Sentry quick open trap closures for the International pipeline industry, filter vessel manufacturers, separator fabricators, and field-built pig trap end fabricators for … Yes, the pipeline is 12 inches diameter and the pig trap minor and major barrel is 14 and 16 inches diameter respectively. Pig trap / scraper trap design. At the opposite end of the pipeline is a receiver device (or pig trap) which collects the pig before the debris is removed. For ease of operation, horizontal pig traps are preferred. In practice Recently, an oil & gas operator in Spain was facing a difficult decision in its ambition to inspect several pipelines through intelligent in-line pigging. Recently, an oil & gas operator in Spain was facing a difficult decision in its ambition to inspect several pipelines through intelligent in-line pigging. These operations include, but are not limited to cleaning and inspection of the pipeline.

Pigging a pipeline starts with a pig trap—a funnel-shaped Y-section in the pipeline that includes a launcher and a receiver. NB: Pigging must be done by competent or experienced pipeline pigging contractors or professionals to mitigate the inherent safety risks. The launcher and receiver are installed at the upstream and downstream of the pipeline section being pigged, respectively. SAFE PIGGING OPERATION By: Frank Gielissen, Netherlocks Safety Systems BV Safe operation on pig launchers/receivers The use of pig launcher and receiver stations for pipeline cleaning, inspecting and maintenance is a method seen world wide.

Without interrupting the flow, pig is inserted into the pipeline using the pig trap. Pig traps are considered fabricated piping assemblies and part of the pipeline. A pig trap must be designed to match the pipeline section design specifications. Certain valves, like the G4N gate valve of the GROVE valve portfolio and WKM Saf-T-Seal slab gate valve, are ideal for these pig traps because their smooth, through-conduit design does not obstruct the line bore. In practice. It will be inserted into the PIG trap at the start of the pipelines in Portovaya, Russia, and launched into the pipelines, where it will travel with the flow of gas all the way to Lubmin, Germany, where it will be received by a similar PIG trap. Hence the pig trap should be designed to the same code as the pipeline which is usually B31.8 or the equivilent in Australia. Pig trap is typically an over-sized section in the pipeline, reducing to the normal diameter, to accommodate the tight-fitting pig. During pigging pressure control is essential to avoid bodily injury. Pig traps can be of horizontal, vertical or inclined type.

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