ML20149H112

Proposed Tech Specs Revising Operability & Surveillance Requirements for Component Cooling Water Sys

ML20149H112
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	02/04/1988
From:	PORTLAND GENERAL ELECTRIC CO.
To:
Shared Package
ML20149H082	List: ML20149H079 ML20149H092 ML20149H112
References
TAC-67161, NUDOCS 8802190113
Download: ML20149H112 (4)

Text

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PLANT SYSTEMS 3/4.7.3 COMPONENT COOLING WATER SYSTEM LIMITING CONDITION FOR OPERATION 3.7.3.1 At least two independent component cooling water (CCW) loops shall be OPERABLE with one train isolated from Seismic Category 11 loads. The spare CCW pump shall be OPERABLE.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

With the spare pump inoperable, restore the spare pump to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in COLD SHUT 00WN within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

l With only one CCW train and spare pump OPERABLE, restore the other train to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in COLD SHUT 00WN within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.7.3.1 The CCW System shall be demonstrated OPERABLE:

a. At least once per 31 days by serifying that each valve (manus 1, power operated or automatic) servicing safety related equipment that is not locked, sealed, or otherwise secured in position, is in its correct position,

b. By verifying that each CCW pump is OPERABLE when tested pursuant to Specification 4.0.5.

c. At least once per 18 months, during shutdown, by verifying that each automatic valve servicing safety related equipment, except  :

those valves in Specification 4.7.3.1.d. actuates to its correct position on a Containment isolation signal.

d. At least once per 18 months, during shutdown, by verifying that valves M0-3294, M0-3296, MO-3300, and MO-3320 actuate to their I correct position on:

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1. A Cor.tainment isolation signal coincident with a low '

CCW surge tank level, and I

2. A high-high Contain.nent pressure signal.

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e. By verifying that each power operated (excluding automatic) l valve is OPERABLE when tested pursuant to Specification 4.0.5.

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f. At least once per 31 days by verifying that either CV-3304 and CV-3288, or CV-3303 and CV-3287, are closed.

g. At least once per 92 days by verifying that power can be supplied to the spare CCW pump from both buses.

TROJAN-UNIT 1 3/4 7-13 Amendment No. 7#, 72#

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PLANT SYSTEMS COMPONENT COOLING WATER SYSTEM LIMITING CONDITION FOR OPERATION 3.7.3.2 At least two component cooling water (CCW) trains capable of supply-ing cooling water to equipment needed in MODES 5 and 6, or at least one train and the spare CCW pump, shall be OPERABLE.

APPLICABillTY: MODES 5 and 6.

ACTION:

With less than the required number of CCW trains OPERABLE, declare supported equipment inoperable.

With only one CCW train OPERABLE and the spare pump inoperable, declare supported equipment inoperable.

SURVElllANCE RE0VIREMENTS 4.7.3.2 At least two CCW trains or one train and the spare CCW pump, shall be demonstrated OPERABLE by verifying that necessary components (the portion necessary to support equipment which is required to be OPERABLF in the applicable MODES above) are OPERABLE when tested pursuant to Specification 4.0.5.

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l 1ROJAN-UNIT 1 3/4 7-14 Amendment No. 74,174 i

PLANT SYSTEMS BASES 3/4.7.3 COMPONENT COOLING WATER SYSTEM The OPERABILITY of the CCW System ensures that sufficient cooling capacity is available for continued operation of safety-related equipment during normal and accident conditions. The redundant cooling capacity of this system, assuming a single failure, is consistent with the assumptions used in the accident analyses.

The OPERABILITY of the CCW System with one train isolated from Seismic Category 11 loads ensures that sufficient cooling capacity is available for continued operation of safety-related equipment following a seismic event. The OPERABILITY of the spare CCW pump ensures the availability of a CCW loop even with a single-failure concurrent with a seismic event.

Operation in Modes 1 through 4 is permitted with one CCW train inoperable for up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> provided the spare CCW pump is OPERABLE.

During this 72-hour time period, the OPERABLE CCW train should not be isolated from Seismic Category 11 loads to ensure a continuous supply of CCW cooling to the reactor coolant pumps. The spare CCW pump is i considered OPERABLE provided Surveillance Requirements 4.7.3.1.b and 4.7.3.1.g have been met.

3/4.7.4 SERVICE WATER SYSTEM The OPERABILITY of the service water system ensures that sufficient cooling capacity is available for continued operation of safety related equipment during normal and accident conditions. The redundant cooling capacity of this system, assuming a single failure, is consistent with the assumptions used in the accident conditions within acceptable limits.

3/4.7.5 ULTIMATE HEAT SINK The Columbia River is the ultimate heat sink and ensures that suf ficient cooling capacity is available to either 1) provide norwal 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 maximum 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 nornal water supply f rom the intake structure is lost. The required '

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

TROJAN-UNIT 1 B 3/4 1-4 Amendment No. 120

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. UNITED STATES OF AMERICA NUCLEAR RECULATORY C0KMISSION In the Matter of )

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PORTLAND GENERAL ELECTRIC COMPANY, ) Docket 50-344 THE CITY OF EUCENE, OREGON, AND ) Operating Licease NPF-1 PACIFIC POWER & LIGHT COMPANY )

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(TROJAN NUCLEAR PLANT) )

g P_IIFICATE OF SERVICE I hereby certify that copies of License Change Application 104, to the Operating License for Trojan Nuclear Plant, dated February 4,1988, have been served on the following by hand delivery or by deposit in the United States mail, f'.rst class, this 4th day of February 1988:

Mr. William Dixon State of Oregon Department of Energy 625 Marion St NE Sr'am OR 97310 l

l Mr. Michael J. Sykes Chairman of County Commissioners Columbia County Courthouse St. Helens OR 97051 w_ -

G. A, immerman, Manager Nuc1 a Regulation Branch Nucl ar Safety & Regulation "ubscribed and sworn to before me this 4th day of February 1988.

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<4 /f . r u' Notary Public of Ores'on

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My Connission Expires: / m _2 _ . .

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