ML20043B503

Proposed Tech Specs Re Battery Surveillance Requirements

ML20043B503
Person / Time
Site:	Arkansas Nuclear
Issue date:	05/22/1990
From:	ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML20043B502	List: ML20043B501 ML20043B503
References
NUDOCS 9005300113
Download: ML20043B503 (3)

Text

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TABLE 4.8-2 I' BATTERY SURVEILLANCE REQUIREMENTS l l 1 l l CATEGORY A(2) l CATEGORY B (2) l Parameter l LIMITS'for each l LIMITS for each l I)

ALLOWABLE l -l l Idesignated pilot l connected cell l VALUE for each l l l cell l l connected cell l l l l l l '

l l 1 l l l Electrolyte l> Minimum level l > Minimum level l Above top of I  ;

I l indication mark, l indication mark, l plates, l l land 54" above l and sk" above l and not l l Imaximum level l maximum level l overflowing l i l lindication mark l indication mark l l I l I l l l l l l l l l l Float Voltage l22.13 volts l 22.13 volts l >2.07 volts I t

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l l l _l l l Specificg ,) l l l Not more than l l Gravity l l l .020 below the l l l l l average of all l l l l 21.195, and l connected cells, l l l l greater than l and 2 1.195 for l l l21.200 (b) l 1.205 for the l the average of l l l l average of all l all connected l l l. l connected cells, l cells, l l l l OR l OR l l l l Note (c) l Note (b) l

l. l l l. l (a) Correctu! for electrolyte temperature and level.

(b) Or battery charging <;urrent is less than 2 amps when on charge.

(c) Or bettery charging current is less than 2 amps when on charge. This note is only applicable for a period of 30 days following either a service or performance discharge test.

(1) For any Category A parameter (s) outside the LIMIT (S)'shown, the battery may be considered OPERABLE provided that within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> all the Category B measurements are taken and found to be within their ALLOWABLE VALUES, and provided all Category A and B parameter (s) are restored to within LIMITS within the next 6 days.

(2) For any Category B parameter (s) outside the LIMIT (S) shown, the battery may be considered OPERABLE provided that the Category B parameters are restored to within LIMITS within 7 days.

(3) Any Category B parameter not within its ALLOWABLE VALUE indicates an

. inoperable battery.

ARKANSAS - UNIT 2 3/4 8-9a Amendment No. 54

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I The metering system is provided for accurately measuring the battery '

charging current associated with a fully charged battery. This current is i allowed to be used in lieu of specific gravity as defined by Table 4.8-2.

In order to take battery current measurements, the metering system is placed in service and the main battery disconnect switch is opened. The time r; required to take the current measurement and return the system to normal  ;

condition is less than ten minutes. Although the normal operation of the l D. C. system is maintained during this time (i.e., the battery continues to  !

charge and the charger-provides power to the D. C. loads), the battery main I disconnect switch is open and the battery cannot perform an emergency duty ,

cycle discharge through the metering circuit. Due to the inherent .

requirement for the battery disconnect switch to be open when using the  !

metering system to measure the battery current, an allowance will be made  :

for the battery to be out of service without entering Technical Specification Action statements for a period not.to exceed 10 minutes when l charging current is being measured. During plant conditions where both battery banks are required to be operable, opening of the disconnect switch

, is restricted to one battery at a time.

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ARKANSAS. . UNIT 2 B 3/4 8-2 Amendment No.

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