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Exams > 2018 Q58 — SGFP Trip / Manual Load Reduction Rate

2018 Q58 — SGFP Trip / Manual Load Reduction Rate

⚠️ DRAFT
Q58 — SGFP Trip / Manual Load Reduction Rate 054 Loss of MFW-G2.4.49 (3.8)
Given:
• Unit 2 is at 90% Reactor Power and stable

At time 10:00:00
• 21 SGFP trips

At time 10:00:05 (5 Seconds Later)
• The crew initiates the IMMEDIATE ACTIONS of S2.OP-AB.CN-0001 (Main Feedwater / Condensate System Abnormality)
• Turbine Power is stable at 90%
• Turbine RAMP RATES are NOT preset for SGFP runback

In accordance with S2.OP-AB.CN-0001, which ONE of the following completes the statements below?

The crew will initiate a MANUAL Main Turbine load reduction at less than or equal to a MAXIMUM rate of ___ %/MIN.
A. 20
B. 15
C. 10
D. 5
▶ Show Answer & Explanation
✓ B. Correct. IAW S2.OP-AB.CN-0001 IMMEDIATE ACTIONS 2.3.1, "IF RAMP RATES are not preset for SGFP runback, THEN: ADJUST RAMP RATES for less than or equal to 15%/MIN."
✗ A. Incorrect but plausible. All of the distractors are Turbine Ramp Rates that are close to the actual procedural limit of S2.OP-AB.CN-0001. Consequently, ALL of the distractors are plausible.
✗ C. Incorrect but plausible. All of the distractors are Turbine Ramp Rates that are close to the actual procedural limit of S2.OP-AB.CN-0001. Consequently, ALL of the distractors are plausible.
✗ D. Incorrect but plausible. All of the distractors are Turbine Ramp Rates that are close to the actual procedural limit of S2.OP-AB.CN-0001. Consequently, ALL of the distractors are plausible.
Ref: S2.OP-AB.CN-0001 (Main Feedwater / Condensate System Abnormality) | LO: NOS05ABCN01-06 | Source: New | Cognitive: Lower

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