The maximum allowable working pressure on the shell of a nonstandard riveted heating boiler shall be determined in accordance with K.A.R. 49-51-3. The maximum working pressure of a steam heating boiler shall be 15 psig and the maximum working pressure or temperature of a hot water boiler shall be 160 psig or 250° F temperature.

(Authorized by and implementing K.S.A. 1985 Supp. 44-916 and K.S.A. 44-914; effective May 1, 1987.)