • Health Class 3 or 4
    • Flammability Class 4
    • Instability Class 3 or 4

    in accordance with NFPA 704 are carried in pressurized piping above 15 pounds per square inch gauge (psig) (103 kPa), an approved means of leak detection and emergency shutoff or excess flow control shall be provided. Where the piping originates from within a hazardous material storage room or area, the excess flow control shall be located within the storage room or area. Where the piping originates from a bulk source, the excess flow control shall be located as close to the bulk source as practical.

  7. Gravity distribution systems are prohibited unless specifically approved by the Chief.
  8. When such lines lead into buildings, antisiphon valves shall be installed at the highest point in the supply line where it leaves the top of the tank. Approved substitute protection may be provided for highly volatile liquids.
  9. Where necessary for public safety, valves shall be provided to permit proper emergency control for piping systems at each independent element of use therein. The Chief may require piping systems to be equipped with block valves at such locations as may be deemed essential for public safety.

Exceptions:

  1. Piping for inlet connections designed to prevent backflow.
  2. Piping for pressure relief devices.

Supply piping and tubing for gases and liquids having a health-hazard ranking of 3 or 4 in accordance with NFPA 704 shall be in accordance with ASME B31.3 and the following:

  1. Piping and tubing utilized for the transmission of highly toxic, toxic or highly volatile corrosive liquids and gases shall have welded, threaded or flanged connections throughout except for connections located within a ventilated enclosure if the material is a gas, or an approved method of drainage or containment is provided for connections if the material is a liquid.
  2. Piping and tubing shall not be located within corridors, within any portion of a means of egress required to be enclosed in fire-resistance-rated construction or in concealed spaces in areas not classified as Group H occupancies.

Exception: Piping and tubing within the space defined by the walls of corridors and the floor or roof above or in concealed spaces above other occupancies where installed in accordance with Section 415.11.6.4 of the California Building Code for Group H-5 occupancies.

5003.2.2.3 Hazardous Materials Storage Tanks Inside Buildings

AMENDMENT
This section has been amended at the state or city level.
Tanks for the storage of hazardous materials in liquid form inside buildings shall be provided with any of the following:
  1. A normally closed remotely activated valve.
  2. An automatic-closing heat-activated valve.
  3. An approved device on each liquid transfer connection below the liquid level that shall provide a quick cut-off of flow in the event of fire.
Equipment, machinery and required detection and alarm systems associated with the use, storage or handling of hazardous materials shall be listed or approved.
Installation of tanks shall be in accordance with Sections 5003.2.4.1 through 5003.2.4.2.1.
Underground tanks used for the storage of liquid hazardous materials shall be provided with secondary containment. In lieu of providing secondary containment for an underground tank, an above-ground tank in an underground vault complying with Section 5704.2.8 shall be permitted.

5003.2.4.1.1 Secondary Containment

AMENDMENT
This section has been amended at the state or city level.
When there is a possibility of water intruding into the space between the primary tank and secondary containment by precipitation, infiltration, or other means, the facility shall be designed and constructed with the capability to monitor and remove such water intrusion. Secondary containment systems shall have a nationally recognized testing laboratory listing or a Los Angeles Fire Department Equipment Approval.

5003.2.4.1.2 Underground Piping

AMENDMENT
This section has been amended at the state or city level.
All underground piping in connection with underground tanks shall comply with the following:
  1. Piping shall lead out of the top.
  2. Piping shall be covered with at least 1 foot (305 mm) of earth or 4 inches (100 mm) of earth and 4 inches (100 mm) of concrete except for necessary riser pipes.
  3. Piping shall be equipped with means for disconnection.
  4. At any point of change from the vertical to the horizontal or from the horizontal to the vertical, there shall be installed an approved flex connector assembly.

5003.2.4.1.3 Fill Pipes

AMENDMENT
This section has been amended at the state or city level.
Fill pipes of underground tanks shall not exceed 8 inches (203 mm) inside diameter and shall be kept closed with a tight-fitting cap. Every fill opening shall be located in a fill box outside of buildings except openings for underground waste oil tanks used in connection with public garages or auto fueling stations inside buildings. Fill openings inside buildings shall be equipped in a manner to prevent escape of vapors to the inside of the buildings.

Above-ground stationary tanks used for the storage of hazardous materials shall be located and protected in accordance with the requirements for outdoor storage of the particular material involved.

Exception: Above-ground tanks that are installed in vaults complying with Section 5303.16 or 5704.2.8 shall not be required to comply with location and protection requirements for outdoor storage.

Above-ground stationary tanks shall be marked as required by Section 5003.5.

5003.2.4.2.2 Insulation

AMENDMENT
This section has been amended at the state or city level.
Atmospheric tanks containing hazardous materials may be insulated by the application of insulating material approved by the Chief. Insulating materials shall be fire resistant and shall not decompose rapidly if exposed to fire.

5003.2.4.3 Pressures Above Ambient

AMENDMENT
This section has been amended at the state or city level.
Tanks, pressure vessels, vaporizers and associated equipment used in conjunction with liquid or gaseous hazardous materials at ambient temperatures and pressures in excess of 0.5 psig shall be in accordance with Sections 5003.2.4.3.1 through 5003.2.4.3.6.

5003.2.4.3.1 Installation of Above-Ground Containers

AMENDMENT
This section has been amended at the state or city level.
Above-ground tanks and pressure vessels used to store liquid or gaseous hazardous materials at ambient temperatures and pressures in excess of 0.5 psig shall be in accordance with the following:
  1. Tanks and pressure vessels installed aboveground shall be provided with substantial masonry or noncombustible structural supports so installed as to prevent accidental movement.
  2. Horizontal, above-ground tanks and pressure vessels shall be mounted on saddles in such a manner as to permit expansion and contraction, not only of the container but also of the connected piping. Only two such saddles shall be used and every container shall be supported to prevent the concentration of excessive loads on the supporting portion of the shell.

5003.2.4.3.2 Installation of Underground Storage Containers

AMENDMENT
This section has been amended at the state or city level.
Underground tanks and pressure vessels used to store liquid or gaseous hazardous materials at ambient temperatures and pressures in excess of 0.5 psig shall be in accordance with Sections 5003.2.4.3.2.1 through 5003.2.4.3.2.8.

5003.2.4.3.2.1 Buried Containers

AMENDMENT
This section has been amended at the state or city level.
Storage containers or regulating equipment shall not be buried below ground unless written approval is first obtained from the Chief.

5003.2.4.3.2.2 Burial Depth

AMENDMENT
This section has been amended at the state or city level.
Every storage container installed underground shall be buried not less than 6 inches (150 mm) below the surface of the natural grade level except where the container might be subject to abrasive action or physical damage due to vehicular traffic or other causes in which case it shall be:

    Installed not less than 2 feet (610 mm) below the surface of the natural grade level; or otherwise protected against physical damage.

5003.2.4.3.2.3 Corrosion Resistance

AMENDMENT
This section has been amended at the state or city level.
The exterior surfaces of every such container shall be covered with an approved corrosion-resistant coating material applied in an approved manner.

5003.2.4.3.2.4 Installation

AMENDMENT
This section has been amended at the state or city level.
Every such vessel shall be set on a 6-inch (150 mm) thick bedding of water-washed sand (beach sand shall not be used) free from soil, rock, or gravel. Before any back filling is done, the position of the vessel and the sand bedding shall be approved by the Chief. After such approval, the excavation shall be back filled with the same quality water-washed sand in such a manner that the sand back fill on the sides, ends, and the top of such vessel shall be at least 6 inches (150 mm) thick.

5003.2.4.3.2.5 Piping Connections

AMENDMENT
This section has been amended at the state or city level.
Every opening for the attachment of piping and appurtenant equipment shall be in the top of such vessel. No pipe or equipment connection to any such vessel shall be buried underground, but shall be above ground, connected to a dome or manway which is an integral part of the vessel, or shall be in a valve pit constructed as provided in Section 5003.2.4.3.2.6.

5003.2.4.3.2.6 Pits

AMENDMENT
This section has been amended at the state or city level.
No pit shall be used or maintained in connection with any underground vessel which is greater than 2 feet (610 mm) in depth or contains in excess of 18 cubic feet (0.51 m3) of space.

5003.2.4.3.2.7 Collision Barriers

AMENDMENT
This section has been amended at the state or city level.
A collision barrier and a security fence, constructed as provided in Section 312, shall be installed and maintained to provide a minimum clearance of 5 feet (1525 mm) from the outer portion of every pit, vaporizer, pump, valve, or pipe riser.

