Onshore Pig Trap Valve Replaced At Operating Pressure Using Tetherless Intelligent Pressure Isolation Plugs

摘要

An onshore pig trap valve has been efficiently and safely replaced at operating pressure using tetherless intelli-gent pressure isolation plugs instead of following tra-ditional maintenance procedures. Leaking pig trap valves present serious safety concern for pipeline operators who frequently use these systems to launch both standard and intelligent pigs. The potential for fire, pipeline content discharge or the overexposure of maintenance workers to pipeline contents demands the replacement of these valves to comply with industry safety standards. Traditional maintenance procedures often require a hole to be cut into the pipeline wall for stopple isolation installation, or the entire pipeline system to be depressurized and taken out of service to facilitate these changes, In comparison, the use of tetherless intelligent pressure isolation plugs (e.g. The PSI SmartPlug™) has been proven to be a cost-effective method of completing valve maintenance projects by minimizing pipeline downtime while not affecting pipeline integrity.