Mich. Admin. Code R. 339.5247 - Hydrostatic testing of traction boilers
Rule 247.
(1) A
traction boiler designed to pull farm equipment or to convert steam power into
flywheel energy driving farm apparatus, such as thrashers, saws, or grinding
equipment, is subject to both of the following provisions:
(a) It must be tested hydrostatically every 3
years to a hydrostatic pressure of 1-1/2 times working pressure and held for
sufficient time to permit visual observation of all seams, joints, supports,
and attachments.
(b) All seams,
attachments, supports, and joints must be exposed for each
inspection.
(2) Traction
boilers used for display or hobby purposes must not be operated for any other
purpose except for the purpose that they were originally constructed.
(3) Lap seam boilers must not be operated in
excess of 100 psi.
(4) Any repairs
by welding or riveting to traction boilers must be made by licensed repair
shops only after an approved permit has been obtained and subject to the
approval of the inspector before and after repair is made.
Notes
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