January 2011 Vol. 238 No. 1
Features
Pig Trap Design And Assessment Considerations
A pig trap must be designed to match the pipeline section design specifications. The mechanical design characteristics of the pig trap should meet or exceed the design pressure, have the same design factor, have compatible material type, be designed using the same design code and be suitable for the same temperature range as the pipeline section that it serves. Also, a pig trap must be dimensionally suited for the type of pigging that is expected on the pipeline section. The critical lengths of the barrels and line size pipe sections must be long enough to accommodate the longest pig that will be used in the pipeline section. When deciding where to locate a pig trap, there are
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