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Details

Main Steam Pressure Control (MSPC)
BWR Systems
10
Other
Not Applicable
07/05/2012

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Cards

Term
MSPC

Describe the normal operating settings of pressure control components.
Definition
-EPR set lower than MPR to control pressure.
-PRO normally set at zero.
-Flow limit set at 110%.
-Control valve limit stop set at 100%.
-Speed/Load changer set at 95%, 107% and 111%.
-Load limit up out of the way.
Term
MSPC

Describe the power supply to speed/load changer and load limit.
Definition
D21.
Term
MSPC

Describe the power supply to the EPR oil pumps.
Definition
MCC-142A.
Term
MSPC

Describe the EPR oil pump running and standby pressures.
Definition
-Normal pressure 240#.
-Standby (auto) starts at 190#.
Term
MSPC

Describe the turbine benchboard power supply (C07).
Definition
Y-30.
Term
MSPC

Describe the regulator output relationship to the control valves.
Definition
40 psig output of the regulator will give 100% opening of the control valves.
Term
MSPC

Describe the relationship between the turbine speed and speed/load changer signal.
Definition
5% error (90rpm) between turbine speed and the speed/load changer will call for 100% travel of the control valves.
Term
MSPC

Describe the purpose of the PRO.
Definition
Manually open control and bypass valves.
Term
MSPC

Describe the purpose of the flow limit.
Definition
-Mechanical stop in the linkage to limit maximum opeining of the control and bypass valves.
Term
MSPC

Describe the function of the load limit.
Definition
Limit load on the turbine to any desired level.
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