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WELDING, CUTTING, AND BRAZING |
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Oxygen-Fuel Gas Welding and Cutting - Service Pipe Systems |
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Low points in piping carrying moist gas shall be
drained into drip pots constructed so as to permit pumping or draining out the condensate
at necessary intervals. Drain valves for this purpose shall have outlets closed with screw
caps or plugs. Piping from overhead lines shall have drip pots at each station. These drip pots either have a plug or petcock on the bottom. Underground installations have no draining system. Open end valves or petcocks shall be used. However, drip pots located out of doors, underground, and not readily accessible, may be controlled by valves if they are equipped with a means to secure them in the closed position. Pipes leading to the surface of the ground shall be cased or jacketed where necessary to prevent loosening or breaking. Pipes leading to the surface from underground lines have to be secured to prevent breaking or to avoid other damage to them. |
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