Seabrook Station service water piping refurbishment using the joint seal method
- North Atlantic Energy Service Corp., Seabrook, NH (United States)
The Seabrook Station service water system is fabricated from butt welded, cement lined, carbon steel piping. The service water system fluid is sea water from the Atlantic Ocean and/or potable water from a backup evaporative cooling tower. Joint compound was applied at field welds to seal cement liner crevices. Inspections of 24 inch (61 cm) above ground piping during a refueling outage revealed that the joint compound was degrading in a small percentage of the weld joints. At these locations, sea water was allowed to contact the piping substrate and initiate pitting corrosion. This paper discusses the refurbishment project conducted at Seabrook Station in which Miller Pipeline Corp. AMEX-10/WEKO Seals were installed in safety related service water piping at field weld joint cement liner crevices. This joint seal system utilizes an elastomer boot seal with 6% molybdenum stainless steel circumferential retaining bands on each side of the joint to secure the boot in place. This joint seal design provides a pressure tight seal in order to prevent further sea water intrusion into field weld joints due to degraded joint compound. Isolation of joints from the bulk oxygenated service water flow and high chlorides will arrest any current corrosion and prevent future degradation of these welded joints.
- OSTI ID:
- 455347
- Report Number(s):
- CONF-961006-; ISBN 0-7918-1789-9; TRN: 97:012062
- Resource Relation:
- Conference: 1996 international joint power generation conference, Houston, TX (United States), 13-17 Oct 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 1996 international joint power generation conference. Volume 3: Nuclear -- Trends in power production; Nuclear power plant operation; Nuclear fuel utilization, storage, and disposal; NE-Volume 20; Laudenat, R.T. [ed.]; PB: 76 p.
- Country of Publication:
- United States
- Language:
- English
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