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Chapter 58 — FLAMMABLE GASES AND FLAMMABLE CRYOGENIC FLUIDS

Section 5803 — GENERAL REQUIREMENTS

2025 California Fire Code (Title 24, Part 9) · 2025 edition · updated 2026-07-29 · California

Italicized text is a California amendment to the model code, as printed in the official publication.

5803.1 Quantities not exceeding the maximum allowable quantity per control area.

The storage and use of flammable gases in amounts not exceeding the maximum allowable quantity per control area indicated in Section 5003.1 shall be in accordance with Sections 5001, 5003, 5801 and 5803.

5803.1.1 Special limitations for indoor storage and use. Flammable gases shall not be stored or used in Group A, E, I or R occupancies or in offices in Group B occupancies.

Exceptions:

  1. Cylinders of nonliquefied compressed gases not exceeding a capacity of 250 cubic feet (7.08 m [3] ) or liquefied gases not exceeding a capacity of 40 pounds (18 kg) each at normal temperature and pressure (NTP) used for maintenance purposes, patient care or operation of equipment.
  2. Food service operations in accordance with Section 6103.2.1.7.
  3. Hydrogen gas systems located in a hydrogen fuel gas room constructed in accordance with Section 421 of the Califor- nia Building Code .

5803.1.1.1 Medical gases. Medical gas system supply cylinders shall be located in medical gas storage rooms or gas cabinets as set forth in Section 5306.

5803.1.1.2 Aggregate quantity. The aggregate quantities of flammable gases used for maintenance purposes and operation of equipment shall not exceed the maximum allowable quantity per control area indicated in Table 5003.1.1(1).

5803.1.2 Storage containers. Cylinders and pressure vessels for flammable gases shall be designed, constructed, installed, tested and maintained in accordance with Chapter 53.

on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

FLAMMABLE GASES AND FLAMMABLE CRYOGENIC FLUIDS

5803.1.3 Emergency shutoff. Compressed gas systems conveying flammable gases shall be provided with approved manual or automatic emergency shutoff valves that can be activated at each point of use and at each source.

5803.1.3.1 Shutoff at source. A manual or automatic fail-safe emergency shutoff valve shall be installed on supply piping at the cylinder or bulk source. Manual or automatic cylinder valves are allowed to be used as the required emergency shutoff valve where the source of supply is limited to unmanifolded cylinder sources.

5803.1.3.2 Shutoff at point of use. A manual or automatic emergency shutoff valve shall be installed on the supply piping at the point of use or at a point where the equipment using the gas is connected to the supply system.

5803.1.4 Ignition source control. Ignition sources in areas containing flammable gases in storage or in use shall be controlled in accordance with Section 5003.7.

Exception: Fuel gas systems connected to building service utilities in accordance with the International Fuel Gas Code .

5803.1.4.1 Static-producing equipment. Static-producing equipment located in flammable gas storage areas shall be grounded.

5803.1.4.2 Signs. “No Smoking” signs shall be posted at entrances to rooms and in areas containing flammable gases in accordance with Section 5003.7.1.

5803.1.5 Electrical. Electrical wiring and equipment shall be installed and maintained in accordance with Section 603 and the California Electrical Code.

5803.1.5.1 Bonding of electrically conductive materials and equipment. Exposed noncurrent-carrying metal parts, including metal gas piping systems, that are part of flammable gas supply systems located in a hazardous (electrically classified) location shall be bonded to a grounded conductor in accordance with the provisions of the California Electrical Code.

5803.1.5.2 Static-producing equipment. Static-producing equipment located in flammable gas storage or use areas shall be grounded.

5803.1.6 Liquefied flammable gases and flammable gases in solution. Containers of liquefied flammable gases and flammable gases in solution shall be positioned in the upright position or positioned so that the pressure relief valve is in direct contact with the vapor space of the container.

Exceptions:

  1. Containers of flammable gases in solution with a capacity of 1.3 gallons (5 L) or less.
  2. Containers of flammable liquefied gases, with a capacity not exceeding 1.3 gallons (5 L), designed to preclude the discharge of liquid from safety relief devices.

5803.2 Quantities exceeding the maximum allowable quantity per control area.

The storage and use of flammable gases in amounts exceeding the maximum allowable quantity per control area indicated in Section 5003.1 shall be in accordance with Chapter 50 and this chapter.

