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 66 — UNSTABLE (REACTIVE) MATERIALS
(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 X
Adopt Entire Chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
[California Code of Regulations, Title 19, Division 1]
Chapter / Section
*  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.

The storage and use of unstable (reactive) materials shall be in accordance with this chapter. Compressed gases shall also comply with Chapter 53.

Exceptions:

  1. Display and storage in Group M and storage in Group S occupancies complying with Section 5003.11.
  2. Detonable unstable (reactive) materials shall be stored in accordance with Chapter 56.
Permits shall be required as set forth in Section 105.6.

The following term is defined in Chapter 2:

UNSTABLE (REACTIVE) MATERIAL.

  • Class 4.
  • Class 3.
  • Class 2.
  • Class 1.
The storage and use of unstable (reactive) materials in amounts not exceeding the maximum allowable quantity per control area indicated in Section 5003.1 shall be in accordance with Sections 5001, 5003, 6601 and 6603.

In Group A, E, I or U occupancies, any amount of Class 3 and 4 unstable (reactive) materials shall be stored in accordance with the following:

  1. Class 3 and 4 unstable (reactive) materials shall be stored in hazardous material storage cabinets complying with Section 5003.8.7.
  2. The hazardous material storage cabinets shall not contain other storage.
Class 3 and 4 unstable (reactive) materials shall not be stored or used within Group R occupancies.
Class 4 unstable (reactive) materials shall not be stored or used in retail sales portions of Group M occupancies.
Class 3 and 4 unstable (reactive) materials shall not be stored or used in offices of Group B, F, M or S occupancies.

In classrooms in Group B, F or M occupancies, any amount of Class 3 and 4 unstable (reactive) materials shall be stored in accordance with the following:

  1. Class 3 and 4 unstable (reactive) materials shall be stored in hazardous material storage cabinets complying with Section 5003.8.7.
  2. The hazardous material storage cabinets shall not contain other storage.

6603.3 Stabilization

AMENDMENT
This section has been amended at the state or city level.
Unstable materials which require stabilization by the use of inhibitors shall not be stored, processed, or handled without such inhibitors, except that where a particular process required the use of an unstable material without such additives, the Chief may waive the above prohibition under specifically prescribed conditions.

6603.4 Inert Gas

AMENDMENT
This section has been amended at the state or city level.
Liquid unstable materials shall be blanketed with inert gas when subject to the conditions in Sections 6603.4.1 and 6603.4.2.

6603.4.1 Decomposition

AMENDMENT
This section has been amended at the state or city level.
Liquid unstable materials which are subject to violent or dangerous decomposition in the vapor phase shall be blanketed with an approved inert gas when stored in tanks or vessels, unless other approved control methods are provided.

6603.4.2 Polymerization

AMENDMENT
This section has been amended at the state or city level.
Liquid unstable materials which are subject to violent or dangerous polymerization in the vapor phase shall be blanketed with an approved inert gas when stored in tanks or vessels, unless other approved control methods are provided.

Indoor storage of unstable (reactive) materials in amounts exceeding the maximum allowable quantity per control area indicated in Table 5003.1.1(1) shall be in accordance with Sections 5001, 5003, 5004 and this chapter.

In addition, Class 3 and 4 unstable (reactive) detonable materials shall be stored in accordance with the California Building Code requirements for explosives.

Indoor storage rooms, areas and buildings containing Class 3 or 4 unstable (reactive) materials shall be provided with explosion control in accordance with Section 911.
In addition to Section 5004.12, floors of storage areas for liquids and solids shall be of liquid-tight construction.

Unstable (reactive) materials stored in quantities greater than 500 cubic feet (14 m3) shall be separated into piles, each not larger than 500 cubic feet (14 m3). Aisle width shall not be less than the height of the piles or 4 feet (1219 mm), whichever is greater.

Exception: Materials stored in tanks.

Outdoor storage of unstable (reactive) materials in amounts exceeding the maximum allowable quantities per control area indicated in Table 5003.1.1(3) shall be in accordance with Sections 5001, 5003, 5004 and this chapter.
Outdoor storage of Class 4 or 3 (detonable) unstable (reactive) material shall be in accordance with Table 5604.5.2(2). The number of pounds of material listed in the table shall be the net weight of the material present. Alternatively, the number of pounds of material shall be based on a trinitrotoluene (TNT) equivalent weight.
Outdoor storage of deflagratable Class 3 unstable (reactive) materials shall be in accordance with Table 5604.5.2(3). The number of pounds of material listed shall be the net weight of the material present.
Outdoor storage of Class 2 or 1 unstable (reactive) materials shall not be located within 20 feet (6096 mm) of buildings not associated with the manufacture or distribution of such materials, lot lines, public streets, public alleys, public ways or means of egress. The minimum required distance shall not apply when 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 fire barrier shall either be an independent structure or the exterior wall of the building adjacent to the storage area.
Piles of unstable (reactive) materials shall not exceed 1,000 cubic feet (28 m3).
Aisle widths between piles shall not be less than one-half the height of the pile or 10 feet (3048 mm), whichever is greater.
The use of unstable (reactive) materials in amounts exceeding the maximum allowable quantity per control area indicated in Table 5003.1.1(1) or 5003.1.1(3) shall be in accordance with Sections 5001, 5003, 5005 and this chapter.
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