ML20210T204

Provides Travel Time & Dilution Factors Estimated for Use in Evaluating Radionuclide Concentrations Resulting from Postulated Accidental Liquid Radwaste Spill at Plant

ML20210T204
Person / Time
Site:	Satsop
Issue date:	04/25/1975
From:	Hulman L Office of Nuclear Reactor Regulation
To:	Burke W Office of Nuclear Reactor Regulation
References
CON-WNP-1768 NUDOCS 8605290797
Download: ML20210T204 (1)

Text

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t W. C, Burke Section Leader. Applications Section, Effluent Treatment Systems Branch. TR

-HYDROLOGIC ENGINEERING INPUT - POSTULATED ACCIDENTAL LIQUID RADWASTE SPILL n

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ePLANT NAME: WPPSS 3 & 5

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'.J REQUESTEF CGtPLETION DATE: May 9.:1975 "1V 9

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,. Travel times and dilution factors have been estimated by T. Johnson _ for M

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'4your use in evaluating radionuclide concentrations resulting from a

1.."i postulated accidental liquid radwasta spill at the subject plant.

il The present design proposed at WPPSS'3 & 5 calls for a groundwater i

l drainage system to pennanently lower the groundwater table at safety-related buildings. A passive system of vertical and horizontal drains

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is used for this purpose.

In postulating the accidental spill, it was

' assumed that the spill would leak through cracks in the floor, and the contents of the ruptured tank would enter the groundwater drainage

. system of the rate at which the system can accept it. The system dis-

..' charges into Workman Creek..which flows into the Chehalis River northeast -

of the plant. This creek is not used as a source of potable water. The nearest water user (irrigation) is along Workman Creek near its confluence with the Chehalis. The following conservative dilution factorsand travel -

time apply to that location.

Dilution Factor. F = 2 l

Travel Time, t = 1 hr.

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