6304.1.7 Storage conditions.

The maximum quantity of oxidizers that may be stored in a detached storage building shall not exceed the quantities set forth in FC Tables 6304.1.7(1) through 6304.1.7(4).

FC Table 6304.1.7(1)
Storage Requirements for Class 1 Oxidizer (Liquids and Solids) in Combustible Containers a

 

Storage Configuration	Limits (feet)
Piles    Maximum length    Maximum width    Maximum height    Minimum distance to next pile    Minimum distance to walls	No Limit 50 20 3 2
Maximum quantity per pile	No Limit
Maximum quantity per building	No Limit

For SI: 1 foot = 304.8 mm.

a.   Storage in noncombustible containers or in bulk in detached storage buildings is not limited as to quantity or arrangement.

FC Table 6304.1.7(2)
Storage Requirements for Class 2 Oxidizer (Liquids and Solids) a, b

 

Storage Configuration	Limits
	Segregated storage	Cutoff storage rooms c	Detached building
Piles    Maximum width    Maximum height    Minimum distance to next pile    Minimum distance to walls	16 feet 10 feet Note d 2 feet	25 feet 12 feet Note d 2 feet	25 feet 12 feet Note d 2 feet
Maximum quantity per pile	20 tons	50 tons	200 tons
Maximum quantity per building	200 tons	500 tons	No Limit

For SI: 1 foot = 204.8 mm, 1 ton = 0.907185 metric ton.

a.   Storage in noncombustible containers is not limited as to quantity or arrangement, except that piles shall be at least 2 feet from walls in buildings protected throughout by a sprinkler system and 4 feet from walls in buildings not protected throughout by a sprinkler system; the distance between piles shall not be less than the pile height.

b.   Quantity limits shall be reduced by 50 percent in buildings or portions of buildings used for retail sales.

c.   Cutoff storage rooms shall be separated from the remainder of the building by 2-hour fire barriers.

d.   Aisle width shall not be less than the pile height.

FC Table 6304.1.7(3)
Storage Requirements for Class 3 Oxidizer (Liquids and Solids) a, b

 

Storage Configuration	Limits
	Segregated storage	Cutoff storage rooms c	Detached building
Piles    Maximum width    Maximum height    Minimum distance to next pile    Minimum distance to walls	12 feet 8 feet Note d 4 feet	16 feet 10 feet Note d 4 feet	20 feet 10 feet Note d 4 feet
Maximum quantity per pile	20 tons	30 tons	150 tons
Maximum quantity per building	100 tons	500 tons	No Limit

For SI: 1 foot = 204.8 mm, 1 ton = 0.907185 metric ton.

a.   Storage in noncombustible containers is not limited as to quantity or arrangement, except that piles shall be at least 2 feet from walls in sprinklered buildings and 4 feet from walls in nonsprinklered buildings; the distance between piles shall not be less than the pile height.

b.   Quantity limits shall be reduced by 50 percent in buildings or portions of buildings used for retail sales.

c.   Cutoff storage rooms shall be separated from the remainder of the building by 2-hour fire barriers.

d.   Aisle width shall not be less than the pile height.

FC Table 6304.1.7(4)
Storage Requirements for Class 4 Oxidizer (Liquids and Solids)

 

Storage Configuration	Limits (feet)
Piles    Maximum length    Maximum width    Maximum height    Minimum distance to next pile	10 4 8 8
Maximum quantity per building	No Limit

 

For SI: 1 foot = 304.8 mm.

6304.1.7.1 Liquid and solid oxidizers.

The storage configuration for liquid and solid oxidizers shall be as set forth in FC Tables 6304.1.7(1) through 6304.1.7(4).

6304.1.7.2 Class 2 oxidizers.

Class 2 oxidizers shall not be stored in basements, cellars or other areas below grade, except when such storage is in stationary tanks.

6304.1.7.3 Class 3 and 4 oxidizers.

Class 3 and 4 oxidizers in amounts exceeding the maximum allowable quantity per control area set forth in FC 5003.1 shall be stored on the ground floor only.

6304.1.8 Separation of Class 4 oxidizers from other materials.

In addition to the requirements in FC 5003.9.8, Class 4 oxidizer liquids and solids shall be separated from other hazardous materials by not less than a 1-hour fire barrier or stored in hazardous materials storage cabinets. Detached storage buildings for Class 4 oxidizer liquids and solids shall be located a minimum of 50 feet (15 240 mm) from other hazardous materials storage.

6304.1.9 Contamination.

Liquid and solid oxidizers shall not be stored on or against combustible surfaces. Liquid and solid oxidizers shall be stored in a manner to prevent contamination.

6304.2 Outdoor storage.

Outdoor storage of oxidizers in amounts exceeding the maximum allowable quantities per control area set forth in FC Table 5003.1.1(3) shall be in accordance with FC 5001, 5003, 5004 and this chapter.

6304.2.1 Distance from storage to exposures for liquid and solid oxidizers.

Outdoor storage areas for liquid and solid oxidizers shall be located in accordance with FC Table 6304.1.2.