Battery Systems

Card Set Information

Author:
jasonstone808
ID:
99185
Filename:
Battery Systems
Updated:
2011-08-31 16:37:15
Tags:
Battery Cert
Folders:

Description:
Cert Class. Station Battery Systems
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  1. What Nuclear Instruments are powered from 24VDC?
    • D15:
    • SRM 21, 22
    • IRM 11, 12, 13, 14

    • D25:
    • SRM 23, 24
    • IRM 15, 16, 17, 18
  2. What powers 24 VDC Battery Chargers?
    • Div I = 120 VAC via MCC-143 (L-34)
    • Div II = 120 VAC via MCC-133 (L-38)

    [Note that Div I chargers powered from Div II MCC, and vice-versa]
  3. What is the 24 VDC Battery Operability temperature range?
    60F to 90F
  4. Explain the design of the 24 VDC battery system...
    • Two independent systems.
    • Each system has two 24V batteries and two battery chargers.

    Insulated from ground except at load end.
  5. What are the Low and High Voltage setpoints for 24 VDC?
    • Low: 24.25 V
    • High: 29.0 V

    High Volt Shutdown: 29.75 V
  6. What are the Tech Spec and/or TRM implications if one 24 VDC battery charger is out of service?
    • TRM 3.8.2
    • If one or two 24VDC battery subsystems are Inop, must IMMEDIATELY declare associated supported equipment INOP in Modes 1, 2, and 3.
  7. In the event of a SBO (Station Black Out), how long will the essential AND non-essential 250 VDC batteries provide adequate voltage?
    Essential: 4 hours

    Non-Essential: 90 minutes staged intervals
  8. 125 VDC bus voltage HI/LOW setpoints?
    HI: 140 to 141 V

    LOW: 120 to 121 V
  9. Power supplies to 125 VDC battery chargers?
    Div I: MCC-133A via Batt Chargers via D11

    Div II: MCC-143A via Batt Chargers via D21

    Swing: MCC-142A via Swing Charger
  10. Div I 125 VDC major loads?
    • 4KV breaker control power
    • Annunciator panels
    • Emergency lighting

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