Reactor Trips Flashcards
SR High Flux Trip
Coincidnet, Setpoint, block?
1/2 SR @ 10^5 CPS
Can be blocked with P-6
Autoblocked with P-10
Intermediate High Flux Trip
Coincident, setpoint, block?
1/2 IR @ 25% CE (curent equivalent)
Can be manually blocked when greater than P-10
Power Range High Flux Low set point Trip
Coincident, setpoint, block?
2/4 PR @ 24%
Can be manually blocked when greater than P-10
Power Range High Flux High set point Trip
Coincident, setpiont, block?
2/4 PR @ 108%
Cannot be blocked
High Pressure PZR trip
Coincident, setpoint, block?
2/3 Pressure xmitters @ 2376psig
cannot be blocked
Low Pressure PZR trip
Coincident, setpoint, block?
2/3 Pressure xmitters @ 1844
Enable/Disable with P-7
High PZR water Level
Coinicdent, setpoint, block?
2/3 Level xmitters @ 91%
Enable/Disable with P-7
Low Reactor Coolant Flow Trip
Coincident, setpoint, block?
Above P-8 (40%) 2/3 flow xmitters in 1/3 loops @ 94.68% flow
Above P-7 (10%) 2/3 flow xmitters in 2/3 loops @ 94.68% flow
Auto blocks below P-7
RCP Breaker Open Trip
Coincident, setpoint, block?
Above P-8 1/3 breakers open
Above P-7 2/3 breakers open
Enable/disabled with P-7
RCP Bus UV
Coincident, setpoint, block?
2/3 UV on RCP breakers @ 3120V
Enable/Disable with P-7
RCP Bus UF
coincident, setpoint, block?
2/3 RCP busses @ 58.2Hz
Enable/Disable with P-7
(Trips open all RCP breakers, Indirect Reactor Trip)
S/G Low-Low water level
coincident, setpoint
2/3 NR level xmitters on 1/3 S/G @ 16%
Turbine Trip
coincident, setpoint, block?
2/3 Low EH oil pressure @ 800psig
OR
2/2 Stop Valves Close
Enable/Disable with P-8
SI signals
1.Manual 1/2 pushbuttons
2.Low PZR pressure 2/3 @1715psig
3. Hi Steam Line D/P 2/3 @ on 1/3 lines @100psig
4. Hi CV Pressure 2/3 on 2/2 groups @ 4psig
5. Hi-Hi CV pressure 2/3 on 2/2 groups @ 10psig
6. Hi steam line flow with Low Tavg or Low Steam Line Pressure
OT▲T
Variable,2/3 Loop ▲T at setpoint
2% below setpoint causes runback