5003.2.4.3.2.8 Inspection

AMENDMENT
This section has been amended at the state or city level.
All buried containers shall be completely uncovered for an inspection of all external surfaces at least once every 3 years. The intervals may be changed at the discretion of the Chief if a test plate is buried adjacent to the container and shows no appreciable corrosion on inspection by the Department after 3 years of service; provided, however, that every container shall be uncovered at least every 15 years. The test plates shall be of the same material as the shell of the tank and shall be at least one-fourth of the container diameter in length and 6 inches (150 mm) wide, and shall be buried in the water-washed sand at least as deep as the lowest surface of the container and shall not be coated. Test plates shall be provided in accordance with the following:
  1. Containers 10 feet (3050 mm) or less in length—one test plate.
  2. Containers more than 10 feet (3050 mm) but less than 20 feet (9096 mm) in length—two test plates, one on each side near opposite ends.
  3. Containers 20 feet (9096 mm) or more in length—one test plate for each 10 feet (3050 mm) of length, placed on alternate sides at 10-foot (3050 mm) intervals.

5003.2.4.3.3 Filling Terminals

AMENDMENT
This section has been amended at the state or city level.
The filling pipe inlet connections for tanks filled on consumer's premises shall not be located less than 15 feet (4572 mm) from any opening into or under a building where such opening is below the level of the filling connections; and in no case shall the filling pipe inlet connection be located less than 10 feet (3050 mm) from any building, street, or alley.

5003.2.4.3.4 Indirect Fired Vaporizers

AMENDMENT
This section has been amended at the state or city level.
Indirect fired vaporizers shall be equipped with the following safeguards:
  1. The device that supplies the necessary heat for producing steam, hot water, or other heating medium shall be separated from all rooms containing vaporizers, pumps, and central gas mixing devices by a vapor-tight 1-hour fire-resistive separation.
  2. Gas-fired heating systems supplying heat exclusively for vaporization purposes shall be equipped with automatic safety devices to shut off the flow of gas to main burners, if the pilot light should fail.
  3. A shut-off valve shall be installed on the liquid line to the vaporizer unit outside of any vaporizer room or building.

5003.2.4.3.5 Direct-Fired Vaporizers

AMENDMENT
This section has been amended at the state or city level.
Direct-fired vaporizers shall be equipped with the following safeguards:
  1. Every direct-fired vaporizer shall be marked with the name of the manufacturer, the rated BTU input to the burners, the area of the heat exchange surface of the vaporizer in square feet, the outside surface area in square feet, and the maximum vaporizing capacity in gallons per hour.
  2. Direct-fired vaporizers shall be separated from storage vessels, buildings, streets, and adjacent property lines that may be built upon in accordance with Table 5003.2.4.3.5.
  3. Every direct-fired vaporizer shall be located not less than 50 feet (15 240 mm) from filling connections.
  4. Direct fired vaporizers shall be provided with a means for shutting off the fuel to the main burner and pilot from outside the vaporizer housing.
TABLE 5003.2.4.3.5
REQUIRED SEPARATIONS FOR VAPORIZERS
VAPORIZING CAPACITY IN GALLONS PER HOUR BUILDINGS, STREETS, & ADJACENT PROPERTY LINES THAT MAY BE BUILT UPON (feet) STORAGE VESSELS (feet)
Less Than 25 25 5
25 — 100 40 5
More Than 100 50 5

5003.2.4.3.6 Operations of Process Vessels

AMENDMENT
This section has been amended at the state or city level.
Where the relief of excess pressure from process vessels might result in undue hazard to persons or property through excessive release of flammable or toxic materials, the Chief may require the operating pressure of process vessels to be a suitable margin below the design pressure. In determining the required margin, due consideration shall be given to the operating characteristics of the processes and of the facilities for relieving excess pressure. As an alternative thereto, the Chief may permit a system for safe disposal of materials vented from the facilities for relieving excess pressure.
Empty containers and tanks previously used for the storage of hazardous materials shall be free from residual material and vapor as defined by DOTn, the Resource Conservation and Recovery Act (RCRA) or other regulating authority or maintained as specified for the storage of hazardous material.
In addition to the requirements of Section 5003.2.3, equipment, machinery and required detection and alarm systems associated with hazardous materials shall be maintained in an operable condition. Defective containers, cylinders and tanks shall be removed from service, repaired or disposed of in an approved manner. Defective equipment or machinery shall be removed from service and repaired or replaced. Required detection and alarm systems shall be replaced or repaired where defective.
Stationary tanks not used for a period of 90 days shall be properly safeguarded or removed in an approved manner. Such tanks shall have the fill line, gauge opening and pump connection secured against tampering. Vent lines shall be properly maintained.
Tanks that are to be placed back in service shall be tested in an approved manner.
Defective containers and tanks shall be removed from service, repaired in accordance with approved standards or disposed of in an approved manner.

5003.2.6.3 Manifold Systems and Piping

AMENDMENT
This section has been amended at the state or city level.
Each manifold system and the piping connected to systems utilizing hazardous materials shall be inspected yearly by a qualified installer or representative of the gas supplier and certified free of defects. Such certification shall be in writing, and these records shall be open to examination by the Chief.
Atmospheric tanks having a capacity greater than 500 gallons (1893 L) and that contain hazardous material liquids shall be equipped with a liquid-level limit control or other approved means to prevent overfilling of the tank.
Machinery and equipment utilizing hazardous materials shall be braced and anchored in accordance with the seismic design requirements of the California Building Code for the seismic design category in which the machinery or equipment is classified.

The equipment, devices and systems listed in Section 5003.2.9.1 shall be tested at the time of installation and at one of the intervals listed in Section 5003.2.9.2. Records of the tests conducted or maintenance performed shall be maintained in accordance with the provisions of Section 107.2.1.

Exceptions:

  1. Periodic testing shall not be required where approved written documentation is provided stating that testing will damage the equipment, device or system and the equipment, device or system is maintained as specified by the manufacturer.
  2. Periodic testing shall not be required for equipment, devices and systems that fail in a fail-safe manner.
  3. Periodic testing shall not be required for equipment, devices and systems that self-diagnose and report trouble. Records of the self-diagnosis and trouble reporting shall be made available to the fire code official.
  4. Periodic testing shall not be required if system activation occurs during the required test cycle for the components activated during the test cycle.
  5. Approved maintenance in accordance with Section 5003.2.6 that is performed not less than annually or in accordance with an approved schedule shall be allowed to meet the testing requirements set forth in Sections 5003.2.9.1 and 5003.2.9.2.

The following equipment, systems and devices shall be tested in accordance with Sections 5003.2.9 and 5003.2.9.2.

  1. Gas detection systems, alarms and automatic emergency shutoff valves required by Section 6004.2.2.10 for highly toxic and toxic gases.
  2. Limit control systems for liquid level, temperature and pressure required by Sections 5003.2.7, 5004.8 and 5005.1.4.
  3. Emergency alarm systems and supervision required by Sections 5004.9 and 5005.4.4.
  4. Monitoring and supervisory systems required by Sections 5004.10 and 5005.1.6.
  5. Manually activated shutdown controls required by Section 6403.1.1.1 for compressed gas systems conveying pyrophoric gases.

The equipment, systems and devices listed in Section 5003.2.9.1 shall be tested at one of the frequencies listed below:

  1. Not less than annually.
  2. In accordance with the approved manufacturer's requirements.
  3. In accordance with approved recognized industry standards.
  4. In accordance with an approved schedule.

5003.2.10 Repair of Underground Tanks

AMENDMENT
This section has been amended at the state or city level.
Underground tanks may be repaired in a method approved by the Chief and in accordance with the following provisions:
  1. Before such repair, a soils investigation shall be conducted to determine if an unauthorized release has occurred.
  2. A permit shall be issued in accordance with Section 105.7 of this article.
  3. After such repair, the tank shall be tested in a method approved by the Chief.

Hazardous materials in any quantity shall not be released into a sewer, storm drain, ditch, drainage canal, creek, stream, river, lake or tidal waterway or on the ground, sidewalk, street, highway or into the atmosphere.

