13 NCAC 13 .0423 MODEL HOBBY BOILERS
In addition to the requirements outlined in this Chapter for manually fired boilers, model hobby boilers shall meet the following requirements:
(1) Each boiler shall have as a minimum:
(a) A properly operating pressure gauge that shall not be less than 1 ½ times nor more than four times the operating pressure of the boiler;
(b) Two safety relief valves each of which shall be capable of protecting the boiler from over pressurization. Requirements for ASME/NB certification are waived;
(c) An easily accessible mud-ring valve;
(d) A water gauge glass; and
(e) If constructed of copper, a fusible plug in the top of the crown sheet.
(2) Upon successful completion of the inspection and payment of the fees, the Chief Inspector shall issue a Certificate of Inspection valid for one year.
History Note: Authority G.S. 95‑69.11; 95‑69.14;
Eff. July 1, 2006.