ML17305B261

Responds to NRC Re Violations Noted in Insp Repts 50-528/90-43,50-529/90-43 & 50-530/90-43.Corrective Actions: Enhanced Guidance for Control of Alarm Setpoints Incorporated Into New Procedure

ML17305B261
Person / Time
Site:	Palo Verde
Issue date:	12/17/1990
From:	Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
102-001926-WFC, 102-1926-WFC, NUDOCS 9012270343
Download: ML17305B261 (5)

Text

ACCEI ERATED DISTRIBUTION DEMONSTRATION SYSTEM I

REGULATORY INFORMATXON DISTRXBUTION SYSTEM (RIDS).

ACCESSION NBR 9012270343 DOC.DATE: 90/12/17 NOTARIZED:

NO DOCKET FACXL: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 AU'gH.NAME AUTHOR AFFILIATION CONWAYg W e F ~

Arizona Public Service Co.

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

SUBJECT:

Responds to NRC 901106 ltr re violations noted in Insp Repts 50-528/90-43,50-529/90-43

& 50-530/90-43.Corrective actions:

enhanced guidance for control of alarm setpoints incorporated into new procedure.

D S"

DISTRIBUTION CODE:

IE06D COPIES RECEIVED:LTR / ENCL SXZE:

/

TITLE: Environ

& Radiological (50 DKT)-Insp Rep /Notice of Violation Respons A

NOTES:STANDARDIZED PLANT 05000528 Standardized plant.

05000529 D

Standardized plant.

05000530 D

RECIPIENT XD CODE/NAME PD5 LA TRAMMELL,C RNAL: ACRS AEOD/DSP NMSS/LLOB 5E4 NRR/DLPQ/LPEB10 NRR/PMAS/XLRB12 OE DIRI E R

S/RPB RGN4 MURRAY,B EXTERNAL: EG&G SIMPSON,F NSXC NOTES COPIES LTTR ENCL 1

0 1

1 2

2 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 I

2 2

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RECIPIENT ID CODE/NAME PD5'D TRAMMELL,C.

AEOD/ANDERSON, R COLLINS, D RGN 2

NMSS/SGTB 4E4 NRR/DREP/PRPB11 NUDOCS-ABSTRACT OGC/HDS1 RES RGN5 FILE 01 NRC PDR COPXES LTTR ENCL 1

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D NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE iVASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOiXI P 1-37 (EAT. 20079) TO ELlivIINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TAL NUMBER OF COPIES REQUIRED:

LTTR 28 ENCL 27 D

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Arizona Public Service Company P.O. BOX 53999

~

PHOENIX, ARIZONA95072-3999 WILI.IAIDO'.CONWAY EXEC'~',V~; 0I'.FAE5~0ENT 4- '." FAR 102-001926-MFC/TRB/ J JN December 17, 1990 4

U.

S. Nuclear Regulatory Commission Attention:

Document Control Desk Mail Station:

Pl-37 Washington, DC 20555

Reference:

Letter from R.

P.

Scarano, Director Division of Radiation Safety and Safeguards, NRC to W. F.

Conway, Executive Vice President Nuclear, Arizona Public Service, dated November 6, 1990.

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Unit 1, 2,

and 3

Docket No.

STN 50-528 (License No. NPF-41)

Docket No.

STN 50-529 (License No. NPF-51)

Docket No.

STN 50-530 (License No. NPF-74)

Inspection Report 528/90-43, 529/90-43, and 530/90-43 File:

90-070-026 This letter* is provided as requested by the referenced cover letter in response to items 3.A, 3.C, and 3.D of the subject inspection report.

Item 3.A involved the calculation of iodine plateout in effluent radiation monitors and the development, and procedural incorporation of iodine correction factors=;

The calculation for iodine plateout is complete and has been incorporated into the procedure.

The procedure revision will be effective December 28, 1990.

Item 3.C discussed the methods for determining the setpoints for radiation monitor alarms and their periodic review.

The "Radiation Monitor Alarm Setpoint Determination" procedure (75RP-9ZZ89) was changed to provide a

specific interval for the periodic assessment.

The inspection report noted

"...the staff was unable to provide the inspector with any documentation of the recommended periodic assessments."

The documentation for the periodic assessment is available for an inspector's review.

Enhanced guidance for the determination and control of alarm setpoints has been incorporated into a new procedure (74RM-9EF42).

This procedure will supersede 75RP-9ZZ89 and will be effective December 28, 1990.

9C12270343 9012i7 PDR ADOCK 0500052:=:

PDR

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Document Control Desk Page 2

102-001926-WFC/TRB/J JN Oecember 17, 1990 Item 3.D discussed the anisokinetic sampling of the high range effluent monitors.

A safety evaluation has been completed and the FSAR will be revised to. reflect the existing design of the high range effluent monitors during the annual update.

Should you have any questions regarding this response, please contact me.

Very truly yours, WFC/TRB/JJN cc:

J.

B. Martin D.

H.

Coe A. H. Gutterman A.

C. Gehr