ML17305A493

Provides Status of Actions Requested in Response to NRC Bulletin 89-003, Potential Loss of Required Shutdown Margin During Refueling Operations. Fuel Loading Procedures for Units 2 & 3 Will Be Revised Prior to Next Outage

ML17305A493
Person / Time
Site:	Palo Verde
Issue date:	01/26/1990
From:	Bailey J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
161-02800-JNB-K, 161-2800-JNB-K, IEB-89-003, IEB-89-3, NUDOCS 9002060122
Download: ML17305A493 (10)

Text

~ACCELERATED DISTIUBUTION DEMONST$IATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS),ACCESSION NBR:9002060122 DOC.DATE: 90/01/26 NOTARIZED:

YES DOCKET FACIL:STN-50-528 Palo Verde Nuclear'Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530'AUTH.NAME AUTHOR AFFILIATION BAILEY,J.N.

Arizona Public Service Co.(formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)NOTES: Standardized plant.Standardized plant.

SUBJECT:

Provides status of actions requested re response to NRC K Bulletin 89-003,"Potential Loss of Required Shutdown...." DISTRIBUTION CODE: IE29D COPIES RECEIVED:LTR ENCL'IZE: TITLE: Bulletin 89-03 Potential Loss of Required Shutdown Margin During Refu I/05000528 05000529 P 05000530 r RECIPIENT-ID CODE/NAME PD5 LA CHAN,T PETERSON,S.

INTERNAL: AEOD/DOA KOPP,LARRY NRR/DET/ECMB 9H NRR/DOEA/OEABll NRR/DREP/PEPB9D NRR/HERMAN

/B NRR/PMAS/ILRB12

'BfSPBBS~D 02+RGN5 FILE 01 EXTERNAL: LPDR NSIC NOTES COPIES LTTR ENCL 1 0 1 1 1 1 1 1 1'2 2 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 DAVIS,M.AEOD/DSP/TPAB LABARGE,DAVE NRR/DET/EMEB9H3 NRR/DOEA/OGCBll NRR/DST 8E2 NRR/MCLELLAN,T NRR/ROOD,H NUDOCS-ABSTRACT RES/DSIR/EIB NRC PDR COPIES LTTR ENCL 1 1 1 1 1 1 1.1 1'1, 1 1 1 1 1 1 1 1 1 1 1 1 1 NOTE TO ALL"RIDS" RECIPIENTS:

D D PLEASE HELP US TO REDUCE WASTEl CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT.20%9)TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!TOTAL NUMBER OF COPIES REQUIRED: LTTR 29 ENCL 28

Arizona Public Service Company PALO VERDE NUCLEAR GENERATING STATION P.O.BOX 52034~PHOENIX.ARI2ONA 85072-2034 JACK N.BAILEY VICE P8ESIDENT Nuc<E;8 saFEt Y aND I.lcENsiNG 161-02800-JNB/KLMC January 26, 1990 Docket Nos.50-528/529/530 Document Control Desk U.S.Nuclear Regulatory Commission Mail Station Pl-37 Washington, D..C.20555

Reference:

NRC Qulletin No.89-03: Potential Loss of Required Shutdown Margin During Refueling Operations, dated November 21, 1989.

Dear Sirs:

Subj ect: Palo Verde Nuclear Generating Station Units 1, 2 and 3 Response to NRC Bulletin 89-03 File: 90-055-026, 90-056-026 As requested by NRC Bulletin 89-03, the Attachment to this letter provides the status of the actions requested by the referenced NRC Bulletin.If you should have any questions regarding this matter, contact Mr.A.C.Rogers, of my staff, at (602)340-4041.Sincerely, WFC/ACR/KU1C Attachment cc: T.L.Chan S.R.Peterson J.B.Martin D.H.Coe (All w/Attachment) l 161-02800-JNB/KLMC January 26, 1990 STATE OF ARIZONA))ss.COUNTY OF MARICOPA)I, J.N.Bailey, represent, that I am Vice President-Nuclear Safety and Licensing, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority to do so, that I have read such'document and know its contents, and that to the best of my knowledge and belief, the statements made therein are true and correct.J.N.Bailey Sworn To Before Me This~h Day Of;1990./l);~.d~Notary Public My Commission Expires My Commission Expirt.s April 6,}991 l

ATTACHMENT 161-02800-JNB/KLNC January 26, 1990 APS Status of NRC Bulletin 89-03 Re uested Actions Re uested Action 1;Assure that any intermediate fuel assembly configuration (including control rods)intended to be used during refueling is identified and evaluated to maintain sufficient refueling boron concentration to result in a minimum shutdown margin of approximately 5%.APS Status'PS has evaluated the intermediate fuel storage locations, allowed by procedure,"Core Reloading".

The procedurally allowable fuel storage locations will maintain a minimum shutdown margin of at least 5%, with the Technical Specification defined minimum boron concentration.

Re uested Action 2: Assure that fuel loading procedures only allow those intermediate fuel assembly configurations that do not violate the allowable shutdown margin and that these procedures are strictly adhered to.APS Status'PS's fuel loading procedure for Unit 1,"Core Reloading", has been revised to permit only final and intermediate loading locations which will not violate the allowable shutdown margin.The fuel loading procedures for Units 2 and 3 will be revised prior to each unit's next respective refueling outage.APS has also strengthened the administrative controls which assure that the Material Balance Area Sheets, which control fuel transfers, are accurate and that fuel transfers are properly controlled in accordance with procedure.

These actions were in response to recent experiences during the refueling of Unit 1.

4 f I ATTACHMENT (Continued) 161-02800-JNB/KLMC January 26, 1990 APS Status of NRC Bulletin 89-03 Re uested Actions Re uested Action 3'ssure that the staff responsible for refueling operations, is trained in the procedures recommended in Item 2 above and understand the potential consequences of violating these procedures.

This training should include the fundamental aspects of criticality control with higher enriched fuel assemblies.

APS Status The APS Reactor, Engineering Department is responsible for specifying the fuel movement sequence and providing guidance to operations for intermediate storage of fuel assemblies during refueling operations.

The Reactor Engineering staff has been trained with respect to this issue and its potential consequences.