Mich. Admin. Code R. 339.5250 - Stripping of riveted boiler to determine required data
Rule 250. If a riveted boiler is jacketed so that the longitudinal seams of shells, drums, or domes cannot be seen, and if data cannot be determined by other means, enough of the jacketing, setting wall, or other form of casing or housing must be removed so that the size of the rivets, pitch of the rivets, and other data necessary to determine the safety of the boiler may be obtained.
Notes
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