Exceptions:

  1. The release or emission of hazardous materials is allowed where in compliance with federal, state or local governmental agencies, regulations or permits.
  2. The release of pesticides is allowed where used in accordance with registered label directions.
  3. The release of fertilizer and soil amendments is allowed where used in accordance with manufacturer's specifications.
Where hazardous materials are released in quantities reportable under state, federal or local regulations, the fire code official shall be notified and the following procedures required in accordance with Sections 5003.3.1.1 through 5003.3.1.4.
Records of the unauthorized discharge of hazardous materials by the permittee shall be maintained.
Provisions shall be made for controlling and mitigating unauthorized discharges.
Where an unauthorized discharge caused by primary container failure is discovered, the involved primary container shall be repaired or removed from service.
The person, firm or corporation responsible for an unauthorized discharge shall institute and complete all actions necessary to remedy the effects of such unauthorized discharge, whether sudden or gradual, without cost to the jurisdiction. Where deemed necessary by the fire code official, cleanup can be initiated by the fire department or by an authorized individual or firm. Costs associated with such cleanup shall be borne by the owner, operator or other person responsible for the unauthorized discharge.

5003.3.1.5 Reporting

AMENDMENT
This section has been amended at the state or city level.
Any person who has knowledge of an unauthorized release of a hazardous substance shall notify the Chief immediately. A written report shall be submitted by the owner, operator, or permittee within 10 days after the escape of a hazardous substance from a primary container when the unauthorized release:
  1. Has occurred or has the potential to enter groundwater.
  2. Could endanger life, property, or the environment.
  3. Is contained by secondary containment.
    The written report shall provide information to the Department relating to the ability of the permittee to contain and dispose of the hazardous substance, the estimated time it will take to achieve this, and the degree of hazard created. The Chief may verify that the hazardous substance is being contained and appropriately disposed of. If at any time it is determined that the permittee is not adequately containing and disposing of such hazardous substance, the Chief shall have the power and authority to initiate and direct an emergency response in order to protect the public safety, health and welfare, public and private property, wildlife, marine fisheries, wet lands or ocean resources, or natural environment. The permittee shall be liable for reimbursement to the Department for all emergency response costs incurred.

Material Safety Data Sheets (MSDS) shall be readily available on the premises for hazardous materials regulated by this chapter. Where a hazardous substance is developed in a laboratory, available information shall be documented.

Exception: Designated hazardous waste.

Unless otherwise exempted by the fire code official, visible hazard identification signs as specified in NFPA 704 for the specific material contained shall be placed on stationary containers and above-ground tanks and at entrances to locations where hazardous materials are stored, dispensed, used or handled in quantities requiring a permit and at specific entrances and locations designated by the fire code official.
Individual containers, cartons or packages shall be conspicuously marked or labeled in an approved manner. Rooms or cabinets containing compressed gases shall be conspicuously labeled: COMPRESSED GAS.

5003.5.2 Additional Signage

AMENDMENT
This section has been amended at the state or city level.
In addition to the signage required in Section 5003.5, additional signage shall be provided in accordance with Sections 5003.5.2.1 through 5003.5.2.2.

5003.5.2.1 Warning Placards and Signs

AMENDMENT
This section has been amended at the state or city level.
Wherever corrosive materials are stored or processed, signs with letters not less than 3 inches (76 mm) high on contrasting background stating "WARNING—CORROSIVE MATERIALS" shall be posted at any location within a building and at any location within an area outside of a building where such materials are processed or stored, and at such other locations as may be required by the Chief.

5003.5.2.2 Warning Placards and Signs

AMENDMENT
This section has been amended at the state or city level.
Whenever hazardous materials (water-reactive materials, acidreactive materials, and air-reactive materials) are processed or stored signs with letters not less than 3 inches (76 mm) high on contrasting background stating, "WATER-REACTIVE MATERIAL," "ACID-REACTIVE MATERIAL," and/or "AIR-REACTIVE MATERIAL," appropriately identifying that type of hazard or hazards involved, shall be posted at any location inside a building and at any location within an area outside of a building where such materials are stored or processed, and at such other locations as may be required by the Chief.
Signs and markings required by Sections 5003.5 and 5003.5.1 shall not be obscured or removed, shall be in English as a primary language or in symbols allowed by this code, shall be durable, and the size, color and lettering shall be approved.
Sources of ignition shall comply with Sections 5003.7.1 through 5003.7.3.

Smoking shall be prohibited and "No Smoking" signs provided as follows:

  1. In rooms or areas where hazardous materials are stored or dispensed or used in open systems in amounts requiring a permit in accordance with Section 5001.5.
  2. Within 25 feet (7620 mm) of outdoor storage, dispensing or open use areas.
  3. Facilities or areas within facilities that have been designated as totally "no smoking" shall have "No Smoking" signs placed at all entrances to the facility or area. Designated areas within such facilities where smoking is permitted either permanently or temporarily, shall be identified with signs designating that smoking is permitted in these areas only.
  4. In rooms or areas where flammable or combustible hazardous materials are stored, dispensed or used.

Signs required by this section shall be in English as a primary language or in symbols allowed by this code and shall comply with Section 310.

Open flames and high-temperature devices shall not be used in a manner that creates a hazardous condition and shall be listed for use with the hazardous materials stored or used.
Powered industrial trucks used in areas designated as hazardous (classified) locations in accordance with the California Electrical Code shall be listed and labeled for use in the environment intended in accordance with NFPA 505.
Buildings, control areas, enclosures and cabinets for hazardous materials shall be in accordance with Sections 5003.8.1 through 5003.8.6.3.
Buildings, or portions thereof, in which hazardous materials are stored, handled or used shall be constructed in accordance with the California Building Code.

Group H occupancies containing quantities of hazardous materials in excess of those set forth in Table 5003.8.2 shall be in detached buildings.

TABLE 5003.8.2

DETACHED BUILDING REQUIRED

A DETACHED BUILDING IS REQUIRED WHERE THE QUANTITY OF MATERIAL EXCEEDS THAT LISTED HEREIN
MaterialClassSolids and liquids (tons)a, bGases (cubic feet)a, b
ExplosivesDivision 1.1Maximum Allowable QuantityNot Applicable
Division 1.2Maximum Allowable Quantity
Division 1.3Maximum Allowable Quantity
Division 1.4Maximum Allowable Quantity
Division 1.4c1
Division 1.5Maximum Allowable Quantity
Division 1.6Maximum Allowable Quantity
OxidizersClass 4Maximum Allowable QuantityMaximum Allowable Quantity
Unstable (reactives) detonableClass 3 or 4Maximum Allowable QuantityMaximum Allowable Quantity
Oxidizer, liquids and solidsClass 31,200Not Applicable
Class 22,000
Organic peroxidesDetonableMaximum Allowable QuantityNot Applicable
Class IMaximum Allowable Quantity
Class II25
Class III50
Unstable (reactives) nondetonableClass 312,000
Class 22510,000
Water reactivesClass 31Not Applicable
Class 225
Pyrophoric gasesNot ApplicableNot Applicable2,000

For SI: 1 pound = 0.454 kg, 1 cubic foot = 0.02832 m3, 1 ton = 2000 lbs. = 907.2 kg.

  1. For materials that are detonable, the distance to other buildings or lot lines shall be as specified in the California Building Code. For materials classified as explosives, the required separation distances shall be as specified in Chapter 56.
  2. "Maximum Allowable Quantity" means the maximum allowable quantity per control area set forth in Table 5003.1.1(1).
  3. Limited to Division 1.4 materials and articles, including articles packaged for shipment, that are not regulated as an explosive under Bureau of Alcohol, Tobacco, Firearms and Explosives regulations, or unpackaged articles used in process operations that do not propagate a detonation or deflagration between articles, providing the net explosive weight of individual articles does not exceed 1 pound.
Control areas shall comply with Sections 5003.8.3.1 through 5003.8.3.5.
Control areas shall be separated from each other by fire barriers constructed in accordance with Section 707 of the California Building Code or horizontal assemblies constructed in accordance with Section 711 of the California Building Code, or both.

The percentage of maximum allowable quantities of hazardous materials per control area allowed at each floor level within a building shall be in accordance with Table 5003.8.3.2.

TABLE 5003.8.3.2

DESIGN AND NUMBER OF CONTROL AREAS

FLOOR LEVELPERCENTAGE OF THE MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREAaNUMBER OF CONTROL AREAS PER FLOORFIRE-RESISTANCE RATING FOR FIRE BARRIERS IN HOURSb
Above grade planeHigher than 9512
7-9522
612.522
512.522
412.522
35021
27531
110041
Below grade plane17531
25021
Lower than 2Not AllowedNot AllowedNot Allowed
  1. Percentages shall be of the maximum allowable quantity per control area shown in Tables 5003.1.1(1) and 5003.1.1(2), with all increases allowed in the footnotes to those tables.
  2. Separation shall include fire barriers and horizontal assemblies as necessary to provide separation from other portions of the building.
The maximum number of control areas per floor within a building shall be in accordance with Table 5003.8.3.2.

