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  • ON-SITE MACHINING Maintenance and Repair of Flanges & Valves
  • ON-SITE MACHINING Maintenance and Repair of Flanges & Valves
  • Portable Machine Tools Surfacing - Boring - Threading - Counterboring - Tapping - Resurfacing - Grinding - Conical machining
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SERCO News 02/16/2017

Check-valve machining in a nuclear power plant

Repairing sealing surfaces and dowel pin guides on a check-valve flange and the piping flange, following a distortion problem due to over-tightening.
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Description: Repairing sealing surfaces and dowel pin guides on a check-valve flange and the piping flange, following a distortion problem due to over-tightening. Machining outage units O.D. 1150 mm (45.275”).

Tolerances to be maintained: 0.05 mm (.020”)

Machine: SERCO TU 1200 attached to a FC 1150

Result: Machining completed in compliance with tolerances.