ML20148N309

Documents Differences Between Util Programs Planned for Restart of Unit 1 & Programs Used for Restart of Unit 2. Nuclear Performance Plan Will Be Revised to Include Detailed Info on Four Unit 1 Programs by 880429.New Commitments Encl

ML20148N309
Person / Time
Site:	Sequoyah
Issue date:	03/31/1988
From:	Gridley R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8804060440
Download: ML20148N309 (8)

Text

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TENNESSEE VALLEY AUTHORITY CH ATTANOOG A. TENNESSEE 37401 SN 157B Lookout. Place MAR 311988 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C.

20555 Gentlemen:

In the Matter of

)

Docket Nos. 50-327 Tennessee Valley Authority

)

50-328 SEQUOYAll NUCLEAR PLANT (SQN) - UNIT 1 RESTART PLAN This letter documents the dif ferences between TVA's programs planned for the restart of unit 1 and the programs used for the restart of unit. 2.

Forty programs were identified as being the same for bot.h units.

Four unit 1 programs were identified as being dif ferent because of lessons learned on unit 2 or they are unique to unit 1.

A description of these program differences is included in enclosure 1.

The Sequoyah nuclear Performance Plan will be revised to include detailed information on these four unit 1 programs by April 29, 1988. is a compilation of new commitments made In this letter.

If you have any questions, please telephone M. R. liarding at (615) 870-6422.

Very truly yours, TENNESSEE VALt.EY AUTil0RITY

~

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R.

Gridley, Director Nuclear Licenning and Regulatory Affairs i

Enclosures cc:

See page 2 I

8804060440 080331

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PDR ADOCK 05000327 P

PDR An Equal Opportunity Employer

_2 U.S. Nuclear Regulatory Cornission i AR 311988311988(

cc (Enclosures):

Mr. K. P.

Barr, Acting Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region 11 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. C.

G.

Zech, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission one White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Sequoyah Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379

ENCLOSURE 1 SEQUOYAH NUCLEAR PLANT - UNIT 1 kESTART PLAN EXECUTIVE

SUMMARY

In order to develop the Sequoyah Nuclear Plant (SQN) unit I restart plan, an evaluation of the unit 2 programs identified in the SQN Nuclear Performance Plan (SNPP) and the correspondence between TVA and NRC was performed.

Each unit 2 program was evaluated by the manager responsible for the implementation of that program. These evaluations concluded that 40 of the 44 unit 1 programs are identical to the unit 2 programs and therefore have been revlewed and approved by the staff with the issuance of the unit 2 Restart Safety Evaluation Report. The remaining four programs arc different because of lessons learned from unit 2 or they are unique to unit 1. shows the results of these evaluations.

The four unit 1 progre.ms are:

the Civil Engineering Program; the Design Baselino and Verification Program (DBVP); the Operational Readiness Program; and the Restart Activities List. A brief description of the differences between units 1 and 2 for these four programs is provided below.

PROGRAM DIFFERENCE 1 1.0 DBVP The unit 1 DBVP is the same as the protram for unit 2 with the following two exceptions: The unit 1 DBVP takes eredit for the applicable unit 2 reviews, and the review of testing has been transferred to TVA's Restart Test Program.

The implementation of the unit 1 DBVP has also been structured into two phases. The prorestart phase carrios out the program for the unit 1 portion of the systems required to mitigate the Final Safety Analysis Report (FSAR) Chapter 15 accidents and to provide for safe shutdown. The postrostart phase will continue the engincoring activities to complete engineering documentation describing the functional as-constructed configurations. Also, the postrostart phase will extend the program to unit 1 prerestart phaso punchlist items not required for restart and to other safety-related systems.

2.0 CIVIL ENGINEERING PROGRAM Several activities are included in what is called the civil engincoring program for unit 1.

Those activities includo:

preparation and submittal of the responso to Information and Enforcement (IE)Bulletin 79-14 for unit 1; verification of alternato analysis calculations; regeneration of missing rigorous analysis pipo support calculations; and restart resolution of Condition Adverso to Quality Roports (CAQRs), Engincoring Chango Notices (ECNs), audit findings, and employco concerns.

Therefore, the unit 1 program is essentially the samo as unit 2 except a final report will be submitted on IE Bulletin 19-14 for unit 1.

Unit I work items have been planned and scheduled to:

perform necessary function 41 verification walkdowns; evaluate and disposition outs *anding restart paperwork; regonorato calculations as necessary; issue required pipo support modifications to meet design bases; and field-complete pipe support modifications needed to meet interim pipe support design critoria. The interim pipe support design criteria will be provided by April 29, 1988. The civil engineering program will be completed and the final report for IE Bulletin 79-14 for unit I will be submitted to NRC before restart.

3.0 RESTART ACTIVITIES LIST The identification and tracking of unit i restart items are accomplished by the use of the Office of Nuclear Power's (ONP)

Tracking and Reporting of Open Items (TROI) System rather than the Sequoyah Activities List used for unit 2.

The unit i restart list was developed by an item-by-item review of completed and open unit 2 restart activities and of open unit 1 issues.

After this review, a baseline was established for the unit i restart list.

Standard Practico SQA203, "Use of TROI for unit 1 Restart Action List," was issued to specify the requirements for maintaining and controlling the unit I restart list.

The SQA203 restart criteria uced to guido the line organizations in raising potential restart issues and making recommendations to management are the same restart criteria set forth in the SNPP.

