ML20197K027
| ML20197K027 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 05/02/1986 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| REF-PT21-86, REF-PT21-86-185-000 ANPP-36467-EEVB, PT21-86-185, PT21-86-185-000, NUDOCS 8605200236 | |
| Download: ML20197K027 (3) | |
Text
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'Ep 6
Arizona Nuclear Power Project
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3, g P O. BOX 52034 e PHOENIX, ARIZONA 85072-2034 9
!!ay 2,1986 k:%,
5 ANPP-36467-EEVB/LAS /ERL-92'.'11 U. S. Nuclear Regulatory Commission Region V 1450 Peria Iane - Suite 210 Walnut Creek, CA 94596-5368 Attention:
fir. D. F. Kirsch, Acting Director Division of Reactor Safety and Projects Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2, 3 Docket No. 50/528, 529, 530
Subject:
Notification of 10CFR Part 21 A 10CFR Part 21 Condition Relating to B0P ESFAS Module Fin Connectors File 86-019-026; 86-056-026; D.4.33.2
Reference:
Telephone Conversation between R. C. Sorenson and D. R.
Iarkin on April 30,1986 (Initial Notification - 10CFR Part 21)
Dear Sir:
C' The NRC was notified of a deficiency in the referenced telephone conversation.
The attached report addresses the reporting requirements cf 10CFR 21.21(B)(3) with the exception of subpart (vi) regarding the number and location of such components supplied to other facilities.
Very truly yours,
[
CLLA A L L(.
E. E. Van Brunt, Jr.
Executive Vice President Project Director EEVB/ERL/kp Attachrent cc: See Page Two 0605200236 860502
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9 Mr. D. F. Kirsch Acting Director Page ' 2 cc:
J. M. Taylor, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 A. C. Gehr (4141)
R. P. Zimmerman (6295)
Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway - Suite 1500 Atlanta, Georgia 30339 3
e.
NOTIFICATION OF 10CFR PART 21 ARIZONA NUCLEAR POWER PROJECT FVNGS UNIT 1, 2, 3 I.
Condition Description While reworking a loose wire in BOP /ESFAS cabinet "A",
in Unit 2, the engineer and technician determined that the individual module
" multi-nate" pin connectors, manufactured by the AMP Corporation and supplied by Ceneral Atomic, may not meet the required contact length.
An investigation, conducted on April 29, 1986, determined that this was a common problem to both of the Unit 2 BOP /ESFAS cabinets.
Units 1 and 3 BOP /ESFAS cabinets also have similar pin connnectors.
The subject pin connectors number 9 per train and 18 per unit.
The part numbers are P/N 200276-2 and P/N 200277-2.
The configuration within the BOP /ESFAS cabinets has the potential for causing safety-related equipment dependent upon ESFAS actuation to fail to start. The postulated failure mechanism could result in both Diesel Generators being unavailable to supply power to essential safety functions.
II.
Approach To and Status of Proposed Resolution An engineering evaluation is presently underway to address this issue and incorporate it into DER 86-19, which deals with other concerns in the BOF/ESFAS cabinets.
The vendor has been informed of the present condition.
III. Projected Completion of Corrective Action And Submittal of the Final Report The complete evaluation and final report are forecast for May 23, 1986.
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