ML20129D471

Forwards Comments & Addl Info Re Util 850614 Responses to Concerns in Area of Seismic Equipment Qualification for Facility & FSAR Amend 20 to List of Items Concerning Seismic & Dynamic Equipment Qualification Needing Confirmation

ML20129D471
Person / Time
Site:	River Bend
Issue date:	07/09/1985
From:	Butler W Office of Nuclear Reactor Regulation
To:	William Cahill GULF STATES UTILITIES CO.
References
NUDOCS 8507160535
Download: ML20129D471 (6)

Text

,-

4 Docket No. 50-410 JUL9 lbos Mr. William J. Cahill, Jr.

Senior Vice President River Bend Nuclear Group Gulf States Utilities Company P.O. Box 2951 Beaumont, Texas 77704 Attention Nr. J. E. Booker

SUBJECT:

SEISMIC EQUIPMENT QUALIFICATION FOR RIVER BEND On June 14,.1985, you submitted responses to concerns in the area of seismic equipment qualification for River Bend. Enclosure 1 contains our coments and additional information needed to complete our review.

Enclosure 2 contains coments to FSAR Amendment 20 in the area of seismic and dynamic equipment qualification which need.to be addressed.

Enclosure 3 identified items in the area of seismic and dynamic equipment qualification for which confimation .needs to be provided. Confirmation should be provided for items 1, 2 and 3 prior to fuel load.

If you have any questions concerning the enclosure, please contact the Licensing Project flanager, Stephen Stern (301)-492-8349 or Mary F. Haughey' (301)-492-7897.

Sincerely, Walter R. Butler, Chief Licensing Branch flo. 2-Division of Licensing

Enclosure:

'As stated cc: Stephen Stern DISTRIBUTION

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Docket i;o. 50-410 14r. llilliam J. Cahill, Jr.

Senior Vice President River Bend i;uclear Group Gulf States Utilities Company P.O. Box 2951 Beaumont, Texas 77704 Attention Mr. J. E. Booker

SUBJECT:

SEISi1IC EQUIPl4EllT QUALIFICATION FOR RIVER BEliD On June 14, 1985, you submitted responses to concerns in the area of selsuic equipnient qualification for River Bend. Enclosure 1 contains our concents and additional infomation needed to complete our review.

Encicsure 2 contains comments to FSAR Anendment 20 in the area of seisnic and dynamic equipment qualification which need to be adcressed.

Enclosure 3 identified items in the area of seismic and dynamic eqaipment qualification for which confirmation needs to be provided. Confirmation should be provided for items 1, 2 and 3 prior to fuel load.

If you have any questions concerning the enclosure, please contact the Licensing Project 14dnager, Stephen Stern (301)-492-E349 or Mary F. Haughey (301)-492-7097.

Sincerely, Walter R. Butler, Chief Licensing Branch No. 2 Division of Licensing

Enclosure:

As stated cc: Stephen Stern

fir. Willian J. Cehill, Jr.

Gulf States Utilities Cen.pany hiver Beno Nuclear Plant cc:

Troy B. Conner, Jr., Esq. Ms. Lindt B. Watkins/hr. Steven Irving Conner and Uetterhahn Atterrey at Law 1747 Pu nsylvania Avenue, hW 555 Napoleon Street Uushington, D.C. 200LL Ectcr. Rcuce, Louisiana 70802 Mr. Willian J. Reed, Jr. Mr. David 7aloudek Director - Nuclear Licensing Nuclear Energy Division Gulf States Utilities Lcn.pany Louisiana Departrent of F. O. Ecx 2951 Environmental Quality beauntont, Texas 77704 P. O. Box 14690 Bdten Rouge, Louisiana 7089E Richard h. Troy, Ur., Esq.

Assister.t Attorney General in Charge Mr. J. David hcheill, III State of Louisiana Department of Justice hilliam G. Davis, Esq.

234 Loyola Avenue Cepartrent of Justice

- ficu Crieans, Louisiana 7011% Attorney General's Office 743A Perkins Road Resiaent Inspector Batcn hcuse, Louisiana 70808 F. C. Ecx 1051 St. Francisville, Louisitt,a 70775 H. Anne Plettinger 3456 Villa Rose Drive Gretchen R. Rothschild Baton Rouge, Lousiana 70806 Louisianians for Safe Energy, Inc.

