Pig Launchers and Receivers are used in daily pipeline operations as well as construction.
Reasons for using pigs are:
Cleaning to increase pipeline efficiency
Pipeline inspection for cracks, ID
measurement, pitting and other corrosion
To separate products in the pipeline
De-watering of pipelines after hydrostatic testing
To launch and receive pigs or spheres special piping is required at the inlet and exit of
the pipeline to be pigged. A Launch/Receive system for pigs consists of the following components:
launch and receive piping/barrel; quick opening closure; valves; pressure gauges; bypass tees; skid
assembly with drip pan; handling equipment for pig.