This DN-08e checklist supports field teams performing live gas service isolation. It covers pre-work safety and verification with a voltstick, confirming customer supply and isolating the ECV, exposing and cleaning the service pipe, selecting and fitting the correct clamp, and checking valve and seal condition. Steps include drill assembly checks, pressure testing to 30 mbar, inserting and testing the stopper with a let-by, troubleshooting leaks, and wearing insulated gloves during remote drilling. It also guides removal of the clamp, fitting a temporary continuity bond, cutting the service, leak response procedures, and sign-off for pass or further training.
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