ML17284A432

Responds to IE Bulletin 88-004 Re Potential safety-related Pump Loss.Facility Has No safety-related Pumps W/Detrimental pump-to-pump Interaction.Min Flow Line Adequate as Addressed in Encl Rept

ML17284A432
Person / Time
Site:	Columbia
Issue date:	07/08/1988
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
G2-88-150, GO2-88-150, IEB-88-004, IEB-88-4, TAC-69992, NUDOCS 8807180324
Download: ML17284A432 (16)

Text

k ,-"kCCE1ZRATED D+R1BUTJON DEMONSTT1ON SYSTgg REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)I'I'ACCESSION NBR:8807180324 DOC.DATE: 88/07/08 NOTARIZED:

YES'OCKET FACIL:50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH.NAME AUTHOR AFFILIATION SORENSEN,G.C.

Washington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Responds to IE Bulletin 88-004 re potential safety-related pump loss.DISTRIBUTION CODE: IE11D COPIES RECEIVED:LTR ENCL SIZE: TITLE: Bulletin Response (50 DKT)NOTES: RECIPIENT ZD CODE/NAME PD5 LA SAMWORTH,R INTERNAL: AEOD/DOA AEOD/DSP/TPAB NRR/DEST/ADE 8H NRR/DEST/MEB 9H NRR/DOEA/GCB 11 NRR~~hSJ LRB12 LE 02 GN5 FILE Ol EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1*1 1 1 1 1.1 1 1 1 RECIPIENT ID CODE/NAME PD5 PD AEOD/DSP NRR RIVENBARK,G NRR/DEST/ADS 7E NRR/DOEA/EAB ll NRR/DREP/EPB 10'UDOCS-ABSTRACT RES/DE/EIB NRC PDR COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 h j h TOTAL NUMBER OF COPIES REQUIRED: LTTR 21 ENCL 20

WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O.Box 968~3000 George Washington Way~Richland, Washington 99352 Docket No.50-397 July 8, 1988 G02-88-150 U.S.Nuclear Regulatory Commission Attn: Document Control Desk Mail Station Pl-137 Washington, D.C.20555 Gentlemen:

Reference:

NUCLEAR PLANT NO.2 OPERATING LICENSE NPF-21 RESPONSE TO IEB 88-04,"POTENTIAL SAFETY RELATED PUMP LOSS" Letter, BWROG-8836, D.N.Grace (BWR Owners Group Chairman)to US NRC, same subject, dated July 5, 1988 The subject bulletin requested all licensees to investigate and correct as appli-cable two minimum flow safety related pump design concerns: dead heading due to pump-to-pump interaction and the adequacy of installed minimum flow capacity for a single pump in operation.

With regard to the first concern WNP-2 has no safety related pumps with detrimental pump-to-pump interaction.

The second concern, minimum flow line adequacy, is addressed in the attached report.The attached commits to providing additional information on this concern within 75 days of this response.The Supply System is a participant in the BWR Owners Group and as such endorses the referenced letter submitted by that group to respond generically to the bulletin.The attached report provides additional information on plant specifics detailing both short and long term action and schedule, and endorses the justifi-cation for continued operation supplied in the reference by the BWR Owners Group.Should you have any questions, please contaCt Mr..A.G.Hosier, Manager, WNP-2 Licensing' Very truly yours, G.C.rensen, Manager Regulatory Programs PLP/bk cc: JB Martin-NRC RV NS Reynolds-BCP8R RB Samworth-NRC DL Williams-BPA/399 NRC Site Inspector-901A 8807i80324 880708 PDR ADQCK 05000397 8 PMl t STATE OF WASHINGTON)

)COUNTY OF BENTON)

Subject:

I, G.C.Sorensen, being duly sworn, subscribe to and say that I am the Manager, Regulatory Programs for the WASHINGTON.

PUBLIC POWER SUPPLY SYSTEM, the applicant herein;that I have full authority to execute this oath;that I have reviewed the foregoing; and that to the best of my knowledge, information and belief the statements made in it are true.DATE4/g~Z , 1988 G.C.Soyensen, Manager Regulat4ry Programs On this day personally appeared before me G.C.Sorensen to me known to be the individual who executed the foregoing instrument and acknowledged that he signed the same as his free act and deed for the uses and purposes herein mentioned.

