ML20203L966

Proposed Tech Specs Updating Dummy Load Profiles for Testing of Emergency Battery Loading Conditions for Postulated Accident Conditions

ML20203L966
Person / Time
Site:	Hatch
Issue date:	08/19/1986
From:	GEORGIA POWER CO.
To:
Shared Package
ML20203L964	List: ML20203L960 ML20203L966
References
TAC-62744, NUDOCS 8609020103
Download: ML20203L966 (3)

Text

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) s

2. The pilot cell specific gravity, corrected to 77*F, is 2 1.205,

3. The pilot cell voltage is 2 2.0 volts, and

4. The overall battery voltage is 2 120 volts.

b. At least once per 92 days by verifying that:

1. The voltage of each connected cell is 2 2.0 volts under float charge and has not decreased more than 0.17 volts from the value observed during the original acceptance test,

2. The specific gravity, corrected to 77*F, of each con-nected cell is 2 1.205 and has not decreased more than 0.02 from the value observed during the previous test, .

and

3. The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

c. At least once per 18 months by verifying that:

1. The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration,

2. The cell-to-cell and terminal connections are clean, tight, free of corrosion and coated with anti-corrosion material, and

3. The battery charger will supply at least 400 amperes at a minimum of 129 volts for at least .4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

d. At least once per 18 months, during shutdown, by verifying that either:

1. The battery capacity is adequate to supply and maintain .

in OPERABLE status all of the actual emergency loads for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> when the battery is subjected to a battery service test, or

2. The battery capacity is adequate to supply a dummy load of the applicable profile given in Figure 3.8.2.3-1 while _. I maintaining the battery terminal voltage 2 105 volts.

0605)20103 860019 PDR ADOCK 00000366 p PDR HATCH - UNIT 2 3/4 8-14 Proposed TS/0066q/7941-1

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) l

3. At the completion of either of the above tests, the battery charger shall be demonstrated capable of recharg-ing its battary at a rate of at least 150 amperes while supplying normal D.C. loads. The battery shall be charged to at least 95% capacity in s 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

e. At least once per 60 months during shutdown by verifying that the battery capacity is at least 80% of the manufacturers rating when subjected to a performance discharge test. This performance discharge test shall be performed subsequent to the satisfactory completion of the required battery service test.

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l HATCH - UNIT 2 3/4 8-15 Proposed TS/0066q/7941-1 L.

LOAD PROFILE

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Figure 3.8.2.3-1 "Dunny" Load Profiles for Station Service Batteries 2A and 2B

. HATCH - UNIT 2 3/4 8-15a L ' Proposed TS/0000/7941-1

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