ML20055B735

Final Interim Deficiency Rept Re GE 10CFR21 Rept on Type Hma Auxiliary Relays Having Excess Uninsulated Flexible Leads Which Could Cause Short Circuits.Bechtel Will Perform Rework Per GE Recommendations

ML20055B735
Person / Time
Site:	Palo Verde
Issue date:	07/06/1982
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, 82-192, ANPP-21321-GHD, DER-81-57, NUDOCS 8207230219
Download: ML20055B735 (7)

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,, Docket Nos. 50-528/529/530 1g 50.55(e) Report j ADNJA IFUr=w@ GaET71rm carrgenssw STA. 3003 P.o. Box 21666 - PHOENIX, ARIZONA 85036 July 6, 1982 ANPP-21321-GHD/BSK U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane, Suite 210 4g Walnut Creek,-California 94596-5368 t///g C /(

Attention: Mr. T. W. Bishop, Chief Reactor Construction Projects Branch k

Subj ect: Final Report - DER 81-57 A 50.55(e) Reportable Condition Relating to G.E. 10CFR21 Report on Type HMA Auxiliary Relays Having Excess Uninsulated Flexible Leads Which Could Cause Short Circuits.

. File: 82-019-026 D.4.33.2

Reference:

(1) Telephone Conversation between Bob Dodd's and George Duckworth on January 5, 1982 (2) ANPP-20078, dat'ed February 3, 1982 (Interim Report)

Dear Sir:

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

Very truly yours, i

pc

• C /CLLL_3 ( p O LLL E. E. Van Brunt, Jr.

APS Vice President Nuclear Projects ANPP Project Director l EEVBJr/GHD:db I

l Enclosures l

I cc: See Attached Page 2 I l 8207230219 820706 PDR ADOCK 05000528 g PDR y _jQ

U. S. Nuclear Regulatory Commission i - Attention: Mr. T. W. Bishop, Chief 4

. July 6,.1982 ,

ANPP-21321-GHD/BSK Page 2 cc: Richard DeYoung, Director ~

Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission

. Washington, D. C. 20555 J. A. Roedel

• D. B. Fasnacht G. C. Andognini A. C. Rogers .

B. S. Kaplan

W. E. Ide

! J. Vorces J. A. Brand i

A. C. Gehr l W. J. Stubblefield I W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant l D. R. Hawkinson .

L. E. Vorderbrueggen i G. A. Fiorelli

! Lynne Bernabei, Esq.

Harmon & Weiss i

1725 "I" Street, NW Suite 506 Washington, D. C. 20006 l

R. L. Greenfield l

Assistant Attorney General Bataan Memorial Building ,

Santa Fe, New Mexico 87503 r

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. s i FINAL REPORT - DER 81-57 DEFICIENCY EVALUATION 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNITS 1, 2 & 3

1. Description of Deficiency Pursuant to a General Electric 10CFR Part 21 Report, Bechtel has been notified that some of the type HMA auxiliary relays manufactured from 1976 through June, 1981, may have the following problem:

The length of the uninsulated flexible leads connected to the movable contacts exceeds the allowable dimensions and can result in reduced spacing between the leads and the coil circuits. This condition introduces the possibility of circuit connection between the flexible leads on the HMA contact-circuits and the adjacent coil circuit terminals.

II. Analysis of Safety Implications This condition has been evaluated as reportable by the manufacturer, and the subject components exist in the equipment delivered to the jobsite. Bechtel Engineering has determined that the identified HMA relays are installed in safety related switch gear, load centers, and AC distribution panels, plus other non-safety related equipment, all of which has been delivered for the three units.

III. Corrective Action Bechtel Engineering has provided Bechtel Construction with the list of equipment to inspect for these relays (IOM-E-9536 dated February 5,1982).

Construction shall perform the necessary modifications in accordance with rework identified by General Electric in their Service Advice Number SA721-PSM166.1. Startup shall verify that the necessary modification has been implemented during the test program prior to turn over. The corrective action will be documented on a combination of nonconformance reports and startup work permits.

