Text

Summary of 880913 Meeting W/Util at Site Re Unit 2 Shutdown Margin & Unit 1 Restart Readiness,Per Insp Repts 50-327/88-35 & 50-328/88-35.List of Attendees & Related Info Encl
	ML20154M923
Person / Time
Site:	Sequoyah
Issue date:	09/21/1988
From:	Black S; NRC OFFICE OF SPECIAL PROJECTS
To:	; NRC OFFICE OF SPECIAL PROJECTS
References
	IEB-88-005, IEB-88-5, NUDOCS 8809290138
	Download: ML20154M923 (16)
	v • d • e

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UNITED STATES

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NUCLEAR REGULATORY COMMISSION

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WASHING T ON,0. C. 20555

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September 21, 1983

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Docket Nos. 50-327/328

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LICENSEE:

Terrassee Vcliey Authority

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FACILITIES:

Sequoyah Nuclear Plants, Unit 1 and ?

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SUBJECT:

PEEYlNG TUPPARY REGAPOING SHUTDOVN MARGIN AND READINESS

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FOR UNIT 1 RESTART

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On September 13, 1988 the NRC staff met with TVA at the Sequoyah site to

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discuss Sequoyah, Ugjt'2 shutdown margin and readiness for Unit I restart.

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Enclosure 1 is a list of attendees.

Enclosure 2 is the TVA handout regarding

shutdown margin. Enclosure 3 is the TVA handout regarding Unit I restart

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readiness.

Enclosure 4 is a description of the Sequoyah NRC Bulletin 88-05

results to date.

Enclosure 5 is a description of the electrical calculation

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program status.

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TVA's presentation regarding shutdown margin was in response to Inspection

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Report 50-327.

V88-35. During the treeting TVA committed to ccepleting all of

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the proposed corrective actions listed on Enclosure 2 prior to Unit I restart

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except for the change frca T

to steam pressure control of the steam dumps.

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Additionally, with regard to he inappropriate Energency Operating Procedure

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(EOP) deviation ferm Westinghouse guidelines delineated in NRC Inspection

Report 50-327,328/88-35, t'e licensee comitted to review E0P step deviation

4

documents for similar types of problems.

TVA was inforred that the staff will

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notify then if an enfo .

.It conference is required.

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The status of Unit i rt .ctart readiness was nresented, including the restart

sebedule and a synopsis of work remaining for modas 4, 3, 2 ard 1.

In responte

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to NPC's request, TVA also addressed NRC Bulletin 88-05 and the electrical

calculation prcqram status.

The staff was assured that TVA is proceeding at a

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safe and deliberdte pace. The N9C ?4 hrur coverage is scheduled to begin on

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September 21, several days before TVA anticipates entering Mode 4

,

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Su: anne Black, Assistant Director

Nfy

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for Projects

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Office of Special Projects

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Enclosures:

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$6

1.

Atterdee List

)

58

2.

TVA Hardout Recardira

] y

bbutdown Margin

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os

3.

TVA Handout Regarding

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Unit 1 Pestart Readir.ess

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$kW

4

NRC Bulletin 88-05 ReSults

f) C05

5.

Electrical Calculation Progran

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Status

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cc w/erclrsures:

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See next

ige

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.

Mr. S. A. White

-2-

Sequoyah Nuclear Plant

CC:

General Counsel

Regional Administrator, Region II

Tennessee Valley Authority

U.S. Nuclear Regulatory Commission

400 West Summit Hill Drive

101 Marietta Street, N.W.

Eli B33

Atlanta, Georgia 30323

-

Knoxville, Tennessae 37902

Pesident Inspector /Se'quoyah NP

Pr. R. L. Gridley

c/o U.S. Nuclear Regulatney Commission

Tennessee Valley Authority

2600 Igou Ferry Poad

SN 157R Lookout Place

Soddy Daisy, Tennessee 37379

Chattanooga, Tennessee 37402-2801

Mr. John T. LaPoint

Mr. Michael H. Mobley, Director

Tennessee Valley Authority

Division of Radiolohical Health

Sequoyah Nuclear Plant

T.E.R.R.A. Building, 6th Floor

F.O. Box 2000

150 9th Avenue North

Soddy Daisy, Tennessee 373*/9

Nashville Tennessee 3/219-5404

Mr. M. Ray

Dr. Henry Myers Science Advisor

Tennessee Valley Authority

Committee on Interior

Sequoyah Nuclear Plant

and Insular Affairs

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P.O. Box 2000

U.S. House of Representatives

Soddy Daisy. Tennessee 37379

Washington, D.C.

20515

Pr. D. L. Williams

Tennessee Val'ey Authority

Tennessee Valley Authority

Rockville Office

4C0 Vest Sunnit Hill Drive

11921 Pockville Pike

W10 B85

Suite 40?

