Pre Test Review Flashcards
What are the at power trips blocked by P7?
PRZ Pressure Low
PRZ Water Level High
RCS Loss of Flow
UV on RCP Busses
UF on RCP Busses
RCP Breaker Position
What are the inputs to OT Delta T?
Delta T
Tave
AFD
PRZ Press
What does OT Delta T Protect from?
DNB
What are the inputs for OP Delta T?
Delta T
Tave
What does OP Delta T protect from?
KW / Ft
What starts the CEQ Fans?
1 psi in Containment.
NOT Phase A
What is the function of P4?
+ Low Tavg = FWI
Permits manual block of auto SI Signals
What are the setpoints for P6 while going up in power?
10-10 Amps
What are the setpoints for P6 coming down in power?
6 x 10-11 amps
When does the SR Hi flux at SD alarm blocked clear?
10-10 amps
P6
What are the 4 functions of P10?
Permits manual block of:
- PR Hi Flux Trip, Low Setpoint
- IR Trip
- IR Rod Stop
Also is the backup de-energization of SR
Which rod stops are for auto and manual rod withdrawal?
C1
C2
C3
C4
How are rods affected during a PR NI failure - High?
Rods insert and will not withdraw bc of C2
What is C9?
1 Circ Pump Breaker Closed
CRID II
3/3 Condenser Vac >= 20.6 “Hg
When is AMSAC enabled?
2/2 Turbine Impulse Pressures >40%
When is the runback of the MFP enabled?
> 60% power ish. Actually based on the auto dp setpoint for mfps
What is the only pressurizer level failure that will not cause a trip with no operator action?
Bistable fails high
While PRZ Heaters be protected during a cooldown?
No. Actual level will be less than 17% when indicated on the hot cal
What is the TRM Temperature for aux spray delta T?
320*F
Which pressure channel inputs into QMO-225, East CCP ELO?
NPP-151
Which pressure channel inputs into QMO-226, West CCP ELO?
NPP-153
What must be done if SDM is not within the COLR limits?
Borate to restore within 15 mins
What is QLC-451, VCT Level control primarily responsible for?
Makeup
Starts at 14%. Stops at 24%
Divert trips open at 87%
Has high, Low and Low low alarm. As well as MU Not in Auto
What is QLC-452, VCT Level control primarily responsible for?
Divert
Starts at 78%. Full open at 87%.
Has Low and Low Low alarm
The turbine trip controller maintains temperature at ______ using a maximum of _____ groups of valves.
547*F
2 Groups
How many groups of valves are available for a load rejection?
2 groups for C7A
3 groups for C7B
How do you know how many groups of valves are open on a turbine trip?
Temperature.
10*F differential = 1 group trips open
20*F differential = 2nd group trips open
How many groups are available in steam pressure mode below 541*F?
1 group after going to bypass
What is the ECCS Acceptance Criteria?
Peak Clad Temp < 2200*F
Max Clad Oxidation < 17%
H2 generation < 1% max
Coolable geometry
What are the typical injection pressures and flows for the ECCS Pumps?
CCP 2300# 150-550 gpm
SI 1600# 400-600 gpm
RHR 200# 4500 gpm
What are the tech specs for the accumulators?
Volume 921 - 971 cu ft
Pressure 585 - 658 psig
Boron 2400-2600 ppm
What is QPTR?
Max of all Upper (lower) vs Average of all Upper (lower)
What must be done if AFD is not in target band at > 90% power?
15 mins to restore or get below 90% in another 15 mins
What must be done if you’re between 50-90% power and AFD is not in the target band?
Reduce to < 50% power in less than 30 mins
What are the inputs to Rod Control?
Auctioneered High Tave
Auctioneered High PR NI
MPC-253
How fast do rods move in auto with a 3-5*F mismatch?
8-72 spm
32 steps per degree + 8
What do you do if you’re outside of the ARM?
1 rod out, borate to SDM in 1 hr, power to 75% in 2 hrs
> 1 rod out, borate to SDM in 1 hr or M3 in 6 hrs
What 3 things go into determining which Mode we are in?
Keff
% Rated Thermal Power
RCS Tave
How many RCS / RHR Loops need to be operable in M4?
Any combo of 2 RCS / 2 RHR Loops
In Mode 5 with loops filled, what are the RHR requirements?
