ML20149B063

Amend 1 to CPPR-126 Re Deleting Requirement That Chlorine Minimization Study Be Performed & Results Submitted to NRC Prior to Docketing of Er,Ol Stage

ML20149B063
Person / Time
Site:	Comanche Peak
Issue date:	12/04/1978
From:	Boyd R Office of Nuclear Reactor Regulation
To:
Shared Package
ML20149B054	List: ML20149B051 ML20149B063 ML20149B071 ML20149B075 ML20149B081
References
NUDOCS 7812120032
Download: ML20149B063 (1)

Text

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UNITED STATES

.!v ),f' NUCLEAR REGULATORY COMMISslON g

g WASHINGTON D. C. 20555 d,;. #

TEXAS UTILITIES GENERATING COMPANY, ET AL.

DOCKET NO. 50-445 COMANCHE PEAK STEAM ELECTRIC STATION, UNIT N0. 1 AMENDMENT TO CC3STRUCTION PERMIT Amendment No. 1

. Construction Permit No. CPPR-126 The Nuclear Regulatory Commission has issued Amendment No. I to Construction Permit No..CPPR-126.

The amendment modified Condition 3.E.(7) to read as follows:

(7) The Applicants shall design the facility to control the addition of chlorine to the circulating water system such that the' concentration of total residual chlorine at the point of discharge to Squaw Creek Reservoir is 0.1 ppm or the minimum practicable level demonstrated by the Applicants as being necessary. The minimum practicable level of chlorination necessary shall be determined by the Applicants through a study program.

This study shall include an evaluation of the effects of residual chlorine releases on Squaw Creek Reservoir, a demonstration of the minimum total residual chlorine level necessary for efficient opera-tion of the station, and an evaluation of the monitoring program to be used to determine total residual chlorine and its effects.

Alternative methods of reducing chlorine residuals shall also be investigated, and these shall include but not be limited to optimizing chlorine dosage, modifying condenser design to permit sequential treatment of sections of the condensers, and optimizing the chlorination schedule to coincide with periods of low condenser flow.

This amendment is effective as of the date of issuance.

FOR THE NUCLEAR REGULATORY C0lHISSION 4

i Roger S. Boyd,' Direct'or Division of Project Management Office of Nuclear Reactor Regulation Data of Issuance DEC 4 1978' 78.12120037_

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