ML20065G316

Proposed Tech Specs Revising Surveillance Requirements 4.8.2.1.e & F & Table 4.8-2 Re DC Sources

ML20065G316
Person / Time
Site:	Vogtle
Issue date:	03/31/1994
From:	GEORGIA POWER CO.
To:
Shared Package
ML20065G305	List: ML20065G292 ML20065G316
References
NUDOCS 9404120242
Download: ML20065G316 (1)

Text

1 . . .

, . ENCLOSURE INSERT FOR PAGE 3/4 8-12

e. By verifying during shutdown, that the battery capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test, in accordance with table 4.8-3.

NEW PAGE 3/4 8-13a Table 4.8-3 Performance Discharge Test Surveillance Requirements Battery Battery Performance Test Frequency Life Condition """ """ ^ ' " ""

Per 60 Montha Per 24 Mmthe Per 12 Maths 13attesy Life No

< 85% Degradationo ) p2) ofExpected Sc ice Life Degradation 0)

)

l3attery Life

> 85% No  ;

ofExpxted Degradation 0) X")  !

Service Lifc0) l

1. Degradation is defined as a decrease in battery capacity of more than 10% of capacity from its previous performance test, or the battery capacity is less then 90% of the manufacturer's rating.

2. Once per 60-month interval, this performance discharge test may be performed in lieu of tle battery service test required by Specification 4.8.2.ld.

3. The battery can be restored to a 60-month test interval by cell replacement if performance test results indicate that cell replacement will restore the battery to a minimum of 90% of rated capacity with no degradation. Replacement cells must be tested to demonstrate a minimum capacity of 100% of the  :

manufacturcr's rating prior to installation.

4. Once per 24-month interval, a modified performance discharge test may be performed in lieu of the battery senice test required by Specification 4.8.2.ld. A modified performance dir. charge test is a test of the battery capacity and ita ability to provide a high rate, short duration load (usually the higlest rate of the duty cycle).

5. When battery life is greater tlum 85% of the expected life of the battery and degradation is indicated, cell replacement shall not be used to restore the capability of the battery for more than one year; and the battery shall be replaced within one year of the date of the discovery of the cell degradation.

9404120242 940331 PDR ADOCK 05000424 P' PDR