2 RHR Loops operable
OR
1 RHR Loop operable and 2 SGs
In Mode 5 with Loops Drained, what are the RHR requirements?
2 RHR Loops Operable, with 1 I/S
What are th RHR Requirements in Mode 6 > or = to 23 ft?
1 RHR Loop Operable
What are the RHR Requirements in Mode 5 when < 23 ft?
2 RHR Loops Operable with 1 I/S
What are the inputs into the Subcooling Meter?
Auctioneered High CETCs or WR RTD Temps
Auctioneered LO RVLIS pressure
What must be done if Tave is < 541*F while critical?
Be in M2 w Keff < 1 in 30 mins
What must be done with reactor critical when Tave is < 539*F?
Immediately place in subcritical position
What is the heat up rate?
60*F / hr
What is the cooldown rate?
100*F / hr
What must be done if ou are outside of your cooldown rate in modes 1-4?
Restore within 30 mins due to brittle fracture concerns
Why is 600 gpm RHR flow sent to L2&3 during a cooldown?
TO keep L3 subcooled during a PRZ Outsurge
Which RHR pump supplies suction to SI Pumps on CL Recirc?
West
Which RHR Pump supplies suction to the CCPs during Recirc Phase?
East
What are the containment temperature limits?
Lower = 60-120*F
Upper = 60-100*F
What are the containment pressure limits?
-1.5 psig to +0.3 psig
What are the U1 SG Low and Low Low trips?
15% and 5%
What are the U2 SG Low and Low Low Trips?
26% and 22%
What are the EDG trips during a SI or LOOP?
Generator Phase Differential
Electronic Overspeed
Manual PB
What is the purpose of raising load to 900-1100 KW quickly after closing the DG output breaker?
Prevents motoring the EDG due to no-load conditions
What will give a Load Cons signal?
LOOP and SI (on same train)
Or
LOOP and CTS (on same train)
What is considered a High Rad area?
100-1000 mrem in 1 hr at 30 cm
What is considered a Locked High Rad area?
> 1000 mrem in 1 hr at 30 cm
WHat is considered a contamination area?
1000 DPM beta gamma on 100 sq cm
Or
20 DPM / 100 sq cm of alpha
What is considered a HIGH contamination area?
> 100,000 DPM / 100 sq cm
What are the 10CFR20 Limits for TEDE?
5 R / yr
What are the admin limits at cook for TEDE?
2 R / year
Which rad monitors cause a CVI?
Upper containment
VRS-1101/1201
Lower will too. But not channel 10s
Which temperature inputs into RPS?
NR Thot
A load rejection at ______ presents the greater short term challenges due to ______
BOL
Lower MTC reactivity feedback allowing for a larger rise in Tave
A load rejection at ______ presents the greater long term challenges due to ______
EOL
Xenon oscillations
XS LD Hx design flow is ______
20 gpm
If outside of the RIL (rod bank low low lit), what must be done?
Emergency borate
If the Rod Bank Low light is like, what does it mean?
May be outside AFD.
Achieve thermal power < 50% immediately
MFP DP variable setpoint looks at _______
Total steam flow
PR N42 failing low will have cause what to happen due to delta I changes?
Lowers OTDT Setpoint
What do amps do on a locked rotor?
Rise
What does speed do on a sheared shaft?
Rise
What must you do with 1 stuck rod?
Verify SDM in 1 hr
What must you do if the TS safety limit for RCS Pressure is exceeded in Mode 1?
2735 psig, be in hot standby within 1 hr
Why would you suspend additions to GDT when it contains > 43,800 curies noble gas?
To prevent an uncontrolled release of contents from exceeding 500 mrem whole body dose at the site boundary
WHat is the cutoff dose where the worker must be a volunteer?
> 25 REM
Which channel of VRS-1500 has automatic actions?
1509, HR Noble gas
How do you determine a new leak rate?
Square root of new DP / Square root of old DP x Original Leakrate
Which SR NIs feed into the audible count rate?
N31 and N32
How does the MT act with MW control IN?
Valves move in attempt to maintain load (may draw more steam if needed)
If you are at 100 cps on the SR NIs, where are you on IR NIs?
~ 10-11
How many REM can be received before you start seeing somatic effects?
Up to 100 REM
