ML20027A579

Forwards Bechtel Pwr Corp 781213 Ltr Confirming That No Bf or Bfd Relays Are Presently Used in safety-related Portions of the Snupps Design

ML20027A579
Person / Time
Site:	Callaway
Issue date:	12/14/1978
From:	Bryan J UNION ELECTRIC CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 7812290277
Download: ML20027A579 (2)

Text

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. UNION EL.ECTRIC COMPANY 1901 GMATIOT STREET ST. Louts. Missount soHN K. MYAN , gggg g

= = = = . . - December 14, 1978 .w w w .. - ...ua. .. . . .

Mr. James G. Keppler, Director .

Office of Inspection and Enforcement, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 ULNRC-299

Dear Mr. Keppler:

NRC CIRCULAR NO. 76-02 Ref: 1. NRC Letter to UE dated August 17, 1976

2. UE Letter to NRC (ULNRC-169) of September 27, 1976 During an inspection at the Callaway Plant site on December 4-6, 1978, Mr. Schweibinz noted that our response-(Reference 2) to the subject circular was not adequately supported.

Specifically, our statement that Westinghouse BF and BFD type relays were not incorporated in design of safety-related systems at Callat,ay could not be supported by. the designer's investigation, which apparently covered only the Westinghouse NSSS scope of supply.

i In a. telephone conversation on December 8, our Mr. D. F.

Schnell informed Mr. Schweibinz that we had directed Bechtel to -

review all safety-related systems for possible.use of these relays.

The attached response fron Bechtel, letter No. BLSE-6754 dated December 13, 1978, confirms that no BF or BFD relays are presently used in safety-related portions of the SNUPPS (Callaway) design, either within the NSSS or the Bechtel scope of supply.

I Very truly yours, I

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. Bechtel Power Corporation Er: sinters-Constructors 15740 Shecy Grove flood . p Goldiserbutg, f.*aryland 20760 d;r 301-N 8 2700 Ifr. 1:icholas A. Petrick DEC 13 B78 Executive Director, SWF25 5 Ciche Cherry Pond -

Pockville, Maryland 20850 BLsE-Q15k File 9415 Bechtel Job lio, 10466 "

S!MPPS Project tiestin6ouce 2F & 2FD Relav Tailures Ref: 1. SLB5 78-1115 dated Deceder 6,1978'

2. BLSE-3551 dated September 15, 1976

Dear 2:

r. Petrick: '.

Reference 1 requeste that Eechtel deter =ine the una of Westinghcuce BF and EFD relays in any safety reisted syster.s in the S!MPPS design, including Wastinghouse systc=2 other than the solid state preccetion system. Syste=s within the 2echtel scope are included in this determination.

Picssa be advised that the response sent by Reference 2 addressed the use --

of the subject relaya only within the !?cstinghouse acepe of supply ~. The limited scount of vendor infor : tion available at the ti=e. of. the IE circular precluded cur cddreccing balance of pir.nt equipment as to the .

use of the relays. Howe.er, at the ti=e of our response, ve were aware of no applications of thin type of relay.

we have at this ti=e conducted a survey of all cafety related equip =ent packages which confir=s that no EF or ITD relays are presently used in safety related portione of the S NFIS design, either within the 1:355 or Bechtel scope of supply. This deterriinaticn was carried out by re. view of vendor drawings and bills of caterial. Ehere such inforzation was not available, the vendcra vare contacted by telephone.

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