The required fire-resistance rating for fire barriers shall be in accordance with Table 5003.8.3.2. The floor assembly of the control area and the construction supporting the floor of the control area shall have a fire-resistance rating of not less than 2 hours.

Exception: The floor assembly of the control area and the construction supporting the floor of the control area is allowed to be 1-hour fire-resistance rated in buildings of Type IIA, IIIA and VA construction, provided that both of the following conditions exist:

  1. The building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.
  2. The building is three stories or less above grade plane.
The aggregate quantity of nonflammable solid and nonflammable or noncombustible liquid hazardous materials allowed within a single control area of a Group M display and storage area or a Group S storage area is allowed to exceed the maximum allowable quantities per control area specified in Tables 5003.1.1(1) and 5003.1.1(2) without classifying the building or use as a Group H occupancy, provided that the materials are displayed and stored in accordance with Section 5003.11.
Where a gas room is used to increase the maximum allowable quantity per control area or provided to comply with the provisions of Chapter 60, the gas room shall be in accordance with Sections 5003.8.4.1 and 5003.8.4.2.
Gas rooms shall be protected with an automatic sprinkler system. Gas rooms shall be separated from the remainder of the building in accordance with the requirements of the California Building Code based on the occupancy group into which it has been classified.
The ventilation system for gas rooms shall be designed to operate at a negative pressure in relation to the surrounding area. Highly toxic and toxic gases shall also comply with Section 6004.2.2.6. The ventilation system shall be installed in accordance with the California Mechanical Code
Where an exhausted enclosure is used to increase maximum allowable quantity per control area or where the location of hazardous materials in exhausted enclosures is provided to comply with the provisions of Chapter 60, the exhausted enclosure shall be in accordance with Sections 5003.8.5.1 through 5003.8.5.3.
Exhausted enclosures shall be of noncombustible construction.
Exhausted enclosures shall be provided with an exhaust ventilation system. The ventilation system for exhausted enclosures shall be designed to operate at a negative pressure in relation to the surrounding area. Ventilation systems used for highly toxic and toxic gases shall also comply with Items 1, 2 and 3 of Section 6004.1.2. The ventilation system shall be installed in accordance with the California Mechanical Code.
Where a gas cabinet is used to increase the maximum allowable quantity per control area or where the location of compressed gases in gas cabinets is provided to comply with the provisions of Chapter 60, the gas cabinet shall be in accordance with Sections 5003.8.6.1 through 5003.8.6.3.

Gas cabinets shall be constructed in accordance with the following:

  1. Constructed of not less than 0.097-inch (2.5 mm) (No. 12 gage) steel.
  2. Be provided with self-closing limited access ports or noncombustible windows to give access to equipment controls.
  3. Be provided with self-closing doors.
  4. Gas cabinet interiors shall be treated, coated or constructed of materials that are compatible with the hazardous materials stored. Such treatment, coating or construction shall include the entire interior of the cabinet.
Gas cabinets shall be provided with an exhaust ventilation system. The ventilation system for gas cabinets shall be designed to operate at a negative pressure in relation to the surrounding area. Ventilation systems used for highly toxic and toxic gases shall also comply with Items 1, 2 and 3 of Section 6004.1.2. The ventilation system shall be installed in accordance with the California Mechanical Code.
The number of cylinders contained in a single gas cabinet shall not exceed three.
Where storage cabinets are used to increase maximum allowable quantity per control area or to comply with this chapter, such cabinets shall be in accordance with Sections 5003.8.7.1 and 5003.8.7.2.

The interior of cabinets shall be treated, coated or constructed of materials that are nonreactive with the hazardous material stored. Such treatment, coating or construction shall include the entire interior of the cabinet. Cabinets shall either be listed in accordance with UL 1275 as suitable for the intended storage or constructed in accordance with the following:

  1. Cabinets shall be of steel having a thickness of not less than 0.0478 inch (1.2 mm) (No. 18 gage). The cabinet, including the door, shall be double walled with a 11/2-inch (38 mm) airspace between the walls. Joints shall be riveted or welded and shall be tight fitting. Doors shall be well fitted, self-closing and equipped with a self-latching device.
  2. The bottoms of cabinets utilized for the storage of liquids shall be liquid tight to a minimum height of 2 inches (51 mm).

Electrical equipment and devices within cabinets used for the storage of hazardous gases or liquids shall be in accordance with the California Electrical Code.

Cabinets shall be clearly identified in an approved manner with red letters on a contrasting background to read:

HAZARDOUS—KEEP FIRE AWAY.

5003.9 General Safety Precautions

AMENDMENT
This section has been amended at the state or city level.
General precautions for the safe storage, handling or care of hazardous materials shall be in accordance with Sections 5003.9.1 through 5003.9.101.
Persons responsible for the operation of areas in which hazardous materials are stored, dispensed, handled or used shall be familiar with the chemical nature of the materials and the appropriate mitigating actions necessary in the event of fire, leak or spill.
Responsible persons shall be designated and trained to be liaison personnel to the fire department. These persons shall aid the fire department in preplanning emergency responses and identifying the locations where hazardous materials are located, and shall have access to Material Safety Data Sheets and be knowledgeable in the site's emergency response procedures.
Storage, dispensing, use and handling areas shall be secured against unauthorized entry and safeguarded in a manner approved by the fire code official.
Guard posts or other approved means shall be provided to protect storage tanks and connected piping, valves and fittings; dispensing areas; and use areas subject to vehicular damage in accordance with Section 312.
Electrical wiring and equipment shall be installed and maintained in accordance with the California Electrical Code.
Where processes or conditions exist where a flammable mixture could be ignited by static electricity, means shall be provided to prevent the accumulation of a static charge.
Materials that are sensitive to light shall be stored in containers designed to protect them from such exposure.
Materials that are shock sensitive shall be padded, suspended or otherwise protected against accidental dislodgement and dislodgement during seismic activity.

Incompatible materials in storage and storage of materials that are incompatible with materials in use shall be separated where the stored materials are in containers having a capacity of more than 5 pounds (2 kg) or 0.5 gallon (2 L). Separation shall be accomplished by:

  1. Segregating incompatible materials in storage by a distance of not less than 20 feet (6096 mm).
  2. Isolating incompatible materials in storage by a noncombustible partition extending not less than 18 inches (457 mm) above and to the sides of the stored material.
  3. Storing liquid and solid materials in hazardous material storage cabinets.
  4. Storing compressed gases in gas cabinets or exhausted enclosures in accordance with Sections 5003.8.5 and 5003.8.6. Materials that are incompatible shall not be stored within the same cabinet or exhausted enclosure.

Shelving shall be of substantial construction, and shall be braced and anchored in accordance with the seismic design requirements of the California Building Code for the seismic zone in which the material is located. Shelving shall be treated, coated or constructed of materials that are compatible with the hazardous materials stored. Shelves shall be provided with a lip or guard where used for the storage of individual containers.

Exceptions:

  1. Storage in hazardous material storage cabinets or laboratory furniture specifically designed for such use.
  2. Storage of hazardous materials in amounts not requiring a permit in accordance with Section 5001.5.

Shelf storage of hazardous materials shall be maintained in an orderly manner.

Safety cans shall be listed in accordance with UL 30 where used to increase the maximum allowable quantities per control area of flammable or combustible liquids in accordance with Table 5003.1.1(1). Safety cans listed in accordance with UL 1313 are allowed for flammable and combustible liquids where not used to increase the maximum allowable quantities per control area and for other hazardous material liquids in accordance with the listing.

5003.9.11 Handling

AMENDMENT
This section has been amended at the state or city level.
No person shall handle hazardous materials in a manner that will give rise to an unreasonable danger to life or property by reason of chemical action, fire or explosion.
In addition to the requirements of Section 5003.2, the handling and transportation of hazardous materials in corridors, elevators, or enclosures for stairways and ramps shall be in accordance with Sections 5003.10.1 through 5003.10.4.4.
Hazardous material gas containers, cylinders and tanks in transit shall have their protective caps in place. Containers, cylinders and tanks of highly toxic or toxic compressed gases shall have their valve outlets capped or plugged with an approved closure device in accordance with Chapter 53.

Liquids in containers exceeding 5 gallons (19 L) in a corridor or exit enclosure for a stairway or ramp shall be transported on a cart or truck. Containers of hazardous materials having a hazard ranking of 3 or 4 in accordance with NFPA 704 and transported within corridors or interior exit stairways and ramps, shall be on a cart or truck. Where carts and trucks are required for transporting hazardous materials, they shall be in accordance with Section 5003.10.3. Exceptions 1 through 4 shall not apply where elevators are utilized.

