ML17310A553

Informs That as Alternative to Commitment in , Responding to GL 89-06,util Installing,As Part of Video Displays,Continuously Visible Indicators That Flash Red When Critical Safety Function in Jeopardy,Per NUREG-0696

ML17310A553
Person / Time
Site:	Palo Verde
Issue date:	08/20/1993
From:	Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-0696, RTR-NUREG-696 102-02611-WFC-T, 102-2611-WFC-T, GL-89-06, GL-89-6, NUDOCS 9308250005
Download: ML17310A553 (6)

Text

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ACCESSjON, UBR:9308250005 DOC.DATE: 93/08/20 NOTARIZED:

NO FACIE:STN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi AUTH.NAME AUTHOR AFFILIATION CONWAY,W.F.

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

SUBJECT:

Informs that as alternative to commitment in 910329 ltr, responding to GL 89-06,util installing, as part of video displays, continuously visible indicators that flash red when critical safety function in jeopardy,per NUREG-0696.

DISTRIBUTION CODE:

A003D COPIES RECEIVED:LTR

( ENCL 0 SIZE:

TITLE: OR/Licensing Submittal:

Suppl 1 to NUREG-0737(Generic Ltr 82-33)

S, NOTES:STANDARDIZED PLANT Standardized plant.

Standardized plant.

05000528 05000529 05000530 RECIPIENT ID CODE/NAME PDV LA TRAMMELLPC INTERNAL: NRR/DRCH/HHFB11 REG~~LE Ol EXTERNAL: NRC-PDR COPIES LTTR ENCL RECIPIENT ID CODE/NAME PDV PD TRAN,L OC/LFDCB RES/DSIR/EIB NSIC COPIES LTTR ENCL D

NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTEl CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 12 ENCL

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WILLIAMF. CONWAY EXECUTIVEVICEPRESIDENT NUCLEAR Arizona Public Service Company P,O, I3OX 53999

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PHOENIX, ARIZONA85072<999 102-02611-WFC/TRB/6EC August 20, 1993 U. S. Nuclear Regulatory Commission ATlN: Document Control Desk Mail Station P1-37 Washington, DC 20555

Reference:

Letter 161-03846, dated March 29, 1991, to NRC, from W. F. Conway, APS, "Generic Letter 89 Revised Implementation Schedule"

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-528/529/530 Safety Parameter Display System.(SPDS)

Implementation File: 93-001-545 93-056-026 Arizona Public Service Company (APS) letter dated March 29, 1991, indicated that the SPDS audible alarm would be re-installed in the designated user's SPDS workstation (see Item A.15 in the attachment to the referenced letter). Further evaluation by APS led to a decision to not re-install the SPDS audible alarm, based on a human factors consideration that the SPDS audible alarm could likely become a nuisance alarm.

As an alternative, APS is installing, as part of the video displays, continuously visible indicators that flash red when a critical safety function is in jeopardy. This alternative fully satisfies the need for an alarm of critical safety functions identified in NUREG-0696, and this change in the alarm function will not result in adverse effects on operator interface with the SPDS.

Three of these video displays are being installed in each control room; two are being mounted in the control boards at approximate eye level to the operators, and the third is being mounted on the operator's console.

The installation of the visible indicators has been completed in Unit 2, and the Unit 2 SPDS meets the requirements of NUREG-0737, Supplement

1. Installation of the visible indicators will be completed in Units 1 and 3 prior to the startup following the fourth refueling outage of each unit.

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U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Safety Parameter Display System Implementation Page 2 Should you have any questions, please contact Thomas R. Bradish at (602) 393-5421.

Sincerely, WFC/TRB/6EC/bcf cc:

B. H. Faulkenberry J. A. Sloan

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