ML20062J663
| ML20062J663 | |
| Person / Time | |
|---|---|
| Site: | Washington Public Power Supply System |
| Issue date: | 07/27/1982 |
| From: | Mazur D WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, G1-82-459, GO-1-82-0459, GO-1-82-459, NUDOCS 8208160432 | |
| Download: ML20062J663 (3) | |
Text
IN Docket Nos. 50-460/513 pW 50.55(e) Report
~.5Q'O Washington Public Power Supply System' P.O. Box 968 3000 GeorgeWashingtonWay Richland, Washington 99352 (509)372-5000 m J!l g,ll o :-
July 27, 1982 "i
G01-82-0459 f;%,q Nuclear Regulatory Commission i
Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Attention:
Mr. T. W. Bishop Chief, Reactor Construction Projects Branch
Subject:
NUCLEAR PROJECTS 1 AND 4 REPORTABLE 10CFR50.55(e)
BUFFAL0 FORGE FAN HOUSING MISSILE PROTECTION
References:
1)
Telecon CR Edwards, Supply System to PP Narbut, Region V, Nuclear Regulatory Commission dated August 24, 1981 2)
BFUE-81-5017, dated June 11, 1981, JA Cownie to DW Mazur 3)
UEWP-81-736, dated August 28, 1981, HC Grau to GK Dyekman 4)
G0-181-321, dated September 25, 1981 DW Mazur to RB Faulkenberry 5)
G0-1-82-0020, dated January 18, 1982, DW Mazur to RB Faulkenberry 6)
G0-1-82-0151 dated April 21, 1982, RW Root to RB Faulkenberry In reference 1) the Supply System informed your office of a potentially reportable condition under 10CFR50.55(e).
In reference 2) the manufacturer of the subject fans, Buffalo Forge Company, identified to the Supply System a design deficiency associated with the missile protection character-istics of the fans supplied to WNP-1/4 under the guidelines of 10CFR21.
In references 4), 5) and 6) the Supply System provided your office with interim reports on the subject deficiency.
?
Attachment A to this letter, provides a restatement of the problem and an update on our planned corrective action. To date, we have not been able to establish a completion schedule for the work to be performed at the site. Due to the construction delay, we will defer our quarterly updates to a yearly basis or more frequently when new information becomes available.
820816G432 820727
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R. H. Faulkenberry July 27, 1982 Buffalo Forge Fan G01-82-0459' Page 2 If you have any question or desire further information, please advise.
~f D. W. Mazur Acting Program Director DWM:JMS:Im Attachment cc: CR Bryant, BPA (399)
JP Laspa, Bechtel (860)
V. Mani, UE&C (897)
A. Toth, NRC V. Stello, Director of Inspection, NRC FDCC (899) t k
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ATTACHMENT A WNP-1/4 DOCKET NOS. 50-460 AND 50-513 REPORTABLE CONDITION 10CFR50.55(e)
MISSILE PENETRATION FOR BUFFALO FORGE FANS BACKGROUND Buffalo Forge Company notified the Supply System on June 10, 1981 of a deficiency in the fan housing design in regard to missile penetration, in that it did not conform to the specification requirements. The manu-facturer, Buffalo Forge Company, has reported the design deficiency to the NRC under the guidelines of 10CFR Part 21.
DESCRIPTION OF DEFICIENCY The failure of the fan housing to stop missiles generated in the radial direction in the event of interior component failure, including wheel and motor, could damage safety related (SRA) equipment.
It has been determined that safety related equipment is located in and around the area where these fans are located. Rather than perform a failure analysis to determine what SRA equipment could be adversely affected by a fan failure it was decided to rework the fan housings to preclude any damage other than to the fan itself, this then renders the safety significance indeterminate.
STATUS OF CORRECTIVE ACTION The Buffalo Forge drawings showing the proposed corrective modifica-tions to fan housing have been reviewed by the respective A/E's and Supply System Engineering departments. These d;awings have been approved with minor correction comments.
Due to present slowdown of work at the Construction Site, a completion date for the actual work cannot be established. For this reason also, the Supply System will provide an interim report on a yearly basis or more frequently if new information becomes available.
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