ML20052G384

Forwards Util 820507 Followup Ltr Transmitting LER-82-004/01T-0.Certificate of Svc Encl.Related Correspondence

ML20052G384
Person / Time
Site:	Three Mile Island
Issue date:	05/13/1982
From:	Baxter T METROPOLITAN EDISON CO., SHAW, PITTMAN, POTTS & TROWBRIDGE
To:	Buck J, Edles G, Gotchy R NRC ATOMIC SAFETY & LICENSING APPEAL PANEL (ASLAP)
References
NUDOCS 8205180315
Download: ML20052G384 (4)

Text

.

.t SHAW, PITTMAN, PoTTs & TROWBRIDGE A PARTNERSMiP OF PROFESSIONAL CORPORATIONS C07tR ieOo M smccy. u.;w. " 9 g WASW N GTON. D. C. 20036 RAMSAY D POTTS P C. fMOMAS A. SAKTER P C. JOHN H. O'NEILL JR DAVID LAWRENCE MILLER STEUART L PITTMAN. P C. J AMES M. SURGER. P.C. I2023 822-1000 J AY A. E PSTIEN ANNE M. MRAUSKOPF GEORGE F. TROW 8 RIDGE. P C. SHELDON J. WEISEL P C. .. RAND L ALLEN FREDERICK L. KLEIN STEPHEN O. POTT 3 P C. JOHN A. McCULLOUGM. P C, - TIMOTHY S. Mc5 RIDE GOROON R. MANOFSKY GENALD CMARNOFF. P C. J. PATRsCK MICMEY. P C. ELISABETH M. PENDLETON JEFFREY S. GIANCOLA PMILLap D. DOSTWICK. P C. GEORGE P. MICHAELY. JR., e C- TEL ECOplER PAUL A. KAPLAN MANNAM E. M. LIESERM AN R. TIMOTMY M ANLON. P C J. TMOMAS SENMART. P C. 4 202l 822-1099 4. 822-H99 MARRY M. A I SA .FO N M GEORGE M, ROGERS. JR. P C. STEVEN L. MELTZER. P C. THOMAS M. McCORMICK M ARCIA R. NIRENSTEIN FRED A. LITTLE. P C. DEAil D. AULICK. P C. - WILLIAM P. BARR JUDITM A. SANDLER JOHN 3 RMINELANDER. P C. JOHN ENGEL P C. SUSAN M FREUND EDWARD D. YOUNG 183 Cit?UCE W. CMURCMILL P C. CH ARLES 3. TEMKIN. P.C. TELEX JOMN L. CARR. JR. RCBERT L. WILLMORE LEELIE A NBCMOLSON. JR., P C STEPMEN 8. MUTTLER. P C. PMILIP J. MARVEY WENDELIN A. WHITE M A4Tf N O MRALL. P C. WINTMROP N. BROWN. P.C. 8 M94 (SMAWLAW WSMI RosERT M. GORDON STANLEY M. BARG RICM ARD J. st ENDALL P.C. JAM ES 3. HAMLIN P.C. CAS.E "$MAWLAW** S ARBARA J. MORGEN MRISTI L LIMBO JAY E. SILDERG. P C. RANDAL 3. RELL P.C. BONNIE S. GOTTLIEB LESLIE K. SMITH GAEARA M. RDSSOTTI. P C. ROBERT E. ZAMLER - MOWARD M. SMAFFERM AN VIRGINIA S. RUTLEDGE C EORGE V. ALLEN. JR.. P C RICH ARD E. GALEN DEBORAM S SAUSER KATHERINE P. CHEEK FLED DRASNER. P C. ROBERT 3. ROSSINS WRITER S DIRECT DIAL NUMBCR SCOTT A. ANENBERG JANICE LEMRER-STEIN I R. MENLY WEWSTER. P C. STEVEN M. LUCAS CAMPBELL KILLEFER TRAVIS 7. BROWN. JR.

