ML050450406

Tech Spec Pages for Amendment 54 125 Volt Direct Current Electrical Power Subsystem

ML050450406
Person / Time
Site:	Watts Bar
Issue date:	02/07/2005
From:	NRC/NRR/DLPM
To:
Pickett D, NRR/DLPM, 415-1364
Shared Package
ML050450098	List: ML050030346 ML050450406
References
TAC MC3714
Download: ML050450406 (2)

Text

DC Sources-Operating 3.8.4 SURVEILLANCE REQUIREMENTS (Continued) _

SURVEILLANCE FREQUENCY SR 3.8.4.5 Verify no visible corrosion at 92 days terminals and connectors for the vital batteries.

OR Verify connection resistance for the vital batteries is

• 80 E-6 ohm for inter-cell connections, < 50 E-6 ohm for inter-rack connections, 5 120 E-6 ohm for inter-tier connections, and

• 50 E-6 ohm for terminal connections.

SR 3.8.4.6 Verify no visible corrosion at 92 days terminals and connectors for the DG batteries.

OR Verify connection resistance for the DG batteries is

• 80 E-6 ohm for inter-cell connections, 5 50 E-6 ohm for inter-tier connections, and 5 50 E-6 ohm for terminal connections.

SR 3.8.4.7 Verify battery cells, cell plates, 12 months and racks show no visual indication of physical damage or abnormal deterioration..

SR 3.8.4.8 Remove visible terminal corrosion 12 months and verify battery cell to cell and terminal connections are coated with anti-corrosion material.

(continued)

Watts Bar-Unit 1 3.8-26 Amendment No. 54

DC Sources-Operating 3.8.4 SURVEILLANCE REQUIREMENTS (Continued)

SURVEILLANCE FREQUENCY SR 3.8.4.9 Verify connection resistance for 12 months the vital batteries is 5 80 E-6 ohm for inter-cell connections, 5 50 E-6 for inter-rack connections, S 120 E-6 ohm for inter-tier connections, and < 50 E-6 ohm for terminal connections.

SR 3.8.4.10 Verify connection resistance for 12 months the DG batteries is < 80 E-6 ohm for inter-cell connections,

• 50 E-6 ohm for inter-tier connections, and 5 50 E-6 ohm for terminal connections.

SR 3.8.4.11 ----------------NOTE-------

This Surveillance is normally not performed in MODE 1, 2, 3, or 4.

However, credit may be taken for unplanned events that satisfy this SR.

___________________________________ 18 months Verify each vital battery charger is capable of recharging its associated battery from a service or capacity discharge test while supplying normal loads.

OR Verify each vital battery charger is capable of operating for t 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> at current limit 220 - 250 amps.

(continued)

Watts Bar-Unit 1 3.8-27 Amendment No. 54