ML17305B550

Forwards Rev 6 to Salt Deposition & Impact Monitoring Plan for Palo Verde Nuclear Generation Stations,Units 1,2 & 3 & Rev 2 to Study of Anpp Drift Deposition Monitoring Program After 4 Yrs of Operation.

ML17305B550
Person / Time
Site:	Palo Verde
Issue date:	05/21/1991
From:	Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17305B551	List: ML17305B550 ML17305B552 ML17305B553
References
161-03961-WFC-J, 161-3961-WFC-J, NUDOCS 9105310006
Download: ML17305B550 (6)

Text

FQHD 1 REGULRY INFORMATION DISTRIBUTI SYSTEM (RIDE)

ACCgfSION NBR:910 5310006 DOC.DATE: 91/05/21 NOTARIZED: NO 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 CONWAY,W.F. Arizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Submits Rev 6 to salt deposition 6 impact monitoring plan for PVNGS.

DISTRIBUTION CODE: A001D TITLE: OR COPIES RECEIVED:LTR Submittal: General Distribution

/ ENCL / SIZE: g+ g x

NOTES:STANDARDIZED PLANT 05000528 Standardized plant. 05000529 M Standardized plant. 05000530 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 1 PD5 PD 1 1 TRAMMELL,C 2 2 THOMPSON,M 2 2 INTERNAL: ACRS 6 6 NRR/DET/ECMB 9H 1 1 NRR/DET/ESGB 1 1 NRR/DOEA/OTSB11 1 1 NRR/DST 8E2 1 1 'NRR/DST/SELB 8D 1 1 NRR/DST/SICB8H3 1 1 NRR/DST/SRXB 8E 1 1 NUDOCS-ABSTRACT 1 1 OC B 1 0 OGC/HDS1 1 .

0 EG 01 1 1 RES/DSIR/EIB 1 1 EXTERNAL: NRC PDR 1 1 NSIC 1 1 NOTES: 1 1 gQ.'/5 R/DEi EsG8 M

TOTAL NUMBER OF COPIES REQUIRED: LTTR 27 ENCL 25

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Arizona Public Service Company P.O. BOX 53999 ~ PHOENIX, ARIZONA 85072<999 WILLIAMF. CONWAY 161-03961-WFC/JRP EXECUTIVEVICE PRESIDENT NUCLEAR May 21, 1991 Docket Nos. STN 50-528/529/530 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station Pl-37 Washington, D. C. 20555

Dear Sirs:

Subj ect: Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Proposed Change to the Salt Deposition and Impact Monitoring Plan File: 91-001-001-8; 91-056-026" Pursuant to the requirements of Facility Operating License Nos. NPF 41, NPF 51, and NPF 74, Appendix B, Environmental Protection Plan (Non-Radiological) Section 4.2.2., enclosed for your review and approval is proposed Revision 6 to the Salt Deposition and Impact Monitoring Plan for PVNGS.

The purpose of the Salt Deposition and Impact Monitoring Plan is to assess the impacts of cooling tower salt drift on soils, native vegetation and agricultural crops in the PVNGS vicinity. The monitoring program associated with the plan was implemented prior to the commercial operation of Unit 1, and was required for a minimum of three full years after the commercial operation of all three PVNGS Units, or until such time that,PVNGS can demonstrate to the satisfaction of the NRC that the objectives of the study have been fulfilled.

Since January 28, 1986, (commercial operation, Unit 1) PVNGS has monitored salt drift emissions from the operation of the mechanical draft cooling towers to determine the environmental impact. This information has been transmitted annually to the NRC Staff.

Between March 1989 and April 1990, the Palo Verde Units experienced outages of various durations which resulted in reduced mechanical draft cooling tower usage.

Therefore, APS has decided to continue the monitoring of salt drift emissions for an additional year, beyond the required three full year period.

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9105310006 9i052i PDR ADQCK 05000528

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161-03961-WFC/JRP May 21, 1991 U. S. Nuclear Regulatory Commission Document Control Desk Page Two APS and NUS Corporation have reviewed the results to date of salt deposition monitoring and have determined that program modifications are appropriate.

Enclosed with this letter, is the NUS report entitled "A Study of the ANPP Drift Deposition Monitoring Program After Four Years of PVNGS Operation." Section 5.0 of the NUS report describes the proposed program modifications. The proposed modifications would result in a positive economic impact on the organization, while maintaining a program adequate to detect any environmental impact of cooling tower operation. These proposed modifications are reflected in the proposed Revision 6 to the Salt Deposition and Impact Monitoring Plan for PVNGS, and,will be implemented following NRC approval.

If you should have any questions, please call Michael E. Powell of my staff at (602) 340-4981.

Sincerely, WFC/JRP/pmm Enclosure cc: C. M. Trammell J. B. Martin D. H. Coe A. H. Gutterman A. C. Gehr

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