34 Pa. Code § 9.80 - Forging and hot metal stamping
(a) All
hammers operated by steam, air, gravity or electricity shall be provided with
positive locking devices so that when the ram is at the top or the bottom of
its stroke, it cannot be accidentally moved.
(b) Every steam and air hammer shall be
provided with a stop valve in the admission pipe line, which shall be closed,
prior to, and during the repair of the hammer or while changing dies.
Notes
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