ML18018B475

Demonstrates That Use of Shirazi-Davis Model in Analysis of Thermal Plume Behavior Appropriate.Models Developed for Other Discharge Designs Can Be Adopted for Application to Facility

ML18018B475
Person / Time
Site:	Harris
Issue date:	10/31/1983
From:	Tsai S ARGONNE NATIONAL LABORATORY
To:	Lehr J Office of Nuclear Reactor Regulation
References
NUDOCS 8311220389
Download: ML18018B475 (6)

Text

REGULATORY I~'RMATION DISTRIBUTION SYST~ (RIDS)

ACCESSION NBR:8311220389 DUC ~ DATE: 83/10/31 NOTARIZED; NO DOCKET FACIL'50 400 Shearon Harris Nuclear Power Plant~ Unit ii Shearon Harris Nuclear Power Planti Unit 2~ Carolina Carolina 05000400 05000401

$ 50-401 AUTH, NAME 'UTHOR AFFILIATION TSAIiSe Argonne National Laboratory RECIPiNAME RECIPIEN'f AFFILIATION LEHRgJ ~ Division of Engineering SUBJECT; Demonstrates that use of Shirazi-Davis model in analysis of thermal plume behavioriappropriate,Models developed for other discharge designs'can- be adopted for application ~to facility'ISTRIBUTION CODE: 8001S COPIES RECEIVED!LTR ENCL SIZE:

TITLE: Licensing Submittal PSAR/FSAR Amdts L Related Correspondence NOTES; I

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US.Danae of Emmy ARI ONNE NATIONALLABORATORY 9700 Soph G ss Avenue, ARqowe, linis 60439 TCepho~e 312/972- 7798 October 31, 1983 Mr. John Lehr Senior Environmental Engineer Division of Engineering U.S. Nuclear Regulatory Commission Hail Stop P314 Washington, D. C. 20555

Dear John:

I would like to provide you with the following additional information to further demonstrate that the use of the Shirazi-Davis model in my analysis of thermal plume behavior for the Shearon-Harris Nuclear Power Plant is appro-priate.

Several laboratory experiments (Koester 1974, Hafetz 1975) have been performed to study submerged single-port thermal discharges for various discharge conditions. Temperature data obtained from those experiments were compared with the simulation results of the Shirazi-Davis buoyant jet model for stagnant environments (Groff 1976). The experimental jet qualities compared include the jet centerline trajectory, the jet centerline temperature decay, and the surface isotherms. The results indicated that, for the designed discharge conditions at the Shearon-Harris plant (Froride Number = 6 ~ 8 and relative depth of submergence = 5 ~ 10), the Shirazi-Davis model predicts jet centerline trajectory slightly shorter than the experimental trajectory and gives slightly higher surface temperature than the experimental jet. This comparison demonstrates that the Shirazi-Davis model is applicable for the Shearon-Harris study, and the temperature predictions which I presented in the DEIS are reasonable and conservative.

Considerable advancement in thermal plume modeling has been made in the last decade. However, the physics and modeling of single-port buoyant jet were well established in the early 70's. Based on my knowledge in thermal plume analysis and my recent conversations with Professor Eric Adams at MIT and Dr. Tony Policastro at ANL, I came to the conclusion that no other models have recently been developed specifically, for studying single-port submerged jet. Therefore, if you are interested in reanalyzing the Shearon-Harris discharge plume behavior with a more sophisticated model, to adapt from models developed for other discharge designs.

it will be necessary ANL has implemented on its computer system a three-dimensional model for studying hydrodynamics of thermal discharges in large lakes resulting from near-surface discharge. This model can be modified for the Shearon-Harris case. However, I believe the adaptation of a more sophisticated model for the Shearon-Harris study would only prove costly and not gain much improvement in the predicted temperature results.

83ii220389 83i03i PDR ADOCK 05000400 A PDR 1

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Mr. John Lehr October 31, 1983 Page 2 References Groff, C.R., "Data Analysis and Evaluation of Deep-Water Models for Shallow-Water Round-Port Discharges," M.S. Thesis, The Ohio State University, Columbus, Ohio, 1976.

Hafetz, L. I., "An Experimental Study of the Round Buoyant Jet," dissertation presented at University of Connecticut, Hartford, Connecticut, 1975 in partial fulfillment of the requirements for the degree of Doctor of Philosophy.

Koester, G.E., "Experimental Study of Submerged Single-Port Thermal Dis-charges," Pacific Northwest Laboratories, Battelle Northwest, BN-SA-398 (1974).

Sincerely, Steve Tsai'nvironmental Research Division ST/amw cc: A. J. Dvorak R. W. Yocke

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