(a) All boilers shall be kept reasonably leveled and
must be provided with a substantial foundation such as steel, concrete,
brick, or stone.
(b) The boiler mud rim or bottom of a vertical boiler
setting shall not be less than 6 inches (152 mm) from the ground.
(c) The locomotive-type boiler mud rim or wet bottom
shall have the foundation of its setting not less than 12 inches (305
mm) from the floor or ground.
(d) All boiler mud rims shall be accessible to the
inspector.
(e) Boilers that are not leveled or do not have substantial
foundations shall be removed from service until these deficiencies
are corrected.
(f) Supports for boilers shall be masonry or structural
steel of sufficient strength and rigidity to safely support the boiler.
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