Okla. Admin. Code § 380:25-5-5

Current through Vol. 42, No. 6, December 2, 2024

Section 380:25-5-5 - Age limit of existing boilers

(a) The age limit of any boiler of non-standard construction, installed prior to the date the Act became effective, shall be 30 years except that, after a thorough internal and external inspection, and when required by the Inspector, a hydrostatic pressure test of 1.5 times the allowable working pressure and held for a period of at least 30 minutes, during which no distress or leakage develops, having other than a lap-riveted longitudinal joint may be continued in operation at the working pressure determined by Section 380:25-5-7. The age limit of any non- standard boiler having lap-riveted longitudinal joints and operating at a pressure in excess of 50 psig shall be 20 years. This type of boiler, when removed from an existing setting, shall not be reinstalled for a pressure in excess of 15 psig. A reasonable time for replacement, not to exceed one year, may be granted by the Chief Boiler Inspector.

(b) The age limit of boilers of standard construction installed prior to the date this law became effective shall be dependent on thorough internal and external inspection and where required by the Inspector, a hydrostatic pressure test not exceeding 1.5 times the allowable working pressure. If the boiler, under these test conditions, exhibits no distress or leakage, it may be continued in operation at the working pressure determined by Section 380:25-5-6.

(c) The shell or drum of a boiler in which a lap seam crack develops along a longitudinal lap-rivet joint shall be condemned. A lap seam crack is a crack found in lap seams extending parallel to the longitudinal joint and located either between or adjacent to rivet holes.

Okla. Admin. Code § 380:25-5-5