1659 Glenmore Aver.ue Baton Rouse, Louisiane 70775 Jos.:es U. Pierce, Jr. , Esq.

P. O. Box 23571 Baten Rouge, Louisiana 70893 Regional Administrator, kegion IV U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011

Enclosure

• C0liliENTS AND ADDITIONAL INF0kMATI0li REQUIRED CONCERNING THE JUNE 14, 1985 SUEMITTAL ON SEISMIC EQUIPliEllT QUALIFICATION FOR RIVER BEllD.

1.. For components which are to be qualified prior to fuel lezd for which a JIO has been provided, the following information is needed:

a. Statenent that testing and/or analysis is complete.

b. Statement that the qualification reports have been reviewed for the RBS specific application and were found acceptable.

c. Statement that the qualification documentation is available for

- review.

d. Brief description of the basis for seisnic qualification (i.e. test,

'artlysis).

E. Provide confirmation that the in-vessel rack will not be used until the first refueling outage and that it will be qualified prior to its use.

Also provide location of in-vessel rack.

3. -125 Standby DC Control-Supply Panel Board Failure modes:

a. Knife type - need clarification / detail on why this is not a credible failure.

b. Switch loost . mounting support - need relative "g" values.

4. 150 lb.,1 inch valves,-containnient penetration process line seal air -

pressure valve actuators; similarity to other valves stated but not described. .Need detailed corppariscn.

Enclosure 2 Comments to FSAR Amendnent 20 in the area of seismic erd dynamic qualification of equipaent.

1. On Fage 3.98-34 under section 5.9.2.E.1.B it is stated that for equipntnt subjccted to hydrodynamic loacs a cut off frequency of 60 Hz is used. For hydrodynamic loads the cut cff frequency is generally considered to te 100 Hz, and this seems to be recognized as indicated on page 3.98-36a under sections 3.9.2.2.2.2.B. GSU shoulo confirm that equipment with r.atural <

frequencies between 60 Hz to 100 Hz that needs to be qualified for hydro-dynamic loads is qualified and acceptable.

2. On Page 3.9.B-36 under section 3.9.2.2.1.3B it is sinply stated that sufficient magnitude end number of SRV actuations expectec curing 40 years of plant operation was considered for fatigue evaluation. Basic assumptions regarding the numbers of actuations and the total number of cycles of

. stress used in the calculaticn of predicted usage factors shculd be clearly

. stated in the FSAR.

3. On Page 3.98-63 under section 3.9.3.2.1B it is stated that particulates that might pass through the suction side strainers will not affect the pump operability. licwever, no basis for this statement has been given.

GSU should provide in the FSAR the basis for this statement (i.e.,

operability of a similar pur.p has been demonstrated under similer con-ditions for the ECCS pumps).

4. On Page 3.9B-65 under section 3.9.3.2.2B it is stated that the RCIC punp/ turbine is rigid and is seismically qualified by analysis. The turbine governor that controls the speed may be susceptible to earthqucke related vibration, and under the earthquate related viberatory motion it could shut off the steam inlet, and thereby the ECCS pump itself. GSU should provide an explanation of how the seisnic effect on pump operability

~

through the turbine governor has been properly accounted for.

Enclosure 3

1. Upon conpletion of as-built pipir.g analysis for all pipe-mounted safety-relateo equipment, confirmation should be provided that the g-values usec for qualification of these equipment werc not icwer than the g-values obtained from the as-built piping enalysis.

2. The cualification of those pieces of equipn.ent which were originally qualified to meet IEEE Std 344-1971, should be identified and upgraded to meet the rec,uircr;erits of IEEE Std 344-1975 as applicable. Confirmation should be provided.

.5. Upon completion of the on-going qualification process, the applicant inust confirra that all safety-related equipirent have been qualified. If all safety-related equipnent is not cualified prior to fuel lead, GSU should provide the following, a) GSU must identify those itens of equipment necessary for low power operation (6 51) which will not be qualified during low power operation and provide justification for interim operation.

b) GSU must identify those items of equipment necessary for exceeding low power operation (')S*') which will not be qualified before exceecing low power operation and provide justification for interim operation.

c) GSU must identify those items of equipment necessary for 1st Refueling Outage but which will not be qualified and provide justification for interim operation.

4. Prior to exceeding low power operation (> 5'4) GSU must present results of mini-audit conducted per Nay 17,1985 f1RC letter to GSU, and RGB letters 21093, 21337.

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