ML20045D918

Suppls 920930 Response to Suppl 1 to NRC Bulletin 92-001, Failure of Thermo-Lag 330 Fire Barrier Sys to Perform Specific Fire Endurance Function.

ML20045D918
Person / Time
Site:	McGuire
Issue date:	06/17/1993
From:	Mcmeekin T DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-92-001, IEB-92-1, NUDOCS 9306300219
Download: ML20045D918 (3)

Text

'

n .

Duke 1%urr Company T C Mcutta .

• ' McGuire Nuch:sr Generation Departinent ViceIWsident

. 12700 Hagers Terry Road (MG01A) (704)S75-4800

~

Huntersville. NC28078 8985 . (TQ4)S75 4809 Fn buKEPOWER June 17, 1993 U. S. Nuclear Regulatory Commission

. Attention Document Control Desk Washington, D. C. 20555 ,

Subject:

McGuire Nuclear Station, Units 1 and 2 '

Docket Nos. 50-369 and 50-370 HRC'Dulletin No. 92-01, Snoplement 1 Failure of Thermo-Lag 330 rire Barrier System to Perform its Specific Fire Endurance Function

Dear Sir; ,

A response for McGuire Nuclear Station to. Supplement 1 of NRC Bulletin 92-01 was provided by a letter dated September 30, 1992. In responso to NRC Requested Action 1 of the bulletin, three areas at McGuire were identified which utilized Thermo-Lag-330 as a fire barrier material to protect safe shutdown equipment. A brief description.of the equipment that was being protected within each area was-also identified. For one of the areas (Unit 1 Train "B" Switchgear room), not all of the safe shutdown equipment being protected was identified within the response.

The following identifies the additional safe shutdown equipment within the Unit 1 Train "B" Switchgear room that is being protected by Thermo-Lag 330: the Unit 1A control cable.for the centrifugal charging pump, the Unit 1A control cable for the motor driven auxiliary feedwater pump, the' _

Unit 1A control cable for the nuclear service water' pump, and the train "A" pressurizer heater power cable.

Tho above discussion supplements the safe shutdown equipment that was identified within our September 30, 1992 response.-  ;

Please contact Paul Guill at (704).875-4002, if you-have any '

questions regarding this issue.

9306300219 930617 PDR ADOCK 05000369 \g '

-G PDR

. . , . . 3l -

inw,, w ma e

v v

s. - _3 U .: S.LNuclear. Regulatory Commission June 17, 1993 page'2 I declare under penalties of perjury that the statements set forth herein are true and correct to the best of my knowledge.

Very truly yours, d

T. C. McMeekin xc: Mr. S. D. Ebneter Regional. Administrator, Region II U. S. Nuclear' Regulatory Commission 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. P. K~. Van Doorn Senior NRC Resident Inspector, McGuire McGuire Nuclear Station Mr. Victor Nerses, Project Manager Office of Nuclear Reactor Regulation U.; S. Nuclear Regulatory Commission.

One White Flint North, Mail Stop 9H3 Washington, D.C. 20555 i

.I

'l

.l l

I l

u 4 J,<

.. . - - , . ~ . . . . _ .. . ._- . . . .., .

- 4 ,.

g -j - ,

• v 4 i 4

' U.LS.-Nuclear'Re'gula' tory Commissien June 17, 1993 page'3:

bec: R. O. Sharpe P. F. Guill J. A. Oldham G. A. Copp (NS) ->

R. P. Colaianni (NS)

File: 801.01

\pfg098.nrc 5

r:

I p

t 4 --w>t u - ----- _-- - - _ - - _---_-._ _ . _ - - --a-u-.-- --- et-_a-" . . - .