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)

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- "kCCE1ZRATED D+R1BUTJON DEMONSTT1ON

, SYSTgg REGULATORY I

INFORMATION DISTRIBUTION SYSTEM (RIDS)

'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 COPIES RECIPIENT COPIES ZD CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 0 PD5 PD 1 1 SAMWORTH,R 1 1 h INTERNAL: AEOD/DOA 1 1 AEOD/DSP 1 1 AEOD/DSP/TPAB 1 1 NRR RIVENBARK,G 1 1 NRR/DEST/ADS 7E NRR/DEST/ADE 8H NRR/DEST/MEB 9H NRR/DOEA/GCB 11 1

1 1

1 1

1 NRR/DOEA/EAB NRR/DREP/EPB 10 ll 1 1

1 1

1 1

• 1 NRR~~ hSJ LRB12 1 'UDOCS-ABSTRACT 1 1 LE 02 1 1 RES/DE/EIB 1 1 GN5 FILE Ol 1 1 EXTERNAL: LPDR .1 1 NRC PDR 1 1 NSIC 1 1 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 July 8, 1988 G02-88-150 Docket No. 50-397 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station Pl-137 Washington, D.C. 20555 Gentlemen:

Subject:

NUCLEAR PLANT NO. 2 OPERATING LICENSE NPF-21 RESPONSE TO IEB 88-04, "POTENTIAL SAFETY RELATED PUMP LOSS"

Reference:

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

STATE OF WASHINGTON)

Subject:

)

COUNTY OF BENTON )

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 t results of the shor 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 COOLING VATER FOR CONTROI ROOH CHILf ERS YES CEHTRIPUGAL GOULD CCH-P-1B COOLING VATER FOR CONTROL ROOH CHILLERS YES CENTRIFUGAL GOUI D NO CMS-P-I/13 SPARED IH PLACS NO POSITIVE DISPI ACEMEHT HETAI BEf f OVS CLASS I PU!{P SPARED IH PIACE POR FUTURE USE CMS-P-I/14 SPARED IN PLACE NO POSITIVE DISPLACEMENT METAL BELLOVS CLASS I PUMP SPARED IH PLACE FOR FUTURE U CMS-P-2/13 SPARED IN PLACE NO POSITIVE DISPI ACEMEHT METAI BELLOVS CI ASS I PUMP SPARED IN PLACS POR PUTURE USE CMS"P-2/14 SPARBD Ilf PLACE NO POSITIVB DISPLACEMENT METAL BE!,LOVS CLASS I PUMP SPARBD IN PLACS POR FUTURE USE CMS-P-1381 CONTAINMEHT ATMOSHERE SANPLE PUMP YES POSITIVE DISPIACEMEHT AIR DIMENSIONS IHC CMS-P-14SI COlfTAIHMENT ATNOSHERS SAHPf E PUMP YES POSITIVE DISPLACEMENT AIR DIMEHSIONS INC NO CRD-P-IA CONTROL ROD DRIVE VATER PUMP HO CENTRIPUGAL UNION CRD-P-1B CONTROL ROD DRIVS VATER PUl!P NO CEN'TRIPUGAL YES

. DCV-P-IA2 DIESEL EHGIHB CIRCULATING JACKET COOLING VATER YES CSHTRIPUGAL GM-EHD DCV-P-IAl DIESEL BEGINS CIRCULATING JACKET COOLING VATER YES CENTRIFUGAL GH-EMD YES DCV-P-IBI DIESEl, ENGIHE CIRCUf,ATING JACKET COOLING HATER YES CEHTRIPUGAL GM-EHD YES DCV-P-1B2 DIESEL ENGINE CIRCULATING JACKET COOLING VATBR YBS CENTRIFUGAL GH-EMD YES DCV-P-IC DIBSEL EHGIHB CIRCULATING JACKBT COOLING VATER YES CEHTRIPUGAL GM-EHD YES DCV-P-2AI DIESEf EHGIHE CIRCULATING JACKET COOLING VATER YBS CEHTRIPUGAL GM"EMD YES-DCV-P-2A2 . DIESEI ENGINE CIRCUI ATIHG JACKET COOLIHG VATER YES CEHTRIPUGhf GM-EHD YES DCV-P-2B1 DIESBL ENGIHE CIRCULATIHG JACKET COOLING VATER YES CENTRIFUGAL GM-ElfD YES DCV.P-2B2 DIESEf, ENGINE CIRCUf ATING JACKST COOLING VATER YES CEHTRIFUGAL GN-EHD YES DCV-P-2C DIESEL ENGINE CIRCULATING JACKET COOLING VATER YES CENTRIFUGAL GH-EMD YES DLO-P-Il EHERG. DIESEL BEGINS OIL DRIVE PUHP YES POSITIVE DISPLACEMENT GM-EMD DLO-P-IA1 EMERG, DISSEI ENGIHE OIL DRIVE PUHP YES POSITIVE DISPLACEMENT GM-EMD HO DLO.P-IA2 EMERG. DIESBf ENGINE OIL DRIVE PUMP YES POSITIVE DISPLACEMENT GM-EHD

