ILC

Card Set Information

Author:
Anonymous
ID:
135518
Filename:
ILC
Updated:
2012-02-16 09:24:30
Tags:
Primary Containment
Folders:

Description:
Systems
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What would you like to do?


  1. Drywell Pressure Limit
    62 psig
  2. Drywell Temperature Limit
    300oF

    *340oF peak from small steam line break150oF req modes 1,2,3
  3. Suppression Pool Pressure Limits
    62 psig, -1.9 Internal

    2 psig External
  4. Operation of Rx building to Torus Vacuum Breakers
    air operated valves auto open when RB 0.5 psi > DW pressure

    swing check self actuates 1 sec later
  5. Suppression Chamber to DW Vacuum Breakers
    10 valves on ring vent header prevent torus water from being drawn into DW through downcomers and vent pipes post LOCA

    • magnet at disc base holds valves shut
    • mechanically opens when Torus 0.5 psi > DW
    • full open after 1 second
  6. Drywell Cooler Auto Starts
    • Scram - sensed by 60psig in scram air header
    • (unless in LOCKOUT)

    Dampers open (U2 and 1B only)
  7. Drywell Cooler Trips
    • LOCA - divisionalized from Core Spray logic
    • (A,D = div I)
    • (B,C = div II)

    • Electrical-
    • MCC trip on therm or magnetics
    • loss of control power (U2 and 1B)
  8. RCS leakage limits
    In modes 1,2,3:

    • <5gpm UNIDENTIFIED over past 24 hours
    • <25gpm IDENTIFIED
    • <2gpm rise in UNIDENTIFIED past 24 (MODE 1)
  9. LCO 3.6.2.1 Suppression Pool Temperature requirements
    In modes 1,2,3:

    • <95oF w/no testing in progress
    • <105oF w/testing that adds heat
    • <110oF CTP<1% rated

    • If testing adding heat, stop testing if 105oF
    • If 110oF, SCRAM immediate
  10. Equipment drain recirc
    High temp closes discharge valve, opens recirc through cooler.

    High level or low temp will isolate from HX and pump forward.

What would you like to do?

Home > Flashcards > Print Preview