49 CFR Appendix A to Part 180, Internal Self-closing Stop Valve Emergency Closure Test for Liquefied Compressed Gases

Appendix A to Part 180 - Internal Self-closing Stop Valve Emergency Closure Test for Liquefied Compressed Gases

1. In performing this test, all internal self-closing stop valves must be opened. Each emergency discharge control remote actuator (on-truck and off-truck) must be operated to ensure that each internal self-closing stop valve's lever, piston, or other valve indicator has moved to the closed position.

2. On pump-actuated pressure differential internal valves, the three-way toggle valve handle or its cable attachment must be activated to verify that the toggle handle moves to the closed position.

[ 64 FR 28052, May 24, 1999, as amended at 67 FR 15744, Apr. 3, 2002]

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