TABLE I VHP2 PUHPS IMPORTANT TO SAFETY TAG NO. FUHCTION SAF REf PUMP TYPE MANUFACTURER IEB 88-84 PUMP COMMENTS DLO-P-181 EHERG, DIESEl ENGINE OIL DRIVB PUHP YES POSITIVE DISPLACEMENT GM-EMD NO DLO-P-182 EHERG. DIESEL EHGINE OIL DRIVE PUMP YES POSITIVE DISP!,ACEMEHT GM-EMD DLO-P-2A1 EMERG. DIESEL EHGIHE Olf DRIVE PUMP YES POSITIVB DISPLACEHENT VIKIHG DLO-P-2A2 EMERG. DIESEI BHGIHE OIL DRIVE PUHP YES POSITIVE DISPLACENENT VIKING HO DLO-P-2BI ENERG. DIESEL EHGINE OIL DRIVE PUMP YES POSITIVE DISPI ACEMENT VIKING DLO-P-282 EMERG. DIESEL EHGIHE OIL DRIVE PUMP YES POSITIVE DISPl ACEHEHT VIKIHG NO DLO-P-3A1 EMERG. DIESEf, ENGIHE Oll, DRIVB PUHP YES POSITIVE DISPLACEMENT VIKING DLO-P-3A2 EMERG. DIESEL ENGINE Olf DRIVE PUMP YES POSITIVE DISPI ACEHEHT VIKING HO DLO-P-3A2 EMERG. DIESEf, ENGINE OIL DRIVE PUMP POSITIVE DISPf ACEMENT VIKING NO DLO-P-381 ENERG. DIESEL, ENGINE Off, DRIVE PUHP YES POSITIVE DISPI,ACEHENT VIKING DLO-P-382 EMERG. DIESEI ENGINE Oll DRIVE PUNP YES POSITIVE DISPLACEMEHT VIKING DLO-P-4A1 BHERG. DIESEL ENGINE Olf DRIVE PUHP YES POSITIVE DISPLACEHENT GM-EMD DLO-P-4A2 ENERG. DIESEL EHGIHE OIL DRIVE PUMP YES POSITIVE DISPLACEMEHT GM-EHD DLO-P-481 EHBRG. DIESEL ENGINE OIL DRIVE PUHP YES POSITIVE DISPLACENEHT GM-EMD DLO-P-4B2 EHERG. DIBSBl ENGINE OIL DRIVE PUMP YES POSITIVE DISPLACEMENT GM-END DLO-P-5A1 BHERG. DIESEL ENGINE Olf DRIVE PUMP YES POSITIVE DISPLACEMENT GH-EHD DLO-P-5A2 EHERG. DIESEf BNGIHE OIL DRIVE PUNP YES POSITIVE DISPLACEMEHT GH-EMD DLO-P-581 EHERG. DIBSEf BHGINE OIL DRIVE PUHP YES POSITIVE DISPLACEMENT GM-EMD DLO-P-5B2 EHERG. DIESEL BNGIlfE OIL DRIVE PUHP YES POSITIVE DISPf ACBMENT GM-EHD DLO-P-6 EHERG. DIESEf BNGIHE OIL DRIVE PUHP YES POSITIVE DISPLACEMEHT VIKING HO DLO-P-7 EHERG. DIESBL EHGINE OIL DRIVE PUNP YES POSITIVE DISPf ACEMENT ALLISON HO DLO-P-8 EMERG. DIBSEf ENGINE OIL DRIVE PUMP YES POSITIVE DISPLACEHENT ALLISON DLO-P-9 EHERG. DIESBL EHGIHE OIL DRIVE PUMP YES POSITIVE DISPLACEMENT GM-EMD

