ML19301D257

Final Deficiency Rept CDR 84-00-19 Re Main Steam Safety Valve Ring Setting.Initially Reported on 841221.Crosby Valve & Gage Co Adjusted Settings to -25 Notches for Lower & +25 Notches for Upper Rings

ML19301D257
Person / Time
Site:	Seabrook
Issue date:	08/27/1985
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
CDR-84--19, CDR-84-00-19, SBN-863, SBN-86300-19, NUDOCS 8509250143
Download: ML19301D257 (2)

Text

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R. DeLoach F. Sabadini Public SOM:e of New Hernpatte k. Derrickson A. Shepard J. DeVincentis R. Sweeney New Hamps.hlre Yankee DMaloft August 27. 1965T Feigenbaum T.F. Q2.I.2 C. Gran: G. Thomas SEN- 863 K. Hall H. Tracy T.T. Q2.2.2 R. Harrison J. Tribble D. Hunter UEEC 6 h (SB-19770' W. Johnson M. Wiley G. Kingston ASLB United States Nuclear Regulatory Commission G. F. Mcdonald 10CFR50.SS(e)Fi)e Region 1 M. McKenna J. Allen 631 Park Avenue B. Middleton INPO King of Prussia, PA 19406 D. Moody NRC Subject file Attention: Mr. Richard W. Starostecki, Director Division of Project and Resident Programs

References:

(a) Construct ion Fe rmi t s CPPR-135 and CPPR-13d , Docket Nos . 50-44 3 a nd 50-44 4 (b) Telecon of December 21, 1984, A. L. Legendre. Jr.

(YAEC) t o J. Grant (Region I)

(c) KHY Letter SEN-751 dated January 17, 19 6 5, John DeVincentis to R. W. Starostecki, NRC Region I (d) NKY Letter SEN-785 dated April 6,1985, Jchn DeVincentis to R. W. Starosterkl Subj e ct : Final 10CFR50.55(c) Report , " Main Stean Safety Velve Ring Set ting Deficiency," (CDR'84-00-19),

Dear Sir:

In References (c) and (d), we filed intetic 10CFR50.55(e) reportn re-garding a ring setting deficiency f or the main steam saf ety valves. The valves were sent to Wyle Labosatories f or testing f or determination of the proper ring settings. The tests were :ompleted and the results are conteined in Wyle Laboratorico Report No. 47787-01 dated July 12, 1965.

The objectives of the testa vere to:

1. De t ermi ne if the "a s-s hipp ed" ring s et tings of the v alve s woul d allow the requirec disc travel with minimum tailpipe backpressure.

2. De t e rmi ne the ef f ects on the valve disc travel f or a range of backpressures between 180 and 390 psig.

The result s of the "as-s hipped" ring s et ting t es ts indicated that the valves could not ach.teve the required disc travel with 31 steam accunulation a: mi ni me. ;ailpipe pressures of 15-20 psig.

QnsenD

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United States Nuclear Regulatory Commission Attention: Mr. Richard W. Staroste:ki Fage 2 Daring the test, the upper (guide) ring setting was adjusted f rom +155 notches to O and +25 notches, and full required disc travel was achieved at 3% steam accumulation under the f ull range of tailpa pe backpressure tested.

As a result of these test, we have agreed with Crosby, the valve aanu-facturer, that the opticus ring settings for the Seabrook saf n steam saf ety valves shall be -25 not ches for the lover (norrie) ri'ng (original setting) and +25 notchee f or the upper (guide) ring. The corrections were completed by a Crosby service representative et the Wyle f acility prior to returning the velves to the Seabrook Site.

This is our fine) report on this subject.

Very truly your ,

vm I n DeVincentio, Director

/

vEngineering and Licensing ec: Atomic Saf ety and Licensing Board Service List riirector, Of fice of Inspection and Enf orcement U. S. Nuclear Regulatory Cousission Wash.ngton, DC 20555

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6 .

W1111ae S. Jordan, III Donald E. Chick 7ovn Kanager Diane Curran Town of Exeter Ma rsen, Veiss & Jordan 20001 S. Street, N.W. 10 Tront Street Exeter, Nd 03833 Suite 430 We shing ton, D.C. 20009 Brentwood Board of Selectmen RED Dalton Road Ro be rt G. Perlis Brentwood, NH 03833 Of fice of the Executive Legal Director U.S. Nuclear Regulatory Commission Richard E. Sullivan, Mayor Wa s hingt on, DC 20555 City Hall Robert A. Backus, Esquire Newburyport, MA 01950 116 Lovell Street Calvin A. Canney P.O. Box 516 City Manager Manc he st e r, NH 03105 City Hall Philip Ahrens, Esq aire 126 Dar!<1 Street Aasistant Attorney General Ports =:sth, NH 03601 Augusta , ME 04333 Dana Bisbee, Esquire Assistant Attorney General Mr. .'ohn B. Tanzer Office of the Attorney General Dest,isted Representative of 206 State house Annex r he 'i v. .) of Hacpton Concord, NH 03301 3 Morningside Drive Harn; ton, NH 03642 Anne Verge, Chairperson Board of Select =en Ro berta C. Pevear Town Hall Lesignated Representative of South Rampton, NH 03827 the Town of haspt sn Falls Drinkwater Road Patrick J. McKeon Haupton Talls, NH 03644 Selectcen's Office 10 Central Road Mrs. Sandra Gavutis Rye, NH 03670 Designated Representative of the Town of Kensizgton Carole F. Kagan, Esquire RFD 1 Ato:1c Safety and Licensirq Ecard Fanel T.a s '. Vf r.g s t on , NE 03627 U.S. Nuclear hegulatory Com:issicn W.shi ngton, DC 20555 Ju Ann Shotwell, Esquire Assist ant Attorney General Mr. Ant,' Mac hi ros Envi ronmental Protec tion Bureau Chairman of the Board of Selectmen Department cf the Attorney General Tovn of Newbury one Ashburton Place,19th Floor Newbury, MA 01950 Boston, MA 02108 Town Manager's Office Senator Gordon J. Humphrey Town Hall - Triend Street U.b. Seaste Amesbury, KA 01923 Esshington, DC 20510 (ATTN: Tom Bursek) Senator Cordon J. Humphrey 1 Pillsbury St ree t Diana P. Randall Concord, NH 03301 70 Collins Street (AT7N: Herb Boynton)

Seabrook, NH 03874