ML20116M480

Interim Deficiency Rept Re Blocked Air Hose in Vent Lines from safety-related Air Operated Actuators.Initially Reported on 850301.Air Hoses Will Be Replaced & Procedures Developed for Proper Hose Fabrication

ML20116M480
Person / Time
Site:	Seabrook
Issue date:	04/01/1985
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SBN-785, NUDOCS 8505060251
Download: ML20116M480 (3)

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SEABROOK STATION Engineering Office I

April 1, 1985 New Hampshire Yankee Division SBN- 785 T.F. Q2.2.2

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E2.3.1 H7.2.99 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 Re fe renc e s : (a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of March 1,1985, V. L. K111 pack, Jr. (YAEC) to J. Grant (NRC Region I)

Subject:

Interim 10CFR50.55(e) Report; Blocked Air llose in Vent Lines f rom Safety-Related Air-Operated Actuators

Dear Sir:

On March 1,1985, we reported a potential 10CFR50.55(e) item to Region I

[ Reference (b)] . The following information is provided under the interim reporting provision of 10CFR50.55(e)3:

Description of Deficiency Safety-related solenoid valves are used to vent air from safety-related devices, mainly air-operated valves, to position the device to perform a safety function. Some of these solenoid valves are not mounted on the safety-related device and are connected to the device by instrument tubing.

Flexible air hose is used in this connecting tubing to allow for movement of the various portions of the tubing caused by seismic or thermal expansion motion.

Improper site fabrication of the air hose resulted in a partial blockage of the hose by a portion of the lining that was scraped off by the hose fittings. Some lining pieces were hinged so that the blockage was only significant in one air flow direction.

This deficiency was identified during testing of air-operated valves when the valves did not move or moved slowly in one direction or the other, h

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P.O. Box 300 Seabrook,NHO3874 Telephone (603)474-%21

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,. .O United States Nuclear Regulatory Commission

-Attention: Mr. Richard W. Starostecki, Director Page 2

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Analysis of Safety Implications The ~ potentially defective air hoses were removed before the safety-related devices were tested, so we are unable to determine if the safety functions were ' defeated or if the only effect was a longer response time. The worst case possible would have been the failure of redundant

. containment isolation valves to close.

Corrective Action All installed air hoses will be removed and replaced with hoses that have been properly fabricated or with instrument tubing if the application does not require hose.

Procedures have been developed for proper hose fabrication. Personnel fabricating air hoses have been trained. The hose fabrication process is being covered by our QA program.

A final rep' ort will be submitted when all potentially deficient air hoses have been removed.

Very truly you s, John DeVincentis, Direc tor 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 v

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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 l City Hall Robert A. Backus, Esquire Newburyport, MA 01950 116 Lowell Street P.O. Box 516 Calvin A. Canney

( Manchester, NH 03105 City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Augusta, ME 04333 Dana Bisbee, Esquire Mr. John B. Tanzer Assistant Attorney General Designated Representative of Office of the Attorney General the Town of Hampton 208 State House Annex 5 Morningside Drive Concord, NH 03301 Hampton, NH 03842 Anne Verge, Chairperson Roberta C. Pevear Board of Selectmen Designated Representative of Town Hall the Town of Hampton Falls South Hampton, NH 03842 Drinkwater Road Hampton Falls, NH 03844 Patrick J. McKeon Selectmen's Office Mrs. Sandra Gavutis 10 Central Road Designated Representative of Rye, NH 03870 the Town of Kensington RFD 1 Carole F. Kagan, Esquire East Kingston, NH 03827 Atomic Safety and Licensing Board Panel U.S. Nuclear Regulatory Commission Jo Ann Shotwell, Esquire Washington, DC -20555 Assistant Attorney General Environmental Protection Bureau Mr. Angi Machiros j Department of the Attorney General Chairman of the Board of Selectmen One Ashburton Place, 19th Floor Town of Newbury ]

Boston, MA 02108 Newbury, MA 01950 l l

Senator Gordon J. Humphrey . Town Manager's Office U.S. Senate Town Hall - Friend Street Washington, DC 20510 Amesbury, MA 01913 (ATTN: Tom Burack)

Senator Gordon J. Humphrey Diana P. Randall 1 Pillsbury Street 70 Collins Street Concord, NH 03301 Seabrook, NH 03874 (ATTN: Herb Boynton)

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