Permit Description

A permit is required to compress a flammable gas, including piped natural gas, to a pressure exceeding 6 psig (41.4 Kpa). 

Microturbine systems utilize natural gas at an inlet pressure to the system of not greater than 3 psig, and boost the gas pressure to an inlet pressure to the combustion device of greater than 15 psig within the unit or a room enclosure.

Cost of Permit


Permit Length

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

Application Requirements

  • NYC Department of Buildings approval of gas piping associated with the microturbine.
  • G-92 Certificate of Fitness for the Supervision of High-Pressure
    Natural Gas Fired Microturbine Systems
    (*For 24 hour operations, such as hotels, a minimum of three certificate of fitness holders are required)

Additional Information

Get the Following Fire Code Chapter:

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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