ATTACHMENT TO DER 81-57 '

. Bechtel Power Corporation

,( interoffice Memorandum To W. J. Stubblefield File No. EM-009 sodi.c ANPP Job 10407 o.t.

IOM-E-9536 MOC 184997 IDIA Relays February 5, 1982 From W. G. Bingham of Engineering copies to W. H. Wilson At LAPD Ext. 539 R. R. Stiens FE. 4 r ttwerteik '

%Berman" - + '

T. E. Hartman V. M. Torikian All w/ enclosure

Reference:

(A) Deficiency Evaluation Report (DER),

December 22, 1981 '

(B) GE Letter to W. G. Bingham, December 10, 1981 (C) GE Letter to W. G. Bingham, November 5, 1981 k We have been advised by GE per Reference (C) that Dave Porter of Installation and Service Engineering is working direct with you regarding GE Service Advices. This is to request you to check the GE EMA relays per Reference (B) and to issue Non-Conformance Reports for defective relays, if found.

1 Nonconforming items should be returned to GE for replacement.

i Action should be brought to the attention of R. C. Danford of GE l

I&SE Phoenix office and D. Porter.

Please submit copies of all activities to Engineering for our record.

W. G. Bingham WGB:RB:pb

Enclosures:

(1) Deficiency Evaluation Report (DER),

December 22, 1981 (2 pages, I copy)

(2) GE Letter to W. G. Bingham, December 10, 1981 (2 pages, I copy)

(3) GE Letter to W. G. Bingham, November 5,1981

, (1 page, I copy)

( (4) List of Equipment where "BMA" Relay is Used (1 page, I copy) s.4o- ... ser4 =o4=oi s ens , __ _ .

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, ATTACHMENT TO DER 81-57 LIST OF EQUIPMENT WHERE "HMA RELAY" IS USED EQUIPMENT RELAY DESIGNATION LOCATION

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1. ALL 13+8 kV SWGR BRKRS Anti-Pumping Relay - 52Y SWGR Bldg., Turbine Bldg.

Startup IFMR, Yard, etc/

2. ALL 4*16 kV SWGR BRKRS Anti-Pumping Relay - 52Y SWCR Bldg., Cont. Bldg.,

C1g. Tower

3. 480V L.C. PGA-L31 Aux. Relay - 511, SIX Control Bldg. - El. 100' Compt. L31C

4. 480V L.C. PGB-L32 Aux. Relay - 51X, Control Bldg. - El. 100' Compt. L32C

5. 480V L.C. PGB-L34 Aux. Relay - SIX, Control Bldg. - E1. 100' Compt. L34C

6. 480V L.C. PGA-L35 Aux. Relay - SIX, 51X Control Bldg. - E1. 100' Compt. L35C

7. 480V L.C. PGB-L36 Aux. Relay - 51X, 51 Control Bldg. - E1. 100' Compt. L36C

8. 120V AC PWR PNL Aux. Relay - RA, RE Control Bldg. - El. 100' Class 1E E-PNA-D25 I 9. 120VAC PWR PNL Aux. Relay - RA, RE Control Bldg. - El. 100' Class 1E E-PNB-D26

10. 120V AC PWR PNL Aux. Relay - RA, RE Control Bldg. - El. 100' Class 1E E-PNC-D27

11. 120VAC PWR PNL Aux. Relay - RA, RE Control Bldg. - E1. 100' Class 1E E-PND-D28

12. 120 TRAC .PWR PNL Aux. Relay - RA1,RA2,RE Control Bldg. - E1. 120' Non-Class IE E-NNN-D11

13. 120VAC PWR PNL Aux. Relay - RAI,RA2,RE Control Bldg. - El. 120' l Non-Class IE E-NNN-D12

14. 120VAC PWR PNL Aux. Relay - RA1,RA2 Turbine Bldg. - El. 100' Non-Class IE E-NNN-DIS i 15. 120VAC PWR PNL Aux. Relay - RA1,RA2 Auxiliary Bldg. - El. 120' Non-Class IE E-NNN-D16 l

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' I NSTALLATION AND 0 E N E F; A L (y E L E C T P. I C Ssavice suoissanino DIVISION ATTACHMEMT TO DER 81-57 GENERAL ELECTRIC CQMPANY .