Exceptions:

  1. Two hazardous material liquid containers that are hand carried in acceptable safety carriers.
  2. Not more than four drums not exceeding 55 gallons (208 L) each that are transported by suitable drum trucks.
  3. Containers and cylinders of compressed gases that are transported by approved hand trucks, and containers and cylinders not exceeding 25 pounds (11 kg) that are hand carried.
  4. Solid hazardous materials not exceeding 100 pounds (45 kg) that are transported by approved hand trucks, and a single container not exceeding 50 pounds (23 kg) that is hand carried.

Above the 10th story of any occupancy, all vertical handling and transportation of hazardous materials in the building shall be in approved carts.

The handling and transportation of hazardous materials above the 10th story shall be limited to 5 percent of the maximum allowable quantities of Tables 5003.1(1) and (2). Quantities are permitted to be increased by 100 percent in buildings with an approved automatic sprinkler system in accordance with Section 903.3.1.1. Materials where footnote g applies shall not be increased.

Carts and trucks required by Section 5003.10.2 to be used to transport hazardous materials shall be in accordance with Sections 5003.10.3.1 through 5003.10.3.6.
Carts and trucks used to transport hazardous materials shall be designed to provide a stable base for the commodities to be transported and shall have a means of restraining containers to prevent accidental dislodgement. Compressed gas cylinders placed on carts and trucks shall be individually restrained.
Carts and trucks shall be provided with a device that will enable the operator to control safely movement by providing stops or speed-reduction devices.
Construction materials for hazardous material carts or trucks shall be compatible with the material transported. The cart or truck shall be of substantial construction.
Carts and trucks transporting liquids shall be capable of containing a spill from the largest single container transported.
Carts and trucks used to transport materials shall not obstruct or be left unattended within any part of a means of egress.
Incompatible materials shall not be transported on the same cart or truck.

When transporting hazardous materials, elevators shall have no other passengers other than the individual(s) handling the chemical transport cart.

Hazardous materials liquid containers shall have a maximum capacity of 20 liters (5.28 gal).

Toxic and highly-toxic gases shall be limited to a container of a maximum water capacity of 1 pound.

Means shall be provided to prevent the elevator from being summoned to other floors.

The aggregate quantity of nonflammable solid and nonflammable or noncombustible liquid hazardous materials stored and displayed within a single control area of a Group M occupancy, or an outdoor control area, or stored in a single control area of a Group S occupancy, is allowed to exceed the maximum allowable quantity per control area indicated in Section 5003.1 where in accordance with Sections 5003.11.1 through 5003.11.3.11.

The aggregate amount of nonflammable solid and nonflammable or noncombustible liquid hazardous materials stored and displayed within a single control area of a Group M occupancy or stored in a single control area of a Group S occupancy shall not exceed the amounts set forth in Table 5003.11.1.

TABLE 5003.11.1

MAXIMUM ALLOWABLE QUANTITY PER INDOOR AND OUTDOOR CONTROL AREA IN GROUP M AND S OCCUPANCIES—NONFLAMMABLE SOLIDS, NONFLAMMABLE AND NONCOMBUSTIBLE LIQUIDSd, e, f

CONDITIONMAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA
MaterialaClassSolids poundsLiquids gallons
A. HEALTH-HAZARD MATERIALS—NONFLAMMABLE AND NONCOMBUSTIBLE SOLIDS AND LIQUIDS
1. Corrosivesb, cNot Applicable9,750975
2. Highly ToxicsNot Applicable20b, c2b, c
3. Toxicsb, cNot Applicable1,000100
B. PHYSICAL-HAZARD MATERIALS—NONFLAMMABLE AND NONCOMBUSTIBLE SOLIDS AND LIQUIDS
1. Oxidizersb, c4Not AllowedNot Allowed
31,150g115
22,250h225
118,000i, j1,800i, j
2. Unstable (Reactives)b, c4Not AllowedNot Allowed
355055
21,150115
1Not LimitedNot Limited
3. Water Reactives3b, c55055
2b, c1,150115
1Not LimitedNot Limited

For SI: 1 pound = 0.454 kg, 1 gallon = 3.785 L, 1 cubic foot = 0.02832 m3.

  1. Hazard categories are as specified in Section 5001.2.2.
  2. Maximum allowable quantities shall be increased 100 percent in buildings equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1. Where Note c also applies, the increase for both notes shall be applied accumulatively.
  3. Maximum allowable quantities shall be increased 100 percent where stored in approved storage cabinets in accordance with Section 5003.8. Where Note b also applies, the increase for both notes shall be applied accumulatively.
  4. See Table 5003.8.3.2 for design and number of control areas.
  5. Maximum allowable quantities for other hazardous material categories shall be in accordance with Section 5003.1.
  6. Maximum allowable quantities shall be increased 100 percent in outdoor control areas.
  7. Maximum allowable quantities shall be increased to 2,250 pounds where individual packages are in the original sealed containers from the manufacturer or packager and do not exceed 10 pounds each.
  8. Maximum allowable quantities shall be increased to 4,500 pounds where individual packages are in the original sealed containers from the manufacturer or packager and do not exceed 10 pounds each.
  9. Quantities are unlimited where protected by an automatic sprinkler system.
  10. Quantities are unlimited in an outdoor control area.
The aggregate amount of nonflammable solid and nonflammable or noncombustible liquid hazardous materials stored and displayed within a single outdoor control area of a Group M occupancy shall not exceed the amounts set forth in Table 5003.11.1.
Storage and display shall be in accordance with Sections 5003.11.3.1 through 5003.11.3.11.
Storage and display of solids shall not exceed 200 pounds per square foot (976 kg/m2) of floor area actually occupied by solid merchandise. Storage and display of liquids shall not exceed 20 gallons per square foot (0.50 L/m2) of floor area actually occupied by liquid merchandise.
Display height shall not exceed 6 feet (1829 mm) above the finished floor in display areas of Group M occupancies. Storage height shall not exceed 8 feet (2438 mm) above the finished floor in storage areas of Group M and Group S occupancies.
Individual containers less than 5 gallons (19 L) or less than 25 pounds (11 kg) shall be stored or displayed on pallets, racks or shelves.
Racks and shelves used for storage or display shall be in accordance with Section 5003.9.9.
Containers shall be approved for the intended use and identified as to their content.
Individual containers shall not exceed 100 pounds (45 kg) for solids or 10 gallons (38 L) for liquids in storage and display areas.
Floors shall be in accordance with Section 5004.12.
Aisles 4 feet (1219 mm) in width shall be maintained on three sides of the storage or display area.
Hazard identification signs shall be provided in accordance with Section 5003.5.
A storage plan illustrating the intended storage arrangement, including the location and dimensions of aisles, and storage racks shall be provided.

Outdoor control areas for hazardous materials in amounts not exceeding the maximum allowable quantity per outdoor control area shall be in accordance with the following:

  1. Outdoor control areas shall be kept free from weeds, debris and common combustible materials not necessary to the storage. The area surrounding an outdoor control area shall be kept clear of such materials for not less than 15 feet (4572 mm).
  2. Outdoor control areas shall be located not closer than 20 feet (6096 mm) from a lot line that can be built upon, public street, public alley or public way.

    Exceptions:

    1. For solid and liquid hazardous materials, a 2-hour fire-resistance-rated wall without openings extending not less than 30 inches (762 mm) above and to the sides of the storage area shall be allowed in lieu of such distance.
    2. For compressed gas hazardous materials, unless otherwise specified, the minimum required distances shall not apply where fire barriers without openings or penetrations having a minimum fire-resistance rating of 2 hours interrupt the line of sight between the storage and the exposure. The configuration of the fire barrier shall be designed to allow natural ventilation to prevent the accumulation of hazardous gas concentrations.
  3. Where a property exceeds 10,000 square feet (929 m2), a group of two outdoor control areas is allowed where approved and where each control area is separated by a minimum distance of 50 feet (15 240 mm).
  4. Where a property exceeds 35,000 square feet (3252 m2), additional groups of outdoor control areas are allowed where approved and where each group is separated by a minimum distance of 300 feet (91 440 mm).

5003.13 Harbor Facilities

AMENDMENT
This section has been amended at the state or city level.
Hazardous materials falling within the scope of "Dangerous Cargo" as defined by Coast Guard regulations shall comply with Harbor and Fire Department regulations for their handling in the Los Angeles Harbor Area.

