ML20034B745
| ML20034B745 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 04/22/1990 |
| From: | PORTLAND GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20034B741 | List: |
| References | |
| NUDOCS 9004300287 | |
| Download: ML20034B745 (1) | |
Text
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LCA 196-
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Attachment A Page 3 of 3; I
PLANT SYSTEMS 3/a.7.6 CONTROL ROOM EMERGENCY VENTILATION SYSTEM l'
i LIMITING CONDITION FOR OPERATION i
3.7.6.1 Two independent control room emergency ventilation systems
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e shall'be OPERABLE.-
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\\i APPLICABILITY:
ALL MODES.
ACTION:
MODES 1, 2, 3, and 4:
With one control room emergency ventilation system inoperable,
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restore the inoperable system to OPERABLE status within 7 days d
or be in at least NOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUT 00WN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
s With both control room emergency ventilation systems inoperable i
[where inoperability of one or both' systems is due solely to failure of the system (s) to maintain the control room at a posi-tive pressure of g 1/8 ihch W6 relative to outside atmosphere or to adjacent spaces,. but able to maintain ther control' room at a 6,)
positive pressure of 11/16 inch WG), restore at least one system
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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 at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within-the'following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
i MODES 5 and 6:
With one control room emergency ventilation system inoperable,
.h a.
restore the inoperable system to OPERABLE status within 7 days or initiate and maintain operation of the remaining OPERABLE control room emergency ventilation system-in the recirculation mode of operation.
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b.
With both control room emergency ventilation s'ystems inoperable, suspend all operations involving CORE ALTERATIONS or positive reactivity changes 6 speci6CAhe^ 3.0 4 Anlnot a f f C ^l')le -
h The. provi s # o M e c,,
SURVEILLANCE REOUIREMENTS i
4.7.6.1 Each control room emergency ventilation system shall be demon-strated OPERABLE:
At least once per 31 days on a STAGGERED TEST BASIS by initiating a.
flow through the HEPA filter and charcoal adsorber train and verifying that the train operates for at least 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> with the TROJAN-UNIT 1 3/4 7-18 Amendment No. 77, 26.
-'TRE~ii.J 98D
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