NATHANIEL P. BREED. JR.. P.C. DAVID M. RUBENSTE'N SETH M. MOOGASIAN GAIL E. CURREY M ARX AUGENBLICK. P C. LYNN WHITTLESEY WILSON 822-1090 5"c^ "ec "^ ave' a'ca^ao "- ao~'"^'

EENEST L SLAME. JR.. P.C. MAT 6AS F. TRAVICSO-DeAZ DELISSA A. RIDGWAY STEPHEN S. "MEIMANN CARLETON 5. JONES. P C. VICTORIA J. PERKINS MENNETM J. MAUTMAN May 13, 1982 Gary J. Edles, Esquire Dr. John H. Buck Chairman, Atomic Safety and Atomic Safety and Licensing Licensing Appeal Board Appeal Board

/ U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, D.C. 20555 Washington, D.C. 20555 Dr. Reginald L. Gotchy Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Commission Washington, D.C. 20555 In the Matter of Metropolitan Edison Company (Three Mile Island Nuclear Station, Unit No. 1)

Docket No. 50-289 (Restart)

Dear Administrative Judges Edles,

Buck and Gotchy:

Please find enclosed, for your information, Licensee's follow-up (letter , May 7., 1982, from H. D. Hukill to R. C.

Haynes) to Licensee Event Report No.82-004, which I trans-mitted to you by letter of April 22, 1982.

Sincerely, s2051803/

Tr~ .

t Thomas A. Baxter C

$h5 TAB /t3c / pI Encl.

1 LIC 5/13/82 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Appeal Board In the Matter of )

)

METROPOLITAN EDISON COMPANY ) Docket No. 50-289 SP estart)

(Three Mile Island Nuclear )

Station, Unit No. 1) )

CERTIFICATE OF SERVICE I hereby certify that a copy of Licensee's lette,r.to the Appeal Board with attachment was served this 13th day of May, 1982, by deposit in the United States mail, postage prepaid, addressed to the parties on the attached Service List.

~

Thomas A. Baxter

o .

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING APPEAL BOARD In the Matter of )_

)

METROPOLITAN EDISON COMPANY ) Docket No. 50-289

) (Restart)

(Three Mile Island Nuclear )

Station, Unit No. 1) .)

SERVICE LIST Gary J. Edles, Esquire James M. Cutchin, IV, Esquire CMi-n Office of the Executive Iegal Director Atcruic Safety and Licensing Appeal U.S. Nuclear Regulatory Cemi=sion Board ihmhington, D.C. 20555 U.S. Nuclear Regulatory Ccmaission Washington, D.C. 20555 Docketing and Service Section Office of the Secretary Dr. John H. Buck U.S. Nuclear Regulatory Cr=icsicn

/' Atcnu.c Safety and Licensing Appeal Washington, D.C.. 20555 Board Panel .

U.S. Nuclear Regulatory Cn-micsion John A. Ievin, Esquire Washington, D.C. 20555 Assistant Cbunsel Pennsylvania Public Utility Ccmnission Dr. Paginald L. Gotchy P.O. Box 3265 Atcmic Safety and Licensing Appeal R=n-isburg, Pennsylvania 17120 Board Panel -

U.S. Nuclear Regulatory Comnission Ibbert Adler, Esquim Washington, D.C. 20555 Assistant Attorney' General

. 505 Executive House Ivan W. Smith, Esquire *,

P.O. Box 2357 Chairnan Harrisburg, Pennsylvania 17120 Atcmic Safety and Licensing Board U.S. Nuclear Regulatory Comrission John E. Minnich Washingten, D.C. 20555 Chaiman, Dauphin County Board of Cv...issioners Dr. Walter H. Jorcan Dauphin Cotmty Courthouse Atric Safety and licensing Board Front and Market Streets Panel Harrisburg, Pennsylvania 17101 1 881 West Ou>_r Drive l Oak Pidge, Tennessee 37830 Walter W. Cchen, Esquire Office of Constrer Advocate l N 7;-d= W. Little 1425 Strawbery Square A:ric Safety and Licensing 3 card E=zrisbeg, Pen .sylvr.ia 17127 Pana' l 5000 Heritage Drive Jcrdan D. Cr.ninghan, Esquira l Faleigh, Scr-h Caroli .a 27612 2220 Nc: h Seccnd Stree:

Earisb=g, Pe.nsylvania 17110

.' ,y Ms. Inuise Bradford Joseph R. Gray, Esquire OII ALERr Office of the Exect1ive Legal Director 1011 Green Street U.S. Nuclear Regulatory Cc=rission Harrisbi=g, Pennsylvania 17102 Washington, D.C. 20555 Ellyn R. Weiss, Esycire Fv .cn & Waies -

1725 Dye Street, N.W. , Suite 506 Washington, D.C. 20006 Steven C. Sholly Unicn of Concerned Scien*ists 1346 Ccnnecticut Avenue, N.W. , Sui *a 1101 ,

Washington, D.C. 20036 Gail B. Phelps ANGRY 245 West Philadelphia Street York, Pennsylvania 17404 William S. Jordan, III, Esquire Ear:ron & Weiss 1725 Eye Street, N.W., Suite 506 Washington, D.C. 20006

// Robert Q. Pollard .

