ML18051A291
| ML18051A291 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 01/24/1983 |
| From: | CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | |
| Shared Package | |
| ML18051A288 | List: |
| References | |
| NUDOCS 8301270218 | |
| Download: ML18051A291 (2) | |
Text
j CONSUMERS POWER COMPANY PALISADES PLANT
- DOCKET 50-255 LICENSE DPR-20 8301270218 830124
~DR ADOCK 05000255 PDR PROPOSED TECHNICAL SPECIFICATIONS CHANGE REQUEST PROPOSED PAGE 1 Page
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4.7 4.7.3 EMERGENCY POWER SYSTEM PERIODIC TESTS (contd)
- b.
Every three months, the specific gravity of each cell, the temperature reading of every fifth cell, the height of electrolyte, and the amount of water added shall be measured and recorded.
Emergency Lighting The correct functioning of the emergency lighting system outside of containment shall be verified at lease once each year.
The emergency lighting system inside containment shall be verified operable during each refueling outage but at least once every two years.
Basis The emergency power system provides power requirements for the engineered safety features in the event of a DBA.
Each of the two diesel generators is capable of supplying minimum required safeguards equipment from independent buses.
(1, 2)
This redundancy is a factor in establishing testing intervals.
The monthly tests specified above will demonstrate operability and load capacity of the diesel generator.
The fuel supply and various controls are continously monitored and alarmed for abnormal conditions.
Starting on complete loss of off-site power will be verified by simulated loss-of-power tests at approximately yearly intervals (during refueling shutdowns).
Considering system redundancy, the specified testing intervals for the station batteries should be adequate to detect and correct any malfunction before it can result in system malfunction.
Batteries will deteriorate with time, but precipitous failure is extremely unlikely.
The surveillance specified is that which has been demonstrated over the years to provide an indication of a cell becoming unserviceable long before it fails.
References (1) FSAR, Section 8.4.1.
(2) FSAR, Section 8.5.2.2.
OC0183-0008B-NL02 4-43 PROPOSED