Effective January 1, 2020, gas piping systems in all buildings, except for buildings classified in occupancy group R-3, must be inspected by a Licensed Master Plumber (LMP), or a qualified individual working under the direct and continuing supervision of a LMP, at least once every four years according to the schedule set out in 1 RCNY §103-10.
Portable Combustible Gas Detection Devices A list of acceptable combustible gas indicator (CGI) devices approved by the New York State Department of Public Service to be used for inside leakage surveys in New York can be found here
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