Mich. Admin. Code R. 408.4206 - Age limit of standard existing boilers

Rule 206. The age limit of boilers of standard construction shall be dependent on a thorough internal and external inspection and hydrostatic pressure test of 1 1/2 times the allowable working pressure for a period of 30 minutes. If the boiler under these test conditions exhibits no distress or leakage, it may be continued in operation at the same working pressure.


Mich. Admin. Code R. 408.4206
1979 AC

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