Knoxville, Tennessee 37902

Rockville, Maryland 20852

"

County Judge

Mr. S. A. White, Nuclear Pcwer

Hamilton County Courthouse

Senior Vice President

Chattareoga, Tennessen 37402

Ternessee Valley Authority

6N 38 A Lookout place

1101 Market Street

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Chattanooga, Tennessee 37401-2801

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Enclosure 1

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LIST OF ATTENDEES

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For September 13, 1988

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Meeting on Sequoyah 1 Restart / Shutdown Margin

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Name

Affiliation

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Suzanne Black

NRC/OSP/TVAP

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Morris Branch

NRC/TVA

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Ed Goodwin

NRC/OSP/TVAP

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Bob Pierson

NRC/OSP/TVA/PSB

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H. Rick Rogers

TVA-SQN Plant Reporting

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R. W. Fatenberry

TVA-Sqn Tech Support

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B. W. Gault

TVA-SQN Tech Support

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Jerry Roberson

TVA-Eng-Nuc. Fuel

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Bruce Schofield

TVA-SON LIC.

Steve Smith

TVA-SQN Plant Manager

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J. LaPointe

TVA-Acting Site Director

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C. H Fox

TVA

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Paul Trudel

TVA DNE Project Engineer

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Joe Bynum

TVA Nuclear Power Prod.

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S. White

TVA Nuclear Power Group

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N. C. Kazanas

TVA DNOA

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K. N. Jenison

NRC Resider.t

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D. M. Brown

TVA Nuclear Fuel

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B. Charlsen

ONP

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J. Brady

TVA-GPA

D. Eisenhut

ONP-NUS

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W. R. La eigren

TVA-NGP

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P. J. Po k

TVA-Licensing

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G. G. Putt

TVA SQN Outage Supt.

T. A. Keys

TVA-Engr-Nuclear Fuel

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Marcy Cooper

TVA-SQN Licensing

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M. J. Ray

TVA-Site Licensing Mgr.

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R. Gridley

TVA-Licensing

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T. M. Nahay

TVA-SON-Plant Assessment

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F. McCoy

NRC/OSP

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J. Partlow

NRC/OSP

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Enclosure _2

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REACTOR C00LA4T SYSTEM POSTTRIP C00LDOWN

AN ) SHUTDOWN MARGIN

1.

INTRODUCTION TO ISSUE

A.

VIOLATION 88-3S-01

B.

SHUTDOWN MARGIN WdS MAINTAINED

11.

CHRONOLOGY OF EVENTS

A.

IDENTIFICATION OF ISSUE

B.

REVIEWS BY TVA AND WESTINGHOUSE

111.

CORRECTIVE ACTIONS

A.

ACTIONS COMPLETED

B.

ACT10N0 IN PROGRESS

IV.

CONCLUSIONS

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CHRONOLOGY OF EVENTS

S/19/88 - SQN UNIT 2 TRIPPED FROM 70 PERCENT POWER.

NOTED LESS

EXCESS SHUTDOWN MARGIN THAN EXPECTED BASED ON PREVIOUS

EXPERIENCE.

6/13/88 - AS THE RESULT OF REVIEWS OF SHUTDOWN MARGIN CALCULATIONS

FOR SUBSEQUENT TRIPS, THE ISSUE CONCERNING POSTTRIP

COOLDOWNS AND SHUTDCWN MARGIN WAS IDENTIFIED.

ON 6/14/88,

A CAQR WAS INITIATED TO DOCUMENT THE ISSUE.

.

6/17/88 - W PROVIDED MINIMUM TEMPERATURE FOR THE MAINTENANCE OF SDM

FOLLOWING REACTOR TRIP FROM 70 lERCENT REACTOR POWER.

SEVENTY PERCENT POWER WAS CHOSEN BASED ON PLANS TO EXTEND

CYCLE 3 OPERATION INTO JANUARY 1989.

6/18/88 - APPROVED REVISION 3 0F ES-0.1, EMERGENCY PROCEDURE FOR

REACTOR TRIP RESPONSE, TO ENSURE COMPLIANCE WITH TECHNICAL

SPECIFICATIONS.

INSTRUCTION REVISED TO RECOMMEND THAT

AUXILIARY FEEDWATER FLOW BE LIMITED TO MAINTAIN PCS

TEMPERATURE ABOVE S20*F OR BEGIN A MANUAL BORATidN OF THE

RCS.

7/11/88 - NRC INSPECTION ON SDM ISSUE.

7/14/88 - TVA ISSUED LER ON SDM ISSUE.

,

7/16/88 - REVISION 4 TO ES-0.1 APPROVED WHICH PROVIDES GUIDANCE FOR

FULL POWER OPERATION THROUGH END OF THE CYCLE.

THIS

REVISION MAINTAINED INSTRUCTIONS FOR MANUAL BORAT10N.

8/31/88 - SUBMITTAL TO NRC DESCRIBING THE POSTTRIP C00LDOWN/ SHUTDOWN

MARGIN ISSUE AND CORRECTIVE ACTIONS.

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CORRECTIVE ACTIONS

1.

COMPLETED

A.

PROCEDURES REVISED TO REQUIRE MANUAL BORAT10N OF RCS

B.

