The Challenge
Shutdown windows are short. Flanges with pitted, scored or corroded faces cannot be sealed again with a new gasket, and cutting them out for replacement adds welding, NDT and stress relief to the critical path.
Our Solution
Crews mount ID-clamping TFS-I610 and TFS-I1000 machines directly in the flange bore, re-cut the raised face with a spiral serrated finish and, where needed, recut RTJ grooves. Blind flanges and valve faces go to the OD-mounted TFP-O300, and small-bore flanges in confined spaces are dressed with the manual TFF-M355S.
Workflow
- Inspect and record face damage depth
- Mount and centre the machine in the bore; check run-out
- Skim to clean metal with the minimum stock removal
- Cut the specified serrated finish or RTJ groove
- Verify flatness and finish, then release for gasket fit
Result
Flanges go back into service with a new gasket instead of being replaced, keeping repair work off the shutdown critical path.
