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Exams > 2018 Q80 — EOP-FRHS-1 Entry Conditions and Return to Procedure

2018 Q80 — EOP-FRHS-1 Entry Conditions and Return to Procedure

⚠️ DRAFT
Q80 — EOP-FRHS-1 Entry Conditions and Return to Procedure W/E05-EA2.1 (4.4)
Given:
• The crew is trying to establish flow from the Condensate System to feed 12 SG in accordance with 1-EOP-FRHS-1 (Response To Loss Of Secondary Heat Sink)
• ALL SGs NR levels are off scale low
• 12 SG Pressure is 550 psig and slowly lowering
• Containment Pressure is 6 psig and slowly rising
• Bleed and Feed has NOT been initiated

Which ONE of the following completes the statements below?

1-EOP-FRHS-1 was REQUIRED to be performed because ALL SG NR Levels are less than 15% _(1)_.

In accordance with 1-EOP-FRHS-1, the crew can Return To Procedure in Effect _(2)_.
A. _(1)_ and Total Feedwater Flow to SGs are less than 22E04 LB/HR
_(2)_ when 12 SG WR level starts to rise
B. _(1)_ and Total Feedwater Flow to SGs are less than 22E04 LB/HR
_(2)_ ONLY after 12 SG NR is > than a MINIMUM of 15%
C. _(1)_ ONLY
_(2)_ when 12 SG WR level starts to rise
D. _(1)_ ONLY
_(2)_ ONLY after 12 SG NR is > than a MINIMUM of 15%
▶ Show Answer & Explanation
✓ A. Correct. For Part 1 and IAW EOP-CFST-1, 1-EOP-FRHS-1 was REQUIRED to be performed because ALL SG NR Levels are less than 15% and Total Feedwater Flow to SGs are less than 22E04 LB/HR. For Part 2 and IAW 1-EOP-FRHS-1 Step 19, since Bleed and Feed has NOT been initiated and the condensate line has just been aligned to feed 12 SG, the crew will return to procedure when 12 SG WR level starts to rise.
✗ B. Part 1 is correct. For Part 2, 1-EOP-FRHS-1 Step 19 also uses ANY SG NR is > than a MINIMUM of 15% (adverse) as a criteria to return to procedure and step in effect. Consequently, the candidate could incorrectly conclude that the crew will Return To Procedure in Effect ONLY after 12 SG NR is > than a MINIMUM of 15%.
✗ C. For Part 1, the distractor is partially correct. Consequently, the candidate could incorrectly conclude that 1-EOP-FRHS-1 was REQUIRED to be performed because ALL SG NR Levels are less than 15% ONLY. Part 2 is correct.
✗ D. For Part 1, the distractor is partially correct. Consequently, the candidate could incorrectly conclude that 1-EOP-FRHS-1 was REQUIRED to be performed because ALL SG NR Levels are less than 15% ONLY. For Part 2, 1-EOP-FRHS-1 Step 19 also uses ANY SG NR is > than a MINIMUM of 15% (adverse) as a criteria to return to procedure and step in effect. Consequently, the candidate could incorrectly conclude that the crew will Return To Procedure in Effect ONLY after 12 SG NR is > than a MINIMUM of 15%.
Ref: NOS05FRHS00-02 (HEAT SINK FUNCTIONAL RESTORATION) | LO: NOS05TRP001-08 (REACTOR TRIP OR SAFETY INJECTION) | Source: New | Cognitive: Higher

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