November 2017, Vol. 244, No. 11
TechNotes
Inline Isolation Provides Decommissioning Benefits
When a multinational energy services company planned to decommission an onshore gas terminal in northwest England, it needed a fast, total solution that would avoid depressurizing and blowing down a 25-mile (40-km), 36-inch pipeline. The pipeline runs from an offshore field through north and south sub-terminals prior to feeding into the United Kingdom’s gas transmission network. A key concern was to complete the line decommissioning safely and quickly to minimize potential disruptions to the supply schedule. The solution was the proprietary SmartPlug® inline isolation tool from T.D. Williamson (TDW). The tool is a remotely controlled, piggable pipeline pressure isolation device that allows
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