34 Pa. Code § 43.53 - Decompression
(a) A stage
decompression shall be used in which a drop of 1/2 of the maximum gauge
pressure shall be at the rate of 5 pounds per minute. The remaining
decompression shall be at a uniform rate and the total time of decompression
shall equal the time specified for the original maximum pressure.
(b) No person employed in compressed air
shall be permitted to pass from the place in which the work is being done to
normal air, except after decompression in the intermediate lock as follows:
(1) If the air pressure is greater than
normal and less than 15 pounds per square inch, decompression shall be at the
maximum rate of 3 pounds per minute.
(2) If the air pressure is 15 pounds or more
and less than 20 pounds per square inch, decompression shall be at the maximum
rate of 2 pounds per minute.
(3) If
the air pressure is 20 pounds or more and less than 30 pounds per square inch,
decompression shall be at the maximum rate of 3 pounds every 2
minutes.
(4) If the air pressure is
30 pounds or more per square inch, decompression shall be at the maximum rate
of 1 pound per minute.
(c) The time of decompression shall be posted
in each man-lock as provided in §
43.54 (relating to pressure
gauges).
(d) If air pressure
reaches 17 pounds or more, a record of all men working in the air chamber shall
be kept by a man detailed for that purpose who shall remain outside the lock
near the entrance. This record shall show the period of stay in the air chamber
of each person and the time taken for decompression.
Notes
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