609 htntpalier Street Baltinore, Maryland 21218 .

~

Chauncey Kepford Judith H. Jo'.r.srud Envi. m e l Coalition on Nuclear Power 433 Orlando Avenue State College, Pennsylvania 16801

. Marvin I. leais 6504 Bradford Terrace Philadelphia, Pennsylvania 19149 Marjorie M. Aarodt R. D. 5 Ccatesville, Pennsylvania 19320 Theras J. Gerrine, Esquire Deputy Atro:ney General Divisicn of law - Rx:m 316 1100 Ray end Eculevard Neca-k, Nea Jersey 07102

ar l y.. .

l GPU Nuclear l

[RM Nuclear ' " o 8 "8o Middletown, Pennsylvania 17057 717-944-7621

, Writer's Direct Dial Number.

May 7, 1982 5211-82-102 Office of Inspection and Enforcement Attn: R. C. Haynes, Director Region 1 U. S. Nuclear Regulatory Co==1ssion-

~

631 Park Avenue King of Prussia, PA 19406

Dear Sir:

Three Mile Island Nuclear Station, Unit 1 (TMI-1)

Operating License No. DPR-50 Docket No. 50-289 LER 82-004/0lT-0 Attached please find the two week follow-up Licensee Event Report No.

- 82-004/01T-0 concerning TMI-1 Dresser pressurizer safety valves. This?

event is considered reportable per Technical Specification 6.9.2.A(9).

Your attention is drawn to our previous letters82-090 dated 4/14/82, and 82-076 dated 4/16/82. All future correspondence on this matter will be filed under NUREG 0737 Ite: II.D.l. Mr. R. Conte (NRC) was notified of our delay (fron 4/27/82) in subr.itting this report.

Sincerely, Tl 'h

. D. ..'hlli Directpr, TMI-l F.DE :k'JM: vj f cc: D. Haverkamp J. Stol:

R. DeYoung c/o USSRC Document Management Eranch u-f i '*k ace %: ear ,s a ta. e e sene a =2 : u: : es sys:e-

ri-m ' ,

• LICENSEE EVENT REPORT CONTROL STOCK: l 1

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6 (PLEASE PRINT oR TYPE ALL REoUIRED INFORMATioN) lo } 18 l5 l P l LICENSEE 7

A l T lCODE M l I l 141 l@l 15 0 l 0 l- l 0 lLICENSE 010 NUMBER l0l0l I010 l@l 4!LICENSE 25 26 Ill IITYPEl1 30l@lb7 call SEl@

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-l-0111 7 8 3$Re60l L )@l 015DOCK 61 l 0ETl NUMBER 010121819 65 l@l0 69 l4 l1 l3 le 12 EVENT DATE 74 l@l01412l9l812 75 REPORT DATE 80l@

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, EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

'lo t 2 l l k'hile'in long ter=, ordered shutdown, results of EPPl valve test results indicated 'l

, g o ;3 ; l a potential problem with 'DII-l Pressurizer code safety valves (Dresser model 31739A) 1 lOg4l l Tests were done as part of NUREG 0737 Item II.D.1. Public Health and Saferv is 'l, lo!5l l unaffected. Reported per Technical Specification 6.9.2A(9). ' );

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CODE CODE SUB00DE COM*0NENT CODE SUSCODE <.9 CODE

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9 10 11 12 13 1E 16 2C SE ovE NTI AL OCCUn o E NCE REPOmi REvtseOh EVE NT YE.AR REPOAT NO. COO! TYPE N O.

