... or single pressure barrier in the pipeline. The SmartPlug tool is a double block and monitor (DBM) pipeline isolation system. Broadly speaking, a barrier is deemed to be "double" when each plugging module is capable of retaining the full line pressure individually, is tested, and its integrity...

... taiwan plug module smartplug tool isolation tool Introduction China Petroleum Corporation (CPC) is the sole natural gas supplier to Taiwan. To stabilize the supply of gas to the domestic market, CPC has established an integrated, ring-shaped gas distribution network in the western part...