ML20151U717

Revised Proposed Tech Specs Re Plant Sys,As Part of Rev 1 to License Change Application 142

ML20151U717
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Site:	Trojan File:Portland General Electric icon.png
Issue date:	04/14/1988
From:	PORTLAND GENERAL ELECTRIC CO.
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ML20151U713	List: ML20151U710 ML20151U717
References
NUDOCS 8805020136
Download: ML20151U717 (2)

Text

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['* LCA 142. Revision 1 Attachment

.- Page 2 of 6 PLANT SYSTEMS 3/4.7.6 CONTROL ROOM EMERGENCY VENTILATION SYSTEM LIMITING CONDITION FOR OPERATION 3.7.6.1 Two independent control room emergency ventilation systems shall be OPERABLE.

APPLICABILITY: ALL MODES.

ACTION:

MODES 1, 2, 3, and 4:

With one control room emergency ventilation system inoperable,

' restore the inoperable system to OPERABLE status within 7 days 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 />.

With both control room emergency ventilation systems inoperable (where inoperability is due solely to failure to maintain the control room at a positive pressure of 11/8 inch WG relative to outside atmosphere or to adjacent spaces, but able to maintain the control room at a positive pressure of 11/16 inch WG relative to outside atmosphere and adjacent spaces), restore at least one system 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 />.

MODES S and 6:

a. With one control room emergency ventilation system inoperable, 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.

I

b. With both control room emergency ventilation systems inoperable, suspend all operations involving CORE ALTERATIONS or positive reactivity changes.

SURVEllLANCE RE0VIREMENTS 4.).6.1 Each control room emergency ventilation system shall be demon-strated OPERABLE:

$ a. At least once per 31 days on a STAGGERED TEST BASIS by initiating flow through the HEPA filter and charcoal adsorber train and f 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 3/4 7-18 Amendment No. 77, 38 TROJAN-UNIT 1 8805020136 080414 DR ADOCK0500gg4

s.

0 ' LCA 142, Revision 1 Attachment Page 3 of 6 PLANT __ SYSTEMS SURVEILLA MF,_ REQUIREMENTS (Continued) prsheaters on and maintains the control room air temperature 5 1.0*F.

b. At lea:t once per 31 days by verifying that the system maintains the control room at a positive pressure of 11/8 in. WG relative to the outside atmosphere and to other adjacent spaces during system operation.

c. At least once per 18 months or (1) af ter any structural maintenance on the HEPA filter or charcoal adsorber housings, or (2) following painting, fire or chemical release in any ventilation zone communicating with the system by:

1. Verifying that the charcoal adsorbers remove 199.95% of l a halogenated hydrocarbon ref rigerant test gas when they are tested in-place in accordance with ANSI N510-1975 while operating the ventilation system at a flow rate of 3000 cfm i 10%. l

2. Verifying that the HEPA filter banks remove 1 99.95% of the l DOP when they are tested in place in accordance with ANSI N510-1975 while operating the ventilation system at a flow rate of 3000 cfm i 10%. l

3. Verifying within 31 days af ter removal that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52, Revision 2, March 1978, demonstrates a pene-tration of 51.0 percent when tested in accordance with ASTM 03803-79 Methyl lodide Penetration Test Methods at 30'C and 70 percent relative humidity.

4. Verifying a system flow rate of 3000 cfm i 10% (of which makeup flow is 5 525 cfm) during system operation in the pressurization mode of operation when tested in accordance with ANSI N510-1975.

d. After every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> of charcoal adsorber operation by veri-fying within 31 days after removal that a laboratory analysis of a representative carbon sample obtained in accordance with 3/4 7-19 Amendment No. 79 TROJAN-UNIT 1 i l