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

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. TENNESSEE VALLEY-AUTHORITY bw4 i*

SN 157B Lookout Place u

{:O May-23, 1990 U.S. Nuclear Regulaury. Commission

' ATTN: Document Control Desk.

Washington, D.C.-

20555 centlement I'n the Matter of'

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Docket No. 50-328 g

-Tennessee: Valley Authority

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.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.

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~If you have any. questions concerning this issue, please telephone M. A. Cooper at (615) 843-6651.

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

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.'. Bynum Interim' Site Director t

Enclosure cc-(Enclosure):

,l Ms.jS.

C.' Black, Assistant Director

!for Projects.

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. TVA' Projects Division U.S'.'. Nuclear Regulatory Commission L0ne White Flint,-North 11555'Rockville Pike l

Rockville, Maryland 20852

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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

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l 9005310357 900523 4

FOR ADOCK 05000328 S

PDC I

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An Equal Opportunity Employer.

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.l ENCLOSURE a

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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 and: an ' automatic fire suppression system.

(This is one of several allowable s

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 -

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

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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.

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