5003.14 Transferring by Pumps

AMENDMENT
This section has been amended at the state or city level.
The transferring of hazardous materials by pumps shall be in accordance with the following:
  1. The transfer of flammable or combustible liquids shall be through piping by means of approved pumps, inert gas, or water displacement. Except as required in process equipment, gravity flow shall not be used. The use of compressed air as a transferring medium shall be prohibited.
  2. Pumps shall be of a type approved for pressure, temperature, and compatibility of materials transferred.
  3. Positive displacement pumps shall be provided with pressure relief discharging back to the tank or to pump suction.
  4. Equipment shall be designed and arranged to prevent the unintentional escape of liquids and vapors and to minimize the quantity escaping in the event of an accidental release.
  5. Pumps shall be safely located and housed in the open or in fire resistive or noncombustible structures. Motors used to pump contents from tanks shall not be located beneath such tanks.

5003.15 Tank Vehicles

AMENDMENT
This section has been amended at the state or city level.
Tank vehicles shall be in accordance with Sections 5003.15.1 through 5003.15.2 when used for the transportation of any of the following hazardous materials:
  1. Liquefied flammable gasses.
  2. Flammable gasses.
  3. Gaseous toxic materials or gaseous oxidizing materials when transported at pressures in excess of 0.5 psig.
  4. Liquefied toxic materials or liquefied oxidizing materials having a vapor pressure in excess of 14.7 psig at a temperature of 100°F (38°C).

5003.15.1 Prohibited Locations

AMENDMENT
This section has been amended at the state or city level.
No tank vehicle shall be driven into, stored, or parked on any premises occupied by or used as an assembly, institutional, educational or residential occupancy, trailer camp, auto park or similar occupancy, except by special permit from the Chief pursuant to Section 105.8 of this article.

5003.15.2 Transfer Hoses

AMENDMENT
This section has been amended at the state or city level.
Transfer hoses shall be in accordance with the following:
  1. Transfer hoses or manifold outlets for hose connections used with cargo tanks shall not exceed two in number. The connection between the tank and the meter shall not be considered as one of these outlets. Transfer hoses shall not be longer than 100 feet (3048 mm)
  2. Each transfer hose shall be equipped with a shutoff valve at the discharge end. Hose used for the transfer of liquid shall be equipped with an approved safety relief valve.
  3. Bleeding of piping systems and transfer hoses in other than approved locations is prohibited.
Storage of hazardous materials in amounts exceeding the maximum allowable quantity per control area as set forth in Section 5003.1 shall be in accordance with Sections 5001, 5003 and 5004. Storage of hazardous materials in amounts not exceeding the maximum allowable quantity per control area as set forth in Section 5003.1 shall be in accordance with Sections 5001 and 5003. Retail and wholesale storage and display of nonflammable solid and nonflammable and noncombustible liquid hazardous materials in Group M occupancies and Group S storage shall be in accordance with Section 5003.11.

Rooms, buildings or areas used for the storage of liquid or solid hazardous materials shall be provided with spill control and secondary containment in accordance with Sections 5004.2.1 through 5004.2.3.

Exception: Outdoor storage of containers on approved containment pallets in accordance with Section 5004.2.3.

Rooms, buildings or areas used for the storage of hazardous material liquids in individual vessels having a capacity of more than 55 gallons (208 L), or in which the aggregate capacity of multiple vessels exceeds 1,000 gallons (3785 L), shall be provided with spill control to prevent the flow of liquids to adjoining areas. Floors in indoor locations and similar surfaces in outdoor locations shall be constructed to contain a spill from the largest single vessel by one of the following methods:

  1. Liquid-tight sloped or recessed floors in indoor locations or similar areas in outdoor locations.
  2. Liquid-tight floors in indoor locations or similar areas in outdoor locations provided with liquid-tight raised or recessed sills or dikes.
  3. Sumps and collection systems.
  4. Other approved engineered systems.

Except for surfacing, the floors, sills, dikes, sumps and collection systems shall be constructed of noncombustible material, and the liquid-tight seal shall be compatible with the material stored. Where liquid-tight sills or dikes are provided, they are not required at perimeter openings having an open-grate trench across the opening that connects to an approved collection system.

Where required by Table 5004.2.2 buildings, rooms or areas used for the storage of hazardous materials liquids or solids shall be provided with secondary containment in accordance with this section where the capacity of an individual vessel or the aggregate capacity of multiple vessels exceeds both of the following:

  1. Liquids: Capacity of an individual vessel exceeds 55 gallons (208 L) or the aggregate capacity of multiple vessels exceeds 1,000 gallons (3785 L).
  2. Solids: Capacity of an individual vessel exceeds 550 pounds (250 kg) or the aggregate capacity of multiple vessels exceeds 10,000 pounds (4540 kg).

TABLE 5004.2.2

REQUIRED SECONDARY CONTAINMENT—HAZARDOUS MATERIAL SOLIDS AND LIQUIDS STORAGE

MATERIALINDOOR STORAGEOUTDOOR STORAGE
SolidsLiquidsSolidsLiquids
1. Physical-hazard materials
Combustible liquidsClass IINot ApplicableSee Chapter 57Not ApplicableSee Chapter 57
Class IIIASee Chapter 57See Chapter 57
Class IIIBSee Chapter 57See Chapter 57
Cryogenic fluidsSee Chapter 55See Chapter 55
ExplosivesSee Chapter 56See Chapter 56
Flammable liquidsClass IANot ApplicableSee Chapter 57Not ApplicableSee Chapter 57
Class IBSee Chapter 57See Chapter 57
Class ICSee Chapter 57See Chapter 57
Flammable solidsNot RequiredNot ApplicableNot RequiredNot Applicable
Organic peroxidesUnclassified DetonableRequiredRequiredNot RequiredNot Required
Class I
Class II
Class III
Class IV
Class VNot RequiredNot RequiredNot RequiredNot Required
OxidizersClass 4RequiredRequiredNot RequiredNot Required
Class 3
Class 2
Class 1Not RequiredNot RequiredNot RequiredNot Required
PyrophoricsNot RequiredRequiredNot RequiredRequired
Unstable (reactives)Class 4RequiredRequiredRequiredRequired
Class 3
Class 2
Class 1Not RequiredNot RequiredNot RequiredNot Required
Water reactivesClass 3RequiredRequiredRequiredRequired
Class 2
Class 1Not RequiredNot RequiredNot RequiredNot Required
2. Health-hazard materials
CorrosivesNot RequiredRequiredNot RequiredRequired
Highly toxicsRequiredRequiredRequiredRequired
Toxics

The building, room or area shall contain or drain the hazardous materials and fire protection water through the use of one of the following methods:

  1. Liquid-tight sloped or recessed floors in indoor locations or similar areas in outdoor locations.
  2. Liquid-tight floors in indoor locations or similar areas in outdoor locations provided with liquid-tight raised or recessed sills or dikes.
  3. Sumps and collection systems.
  4. Drainage systems leading to an approved location.
  5. Other approved engineered systems.
Secondary containment for indoor storage areas shall be designed to contain a spill from the largest vessel plus the design flow volume of fire protection water calculated to discharge from the fire-extinguishing system over the minimum required system design area or area of the room or area in which the storage is located, whichever is smaller. The containment capacity shall be designed to contain the flow for a period of 20 minutes.
Secondary containment for outdoor storage areas shall be designed to contain a spill from the largest individual vessel. If the area is open to rainfall, secondary containment shall be designed to include the volume of a 24-hour rainfall as determined by a 25-year storm and provisions shall be made to drain accumulations of groundwater and rainwater.
An approved monitoring method shall be provided to detect hazardous materials in the secondary containment system. The monitoring method is allowed to be visual inspection of the primary or secondary containment, or other approved means. Where secondary containment is subject to the intrusion of water, a monitoring method for detecting water shall be provided. Where monitoring devices are provided, they shall be connected to approved visual or audible alarms.

Drainage systems shall be in accordance with the California Plumbing Code and all of the following:

  1. The slope of floors to drains in indoor locations, or similar areas in outdoor locations shall be not less than 1 percent.
  2. Drains from indoor storage areas shall be sized to carry the volume of the fire protection water as determined by the design density discharged from the automatic fire-extinguishing system over the minimum required system design area or area of the room or area in which the storage is located, whichever is smaller.
  3. Drains from outdoor storage areas shall be sized to carry the volume of the fire flow and the volume of a 24-hour rainfall as determined by a 25-year storm.
  4. Materials of construction for drainage systems shall be compatible with the materials stored.
  5. Incompatible materials used in open systems shall be separated from each other in the drainage system.
  6. Drains shall terminate in an approved location away from buildings, valves, means of egress, fire access roadways, adjoining property and storm drains.

