Plant 100% with normal chemistry control.
What describes the expected blowdown system liquid and steam (vent) flowpaths?
blowdown steam to the 4th point feedwater shells, liquid to the main condenser
Where are the S/G blowdown flow control valves located?
MSVB 49’ above truck bay
Why do operators isolate blowdown flow to the blowdown tank prior to shifting vent paths between the condenser and the atmosphere?
to allow isolation of all blowdown tank vent paths temporarily during the swap, which prevents a loss of condenser vacuum
What describes the purpose of the steam generator blowdown system?
used in conjunction with the Rx plant sampling and chemical addition to maintain S/G shell chemistry within specification
What is the purpose of closing the steam generator blowdown containment isolation valves on SIS, CDA, or LOP signals?
to preserve the heat sink
What describes the steam generator open cycle blowdown flowpath?
S/G blowdown tank vent aligned to atmosphere, level control aligned to CWS discharge tunnel
You are directed to pump the S/Gs to the CWS discharge tunnel without a nitrogen overpressure. Why?
nitrogen will not support life