REDUCTION IN BOP STEAM LEAKS

11.

Ifi PROGRESS

A.

REVISE ES 0.1 To BOUND UIC4

B.

MODIFICATIONS TO THE STEAM DUMP CONTROL SYSTEM -

PRESSURE MODE

C.

MANUAL CONTROL OF AFW AND OPERATOR TRAINING

D.

ENHANCEMENT OF POSTTRIP REVIEW PROCEDURES

.

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CONCLUSIONS

1.

OPERATED WITHIN TECHNICAL SPECIFICATIONS

!!.

MANUAL B0 RATION IN RESPONSE TO POSTTRIP C00LDOWNS 15

CONSISTENT WITH TECHNICAL SPECIFICATIONS

111.

POSTTRIP REVIEWS ENSURES EVALUATION OF PLANT RESPONSES

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Enclosure 3

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SEQUOYAH UNIT 1 RESTART

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PREPARATIONS FOR NODE 4

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Surveillance Instructions are critics', path

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Work Requests support testin5 and plant restoration

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Modifications are essentially complete - Lack PMTs

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Document closeout follows testing

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Systems are 94% under oper.itional control

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Mode 4 - week of 09/19/88

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PREPARATI0WS FOR MODE 3

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Surveillance Instructions are critical path

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Work Requests will not impact the schedule

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Modifications are not a problem

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Document closeout follows testing

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Mode 3 - week of 09/26/88

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PRRPARATIONS FOR MODE 2

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Heatup and Testing are critical path

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Work Requests should not impact the schedule

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Modifications are not a problem

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Dc:vment Closeout follows testing

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Mode 2 - week of 10/03/89

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PREPARATIONS FOR MODE 1 AND POWER ESCALATION

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4

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Zero power physics testing, power ascension testing and

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chemistry hold points are critical path

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Mode 1 - three days after mode 2

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100% power - 10 days after entering mode 1

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Enclosure 4

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IE3 88-05 SEQUOYAH (SQN) ESRIS 10 DAIE

FivevendorsprovidedWJMor?SIcaterialtoSQ:(Kellogg,

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NationalValve,CapitolPipeandSteelProducts,Dubose

Steel,andHub).Avaitingresponsestoinquiriesfrom11

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other vendors for caterial provided af ter construction.

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AllWJMandPSIcaterialrecordsretrivedthusfararefor

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flanges (orfice, blind,andweldneck).Sizesrangefrom

1to14incheswithatajoritybeing2inchesorless,

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Allfittingsidentifiedtodatearecarbonsteel

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(approxicately580).

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Carbonsteelfittingsareprohibitedfrcauseinsyste:s

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containingboricacid.

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WAcontinuingtoworkwithvendorstoidentifyWJSor?SI

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caterialdeliveredtoSQN.

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IECHNIC!i IVAISIION 0? f!. Mis

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lasedon!3SI316.5 criteria,flangesarenorcallydesigned

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tobethickerthanadjoiningpiping,whichresultsin

low-stressfactors.

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BeWJ)!flangeshavebeenshowntoteet!3SI316.5

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dizensionalrequire:ents.

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Be rinicum tensile values to date for WJ)l taterial is

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40,000 psi,whichgivesasafetyfactorofapproxicately6.

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>!astcaterialhasshowntensilestrengthgreaterthan

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70,000 Dsi (EGO test report), which gives a safet,y factor

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ofatleast10.

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SJ){Caterialhasbeenfoundacceptablef0! intended

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EDDlicati0n.

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LABORATORY TENSILE RESULTS

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Enclosure 5

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II.ICIs! CAL CA!CUI.AIION PROC?AM SIAIUS

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Allessentialelectricalcalculationsrequiredforunit1.

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restart have been revised.

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levisionstocalculations-detoaddresscreviously

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cTerified asseptions, address nonconservative or tnytrified

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cablelengths,addressD3VPdeficiencies,andincorocrate

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D3VPvalkdowndtta.

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redeneforunitIrestartwithstandardizedvendorQAsoftware

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ltageanalysis

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3 ranch technical cositica ?SI-l verificatica

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DISTRIBUTION FOP MEETING SUMMARY DATED _;

September 21, 1988

Facility:

Sequoyah Nuclear Plant, Units 1 and 2*

, Docket File-

'

NRC POR

Local PDR

Projects Reading

OSP Reading

'

J. Partlow

S. Richardson

S. Black

-

B. D. L1aw

J. Donohew

M. Simms

F. McCoy

R-!!

J. Rutberg

15-B-12

M. Branch

E. Goodwin

B. Pierson

ACRS (10)

GPA/PA

GPA/CA (u, Callahan) (5)***

16-G-19

F. Miraglia

12-G-16

E. Jordan

PNBB-3302

B. Grires

9-A-2

P. Gwynn

16-H-3

J. Scarborough

16-H-3

T. Elsasser

16-H-3

C. Ader

16-H-3

50N Rdg. File

cc:

Licensee /fpplicant & Service List

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