ML20133E884

Interim Deficiency Rept CDR-85-00-13 Re Failure of Svc Water Sys Spool Linings,Piping Inserts & Valve Liner/Seats. Initially Reported on 850820.Investigation & Repairs Underway.Next Rept Expected by 860115

ML20133E884
Person / Time
Site:	Seabrook
Issue date:	09/18/1985
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
CDR-85--13, CDR-85-00-13, CRF-85--13, SBN-874, NUDOCS 8510100050
Download: ML20133E884 (3)

Text

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SEABROOK STATION Engineering Office Pub 5C SeMce of New Hampshko September 18, 1985 Now Hampshire Yankee Division SBN- 874 T.F. Q2.2.2 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 ,

Attention: Mr. Richard W. Starostecki, Director Division of Project and Resident Programs

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telcon of August 20, 1985, H. C. Shaffer and D. E. Groves (YAEC) to J. Rogers (NRC Region I)

Subject:

Interim 10CFR50.55(e) Report: Service Water System Spool Linings, Pipe Inserts and Valve Liner / Seats (CDR 85-00-13)

Dear Sir:

On August 20, 1985, we reported a potential 10CFR50.55(e) deficiency

[ Reference (b)], regarding the failure of Service Water System spool linings, piping inserts and valve liner / seats. This deficiency has been evaluated and has been determined reportable under the provisions of 10CFR50.55(e).

Description of Deficiency During startup testing of the Service Water System, it was discovered that:

o Some polyurethene linings in pipe spools downstream of throttling valves had become detached.

o Some valve liners and seats were found cracked or bubbled.

o Polyurethene insert from the flanged end of the cement-lined pipe, adjacent to a safety-related valve, detached and wrapped around the butterfly disc preventing the valve from closing.

8510100050 850918 PDR ADOCK 05000443 S PDR P.O. Box 300

• Seabrook.NH 03874 . Telephono (603)474 9521 10

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'*16 United States Nuclear Regulatory Commission September 18, 1985

~ Attention: Mr. Richard W. Starostecki Page 2 Safety Implications These deficiencies could cause the flow in either cooling train served by the cooling tower to become degraded and inhibit the function of the system.

Corrective Action An investigation of the failure has begun, and corrective actions have been reconnended. Materials have been selected which we believe are adequate to correct the problem. Repairs in representative locations have begun, and the results will be evaluated during subsequent system operations.

He will report further on this item by January - 15,1986.

Very truly yours, F-John DeVincentis, Director Engineering and Licensing cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement U.S.' Nuclear Regulatory Commission Washington, DC 20555

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' William S. Jordan, III Donald E. Chick Diane Curran Town Manager Harmon, Weiss & Jordan Town of Exeter 20001 S. Street, N.W. 10 Front Street Suite 430 Exeter, NH 03833 Washington, D.C. 20009 Brentwood Board of Selectmen Robert G. Perlis RED Dalton Road Office of the Executive Legal Director Brentwood, NH 03833 U.S. Nuclear Regulatory Commission Washington, DC 20555 Richard E. Sullivan, Mayor City Hall

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Senator Gordon J. Humphrey Diana P. Randall 1 Pillsbury Street 70 Collins Street Concord,. NH 03301 Seabroon, NH 03874 (ATTN: derb Boynton) i k