GIVEN under my hand and seal this day of 1988.otary u)c)n a d or the STA E OF WASHINGTON Residing

EVALUATION OF POTENTIAL SAFETY RELATED PUMP LOSS: IEB 88-04 1.Safet Rel ated Pum Evaluati on Table 1 lists 83 pumps at WNP-2 which are considered safety related (Table 1).Of these pumps, 38 are centrifugal pumps which were specifically evaluated for problems related to pump-to-pump interaction and minimum flow operation.

The remaining pumps are positive displacement pumps.The results of the WNP-2 evaluation are presented in Table 2.In summary, no pump or piping configurations were found which could lead to detrimental pump-to-pump interactions.

From the Table 2 list, 24 of the 38 pumps were found to be of no concern and 14 pumps were found which could experience short periods of dead head and/or minimum flow operation during normal pump start up and routine testing.Specific discussion on these pumps is provided below.2.Short and Lon Term Evaluation Pro ram Of the 14 pumps identified from Table 2, six have been evaluated as not having or not susceptible to concerns related to inadequate minimum flow capacity.Records of these evaluations will be maintained per the guidance of IEB 88-04.The remaining eight, subject to continued evaluation are: o Reactor Heat Removal Pumps 2A, 2B, 8 2C o High Pressure Core Spray Pump 1 o Low Pressure Cor e Spray Pump 1 o Standby Service Water Pump 1A, 8 1B o Reactor Core Isolation Cooling Pump 1 A description of the continuing evaluation for these pumps is provided below.Prior to the issuance of IEB 88-04 all ECCS pump operating procedures were modified to include caution statements to the operator to ensure that the minimum flow valves opened upon starting the pump, and that the amount of time the pump is operated on minimum flow is minimized.

These changes adequately address, the need for short term modifications to operating procedures as required in the bulletin.The evaluation programs, short and long term, are as follows:

A.Short Term Program l.Authorize the pump manufacturers to reevaluate pump parameters and determine if.current low and minimum flow operating parameters should be revised.2.Perform base line vibration testing with temporary equipment at low and minimum flow operations.

Analyze the data and determine the rotordynamic effects of the observed vibrations and develop a data base.3.Based on I and 2,'etermine if any operating or hardware modifica-tions are required, in the interim, prior to completion of the long term program, These short term actions cannot be completed until the pump manufac-turer's evaluations are completed, necessitating a follow-on report to be submitted within 75 days of this response.BE Long Term Program 1.Complete data collection and analysis confirming the results of the short term program.2.Based on vendor recommendations and the results of the short term program, future test requirements will be defined and incorporated into the current periodic inspections of the ISI program.Data exchange through the BHROG wil-1 enhance the historical data base development and is an integral component of this plan.3.The results of the shor t term bases development could lead to hardware and operating mode changes.Among the potential hardware changes are piping modifications, pump internal modifications to adjust A and 8 gaps to reduce hydraulic instabilities, or use of adjustable speed drives.The long term program and data base development will pr ovide feedback as to the adequacy of any short term modifications and identify any additional areas requiring modification.

4.The interim long term program which embodies the requirements for 10 year inspections per the ASME code will remain in effect until the necessity for modification is determined from the results of this program.

3.Justification For Continued 0 eration (JCO)The Supply System endorses the JCO provided in the referenced BWROG sub-mittal and r eiterates the following in support of continued operation:

A.The common minimum flow line design shared by two or more pumps does not exist in any safety related pump design at WNP-2.B.The ECCS pumps at WNP-2 were procured to the highest industry stan-dards.C.The reliability and history of the ECCS pumps at WNP-2 have been demon-strated to be equal to that addressed in the BWROG JCO and therefore encompassed by that response.

