When planning an isolation scope using a remote isolation plug it is important to consider both the pigging requirements and the isolation requirements.

This requires accounting for the pipeline features and geometry through which the isolation tool is required to travel to reach the set location, and accounting for the geometry and material strength at the set location

This assessment of the piggability and isolation functionality of the proposed tool is fundamental to a robust assurance process.

The requirement for leak testing following rectification or changeout work – and the requirement to use the isolation tool as the testing boundary – will have an impact on the tool selection and upfront engineering. Therefore, it is important to include this in the statement of requirements shared with prospective vendors.

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