ML20198A382

Discusses Review of Spray Pond Drift Loss Rept,Transmitted by Util .Supports Procedures Used for Measuring Water Losses.Range of Windspeeds Encountered Adequate for Verification of Relationship Used in Analysis

ML20198A382
Person / Time
Site:	Columbia
Issue date:	10/30/1985
From:	Ballard R Office of Nuclear Reactor Regulation
To:	Bradfute J Office of Nuclear Reactor Regulation
References
CON-WNP-0838, CON-WNP-838 NUDOCS 8511040116
Download: ML20198A382 (1)

Text

.--

~

9 GCT 3 .1985 Docket No. 50 397 MEMORANDUM FOR: John Bradfute, Project Manager Licensing Branch #2, DL FROM: Ronald L. Ballard, Chief Environmental & Hydrologic Engineering Branch, DE

SUBJECT:

REVIEW 0F WNP-2 SPRAY POND DRIFT LOSS REPORT JULY 1985

Reference:

Letter, G02-85-649, G. C. Sorenson (SS) to A. Schwencer (NRC) dated September 27, 1985 We have reviewed the report on spray pond drift loss transmitted with the referenced letter. We agree with the procedures used for measuring water losses and conclude that the range of windspeeds encountered is adequate for verification of the relationship used in the analysis. The measure-ments showed that a safety margin of about 20% exists between the data and the safety analysis values, and increases with increasing windspeed.

We conclude that the original analysis performed by WPPSS in 1979 was conservative in regard to calculation of drift losses.

This review was performed by Rex Wescott who may be reached on extension 28476.

Origir.:.; ;_ , .  ;,, ,

Ronald L. Ballard, Chief Environmental & Hydrologic Engineering Branch Division of Engineering cc: D. Chery R. Wescott --

DISTRIBUTION:

L,4 tickets 8511040 gQM

)(f 94 ^

EHEB Rdg M AD W RLBallard/ file , Wk K1 EC  : DE:EHEB  :

DE:EHEBf : DE:pHEB/g/:  :  :  :

(ME :RWescott:ws ::._DLChery p __.f..__:___

RLB h_..[ rt_p:  : ___________:.___________:_______ ___:___________

ATE :10/!c/85  : it /3c/85 : C /k /85 : -

0FFICIAL RECORD COPY

. . . . _ _ _ _ _ _ _ _ .