TABLE 1 VNP2 PUMPS IMPORTANT TO SAFETY TAG HO, FUNCTION SAF REI PUMP TYPE MANUFACTURER IEB 88-84 PUMP COMMENTS CCH-P-IA CCH-P-1B COOLING VATER FOR CONTROI ROOH CHILf ERS COOLING VATER FOR CONTROL ROOH CHILLERS YES CEHTRIPUGAL YES CENTRIFUGAL GOULD GOUI D NO CMS-P-I/13 SPARED IH PLACS CMS-P-I/14 SPARED IN PLACE CMS-P-2/13 SPARED IN PLACE CMS"P-2/14 SPARBD Ilf PLACE CMS-P-1381 CONTAINMEHT ATMOSHERE SANPLE PUMP CMS-P-14SI COlfTAIHMENT ATNOSHERS SAHPf E PUMP NO POSITIVE DISPI ACEMEHT HETAI BEf f OVS NO POSITIVE DISPLACEMENT METAL BELLOVS NO POSITIVE DISPI ACEMEHT METAI BELLOVS NO POSITIVB DISPLACEMENT METAL BE!,LOVS YES POSITIVE DISPIACEMEHT AIR DIMENSIONS IHC YES POSITIVE DISPLACEMENT AIR DIMEHSIONS INC NO CLASS I PU!{P SPARED IH PIACE POR FUTURE USE CLASS I PUMP SPARED IH PLACE FOR FUTURE U CI ASS I PUMP SPARED IN PLACS POR PUTURE USE CLASS I PUMP SPARBD IN PLACS POR FUTURE USE CRD-P-IA CRD-P-1B CONTROL ROD DRIVE VATER PUMP CONTROL ROD DRIVS VATER PUl!P DIESEL EHGIHB CIRCULATING JACKET COOLING VATER UNION HO CENTRIPUGAL NO CEN'TRIPUGAL YES CSHTRIPUGAL GM-EHD.DCV-P-IA2 DCV-P-IAl DCV-P-IBI DCV-P-1B2 DCV-P-IC DCV-P-2AI GH-EMD YES CEHTRIPUGAL DIESEl, ENGIHE CIRCUf,ATING JACKET COOLING HATER GM-EHD DIESEL ENGINE CIRCULATING JACKET COOLING VATBR YBS CENTRIFUGAL GH-EMD GM-EHD YES CEHTRIPUGAL YBS CEHTRIPUGAL YES CEHTRIPUGhf YES CENTRIFUGAL YES CEHTRIFUGAL YES CENTRIFUGAL DIBSEL EHGIHB CIRCULATING JACKBT COOLING VATER DIESEf EHGIHE CIRCULATING JACKET COOLING VATER GM"EMD DCV-P-2A2.DIESEI ENGINE CIRCUI ATIHG JACKET COOLIHG VATER GM-EHD DCV-P-2B1 DCV.P-2B2 DCV-P-2C DLO-P-Il DLO-P-IA1 DLO.P-IA2 GM-ElfD DIESBL ENGIHE CIRCULATIHG JACKET COOLING VATER DIESEf, ENGINE CIRCUf ATING JACKST COOLING VATER DIESEL ENGINE CIRCULATING JACKET COOLING VATER EHERG.DIESEL BEGINS OIL DRIVE PUHP EMERG, DISSEI ENGIHE OIL DRIVE PUHP EMERG.DIESBf ENGINE OIL DRIVE PUMP GN-EHD GH-EMD YES POSITIVE DISPLACEMENT GM-EMD YES POSITIVE DISPLACEMENT GM-EMD YES POSITIVE DISPLACEMENT GM-EHD DIESEL BEGINS CIRCULATING JACKET COOLING VATER YES CENTRIFUGAL YES YES YES YES YES YES-YES YES YES YES HO TABLE I VHP2 PUHPS IMPORTANT TO SAFETY TAG NO.FUHCTION SAF REf PUMP TYPE MANUFACTURER IEB 88-84 PUMP COMMENTS DLO-P-181 DLO-P-182 DLO-P-2A1 DLO-P-2A2 DLO-P-2BI DLO-P-282 DLO-P-3A1 DLO-P-3A2 DLO-P-3A2 DLO-P-381 DLO-P-382 DLO-P-4A1 DLO-P-4A2 DLO-P-481 DLO-P-4B2 