N.Y.C. Admin. Code § FC 6303: Section FC 6303: General Requirements

6303.1 Quantities not exceeding the maximum allowable quantity per control area.

The storage, handling and use of oxidizers in amounts not exceeding the maximum allowable quantity per control area indicated in FC 5003.1 shall be in accordance with FC 5001, 5003, 6301, 6303, and 6307 and with FC Chapters 53 and 55, as applicable.

6303.1.1 Prohibited indoor storage, handling and use by occupancy.

It shall be unlawful to store, handle or use:

1. Class 4 oxidizers in Group A, E, I, R or U occupancies.

2. Class 4 liquid and solid oxidizers in offices in Group B, F, M or S occupancies, and any areas of such occupancies that are accessible to the public.

3. Oxidizing gases in portable containers exceeding an individual capacity of 250 SCF (7 m

3

) for maintenance purposes, patient care or operation of equipment in Group A and E occupancies; Group B occupancy offices; and Group I and R occupancies, except as authorized by FC 6306.*

6303.1.2 Emergency shutoff.

Oxidizing gas piping systems shall be provided with approved manual or automatic emergency shutoff valves that can be activated at each point of use and each source.

6303.1.2.1 Shutoff at source.

A manual or automatic fail-safe emergency shutoff valve shall be installed on supply piping at the container or other source of supply. Manual or automatic valves on the containers supplying the oxidizing gas may serve as the emergency shutoff valve when the containers are the sole source of supply and are not manifolded.

6303.1.2.2 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.

6303.1.3 Ignition source control.

Ignition sources in areas containing oxidizing gases shall be controlled in accordance with FC 5003.7.

6303.2 Quantities exceeding the maximum allowable quantity per control area.

The storage, handling and use of oxidizers in amounts exceeding the maximum allowable quantity per control area indicated in FC 5003.1 shall be in accordance with FC Chapter 50 and this chapter.

6303.3 Multiple hazard sign.

Where more than one class of oxidizer is stored in immediate proximity to one another, such area shall be provided with hazard identification signs pursuant to FC Chapter 50 for the most severe class present.

6303.4 Multiple class storage.

Except as otherwise specifically provided in this code, where more than one class of oxidizer is stored in the same control area, the maximum quantity allowed of each oxidizer shall be limited as follows: the maximum quantity shall be reduced by multiplying the maximum allowable quantity for each such material by the proportional amount that such material bears to the total quantity of oxidizer stored in the control area. The total of the proportional amounts shall not exceed 100 percent.

6303.5 Filling of portable containers.

Portable containers of oxidizing gases shall be filled at a compressed gas dispensing facility, except that:

1. liquid oxygen home care containers alternatively may be filled outdoors from a cargo tank designed to supply such containers. When a liquid oxygen home care container is filled from a cargo tank on an asphalt or combustible surface, a drip pan compatible with liquid oxygen shall be provided under home care container fill and vent connections during the filling process to minimize the risk of ignition of the combustible surface; and

2. liquid oxygen ambulatory containers alternatively may be filled in the residence or residential health care setting from the liquid oxygen home care container designed for such purpose, in accordance with the manufacturer's instructions.

6303.5.1 Smoking prohibited.

Smoking shall be prohibited in rooms or areas where liquid oxygen containers are filled.