Q18 — SGFP Turbine Overspeed Trip
059 MFW-K4.05 (2.5)
Given:
Which ONE of the following completes the statement below?
The Steam Generator Feed Pumps have a Turbine Overspeed Trip that prevents the turbine from exceeding a MAXIMUM of ___ rpm.
Which ONE of the following completes the statement below?
The Steam Generator Feed Pumps have a Turbine Overspeed Trip that prevents the turbine from exceeding a MAXIMUM of ___ rpm.
A. 1944
B. 1980
C. 5500
D. 6080
▶ Show Answer & Explanation
✓ D. Correct. The Steam Generator Feed Pumps have a Turbine Overspeed interlock that prevents the turbine from exceeding a MINIMUM of 6080 rpm.
✗ A. Incorrect but plausible. The main turbine has a 108% overspeed trip (1944 RPM).
✗ B. Incorrect but plausible. The main turbine has a 110% overspeed trip (1980 RPM).
✗ C. Incorrect but plausible. 5500 RPM is the design capacity for a SGFP.
Ref: S2.OP-SO.CN-0002 (Steam Generator Feed Pump Operation) | LO: NOS05CN&FDW-16 LO 8 — Identify and describe the Control Room controls, indications, and alarms associated with the Condensate and Feedwater System | Source: New | Cognitive: Lower
Connections
- Related systems: Feed & Condensate
- Related procedures: S2.OP-SO.CN-0002 — Steam Generator Feed Pump Operation
- Related exam: 2019 NRC Written Exam