DLO-P-5A1 DLO-P-5A2 DLO-P-581 DLO-P-5B2 DLO-P-6 DLO-P-7 DLO-P-8 DLO-P-9 EHERG, DIESEl ENGINE OIL DRIVB PUHP EHERG.DIESEL EHGINE OIL DRIVE PUMP EMERG.DIESEL EHGIHE Olf DRIVE PUMP EMERG.DIESEI BHGIHE OIL DRIVE PUHP ENERG.DIESEL EHGINE OIL DRIVE PUMP EMERG.DIESEL EHGIHE OIL DRIVE PUMP EMERG.DIESEf, ENGIHE Oll, DRIVB PUHP EMERG.DIESEL ENGINE Olf DRIVE PUMP EMERG.DIESEf, ENGINE OIL DRIVE PUMP ENERG.DIESEL, ENGINE Off, DRIVE PUHP EMERG.DIESEI ENGINE Oll DRIVE PUNP BHERG.DIESEL ENGINE Olf DRIVE PUHP ENERG.DIESEL EHGIHE OIL DRIVE PUMP EHBRG.DIESEL ENGINE OIL DRIVE PUHP EHERG.DIBSBl ENGINE OIL DRIVE PUMP BHERG.DIESEL ENGINE Olf DRIVE PUMP EHERG.DIESEf BNGIHE OIL DRIVE PUNP EHERG.DIBSEf BHGINE OIL DRIVE PUHP EHERG.DIESEL BNGIlfE OIL DRIVE PUHP EHERG.DIESEf BNGIHE OIL DRIVE PUHP EHERG.DIESBL EHGINE OIL DRIVE PUNP EMERG.DIBSEf ENGINE OIL DRIVE PUMP EHERG.DIESBL EHGIHE OIL DRIVE PUMP YES POSITIVE DISPLACEMENT GM-EMD YES POSITIVE DISP!,ACEMEHT GM-EMD YES POSITIVB DISPLACEHENT VIKIHG YES POSITIVE DISPLACENENT VIKING YES POSITIVE DISPI ACEMENT VIKING YES POSITIVE DISPl ACEHEHT VIKIHG YES POSITIVE DISPLACEMENT VIKING YES POSITIVE DISPI ACEHEHT VIKING YES POSITIVE POSITIVE DISPf ACEMENT VIKING DISPI,ACEHENT VIKING YES POSITIVE DISPLACEMEHT VIKING YES POSITIVE DISPLACEHENT GM-EMD YES POSITIVE DISPLACEMEHT GM-EHD YES POSITIVE DISPLACENEHT GM-EMD YES POSITIVE DISPLACEMENT GM-END YES POSITIVE DISPLACEMENT GH-EHD YES POSITIVE DISPLACEMEHT GH-EMD YES POSITIVE DISPLACEMENT GM-EMD YES POSITIVE DISPf ACBMENT GM-EHD YES POSITIVE DISPLACEMEHT VIKING YES POSITIVE DISPf ACEMENT ALLISON YES POSITIVE DISPLACEHENT ALLISON YES POSITIVE DISPLACEMENT GM-EMD NO HO NO HO NO HO HO TABLE 1 VNP2 PUMPS IMPORTAHT IO SAPETY TAG HO.FUNCTION SAF REK PUHP TYPE MANUFACTURER IEB 88-84 PUHP COMHENTS DO-P-IA DO-P-IB DO-P-2 DO-P-3hl 00-P-3A2 DO-P-3BI DO-P-3B2 DO-P-4AI DO-P-4A2 DO-P-4BI DO-P-4B2 DO-P-5 DO-P-6 PPC-P-1h PPC-P-1S SPCS-P-1 BPCS-P-2 HPCS-P-3 LPCS-P-1 LPCS-P-2 RCIC-P-1 RCIC-P-2 RCIC-P-3 DIESEL FUEL TRANSPBR PUMP DIESEf FUBI TRANSFER PUMP DIESEK FUEK TRAHSFER PUMP DIBSBL ENGIHE FUEL PUHP DIESEL ENGINE PUEf PUMP DIESEL ENGINB PUEK PUHP DIESEK ENGINE PURL PUHP DIESEK, EHGINE FUNK, PUMP DIESEK, ENGINE PUEI, PUMP DIESBI ENGINE PURL PUMP DIESEf BNGINE FUEL PUHP DIBSEL EHGINE PUEL PUMP DIESEf, ENGINE PUEL PUHP FUEL POOL COOLING VA'TER SUPPLY PUMP