ML20235H970
| ML20235H970 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/08/1987 |
| From: | DUQUESNE LIGHT CO. |
| To: | |
| Shared Package | |
| ML20235H953 | List: |
| References | |
| NUDOCS 8707150338 | |
| Download: ML20235H970 (1) | |
Text
I r
PLANT SYSTEMS 3/4.7.7 CONTROL ROOM EMERGENCY AIR CLEANUP AND PRESSURIZATION SYSTEM LIMITING CONDITION FOR OPERATION 3.7.7 The Control Room Emergency Air Cleanup and Pressurization System com-prised of the following shall be OPERABLE:
a.
A pressurization filtration unit comp
- f two trains of fans and filters, and flow path control damper 4
i b.
A bottled air pressurization system comprised of 5 subsystems with f
two bottles in each subsystem.*
c.
Two isolation dampers in series in each of four normal air flow paths (two intake and two exhaust) with each damper OPERABLE by automatic actuation or LE by being secured in a closed position with power remove *+
- APPLICABILITY:
All MODES.
ACTION:
t MODES 1, 2, 3 and 4:
With one train of the pressurization filtration unit, or one subsystem of the bottled air pressurization system, or one of two isolation dampers in series inoperable, restore the 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 />.
MODES 5 and 6:
a.
With one train of the pressurization filtration unit or one subsystem of the bottled air pressurization system, or one of two isolation dampers in series inoperable, restore the inoperable system to OPERABLE status within 7 days or suspend all operations involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel and movement of loads over irradiated fuel, b.
With both trains of the pressurization filtration unit, or more than one subsystem of the bottled air pressurization system, or two of two isolation dampers in series inoperable suspend all operations involv-ing CORE ALTERATIONS, positive reactivity changes, movement of irradi-ated fuel and movement of loads over irradiated fuel.
8707150338 870708 DR ADOCK 0500 2
- The air bottles may be isolated for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> for performance of instru-mentation and control systems testing.
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