| (a) While in transit, fueling hose and flexible metal
hose on a cargo vehicle to be used in a transfer operation, including
their connections, shall be depressurized and protected from wear
and injury.
(b) Pressure relief devices shall be maintained in
proper operating condition.
(c) As a precaution to keep pressure relief devices
in reliable operating condition, care shall be taken in the handling
or storing of CNG cylinders to avoid damage. Care shall also be exercised
to avoid plugging by paint or other dirt accumulation of pressure
relief device channels or other parts which could interfere with the
functioning of the device.
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