13 NCAC 13 .0420             FIRING MECHANISM CONTROLS

(a)  Automatically fired boilers and pressure vessels shall be provided with firing mechanism controls.

(b)  Oil, gas-fired, and electrically heated boilers shall be equipped with primary (flame safeguard) safety controls, safety limit switches, and burners or electric elements that are listed and labeled with a testing laboratory recognized by the Occupational Safety and Health Administration as a nationally recognized testing laboratory (NRTL) pursuant to 29 CFR 1910.7.

(c)  Automatically fired boilers installed after January 1, 2007, shall be provided with a remote emergency fuel shut-off switch marked for easy identification. The remote shut-off switch shall be located outside each door of the room in which the boiler is located. Alternatively, the shut-off switch may be located just inside the entrance door(s) where the equipment is located. If there is more than one door to the boiler room, there shall be a switch located at each door designed for primary emergency egress from the boiler room.

(d)  For installations which are gas-fired, the burners used shall conform to the North Carolina Fuel Gas Code in effect at the time of installation.


History Note:        Authority G.S. 95‑69.11; 95‑69.14;

Eff. January 1, 1995;

Amended Eff. February 1, 2009; July 1, 2006;

Pursuant to G.S. 150B-21.3A, rule is necessary without substantive public interest Eff. July 22, 2018.