ML20211E965

Proposed Tech Specs,Reflecting Columbia River as UHS W/Cooling Tower Basin as Backup.W/Certificate of Svc

ML20211E965
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	06/12/1986
From:	PORTLAND GENERAL ELECTRIC CO.
To:
Shared Package
ML20211E948	List: ML20211E943 ML20211E956 ML20211E965
References
TAC-61726, NUDOCS 8606170075
Download: ML20211E965 (3)

Text

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PLANT SYSTEMS 3/4.7.5 ULTIMATE HEAT SINK LIMITING CONDITION FOR OPERATION 3.7.5.1 The cooling tower basin shall be OPERABLE with:

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a. A minimum contained water volume of 3 x 10 gallons, and

b. An average water temperature of < 95'F.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

With the requirements of the above specification not satisfied, be in COLD SHUTDOWN within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.7.5.1 The cooling tower basin shall be determined OPERABLE at least l once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying the average water temperature and water level to be within their limits.

1 TROJAN-UNIT 1 3/4 7-17 Amendment No. 17 September 22, 1977 8606170075 860612 PDR ADOCK 05000344 p PDR

l PLANT SYSTEMS ' '

, BASES 3/4.7.3 COMPONENT COOLING WATER SYSTEM The OPERABILITY of the component cooling water system ensures that sufficient cooling capacity is available for continued operation of safety related equipment during nornal and accident conditions. The i

redundant cooling capacity of this system, assuming a single failure, is consistent with the assumptions used in the accident analyses.

3/4.7.4 SERVICE WATER SYSTEM

! The OPERABILITY of the service water system ensures that sufficient l cooling capacity is available for continued operation of safety related equipment during normal and accident conditions. The redunant cooling capacity of this system, assuming a single failure, is consistent with the assumptions used in the accident conditions within acceptable limits.

l 3/4.7.5 ULTIMATE HEAT SINK The Columbia River is the ultimate heat sink and ensures that l sufficient cooling capacity is available to either 1) provide normal cooldown of the facility, or 2) to mitigate the effects of accident conditions within acceptable limits.

' The limitations on cooling tower basin minimum water level and l max

• mum temperature are based on providing an adequate (approximately 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />) cooling water supply to safety related equipment in the event the normal water supply from the intake structure is lost. The required l l

amount of water is adequate to provide normal cooldown of the facility until makeup flow from the Columbia River to the cooling tower basin can be restored.

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TROJAN-UNIT 1 B 3/4 7-4 1

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UNITED STATES OF AMERICA NUCLEAR RECULATORY COMMISSION In the Matter of )

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PORTLAND GENERAL ELECTRIC COMPANY, ) Docket 50-344 13~ CITY OF EUGENE, OREGON, AND ) Operating License NPF-1 PACIFIC POWER & LIGHT COMPANY )

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(TROJAN NUCLEAR PLANT) )

CERTIFICATE OF SERVICE I hereby certify that copies of License Change Application 140 to the Operating License for Trojan Nuclear Plant, dated June 12, 1986, have been served on the following by hand delivery or by deposit in the United States mail, first class, this 12th day of June 1986:

Mr. Lynn Frank, Director State of Oregon Department of Energy Labor & Industries Bldg, Rm 102

, Salem OR 97310 Mr. Michael J. Sykes Chairman of County Commissioners Columbia County Courthouse St. Helens OR 97051 A/A/ W

" J. C Lentsch, Manager l Nuclear Safety & Regulation l

Subscribed and sworn to before me this 12th day of June 1986.

v Notary Public of Oreg#6 OMyCommission O 4d [MM '

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