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,# 21 22 23 24 26 27 2E 25 3C 31 32 SHUTDOWN ATTACHUENT N' A D.4 PRluE Cous. COueONgNT ACTION FUTURE EFFECT TAKEN ACTION ON PLANT METMOD HOURS

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44 49 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l 3 l o l l Enveloping EPRI Valve tests have identified a need for evaluation of TMI-l saferv i

3 ;3j l valves under water discharge conditions. Further evaluation.

lanninc.schedulin0 I p ;;,tand engineering activities are in progress in acCOrdance with NUEEG 0737, Ite: II .D. l . l

, ,3i ]Long tern corrective action vill be reported in relationship te NUEEG 0737 prior to 1 l

i. 4 i 1 7/1/82.

se 7 s 5 s A:itiTv a v!THOO 08 ST AT U! %80WER CT 'ER STATU! dis 00VERY dis 00VERY DES:mi' TION 22

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• ERSONNEL Ex805UmES pUMEER TYPE DESCRIPTION -

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LICENSEE EVENT PIPORT l

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NARPATIVE REPORT TMI-1

.. LER 82-004 I. CURRENT ACTIVITIES AT THE TIME OF THE OCCUPJtENCE q . . .

TMI-1 was in.a long term cold shutdown condition by NRC Order dated

p~ July 2,1979.

~

A II. LEADING CIRCUMSTANCES r' ,

[~ As a sponsor of the EPRI Safety and Relief v lve a Test Program GPUN Z, closely monitored the activities of this test program developed to provide the basis for meeting the requirements of NURIG 0578 Item 2.1.2 f- and NUREG 0737sItem II.D.1. In April, 1982'EPRI T=st Program results E y r,

were formally submitted to NRC on behalf of the participating PWR ,

_ utilities. A separate letter dated April 16, 1982 (82-076) indicated areas of additional and plant specific evaluations to.be performed for

. TMI-1.

Ill. DESCRIPTION '

' Safety valve testing for the Dresser safety valves model (31739A), the type used rt TMI-1, were performed very late in the EPRI progra=. This-r u. testing was performed on both short inlet and long inlet configurations.

The long inlet . configuration includes a loop seal and represents the . .

THI-1 plant specific inlet. piping. TE" # '.

~

Long Inlet Configuration - Several stea= tests (drained loop seal) were performed at various ring settings te optimize valve performance (st.able with rated lift). Blowdown was increased to achieve rated lift. The ring settings established for the increased blow-down were used in the remaining long inlet configuration tests.

On two of the loop seal-steam (with water in the loop) tests the valve exhibited an instability during loop seal discharge, stabilized on stea= .and had a maximu= blowdown of 13.8%. The valve also exhibited te=porary instability during loop seal discharge in tne transition test and then stabilized on stea= and closed on water with 13.9%

blowdown. The valve had stable perfor=ance during the 650 F water test and had a 18.57.' blowdown. The valve opened and chattered during the 550 F water test. The test was terminated after the valve was manually opened to stop chatter and no data was collected. -

Upon valve disasse=bly, following the full series of tests, some galling was seen and several parts were damaged.

IV. PISULT/8'T EVENTS Since the pressurizer code safety valves were tested at a separate facility and no event at TMI-1 occurred, there was no threat to the health  !

and safety of the public. I I

e g

V. PREVIOUS EVENTS OF A SIMILAR NATURE None

.. VI. ROOT CAUSE

- Safety valves are in general designed for a single fluid medium discharge applications and the design of the valves is based on extrapolation of smaller valve designs to a large valve.

- The B&W specification for a pressurizer safety valve specified only 5 steam conditions for the valve. At the time when the TMI-1 valves were purchased it was-not specified that the pressurizer safety valv~es ,

would experience significant 2-phase transition and water discharge .

transients. After the accident at TMI-2, transition and water discharges were included as part of the Relief and Safety Valve testing in the NUREG 0578 requirements.

- The dynamics of the long inlet identified in the EPRI Test program - - d.Yc were not originally considered. The EPRI tests show, however, that the long inlet introduces dynanic forces which affect the valve '

performance.

IMMEDIATE CORRECTIVE ACTION  !

VII. .

We are evaluating the test results further including results applicable

/ to other safety valve inlet configurations. Currently, our initial evaluation has concluded the 20% blowdown is acceptable for TMI-1 in its present configuration. GPUN has initiated further evaluation, planning,

- scheduling and engineering activities associated with completion of '

the plant specific evaluations. _

VIII. LONG TERM CORRECTIVE ACTION The complete results of relief and safety valve testing are necessary for accurate analysis and assessment and to define potential plant modifications.

As discussed in our letter of April .16,1982 (82-076) our valve operability and discharge piping and support evaluations are underway to define a specific schedule which will be reported to you in a timely manner prior to July 1,1982 in relation to NUREG 0737, Item II.D.l.

IX. COMPONENT DATA Dresser model 31739A pressurizer safety valve (s).

, _ . __ _ . - ,