LCO 3.3 Flashcards
(13 cards)
3.3.1
Reactor Protective System (RPS) Instrumentation - Operating
(4 Channels)
VOPT (Mode 1 and 2)
High Log (Mode 2 when less than or equal to 1x10-4%)
LPD/DNBR (Mode 1 and Mode 2 greater than 1x10-4%)
3.3.2
Reactor Protective System (RPS) Instrumentation - Shutdown
(4 Channels)
High Log Power (Modes 3 - 5 if CEAs can be withdrawn)
1 INOP - Trip/Bypass: 1 hr
2 INOP - Trip 1/Bypass 1: 1hr
Same if 1x10-4 bypasses INOP
Fix prior to M2 if M5 was entered.
3.3.3
Control Element Assembly Calculators (CEACs)
3.3.4
Reactor Protective Systems (RPS) Logic and Trip Initiation
3.3.5
Engineered Safety Features Actuation System (ESFAS) Instrumentation
3.3.6
Engineered Safety Features Actuation System (ESFAS) Logic and Manual Trip
3.3.7
Diesel Generator (DG) - Loss of Voltage Start (LOVS)
3.3.8
Containment Purge Isolation Actuation Signal (CPIAS)
3.3.9
Control Room Essential Filtration Actuation Signal (CREFAS)
3.3.10
Post Accident Monitoring (PAM) Instrumentation
NI’s Required?
Modes?
2 Log channels (A and B)
Modes 1-3
3.3.11
Remote Shutdown System
NI’s Required?
Modes?
2 Log Channels (A and B)
Modes 1-3
3.3.12
Boron Dilution Alarm Systems (BDAS)
Modes?
Which NI’s?
Operability Requirements?
Modes 3-6
Two SU Channels required
(Required in 1 hr after entering Mode 3 - less than or equal to 2x10-6%)
Must have alarm at OATC Area
Prompt RESET required for operability
3.3.12
Boron Dilution Alarm Systems (BDAS)
Modes?
Actions?
Bases of LCO?
(Modes 3-6) Immediately
1 INOP - Determine RCS Cb
2 INOP - Independent RCS Cb Sample
(If not met, suspend all operations involving positive reactivity addition)
Safety Analysis for inadvertent dilution event.
Alarms 15 min prior to critical in Modes 3-5
Alarms 30 min prior to critical in Mode 6