The Site Director has identified a unit 1 Restart Director who is responsible for coordinating the activities for the unit i restari effort. The unit 1 Restart Director reports directly to the Site Director and has responsibility and authority to establish specific schedulo priorities, to ensure that line managers are coordinating their activities to completo all restart actions, to establish site goals as appropriate to achievo a safe and timely restart, to call and conduct restart schedulo status meetings, and to ensure performance of the individual groups and integrated work activities. This position has boon established in order to ensure that all restart requirements are properly completed in an integrated fashion and on a timely basis. Through the activities of the unit 1 Restart Director, the Sito Director is provided with an early signal of potential problem areas and is able to take prompt action.

4.0 OPERATIONAL READINESS PROGRAM The SQN unit 1 operational readiness program will requiro that line managers utilizo a syr.tematic process for the identification and certification of closure of individual restart items for which they are responsible. The unit 1 program will focus on activity closuro rather than on program and management system evaluations, which

were performed for unit 2 restart. The u.at 1 program will be accomplished by implementation of a startup prerequisite checklist similar to that used for unit 2 restart, However, the unit 1 prerequisite checklist will also address the adequacy of staff support for two-unit operation.

The startup prerequisite checklist will be made a part of the Restart Test Instruction (RTI) 1.1, "Master Test Sequence," for unit 1.

The site Director will use the signed-off startup prerequisite checklist as well as other status reviews and inputs to make his recommendation for SQN unit I restart to the Manager, ONP.

The Manager, ONP, will approve restart of SQN unit 1 only when he is satisfied that all preparations for restart hav6 been satisfactorily completed.

O b

i r

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ENCLOSURE 2 1.

The SNPP will be revised to include detailed informatlon on the:e four unit 1 programs and a description of the differences between these unit 1 and unit 2 programs by Apell 29, 1988.

2.

The civil engineering program will be completed and the final report for IE Bulletin 79-14 for unit 1 will be submitted before restart.

3.

The interim pipe support design criteria will be provided by Apell 29, 1988.

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ATTACHMENT 1 COMPARISON OF UNIT 1 PROGRAMS WITH UNIT 2 PROGRAMS l IDENTICAL TO UNIT 2 l UNIT I PROGRAMS ITEM lCLOSEDBYlFIELOWORK lTHATAREO!FFERENT l UNIT 2 l ONLY l

FROM UNIT 2

1. ENVIRONMENTAL QUALIFICATION l lX l

2. DESIGN BASELINE AND l

l l

VERIFICATION PROGRAM l

l lXII)

3. CA8LE TRAY SUPPORT ANALYSIS l lX l

4. DESIGN CALCUIATIONS REVIEW l lX l

S.ALTERNATELYANALYZEDPlPINGl l

AND SUPPOR15 l

X l

6, MAIN STEAM LINE BREAK l

l l

TEMPERATURE ISSUES l

lX l

7. FIRE PROTECTION-APPF.40lX R lX l

l

8. PLANT WELDING PROGRAM lX l

l

9. SENSE LINE ISSUES l

a) SENSE LINE SLOPE X

l b) CO WRESSION FITTING l

l l

PROBLEM lX l

l c) TEFLOW TAPE lX l

l

10. WALL THINNING ASSESSMENT l

l l

PROGRAM l

lX l

11. RESTART TEST PROGRAM l

lX l

12. COMPONENT AND PIECE PART l

l l

W.:.lFICATION l

lX l

13. ELP.TRICAL ISSUES l

l l

1' a) CABLE AMACITY X

b) CABLE PULLING X(2) c) FU';ES lX l

l

14. CONTAINMENT ISOLAT10N l

l l

OESIGN REVIEW lX l

l

15. MISCELIANEOUS PROGRAM l

l l

a) MISC civil ENGINEERING ISSUES l

X(3) b) M00FRATE ENERGY LINE l

l l

BREAK FLOODING lX l

l c) CONTAlWMENT COATINGS l

lX l

d) ECCS WATER LOSS OUTSIDE l l

l THE CRANE WALL l

lX l

e) PLATFORM THERMAL GROWTH l lX l

f) llEAT CODE TRACEABILITY lX l

l

16. TECHNICAL SPECIFICATIONS lX l

l

17. 1 RAINING lX l

l

18. PROCEDUREE l

lX l

19. CORRECTIVE ACTION lX l

l

20. QUALITY A550RMCE lX l

l

21. EMPLOYEE CONCFStiS l

lX l

t

22. NEW DESIGN C0thn0L PkOGRAM lX l

l

23. SURVEILLANCE INSTRUCTION l

l l

rR0Ct00Res rROGRAM l

lX l

6

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

2

24. MIN 1ENANCE l

l l

a) MANAGEMENT IWYOLVEMENT lX l

l b) MIN 1ENANCE INSTRUCTION l l

l ENHANCEMENT l

lX l

c) PREVENTIVE MlW1ENANCE l

lX l

d) MINTENANCE TRAINING lX l

l e) AD0!TIONAL MINTENfNCE l

l l

RESTART ACTIVITIES l

lX l

25.OPERAtl0NALREADINESSREVIEWl l

lX

26. RADIOLOGICAL CONTROL X

27. 0"ERA 81LITY REVIEW X

28. FUNCTIONAL TESTING l

lX l

29. RESTART AC11VlilES LIST l

l lX

30. PROCUREMENT

• lX l

l

31. CONTROL ROOM DE51CN REVIEnP l X l

l Notes: (I)

Unit I program takes credit for unit 2 reviews that are applicable. Review of testing transferred to Restart Test Program.

(2)

Fieldwork for vertical cable support pads for affected 50.49 silicone rubber cables inside unit I containment.

(3)

Unit I program will sutznit a response to IE Bulletin 7914.

• Not included in the SNPP G

I I

o y.

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