PUEI, POOL COOLING VATBR SUPPLY PUHP HIGH PRESSURB BHERGENCY HAKEUP TO REACTOR BPCS DIESEL SERVICE VATER PUHP HPCS KEEP FILL SISTBH PU!KP LOV PRESSURE EMERGBNCI HAKEUP TO REACTOR LPCS KEBP PILL SISTEH PUMP MAKEUP TO REACTOR DURING ISOLATION EVENTS GLAND CONDEHSBR VACUUH PUMP RCIC KEEP PILL SYSTEM PUMP YES CENTRIFUGAL YES CEHTRIFUGAI YES CEHTRIPUGAL CRANE-DEMING CRANE-DEMING CRANE-DEHING IES CENTRIFUGAL IES CEHTRIFUGAf YES CENTRIFUGAL IES CEH'IRIPUGAf YBS CENTRIFUGAL YES CENTRIPUGAL YES CENTRIPUGAK NO CEHTRIFUGAL NO CENTRIFUGAL HO CENTRIPllGAL VORTRIHGTOH VOR'THINGTON IHGERSOLL-RAND PACIPIC CRANE-DEHIHG INGERSOLL-RAND CRANE-DEMING BINGHAH-VILK AMET NASH CRANE-OEMING YES POSITIVE DISPLACEMENT VIKING YES POSITIVE DISPLACEMENT VIKIHG YES POSITIVE DISPLACEMENT VIKING YES POSITIVE DISPLACEMENT VIKING YES POSITIVE DISPI ACBMENT GH-EMD YES POSITIVE DISPLACENEHT GM-EHD YES POSITIVE DISPLACEMENT GM"EHD YES POSITIVE DISPf ACEHEHT GH-EHD YES POSITIVE DISPLACEMEHT GH-EMD YES POSITIVE DISPLACEMEHT VIKING YES YES YES YES YES YES IES YES IES YES YES YES IES IBS YES YES TABLE 1 VNP2 PUMPS IMPORTANT TO SAFETY TAG NO.FUNCTION SAF REL PUMP TYPE MANUFACTUPER IEB 88-84 PUMP COMMEHTS RCIC-P-I RCIC-P-5 RFV-P-1A RFV-P-1B RHR-P-2A RHR-P-28 RHR-P-2C RRR-P-3 RRC-P-1A RRC-P-IB SLC-P-IA SLC-P-18 SV-P-1A S'lf-P-18 GLAHD CONDEHSER CONDEHSATE PUHP TURBINE OIL PUMP.FEEDVATER PUMP FEEDVATER PUMP LOV PRESURE EMERGENCY MAKEUP TO REACTOR LOV PRESURE EMERGENCY MAKEUP TO REACTOR LOV PRESURE EMERGEHCY MAKEUP TO REACTOR RHR KEEP FILL SYSTEH PUMP REACTOR RECIRCULATION PUMP REACTOR RECIRCUf ATIOH PUMP STANDBY LIQUID COHTROL INJECTION PUHP STANDBY f IQUID COHYROL INJECTION PUMP EHERGENCY SERVICE VATER SYSTEM PUMP EHERGEHCY SERVICE VATER SYSTEH PUMP NO CENTRIFUGAL HASH HO CENTRIFUGAL NO CENTRIFUGAL YES CEHTRIFUGAL YES CENTRIFUGAf YES CENTRIFUGAL YES CEHTRIFUGAL YES CEHTRIFUGAL YES CEHTRIFUGAI INGERSOLL-RAND INGERSOIL-RAND INGERSOLL-RAND IHGERSOLI-RAND INGERSOLL-RAND CRANE-DEMING BIHGHAM-VILLAMET BINGHAM-Vflf AMET NO POSTIVE DISPLACEMENT UHION HO POSTIVE DISPIACEMENT UNION YES CEHTRIFUGAL YES CEHTRIFUGAL INGERSOLL-RAND INGERSOLL-RAND HO POSITIVE DISPLACEMENT TUTHILI NO YES YES YES YES YES YES HO YES YES IAILI 2 rvxrs EVALUATED roa taa le Ii IAC Io.IUNCIios sAF RIL ever IIFE bit fiov toss Icsf 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