N.Y.C. Admin. Code § FC 6304: Section FC 6304: Storage

6304.1 Indoor storage.

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

6304.1.1 Detached storage.

Storage of liquid and solid oxidizers shall be in a detached building when required by FC 5003.8.2.

6304.1.2 Distance from detached storage buildings to exposures.

In addition to the requirements of the construction codes, including the Building Code, detached storage buildings shall be located in accordance with FC Table 6304.1.2.

FC Table 6304.1.2 Oxidizer (Liquids and Solids) – Distance from Detached Storage Buildings and Outdoor Storage Areas to Exposures

Oxidizer Class

Weight (pounds)

Minimum Distance to Buildings, Lot Lines, Public Streets, Private Roads or Building Exits (feet)

1

Note a

Not Required

2

Note a

35

3

Note a

50

4

Up to 10

50

greater than 10 up to 100

75

greater than 100 up to 500

100

greater than 500 up to 1,000

125

greater than 1,000 up to 3,000

200

greater than 3,000 up to 5,000

300

greater than 5,000 up to 10,000

400

over 10,000

As required by the commissioner

For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.

a. Any quantity over the amount required for detached storage in accordance with FC 5003.8.2, or over the outdoor maximum allowable quantity for outdoor control areas.

6304.1.3 Explosion control.

Any room or other area in which Class 4 liquid or solid oxidizers are stored shall be provided with explosion control in accordance with FC 911 and the construction codes, including the Building Code.

6304.1.4 Sprinkler system.

Solid and liquid oxidizer storage areas shall be protected by a sprinkler system in accordance with NFPA 400.

6304.1.5 Liquid-tight floor.

In addition to FC 5004.12, floors of storage areas for liquid and solid oxidizers shall be of liquid-tight construction.

6304.1.6 Smoke detection.

An approved supervised smoke detection system in accordance with the construction codes, including the Building Code shall be installed in liquid and solid oxidizer storage areas. Such smoke detection system shall be monitored by an approved central station.

Exception: Detached storage buildings protected by a fire extinguishing system.

6304.1.6.1 Smoke and heat venting.

Smoke and heat venting shall be provided in accordance with FC 910 and the construction codes, including the Building Code.

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.

6304.2.2 Distance from storage to exposures for oxidizing gases.

Outdoor storage areas for oxidizing gases shall be located in accordance with FC Table 6304.2.2.

FC Table 6304.2.2 Oxidizing Gases – Distance from Storage to Exposures

a

Quantity of Gas Stored SCF

Distance to a Building Not Associated with the Manufacture or Distribution of Oxidizing Gases or Public Street, Private Road or Lot Line (feet)

Distance Between Storage Areas (feet)

greater than 3,000 up to 50,000

5

5

greater than 50,000 up to 100,000

10

10

greater than 100,000

15

15

For SI: 1 foot = 304.8 mm, 1 cubic foot = 0.02832 m

3

.

a. The distances do not apply when protective structures having a minimum fire-resistance rating of 2 hours interrupt the line of sight between the storage container and the exposure. The protective structure shall be at least 5 feet from the exposure. The configuration of the protective structure shall be designed to allow natural ventilation to prevent the accumulation of hazardous gas concentrations.

6304.2.2.1 Oxidizing cryogenic fluids.

Outdoor storage areas for oxidizing cryogenic fluids shall be located in accordance with FC Chapter 55.

6304.2.3 Storage configuration for liquid and solid oxidizers.

Storage configuration for liquid and solid oxidizers shall be in accordance with FC Tables 6304.1.7(1) through 6304.1.7(4).

6304.2.4 Storage configuration for oxidizing gases.

Storage configuration for oxidizing gases shall be in accordance with FC Table 6304.2.2.