ML17305A366

Provides Implementation Schedule for Plant Diverse Scram Sys Mod Required to Meet 10CFR50.62 (ATWS Rule).Unit 1 Will Maintain Schedule Prior to Third Refueling Outage Restart & Units 2 & 3 Prior to Second Outage Restart

ML17305A366
Person / Time
Site:	Palo Verde
Issue date:	10/31/1989
From:	Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
161-02561-WFC-R, 161-2561-WFC-R, NUDOCS 8911070336
Download: ML17305A366 (6)

Text

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ACCESSION NBR:8911070336 DOC.DATE: 89/10/31 NOTARIZED: NO DOCKET N 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 CONWAZ,C.F. Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Provides. implementation schedule for plant diverse scram sys mod required to meet 10CFR60.62 (ATWR rule).

DISTRIBUTION CODE: A055D COPIES RECEIVED:LTR ENCL SIZE: "',~

TITLE: OR/Licensing Submittal: Salem ATWS Events GL-83-28 S

NOTES:

Standardized plant.

Standardized plant.

05000528 05000529 05000530 j

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RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 0 PD5 PD 3 3 CHAN,T 1 1 DAVISFM. 1 1 INTERNAL: ACRS 6 6 NRR LASHER,D 1 1 NRR/DEST/ESB 8D 1 1 NRR/DEST/ICSB 7 1 1 NRR/DEST/PSB 8D 1 0 NRR/DLPQ/PEB 10 1 0 NRR/DOEA/GCB 11 1 0 NUDOCS-ABSTRACT 1 1 95 CF 1 0 OGC/HDS1 1 0 REG FILE 01 1 1 RES/DSIR/EIB 1 1 EXTERNAL: LPDR 1 1 NRC PDR 1 1 NSIC 1 1 NOTES: 1 1 S

TOTAL NUMBER OF COPIES REQUIRED: LTTR '27 ENCL 21

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Arizona Public Service Company P.O. BOX 53999 ~ PHOENIX, ARIZONA85072<999 WILLIAMF. CONWAY 161-02561-WFC/RAB/KLMC EXECUTIVEVICEPRESIDENT NUCLEAR October 31, 1989 Docket Nos. STN 50-528/529/530 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D. C. 20555

References:

1) Letter to the U. S. NRC from W. F. Conway, APS, dated August 6, 1989;

Subject:

PVNGS Implementation of the ATWS Rule (161-02181)

2) Letter to U. S. NRC from Z. G. Haynes, APS, dated March 13, 1987;

Subject:

PVNGS Schedule for Implementation of the ATWS Rule (161-00074)

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2 and 3 Implementation Schedule for the PVNGS Diverse Scram System 10 CFR 50.62 (ATWS Rule)

File: 89-056-026 As stated in Reference 1, Arizona Public Service (APS) is providing an updated status of the implementation schedule for the Diverse Scram System (DSS) modif ication, required to meet 10 CFR 50. 62 (ATWS Rule), for PVNGS Unit 2. At the present time, the completion of the design process is currently on schedule to support the implementation of the DSS modification during the upcoming outage.

The procurement schedule, for the modification, has not yet been finalized or confirmed by the vendor. APS expects that the procurement process, once confirmed by the vendor, will support implementation of the DSS modification during the upcoming Unit 2 refueling outage. The Unit 2 refueling outage is currently scheduled to commence during the first quarter of 1990. Based on this information, APS plans to maintain the implementation schedule for the DSS modification for PVNGS as follows:

Unit 1: Prior to restart from the third refueling outage Unit 2: Prior to restart from the second refueling outage Unit 3: Prior to restart from the second refueling outage 8'71i07033b 89i03i PDR ADOCK 05000528 P PNU

II E Document Control Desk 161-02561-WFC/RAB/KLMC U. S. Nuclear Regulatory Commission October 31, 1989 Page 2 It should be noted that the schedules for Units 2 and expedited implementation schedules from those previously committed 3 are to in Reference 2,.

If you should have any questions concerning contact. Mr. R'. A. Bernier at (602): 371-4295.

this, matter, please Sincerely, WFC/RAB/KLMC cc: T. L. Chan M. J. Davis J. B. Martin T. J. Polich

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