5320 NORTH 16TH STREET PHOENIX, ARIZONA 85016. Phone (602) 264-1751 ELECTRICAL AND ELECTRONIC December 10 1981 ""

n.t _@Mjf___

Mr. W.C. Bingham U 11'81 Project Eng. Mgr.

• Bechtel Power Corp.

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P.O. Box 60860 -g)__,'i['!{ ._

Terminal Annex .,.u .

Los Angeles, CA 90060 1 } .

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Dear Mr. Bingha=:

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g f,7 5.- ' -'~T S. A. 721-PF-

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This letter serves to notify you of a possible deficiency in Type Hhn 1tu xillary'- -

relays manufactured during the period from 1976 through June 1981.

determined that the length of the uninsulated flexible leads connected It%23I beet-~T.

moveable contacts of some Hhn relays exceeds the allowablendimensions! '~ !

a%ihe-result in reduced spacing between the leads and the coil circuit termina*,'dTan 1s .- -

A1_though no known failures have occurred, the reduced spacing introduces the possibility of circuit circuits and the adjacent coil circuit terminals. connection between the flexible leads of the HM These relays are identified by the date code on the Q.C. Acceptance sticker The code consists of two numbers followed by any of the following suffixes:

O C. Attestanta 17 ER AM BM CM DM EM FM GM HM JM AN BN CN DN KM LM MM EN FN GN HN AP dP JN KN LN 16 CP DP EP FP AR GP HP JP KP LP BR CR DR ER MP FR GR HR JR AS BS CS KR LR MR DS ES FS GS AT BT HS JS KS 1.5 MS CT DT ET Fr Lese date codes cover the period from January 1976 through June 1981.

ATTACHMENT TO DER 81-57

'It is recomm:ndrd that HMA ralrys with cny of the tbova listed date codes be inspected for lead to terminal spacing.

leads can touch the coil circuit If it is determined that the flexible assembling a heat shrinkable insulating tubing over the contact terminals.

assembly procedure follows: The terminals, t 1.

Remove the mounting of the pelay, screw then remove thefrom the moveable contact support at the front two captive coil springs. top portion of the support along with the 2.

Place.a 5/8 inch long by 0.3 inch inside diameter piece of heat shrinkable -

tubing over each of the moveable contacts and slide the tubing along the contacts and flexible leads and all the way onto the contact terminals.

The tubing will cover the terminals and approximately 5/16 of an inch of the flexible leads.

3.

Replace the moveable contacts in the contact support and position the flexible leads in the lead slots in the support. Reassemble the contact support, springs and mounting screw. The screw should be tightened sufficiently to compress the lockwasher under the head of the screw.

4.

Shrink heat, the tubing about the terminals and flexible leads by applying moderato in the order of 150 C, from a source such as an electric air gun.

5.

Check freedom of operation of the relay by depressing and then releasing the contact support assembly. The support assembly should snap back to its o'riginal friction or position when it is released and there should be no indication of.

binding.

HMA relay calibration (operating voltage) is determined by the amount of tension on the HMA control spring. As spring tension will-not be changed by application of the tubing, recalibration of the relays is not considered necessary. However, if the user wishes to check the calibration after application of the tubing, test instructions in the applicable HMA instruction book should be followed.

Three places where HMA relays are used are:

2 1. inside a HKA29EM12 relay assembly, 3 as the anti-pump relay on the Magna-Blast breaker, GE # 0137A7575, and as the anti-pump relay on the Power-Vac breaker, GE # 282A2008.

General Electric will supply the insulating tubing at no cost to you. You will need two (2) pieces of GE # 0127A7827 P446 tubing 5/8 inch long for each relay.

The offer of this tubing will remain available until May 12, 1983 We installation.thatPlease expect you will provide the necessary labor and testing facilities for contact the undersigned for the tubing, specifying the number of relays you wish to repair and their date codes. Should you require further assistance, please contact the undersigned.

The Nuclear Regulatory Commission has been informed of this problem pursuant to 10CFR21. .

enetof Norman P. David Field Engineer -

NPD:rmh

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