Where used as an alternative to spill control and secondary containment for outdoor storage in accordance with the exception in Section 5004.2, containment pallets shall comply with all of the following:

  1. A liquid-tight sump accessible for visual inspection shall be provided.
  2. The sump shall be designed to contain not less than 66 gallons (250 L).
  3. Exposed surfaces shall be compatible with material stored.
  4. Containment pallets shall be protected to prevent collection of rainwater within the sump.

Indoor storage areas and storage buildings shall be provided with mechanical exhaust ventilation or natural ventilation where natural ventilation can be shown to be acceptable for the materials as stored.

Exception: Storage areas for flammable solids complying with Chapter 59.

Exhaust ventilation systems shall comply with all of the following:

  1. Installation shall be in accordance with the California Mechanical Code.
  2. Mechanical ventilation shall be at a rate of not less than 1 cubic foot per minute per square foot [0.00508 m3/(s • m2)] of floor area over the storage area.
  3. Systems shall operate continuously unless alternative designs are approved.
  4. A manual shutoff control shall be provided outside of the room in a position adjacent to the access door to the room or in an approved location. The switch shall be a break-glass or other approved type and shall be labeled: VENTILATION SYSTEM EMERGENCY SHUTOFF.

    Exception: [For SFM] When exhaust systems containing explosive, corrosive, combustible, flammable or highly toxic dusts, mists, fumes, vapors, or gases are 100 percent exhausted to the outside, an emergency ventilation system shutoff is not required.

  5. Exhaust ventilation shall be designed to consider the density of the potential fumes or vapors released. For fumes or vapors that are heavier than air, exhaust shall be taken from a point within 12 inches (305 mm) of the floor. For fumes or vapors that are lighter than air, exhaust shall be taken from a point within 12 inches (305 mm) of the highest point of the room.
  6. The location of both the exhaust and inlet air openings shall be designed to provide air movement across all portions of the floor or room to prevent the accumulation of vapors.
  7. Exhaust air shall not be recirculated to occupied areas if the materials stored are capable of emitting hazardous vapors and contaminants have not been removed. Air contaminated with explosive or flammable vapors, fumes or dusts; flammable, highly toxic or toxic gases; or radioactive materials shall not be recirculated.
Indoor storage areas and storage buildings shall be equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1. The design of the sprinkler system shall be not less than that required for Ordinary Hazard Group 2 with a minimum design area of 3,000 square feet (279 m2). Where the materials or storage arrangement are required by other regulations to be provided with a higher level of sprinkler system protection, the higher level of sprinkler system protection shall be provided.
Indoor storage rooms, areas and buildings shall be provided with explosion control in accordance with Section 911.

Where mechanical ventilation, treatment systems, temperature control, alarm, detection or other electrically operated systems are required, such systems shall be provided with an emergency or standby power in accordance with Section 604.

For storage areas for highly toxic or toxic materials, see Sections 6004.2.2.8 and 6004.3.4.2.

Standby or emergency power is not required for mechanical ventilation systems for any of the following:

  1. Storage of Class IB and Class IC flammable and combustible liquids in closed containers not exceeding 61/2 gallons (25 L) capacity.
  2. Storage of Class 1 and 2 oxidizers.
  3. Storage of Class II, III, IV and V organic peroxides.
  4. Storage of asphyxiant, irritant and radioactive gases.
Standby power for mechanical ventilation, treatment systems and temperature control systems shall not be required where an approved fail-safe engineered system is installed..
Limit controls shall be provided in accordance with Sections 5004.8.1 and 5004.8.2.
Materials that must be kept at temperatures other than normal ambient temperatures to prevent a hazardous reaction shall be provided with an approved means to maintain the temperature within a safe range. Redundant temperature control equipment that will operate on failure of the primary temperature control system shall be provided. Where approved, alternative means that prevent a hazardous reaction are allowed.
Stationary tanks and equipment containing hazardous material liquids that can generate pressures exceeding design limits because of exposure fires or internal reaction shall have some form of construction or other approved means that will relieve excessive internal pressure. The means of pressure relief shall vent to an approved location or to an exhaust scrubber or treatment system where required by Chapter 60.
An approved manual emergency alarm system shall be provided in buildings, rooms or areas used for storage of hazardous materials. Emergency alarm-initiating devices shall be installed outside of each interior exit or exit access door of storage buildings, rooms or areas. Activation of an emergency alarm-initiating device shall sound a local alarm to alert occupants of an emergency situation involving hazardous materials.
Emergency alarm, detection and automatic fire-extinguishing systems required by Section 5004 shall be electrically supervised and monitored by an approved supervising station or, where approved, shall initiate an audible and visual signal at a constantly attended on-site location.
The area surrounding an outdoor storage area or tank shall be kept clear of combustible materials and vegetation for a minimum distance of 25 feet (7620 mm).
Except for surfacing, floors of storage areas shall be of noncombustible construction.

Where overhead noncombustible construction is provided for sheltering outdoor hazardous material storage areas, such storage shall not be considered indoor storage where the area is constructed in accordance with the requirements for weather protection as required by the California Building Code

Exception: Storage of explosive materials shall be considered as indoor storage.

Use, dispensing and handling of hazardous materials in amounts exceeding the maximum allowable quantity per control area set forth in Section 5003.1 shall be in accordance with Sections 5001, 5003 and 5005. Use, dispensing and handling of hazardous materials in amounts not exceeding the maximum allowable quantity per control area set forth in Section 5003.1 shall be in accordance with Sections 5001 and 5003.
Except for surfacing, floors of areas where liquid or solid hazardous materials are dispensed or used in open systems shall be of noncombustible, liquid-tight construction.
Where required by other provisions of Section 5005, spill control and secondary containment shall be provided for hazardous material liquids in accordance with Section 5004.2.
Limit controls shall be provided in accordance with Sections 5005.1.4.1 through 5005.1.4.4.
Open tanks in which liquid hazardous materials are used shall be equipped with a liquid-level limit control or other means to prevent overfilling of the tank.
Approved safeguards shall be provided to prevent a low-liquid level in a tank from creating a hazardous condition, including but not limited to, overheating of a tank or its contents.
Temperature control shall be provided in accordance with Section 5004.8.1.
Pressure control shall be provided in accordance with Section 5004.8.2.
Where mechanical ventilation, treatment systems, temperature control, manual alarm, detection or other electrically operated systems are required by this code, such systems shall be provided with emergency or standby power in accordance with Section 604.
Standby power for mechanical ventilation, treatment systems and temperature control systems shall not be required where an approved fail-safe engineered system is installed.
Manual alarm, detection and automatic fire-extinguishing systems required by other provisions of Section 5005 shall be electrically supervised and monitored by an approved supervisory service or, where approved, shall initiate an audible and visual signal at a constantly attended on-site location.
Adequate lighting by natural or artificial means shall be provided.
Indoor rooms or areas in which hazardous materials are dispensed or used shall be protected by an automatic fire-extinguishing system in accordance with Chapter 9. Sprinkler system design shall be not less than that required for Ordinary Hazard, Group 2, with a minimum design area of 3,000 square feet (279 m2). Where the materials or storage arrangement are required by other regulations to be provided with a higher level of sprinkler system protection, the higher level of sprinkler system protection shall be provided.

Indoor dispensing and use areas shall be provided with exhaust ventilation in accordance with Section 5004.3.

Exception: Ventilation is not required for dispensing and use of flammable solids other than finely divided particles.

Liquids having a hazard ranking of 3 or 4 in accordance with NFPA 704 shall be transferred by one of the following methods:

  1. From safety cans complying with UL 30.
  2. Through an approved closed piping system.
  3. From containers or tanks by an approved pump taking suction through an opening in the top of the container or tank.
  4. From containers or tanks by gravity through an approved self-closing or automatic-closing valve where the container or tank and dispensing operations are provided with spill control and secondary containment in accordance with Section 5004.2. Highly toxic liquids shall not be dispensed by gravity from tanks.
  5. Approved engineered liquid transfer systems.

    Exceptions:

    1. Liquids having a hazard ranking of 4 where dispensed from approved containers not exceeding 1.3 gallons (5 L).
    2. Liquids having a hazard ranking of 3 where dispensed from approved containers not exceeding 5.3 gallons (20 L).
Systems shall be suitable for the use intended and shall be designed by persons competent in such design. Controls shall be designed to prevent materials from entering or leaving the process or reaction system at other than the intended time, rate or path. Where failure of an automatic control could result in a dangerous condition or reaction, the automatic control shall be fail-safe.

