ML20108B519

Interim Deficiency Rept DER 84-73 Re Logarithmic Circuit Cards in Excore Sys.Initially Reported on 840925.Bechtel Studying Problem to Determine Reportability.Due to Extensive Investigation,Next Rept Will Be Submitted on 841115

ML20108B519
Person / Time
Site:	Palo Verde
Issue date:	10/25/1984
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
ANPP-30950-TDS, DER-84-73, NUDOCS 8411160090
Download: ML20108B519 (3)

Text

-

,x.

BECENED 110 0 Arizona Public Service Company

@ O,u 29 g g g

~

trgG!lV in

• October 25, 1984 ANPP-30950-TDS/TRB U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, California 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Reactor Safety and Projects

Subject:

Interim Report --DER 84-73 A 50.55(e) Potentially Reportable Deficiency Relating To Logarithmic Cicult Cards In The Excore System.

File: 84-019-026; D.4.33.2 1

Reference:

Telephone Conversation between C. Sorenson and T. Bradish on September 25, 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 November 15, 1984, at which time a complete report will be submitted.

Very truly yours, bW E. E. Van Brunt, Jr.

APS Vice President Nuclear Production ANPP Project Director EEVB/TRB/nj i

Attachment I

i l

cc See Page Two

~

l 1

8411160090 841025 i f I

PDR ADOCK 05000528 i

{

.1*E-A 7

p --

s v

Mr. T. W.~ Bishop DER 84-73 Page Two ec:

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. Ide 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 A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkinson R. P. Zimmerman L. Clyde M. Woods T. J. Bloom Records Canter Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339 i

l l

b i

l

I-INTERIM REPORT - DER 84-73

-POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT 1 I.

Potential Problem Excore Instrumentation logarithmic circuit cards failed to meet the acceptable criteria of Calibration Procedure 6276-1.

II.

Approach To and Status Of Proposed Resolution 1

3 Bechtel Engineering is currently studying this problem to determine reportability and technical justification for corrective action.

I III.

Projected Completion of Corrective Action and' Submittal of the Final Report 1

j The complete evaluation and final report are forecast to be completed by November 15, 1984 i

i l

i.

l l

I

.