SNRC-1048, Responds to IE Bulletin 84-02, Failures of GE Type Hfa Relays in Use in Class 1E Safety Sys. Relays W/Nylon Coil Spools Replaced W/Lexan Coils.Hfa Relay Coil Replaced W/Ge Century Series Tefzel Coil

Responds to IE Bulletin 84-02, Failures of GE Type Hfa Relays in Use in Class 1E Safety Sys. Relays W/Nylon Coil Spools Replaced W/Lexan Coils.Hfa Relay Coil Replaced W/Ge Century Series Tefzel Coil

ML20096G952
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	09/07/1984
From:	Leonard J LONG ISLAND LIGHTING CO.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IEB-84-02, IEB-84-2, SNRC-1048, NUDOCS 8409110217
Download: ML20096G952 (4)

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6mmmem.m GHOREHAM NUCLEAR POWER STATION P.O. BOX 618. P ORTH COUNTRY RO AD + WADING RIVER. N.Y.11792 JOHN D. LEONARD, JR.

VICE PRESIDENT. NUCLEA R OPE RATIONS September 7, 1984 SNRC-1048 Dr. Thomas E. Murley Regional Administrator U.S. Nuclear Regulatory Commission 631 Park Avenue King Of Prussia, PA 19406 I.E. Bulletin No. 84-02:

Failures of General Electric Type HFA Relays In Use In Class IE Safety Systems Docket No. 50-322

Dear Dr. Murley:

The subject Bulletin describes failure of General Electric type HFA relays utilizing either nylon or lexan as the coil spool material.

The following corrective actions have been performed at Shoreham with respect to the problems described in I.E. Bulletin 84-02.

1. Replacement of Nylon Coils with Lexan Coils In response to 1.E. Bulletin 76-02 and GE Service Advice Letter 152.1 a survey was conducted of affected relays which included type HFA relays. Relays found to contain nylon coil spools had these replaced with lexan coils. This was reviewed by the NRC Resident Inspector, and Bulletin 76-02 was closed in NRC Inspection 80-11.

2. Replacement of Lexan Coils with Century Series Tefzel Coils The cracking of lexan coils as described in GE Service Advice Letters 152.2 and 152.2a was reported to the NRC as a report-able deficiency (ref. SNRC-694) and was tracked as Inspection Item 82-00-05. Per SIL-44 and supplements, corrective actions required the replacement of the HFA relay coil with a GE Century Series tefzel coil, or the replacement of the entire relay with a Century Series relay.

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Paga.2 Safety related type'HFA relays, whether utilized in normally energized'or de-energized applications were either replaced with GE' Century relays, or had their coil assemblies replaced with-tefzel coils'..

'In order to ensure that the older and problematic HFA relay coils are not inadvertently used as replacement parts, the nylon /lexan coi's have been-removed from the safety-related equipment-storage inventory.

Inspection item 82-00-05 was reviewed by NRC' Region I per-sonnel and was closed in NRC Inspection Report 50-322/83-16.

-It should.be noted that the replacement program described above has been extended to include non-safety related type HFA relays.

The portion of the_ program involving non-safety type HFA relays is

-in progress.

'The following information pertains to the general concerns of the Bulletin. General Electric type HFA relays are employed in various' safety relatedEsystems, including the Reactor Protection System.

A Deficient Items List, maintained by Operational Quality Assur-ance, has.been updated to require that future _ procurement of these type relays as' spare parts requires certification that the relays be supplied with tefzel coils.

LThe Shoreham surveillance and maintenance program includes

'information. supplied by the equipment manufacturers and vendors regarding required equipment maintenance actions and their frequency. In addition, as demonstrated earlier in this' letter, LILC0 routinely reviews vendor information such as GE Service Information Letters and~ Service Advice Letters and takes remedial

-action where_ appropriate.

Furthermore, the Shoreham surveillance and maintenance programs include documented program plans and procedures to assure that the safety-related' equipment.is maintained in a state of readiness and operability _so that'it will perform its intended safety function upon_ demand.

The contents of this letter should satisfy the requirements of the written report sought by item 2b of I.E. Bulletin No. 84-02.

I. E. Bulletin 84-02 page 4 of 6 specifies the actions required of plants under construction. Item 2a requests plans and schedules for~ replacing both normally energized and normally de-energized HFA-relays as specified by this bulletin which are utilized in safety-related systems at Shoreham. Since, as discussed above, theacoil assembly replacement called for by this Bulletin was completed, subsequently inspected, and accepted by NRC Region I personnel, there is no need to. provide Shoreham specific plans and schedules.

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Pagel3 iShould you.or:any' members of'your staff have any questions

reg'arding our.:-response to this bulletin please do not hesitate to call ~my office'.

Very truly yo s,. >

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/ Jo n I D16%Md D.- Leonard, -Jr. /

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, y JOHN D.:. LEONARD',JJR,;being duly ~. sworn,. deposes and.says I1am'the a Vice President, Nuclear Operations for the Long Island

-Lighting Company. ':I have read I.E. Bulletin No. 84-02: " Failures sof General'Electic Type HFA Relays in'Use in Class IE Safety l Systems". .I'have also' read this-response which was prepared under imy direction. Land dated September.7, 1984.- The. facts set forth in-this. response are. based.upon' reports andsinformation provided to

.me._by-theTemployees, agents--and. representatives of Long Island

Lighting Company responsible ~for the! activities. described in'sa'id LI.E.7 Bulletin and in said response. I believe;the' facts set forth

.in said response are true.

L 'NAAf . ~'

J n DZ Leonard, _ r Swore *to:before meLthis

-7 day of J M 1984 ado CONNIE-MARtA PARDU

-, GARY PUBUC, State of New Y0ft -

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