5005.1.12 Filling or Transferring Hazardous Materials in Portable Containers

AMENDMENT
This section has been amended at the state or city level.
The filling or transferring of liquid or gaseous hazardous materials stored at ambient temperatures and pressures in excess of 0.5 psig shall be in accordance with the following:
  1. No person shall fill any portable container with any material for which it was not designed, nor shall any person fill any portable container beyond its rated capacity, nor fill any unapproved portable container.
  2. The transferring or dispensing of liquid or gas into any portable container shall be performed only in a hazardous materials room, in occupancies approved for such use, or entirely outside of any building.
  3. The transferring or dispensing of materials from a tank truck to a portable container on any public street, sidewalk, alley or public way is prohibited.
  4. A qualified attendant or operator shall be in constant attendance at the transfer connections between a transportation tank truck, containing hazardous materials, and the portable vessels to be filled, from the time connections are made until connections are finally broken.
  5. The transferring or dispensing of materials from one portable container to another is prohibited.
Indoor dispensing and use of hazardous materials shall be in buildings complying with the California Building Code and in accordance with Section 5005.1 and Sections 5005.2.1 through 5005.2.2.4.
Dispensing and use of hazardous materials in open containers or systems shall be in accordance with Sections 5005.2.1.1 through 5005.2.1.4.

Where gases, liquids or solids having a hazard ranking of 3 or 4 in accordance with NFPA 704 are dispensed or used, mechanical exhaust ventilation shall be provided to capture gases, fumes, mists or vapors at the point of generation.

Exception: Gases, liquids or solids that can be demonstrated not to create harmful gases, fumes, mists or vapors.

Explosion control shall be provided in accordance with Section 5004.6 where an explosive environment can occur because of the characteristics or nature of the hazardous materials dispensed or used, or as a result of the dispensing or use process.
Buildings, rooms or areas where hazardous material liquids are dispensed into vessels exceeding a 1.3-gallon (5 L) capacity or used in open systems exceeding a 5.3-gallon (20 L) capacity shall be provided with spill control in accordance with Section 5004.2.1.

Where required by Table 5005.2.1.4, buildings, rooms or areas where hazardous material liquids are dispensed or used in open systems shall be provided with secondary containment in accordance with Section 5004.2.2 where the capacity of an individual vessel or system or the capacity of multiple vessels or systems exceeds the following:

  1. Individual vessel or system: greater than 1.3 gallons (5 L).
  2. Multiple vessels or systems: greater than 5.3 gallons (20 L).

TABLE 5005.2.1.4

REQUIRED SECONDARY CONTAINMENT—HAZARDOUS MATERIAL LIQUIDS USE

MATERIALINDOOR LIQUIDS USEOUTDOOR LIQUIDS USE
1. Physical-hazard materials
Combustible liquidsClass IISee Chapter 57See Chapter 57
Class IIIASee Chapter 57See Chapter 57
Class IIIBSee Chapter 57See Chapter 57
Cryogenic fluidsSee Chapter 55See Chapter 55
ExplosivesSee Chapter 56See Chapter 56
Flammable liquidsClass IASee Chapter 57See Chapter 57
Class IBSee Chapter 57See Chapter 57
Class ICSee Chapter 57See Chapter 57
Flammable solidsNot ApplicableNot Applicable
Organic peroxidesUnclassified DetonableRequiredRequired
Class IRequiredRequired
Class II
Class III
Class IV
Class VNot RequiredNot Required
OxidizersClass 4RequiredRequired
Class 3
Class 2
Class 1
PyrophoricsRequiredRequired
Unstable (reactives)Class 4RequiredRequired
Class 3
Class 2
Class 1Not RequiredRequired
Water reactivesClass 3RequiredRequired
Class 2
Class 1Not RequiredRequired
2. Health-hazard materials
CorrosivesRequiredRequired
Highly toxics
Toxics
Use of hazardous materials in closed containers or systems shall be in accordance with Sections 5005.2.2.1 through 5005.2.2.4.
Where closed systems are designed to be opened as part of normal operations, ventilation shall be provided in accordance with Section 5005.2.1.1.

Explosion control shall be provided in accordance with Section 5004.6 where an explosive environment exists because of the hazardous materials dispensed or used, or as a result of the dispensing or use process.

Exception: Where process vessels are designed to contain fully the worst-case explosion anticipated within the vessel under process conditions based on the most likely failure.

Buildings, rooms or areas where hazardous material liquids are used in individual vessels exceeding a 55-gallon (208 L) capacity shall be provided with spill control in accordance with Section 5004.2.1.

Where required by Table 5005.2.1.4, buildings, rooms or areas where hazardous material liquids are used in vessels or systems shall be provided with secondary containment in accordance with Section 5004.2.2 where the capacity of an individual vessel or system or the capacity of multiple vessels or systems exceeds the following:

  1. Individual vessel or system: greater than 55 gallons (208 L).
  2. Multiple vessels or systems: greater than 1,000 gallons (3785 L).
Dispensing and use of hazardous materials outdoors shall be in accordance with Sections 5005.3.1 through 5005.3.9.
Outdoor dispensing or use of hazardous materials, in either closed or open containers or systems, in amounts exceeding the maximum allowable quantity per control area indicated in Tables 5003.1.1(3) and 5003.1.1(4) shall be in accordance with Sections 5001, 5003, 5005.1 and 5005.3.
Outdoor dispensing or use of hazardous materials, in either closed or open containers or systems, in amounts not exceeding the maximum allowable quantity per control area indicated in Tables 5003.1.1(3) and 5003.1.1(4) shall be in accordance with Sections 5001 and 5003.
Outdoor dispensing and use areas for hazardous materials shall be located as required for outdoor storage in accordance with Section 5004.
Outdoor areas where hazardous material liquids are dispensed in vessels exceeding a 1.3-gallon (5 L) capacity or used in open systems exceeding a 5.3-gallon (20 L) capacity shall be provided with spill control in accordance with Section 5004.2.1.

Where required by Table 5005.2.1.4, outdoor areas where hazardous material liquids are dispensed or used in open systems shall be provided with secondary containment in accordance with Section 5004.2.2 where the capacity of an individual vessel or system or the capacity of multiple vessels or systems exceeds the following:

  1. Individual vessel or system: greater than 1.3 gallons (5 L).
  2. Multiple vessels or systems: greater than 5.3 gallons (20 L).
Outdoor areas where hazardous material liquids are used in closed systems exceeding 55 gallons (208 L) shall be provided with spill control in accordance with Section 5004.2.1.

Where required by Table 5005.2.1.4, outdoor areas where hazardous material liquids are dispensed or used in closed systems shall be provided with secondary containment in accordance with Section 5004.2.2 where the capacity of an individual vessel or system or the capacity of multiple vessels or systems exceeds the following:

  1. Individual vessel or system: greater than 55 gallons (208 L).
  2. Multiple vessels or systems: greater than 1,000 gallons (3785 L).
The area surrounding an outdoor dispensing or use area shall be kept clear of combustible materials and vegetation for a minimum distance of 30 feet (9144 mm).

Where overhead noncombustible construction is provided for sheltering outdoor hazardous material use areas, such use shall not be considered indoor use where the area is constructed in accordance with the requirements for weather protection as required in the California Building Code.

Exception: Use of explosive materials shall be considered as indoor use.

Handling of hazardous materials shall be in accordance with Sections 5005.4.1 through 5005.4.4.
Handling of hazardous materials in indoor and outdoor locations in amounts exceeding the maximum allowable quantity per control area indicated in Tables 5003.1.1(1) through 5003.1.1(4) shall be in accordance with Sections 5001, 5003, 5005.1 and 5005.4.
Handling of hazardous materials in indoor locations in amounts not exceeding the maximum allowable quantity per control area indicated in Tables 5003.1.1(1) and 5003.1.1(2) shall be in accordance with Sections 5001, 5003 and 5005.1. Handling of hazardous materials in outdoor locations in amounts not exceeding the maximum allowable quantity per control area indicated in Tables 5003.1.1(3) and 5003.1.1(4) shall be in accordance with Sections 5001 and 5003.
Outdoor handling areas for hazardous materials shall be located as required for outdoor storage in accordance with Section 5004.
Where hazardous materials having a hazard ranking of 3 or 4 in accordance with NFPA 704 are transported through corridors, interior exit stairways or ramps or exit passageways, there shall be an emergency telephone system, a local manual alarm station or an approved alarm-initiating device at not more than 150-foot (45 720 mm) intervals and at each exit and exit access doorway throughout the transport route. The signal shall be relayed to an approved central, proprietary or remote station service or constantly attended on-site location and shall also initiate a local audible alarm.
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