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Cryogenic Fluids Permit

Permit Description

A permit is required to manufacture, store, handle or use, including dispensing, cryogenic fluids in quantities exceeding the following:

Type of Cryogenic FluidIndoors (gallons)Outdoors (gallons)
Flammable More than 1 10
Nonflammable 60 100
Oxidizing (includes oxygen) 10 50
Physical or health hazard not indicated above Any Quantity Any Quantity

For SI: 1 gallon = 3.785 L.

A permit is NOT REQUIRED for the:

1. Storage and use of cryogenic fluids in the fuel tank of a motor vehicle, aircraft, marine vessel or watercraft for motive power or for refrigerating the cargo.

2. Storage, handling or use of liquid oxygen home care containers and liquid oxygen ambulatory containers in compliance with the requirements of FC4006 in residential dwelling units and residential health care dwelling units and sleeping rooms in Group I-1, I-4 and R occupancies.

3. Handling and use of medical-grade liquid oxygen by trained and knowledgeable medical personnel engaged in providing licensed health care at patient locations citywide, outside of health care facilities, on a citywide response basis. This exception does not apply to any premises at which such liquid oxygen is being stored.

4. Handling of medical-grade liquid oxygen at any premises at which such oxygen is stored by trained and knowledgeable medical personnel for use in the provision of licensed health care at patient locations citywide, outside of health care facilities, on a citywide response basis, but which is not used at such premises. This exception includes making connections for purposes of ascertaining the contents of the container and attaching ancillary equipment, but does not include filling, refilling or hydrostatic testing of the container.

Cost of Permit
Store, Handle or Use Flammable $210.00
Store, Handle or Use Non-flammable - Up to and including 1,300 gallons (4921 L) $210.00
Up to and including 1,300 gallons (4921 L) $105.00

Permit Length

  • A FDNY inspector will visit the premise annually and perform an inspection prior to permit expiration

Application Requirements

  • Certificate of Fitness:
    G-79 Storage, Handling, and Use of Commercial Cryogenic Systems
    W-79 Delivery and Installation of Cryogenic Containers and/or Perform Maintenance and Minor Repairs on Cryogenic Containers
    G-71 Supervision of Piped Non-Flammable Medical Gases (for Medical Gases)

Additional Information

Get the Following Fire Code Chapters:

Need Help?

For assistance with applying for and receiving Permits and Letters of Approval on FDNY Business, contact the FDNY Customer Service Center by dialing 311, or via email at FDNY.BusinessSupport@FDNY.nyc.gov.

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