ML17296A939

Final Deficiency Rept Re Borg-Warner Valve Stem Extension Loosening Problem.Mod to Correct Deficiency Will Be Completed Prior to Startup

ML17296A939
Person / Time
Site:	Palo Verde
Issue date:	07/29/1980
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17296A938	List: ML17296A939
References
ANPP-16035-JEC, NUDOCS 8009020532
Download: ML17296A939 (6)

Text

IPDMMEt P. O. BOX

~tel CIOKQIW12IW 2I666 'HOENIX'RIZONA 85036 July 29, 1980 ANPP-16035-JEC/BSK

.m/

j=i U. S. Nuclear Regulatory Commission Region V Walnut Creek Plaza Suite 202 c.P 1990 North California Boulevard Walnut Creek, California 9459'6 z (

~ =-'"

Attention: Hr. G. S. Spencer, Chief Reactor Construction and Engineering Support Branch

Subject:

A 50.55(e) Reportable Condition Relating to Borg-Warner Valves with Stem Extensions Which Could Loosen After a Few Cycles File: 90-019-026

Reference:

Telephone Conversation between J. Eckhardt and J. E. Cook on July 23, 1980 (DER 80-21)

Dear Sir:

Attached, is our final written report of the reportable deficiency, under 10CFR50.55(e), referenced above.

Very truly yours K.F. V~~I E. E. Van Brunt, Jr.

n~

APS Vice President Nuclear Projects ANPP Project Director EEVBJr/JEC:skc Attachment S0.09080 6 ~ ~

FD-4'7

l I

j

'I ij il

g. Regulatory uoeeissiou Attention: Hr. G. S. Spencer, Chief ANPP-16035-JEC/BSK July 29, 1980 Page 2 Cce Victor Stello, Jr., Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 A. C. Gehr Snell & Wilmer R. L. Robb D. B. Fasnacht W. E. Ide B. S. Kaplan A. C. Rogers J. H. Allen W. H. Wilson W. G. Bingham W. J. Stubblefield J. E. Bashore R. W. Welcher D. R. Hawkinson J. A. Brand

I FINAL REPORT REPORTABLE DEFICIENCY 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNITS 81, 'f/2 AND f/3 I Descri tion of Deficienc Borg-Warner, a subsupplier to Combustion Engineering for the NSSS, found, during a test of 1", 1<" and 3" valves, that the stem extension used for position indication could loosen after a few cycles. If the stem extension came off, it could prevent valve movement.

Bechtel has verified, by telecon with Borg-Warner, that a 10CFR Part 21 report has been filed with the NRC to cover the parts supplied to PVNGS as part of the Combustion Engineering NSSS contract.

II Anal sis of Safet Im lications This condition is considered reportable, since it acknow-ledges the deficiency described in the 10CFR Part 21 report filed by Borg-Warner.

III Corrective Action Bechtel has tagged the identified valves and initiated NCR-PX-1412 to cover the valve modification rework. Borg-Warner will supply Combustion Engineering with instructions and parts for the valves, in turn, Combustion Engineering will coordinate the modification implementation with Bechtel construction personnel at the jobsite. Completion of this modification prior to system turn-over for startup will be accomplished following established NCR procedures.

I

>f/

fl