ML20092G445

Interim Deficiency Rept DER 84-36 Re Safety Injection Valve Stalling Just Off Closing Seat When Opening or Closing. Initially Reported on 840517.Evaluation of Condition & Submittal of Final Rept Forecast to Be Completed by 840831

ML20092G445
Person / Time
Site:	Palo Verde
Issue date:	06/12/1984
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
ANPP-29731-TDS, DER-84-36, NUDOCS 8406250127
Download: ML20092G445 (3)

Text

)

~m Arizona Public Service Company r  ;- n. <

June 12, 1984 ~

2 #

ANPP- 29731-TDS/IRB U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 ,

Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs

Subject:

Interim Report - DER 84-36 A 50.55(e) Potentially Reportable Deficiency Relating To SI Valve Stalls Just Off Closing Seat When Opening Or Closing  ;

File: 84-019-026; D.4.33.2  ;

Reference:

Telephone Conversation between P. Narbut and T. Bradish on May 17, 1984

Dear Sir:

The NRC was notified of a potentially reportable deficiency in the referenced telephone conversation. At that time, it was estimated that a determination of reportability would be made within thirty (30) days.

Due to the extensive investigation and evaluation required, an Interim Report is attached. It is now expected that this information will be finalized by August 31, 1984, at which time a complete report will be submitted.

Very truly our f

COL 1 O E. E. Van Brunt, Jr.

APS Vice President Nuclear Production ANPP Project Director EEVB/TRB:db At tachment cc: . See Page 'No l

L 8406250127 840612 PDR ADOCK 05000529 S- PDR g l N w . -

ZP)7

l gs Mr. T. W. Bishop DER 84-36 Page Two cc: Richard DeYoung, Director Office of Inspection and Enforcement

'U. S. Nuclear Regulatory Commission Washington, D. C. 20555 T. G. Woods, Jr.

D. B. Karner W. E. Idc D. B. Fasnacht A. C. Rogers L. A. Souza D. E. Fowler T. D. Shriver C. N. Russo J. Vorees J. R. Bynum J. M. Allen J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiore111 S. R. Frost J. Self D. Canady Records Center Institute of Nuclear Power Operations

.1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339

r; .~. r INTERIM REPORT - DER 84-36 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT 2

1. Potential Problem (

. Valve 2JSIBUV636 stalls just off the closed seat position when opening or closing. Valve was disassembled and chatter marks were found along guide for the valve disk. Chatter marks may have been result of excessive clearance between disk and guide. This problem may.be related to the opening problem for other HPSI header valves as documented in DER 83-63.

~

Approach To and Status of Proposed Resolution Bechtel engineering is currently corresponding with Combustion Engineering on this problem to determine reportability and technical justification for corrective action.  ;

III. Projected Completion of Corrective Action and' Submittal of'the Final

• Report ,

Evaluation of this condition and submittal of the Final Report is Forecast to be completed by August 31, 1984. [

f b

F R

_ . . _ . ___ _ _.___ .._._ _ _ _._ .- .._.._ _ - ____.. _ _. ,. .,__ _ _,_ - __.. . - --__ _ _ _ _ _ !