3.3 Instrumentation Flashcards
3.3.1 DAS Automatic Actuation
Following shall be FUNCTIONAL
1. SGWR Level Low(a) MODES 1 - 4(b), 1 per SG
2. Hot Leg Temp High MODES 1 - 5(c) 1 per Hot Leg
3. PZR Level Low MODES 1 - 5(d) 2 channels
4. Containment Temp High MODES 1 - 4 2 channels
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- NOTE -
Separate condition entry is allowed for each actuation function.
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A. One or more automatic functions with one or more channels not FUNCTIONAL, restore to FUNCTIONAL status within 14 days.
(a) DAS ATWS mitigation functions of reactor trip and turbine trip actuation are only required
in MODE 1.
(b) With the RCS not being cooled by the normal residual heat removal system (RNS).
(c) With the RCS pressure boundary intact and pressurizer level ≥ 20%. Not required to be
FUNCTIONAL in MODE 5 during RCS vacuum fill operations.
(d) With the RCS not VENTED and CMT actuation on Pressurizer Level - Low not blocked.
3.3.2 Feedwater Flow
Caldon/Cameron Leading Edge Flow Meter (LEFM) CheckPlus system feedwater flow calorimetric input shall be FUNCTIONAL
APPLICABILITY: MODE 1 with THERMAL POWER > 3366 MWt
ACTIONS
A. LEFM CheckPlus system not FUNCTIONAL
A.1 Initiate action to verify calorimetric power is utilizing feedwater flow input from venturi elements IMMEDIATELY AND
A.2 Restore LEFM CheckPlus to FUNCTIONAL within 48 hours
B. Required action and completion time not met
B.1 Reduce THERMAL POWER to ≤ 3366 MWt IMMEDIATELY