TABLE 1 VNP2 PUMPS IMPORTAHT IO SAPETY TAG HO. FUNCTION SAF REK PUHP TYPE MANUFACTURER IEB 88-84 PUHP COMHENTS DO-P-IA DIESEL FUEL TRANSPBR PUMP YES CENTRIFUGAL CRANE-DEMING YES DO-P-IB DIESEf FUBI TRANSFER PUMP YES CEHTRIFUGAI CRANE-DEMING YES DO-P-2 DIESEK FUEK TRAHSFER PUMP YES CEHTRIPUGAL CRANE-DEHING YES DO-P-3hl DIBSBL ENGIHE FUEL PUHP YES POSITIVE DISPLACEMENT VIKING 00-P-3A2 DIESEL ENGINE PUEf PUMP YES POSITIVE DISPLACEMENT VIKIHG YES DO-P-3BI DIESEL ENGINB PUEK PUHP YES POSITIVE DISPLACEMENT VIKING YES DO-P-3B2 DIESEK ENGINE PURL PUHP YES POSITIVE DISPLACEMENT VIKING YES DO-P-4AI DIESEK, EHGINE FUNK, PUMP YES POSITIVE DISPI ACBMENT GH-EMD DO-P-4A2 DIESEK, ENGINE PUEI, PUMP YES POSITIVE DISPLACENEHT GM-EHD IES DO-P-4BI DIESBI ENGINE PURL PUMP YES POSITIVE DISPLACEMENT GM"EHD YES DO-P-4B2 DIESEf BNGINE FUEL PUHP YES POSITIVE DISPf ACEHEHT GH-EHD DO-P-5 DIBSEL EHGINE PUEL PUMP YES POSITIVE DISPLACEMEHT GH-EMD IES DO-P-6 DIESEf, ENGINE PUEL PUHP YES POSITIVE DISPLACEMEHT VIKING PPC-P-1h FUEL POOL COOLING VA'TER SUPPLY PUMP IES CENTRIFUGAL VORTRIHGTOH YES PPC-P-1S PUEI, POOL COOLING VATBR SUPPLY PUHP IES CEHTRIFUGAf VOR'THINGTON SPCS-P-1 HIGH PRESSURB BHERGENCY HAKEUP TO REACTOR YES CENTRIFUGAL IHGERSOLL-RAND YES BPCS-P-2 BPCS DIESEL SERVICE VATER PUHP IES CEH'IRIPUGAf PACIPIC YES HPCS-P-3 HPCS KEEP FILL SISTBH PU!KP YBS CENTRIFUGAL CRANE-DEHIHG LPCS-P-1 LOV PRESSURE EMERGBNCI HAKEUP TO REACTOR YES CENTRIPUGAL INGERSOLL-RAND IES LPCS-P-2 LPCS KEBP PILL SISTEH PUMP YES CENTRIPUGAK CRANE-DEMING IBS RCIC-P-1 MAKEUP TO REACTOR DURING ISOLATION EVENTS NO CEHTRIFUGAL BINGHAH-VILKAMET RCIC-P-2 GLAND CONDEHSBR VACUUH PUMP NO CENTRIFUGAL NASH YES RCIC-P-3 RCIC KEEP PILL SYSTEM PUMP HO CENTRIPllGAL CRANE-OEMING YES

TABLE 1 VNP2 PUMPS IMPORTANT TO SAFETY TAG NO. FUNCTION SAF REL PUMP TYPE MANUFACTUPER IEB 88-84 PUMP COMMEHTS RCIC-P-I GLAHD CONDEHSER CONDEHSATE PUHP NO CENTRIFUGAL HASH RCIC-P-5 TURBINE OIL PUMP HO POSITIVE DISPLACEMENT TUTHILI NO RFV-P-1A . FEEDVATER PUMP HO CENTRIFUGAL INGERSOLL-RAND RFV-P-1B FEEDVATER PUMP NO CENTRIFUGAL INGERSOIL-RAND YES RHR-P-2A LOV PRESURE EMERGENCY MAKEUP TO REACTOR YES CEHTRIFUGAL INGERSOLL-RAND YES RHR-P-28 LOV PRESURE EMERGENCY MAKEUP TO REACTOR YES CENTRIFUGAf IHGERSOLI-RAND YES RHR-P-2C LOV PRESURE EMERGEHCY MAKEUP TO REACTOR YES CENTRIFUGAL INGERSOLL-RAND RRR-P-3 RHR KEEP FILL SYSTEH PUMP YES CEHTRIFUGAL CRANE-DEMING YES RRC-P-1A REACTOR RECIRCULATION PUMP YES CEHTRIFUGAL BIHGHAM-VILLAMET YES RRC-P-IB REACTOR RECIRCUf ATIOH PUMP YES CEHTRIFUGAI BINGHAM-VflfAMET YES SLC-P-IA STANDBY LIQUID COHTROL INJECTION PUHP NO POSTIVE DISPLACEMENT UHION HO SLC-P-18 STANDBY f IQUID COHYROL INJECTION PUMP HO POSTIVE DISPIACEMENT UNION SV-P-1A EHERGENCY SERVICE VATER SYSTEM PUMP YES CEHTRIFUGAL INGERSOLL-RAND YES S'lf-P-18 EHERGEHCY SERVICE VATER SYSTEH PUMP YES CEHTRIFUGAL INGERSOLL-RAND YES

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