The maximum allowable working pressure of a noncode steel or wrought iron heating boiler of welding construction may not exceed fifteen pounds [103 kilopascals]. For other than steam service, the maximum allowable working pressure must be calculated in accordance with section IV of the American Society of Mechanical Engineers Code.

History: Effective July 1, 2020. General Authority: NDCC 23.1-16-05 Law Implemented: NDCC 23.1-16-05