ML20043B831

Ro:On 900522,cables Re Indication of RCS Pressure Encl in 1-hr Fire Rated Barrier But Area Not Covered by Fire Detectors or Automatic Fire Suppression Sys.Corrective Actions Plan Will Be Provided in 14-day Followup Rept

ML20043B831
Person / Time
Site:	Sequoyah
Issue date:	05/23/1990
From:	Bynum J TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9005310357
Download: ML20043B831 (2)

Text

ym ,

O ,

1, b ' ' "

. TENNESSEE VALLEY- AUTHORITY bw4 i* .

SN 157B Lookout Place u .

May-23, 1990

{:O U.S. Nuclear Regulaury. Commission

' ATTN: Document Control Desk .

Washington, D.C.- 20555 centlement I'n the Matter of' )- Docket No. 50-328 g ,

-Tennessee: Valley Authority ).

.SEQUOYAH NUCLEAR PLANT (SQN) UNIT 2 - DOCKET NO.-50-328 - FACILITY OPERATING LICENSE DPR-79 .* UNIT 2 LICENSE CONDITION 2.C.13.c'- 10 CFR 50 APPENDIX R'

, This'_ facsimile transmission confirms information concerning noncompliance with' requirementsiof Licensee Condition, Section 2.C.13.c. of the Unit 2 Facility Operating-License initially-reported by telephone notification at.1100 Eastern' y

' daylight time on May. 23,-1990 1 Details are-provided in the enclosure. The j condition is applicable to Unit 2.- This report is being made in accordance with R Unit 2' License Condition 2.H.

~

4 1

~If you have any. questions concerning this issue, please telephone M. A. Cooper '!

at (615) 843-6651. l l

'Very truly.yours, TENNESSP.E VALLEY AUTHORITY l

3

.' . Bynum Interim' Site Director Enclosure t cc-(Enclosure): ,l Ms.jS. C.' Black, Assistant Director -!

,, !for Projects . q

• . TVA' Projects Division U.S'.'. Nuclear Regulatory Commission L0ne White Flint,-North '

. 11555'Rockville Pike l Rockville, Maryland 20852 .j q

NRC Resident Inspector j 7 Sequoyah Nuclear Plant l 2600:Igou Ferry Road  ;

Soddy Daisy, Tennessee 37379 -l Mr.'B.,A.~ Wilson,. Assistant Director

! for Inspection Programs TVA'. Projects' Division U.S. Nuclear Regulatory Commission t Region'II'  ;

101Marietta Street, NW, Suite 2900 .

Atlanta, Georgia. 30323 9005310357 900523

[ <

l 4

FOR ADOCK 05000328 ..

S PDC I

, l

'(' ' An Equal Opportunity Employer . 'I

i. ; m '

.l

.. ENCLOSURE a

/

A noncompliance with Unit 2 License Condition 2.C.13.c requirements was identified on May.22, 1990. Unit 2 License Condition 2.C.13.c -in part tequires TVA:to. comply with Section III.G of 10 CFR 50 Appendix R.- Section

~III.G.2.c of Appendix R requires enclosure of cables related to safe shutdown

. capability .in ~a;1-hour fire-rated barrier: and installation of fire detectors s and: an ' automatic fire suppression system. (This is one of several allowable configurations to. ensure that one redundant train of systems necessary to achieve and maintain hot shutdown conditions is free of fire damage. Other allowable _configuratiens are described in Section III.G.2~of' Appendix R.)

4 During performance of a plant: walkdown inspection it was discovered that -

cables related to indication of Unit 2 reactor. coolant Lystem (RCS)= pressure,

~

).

RCS tempetature, steam < generator pressure, and pressurizer level located-in the area bounded by column lines All to A13 and Q to R of auxiliary building elevation 690=(boric acid storage tank area) are enclosed in-a'l-hour fire-rated barrier, as required,-but that the area.is not covered by fire deteators or-an' automatic fire. suppression system. 'The cables are not in compliance with the other configurations allowed by Section III.G.2 of Appendix R.- 'therefore, 'these cablesLare in. noncompliance with Section III.G -

.of Appendix.h and, consequently, with Unit 2 License Condition 2.C.13.c.

The-affected area-has been and continues to be included in the surveillance of roving hourly fire' watch patrols. TVA is currently evaluating several potential corrective actions to address the cable-problem. 'A corrective.

Jb action plan will be provided :in the 14-day follow-up. report' required by Unit 2-

-License Condition 2.H.

.' y

,g; A

t

. 'l.

,