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▸ Contents — 2025 California Fire Code (Title 24, Part 9)
2025 California Fire Code (Title 24, Part 9)
  1. Chapter 1 — ADMINISTRATION
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — GENERAL REQUIREMENTS
  4. Chapter 4 — EMERGENCY PLANNING AND PREPAREDNESS
  5. Chapter 5 — FIRE SERVICE FEATURES
  6. Chapter 6 — BUILDING SERVICES AND SYSTEMS
  7. Chapter 7 — FIRE AND SMOKE PROTECTION FEATURES
  8. Chapter 8 — INTERIOR FINISH, DECORATIVE MATERIALS AND FURNISHI…
  9. Chapter 9 — FIRE PROTECTION AND LIFE SAFETY SYSTEMS
  10. Chapter 10 — MEANS OF EGRESS
  11. Chapter 11 — CONSTRUCTION REQUIREMENTS FOR EXISTING BUILDINGS
  12. Chapter 12 — ENERGY SYSTEMS
  13. Chapter 20 — AVIATION FACILITIES
  14. Chapter 21 — DRY CLEANING
  15. Chapter 22 — COMBUSTIBLE DUST-PRODUCING OPERATIONS
  16. Chapter 23 — MOTOR FUEL-DISPENSING FACILITIES AND REPAIR GARAGES
  17. Chapter 24 — FLAMMABLE FINISHES
  18. Chapter 25 — FRUIT AND CROP RIPENING
  19. Chapter 26 — FUMIGATION AND INSECTICIDAL FOGGING
  20. Chapter 27 — SEMICONDUCTOR FABRICATION FACILITIES
  21. Chapter 28 — LUMBER YARDS AND AGRO-INDUSTRIAL, SOLID BIOMASS A…
  22. Chapter 29 — MANUFACTURE OF ORGANIC COATINGS
  23. Chapter 30 — INDUSTRIAL OVENS
  24. Chapter 31 — TENTS, TEMPORARY SPECIAL EVENT STRUCTURES AND OTH…
  25. Chapter 32 — HIGH-PILED COMBUSTIBLE STORAGE
  26. Chapter 33 — FIRE SAFETY DURING CONSTRUCTION AND DEMOLITION
  27. Chapter 34 — TIRE REBUILDING AND TIRE STORAGE
  28. Chapter 35 — WELDING AND OTHER HOT WORK
  29. Chapter 36 — MARINAS
  30. Chapter 37 — COMBUSTIBLE FIBERS
  31. Chapter 38 — RESERVED
  32. Chapter 39 — PROCESSING AND EXTRACTION FACILITIES
  33. Chapter 40 — STORAGE OF DISTILLED SPIRITS AND WINES
  34. Chapter 41 — TEMPORARY HEATING AND COOKING OPERATIONS
  35. Chapter 48 — MOTION PICTURE AND TELEVISION PRODUCTION STUDIO S…
  36. Chapter 49 — REQUIREMENTS FOR WILDLAND-URBAN INTERFACE FIRE AR…
  37. Chapter 50 — HAZARDOUS MATERIALS—GENERAL PROVISIONS
  38. Chapter 51 — AEROSOLS
  39. Chapter 52 — RESERVED
  40. Chapter 53 — COMPRESSED GASES
  41. Chapter 54 — CORROSIVE MATERIALS
  42. Chapter 55 — CRYOGENIC FLUIDS
  43. Chapter 56 — EXPLOSIVES AND FIREWORKS
  44. Chapter 57 — FLAMMABLE AND COMBUSTIBLE LIQUIDS
  45. ▸ Chapter 58 — FLAMMABLE GASES AND FLAMMABLE CRYOGENIC FLUIDS
    Overview
    1. Section 5801 — GENERAL
    2. Section 5802 — DEFINITIONS
    3. Section 5803 — GENERAL REQUIREMENTS
    4. Section 5804 — STORAGE
    5. Section 5805 — USE
    6. Section 5806 — FLAMMABLE CRYOGENIC FLUIDS
    7. Section 5807 — METAL HYDRIDE STORAGE SYSTEMS
    8. Section 5808 — HYDROGEN FUEL GAS ROOMS
    9. Section 5809 — ON-DEMAND HYDROGEN MOBILE FUELING OPERATIONS
  46. Chapter 59 — FLAMMABLE SOLIDS
  47. Chapter 60 — HIGHLY TOXIC AND TOXIC MATERIALS
  48. Chapter 61 — LIQUEFIED PETROLEUM GASES
  49. Chapter 62 — ORGANIC PEROXIDES
  50. Chapter 63 — OXIDIZERS, OXIDIZING GASES AND OXIDIZING CRYOGENI…
  51. Chapter 64 — PYROPHORIC MATERIALS
  52. Chapter 65 — PYROXYLIN (CELLULOSE NITRATE) PLASTICS
  53. Chapter 66 — UNSTABLE (REACTIVE) MATERIALS
  54. Chapter 67 — WATER-REACTIVE SOLIDS AND LIQUIDS
  55. Chapter 80 — REFERENCED STANDARDS
  56. Appendix Chapter 4 — SPECIAL DETAILED REQUIREMENTS BASED ON US…
  57. Appendix A — BOARD OF APPEALS
  58. Appendix B — FIRE-FLOW REQUIREMENTS FOR BUILDINGS
  59. Appendix BB — FIRE-FLOW REQUIREMENTS FOR BUILDINGS
  60. Appendix C — FIRE HYDRANT LOCATIONS AND DISTRIBUTION
  61. Appendix CC — FIRE HYDRANT LOCATIONS AND DISTRIBUTION
  62. Appendix D — FIRE APPARATUS ACCESS ROADS
  63. Appendix E — HAZARD CATEGORIES
  64. Appendix F — HAZARD RANKING
  65. Appendix G — CRYOGENIC FLUIDS—WEIGHT AND VOLUME EQUIVALENTS
  66. Appendix H — HAZARDOUS MATERIALS MANAGEMENT PLANS AND HAZARDOU…
  67. Appendix I — FIRE PROTECTION SYSTEMS—NONCOMPLIANT CONDITIONS
  68. Appendix J — BUILDING INFORMATION SIGN
  69. Appendix K — CONSTRUCTION REQUIREMENTS FOR EXISTING AMBULATORY…
  70. Appendix L — REQUIREMENTS FOR FIREFIGHTER AIR REPLENISHMENT SY…
  71. Appendix M — HIGH-RISE BUILDINGS—RETROACTIVE AUTOMATIC SPRINKL…
  72. Appendix N — INDOOR TRADE SHOWS AND EXHIBITIONS
  73. Appendix O — VALET TRASH AND RECYCLING COLLECTION IN GROUP R-2…
  74. Appendix P — TEMPORARY HAUNTED HOUSES, GHOST WALKS AND SIMILAR…
  75. Appendix Q — COMMUNITY WILDLAND-URBAN INTERFACE (WUI) FIRE HAZ…

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