Systems Test 4 Flashcards
- LOT 202.44 QDPS*
- *
What will happen to the SG PORVs if power is lost to APC-1 or APC-2?
- APC-1:*
- *Data will not be available on DPUs**
- APC-2:*
- *Fails closed**
- When power returns, valve shifts to manual w/ a setpoint of 1225 psig*
- Can operate SG PORVs locally when APC-2 lost by manipulating 2 valves on actuator assembly.
- Controlled from upper section of APC-2.
- Note:*
- If power to ESF MCC’s are lost, place associated SG PORVs in manual, close the SG PORVs, and dispatch operator to place station blackout power bypass sw. to bypass.
- This returns control back to MCR.
- Train “A” MCCs power SG PORV hydraulic pumps A and D.
- LOT 201.42 SFP Cooling*
- *
If cooling to the SFP is lost, what must be done?
Place 1 FHB HVAC exhaust filter train in service
Take Temp logs on SFP Boron Concentration, Level, and Temperature
Minimizes radioactive release to environment as SFP heats up and radioactive materials come out of the SFP.
- LOT 201.19 DRPI*
- *
What powers DRPI?
- Data Cabinets:*
- *DP003**
- Control Unit:*
- *DP003 / DP004**
- LOT 202.41 Radiation Monitoring*
- *
What radiation detectors would be important for determining a LOCA IRC?
- *RCB Atmosphere (RT-8011)**
- Will isolate on CVI*
Containment Purge (RT-8012/8013)
RCB PAMS (RT-8050/8051)
RCB Area (RT-8052 - 8056)
Refueling Bridge (RT-8099)
- LOT 201.43,44,45 Refueling Operations*
- *
What are the requirements to disengage a fuel assembly from the refueling machine?
“Gripper Mast Down” Light on
“Slack Cable” Light on
Load cell indicates < 480 lbs
- *SR Counts are stable**
- Must call MCR*
Z-Axis tape shows fuel assembly fully inserted
Permission from Core Loading Supervisor
- LOT 201.19 DRPI*
- *
What will cause a rod deviation alarm?
- *Control Bank misalignment of ± 12 steps**
- Any rod and bank*
S/D Banks > 18 steps from full out
- LOT 202.44 QDPS*
- *
What will happen to the Rx Head Vents if power is lost to APC-2?
Will close if opened
Controlled from upper section of APC-2.
- LOT 202.02 Main Steam*
- *
Where does AFW #14 tap off the Main Steam system?
SG “D” PORV line
- LOT 202.44 QDPS*
- *
What powers the various components in QDPS?
- APC-1s and APC-2s:*
- *DP1201 - DP1204**
- DPUs:*
- *DP001/DP002**
- Plasma Displays:*
- *DP001/DP002**
- Demultipliers:*
- *DP005**
- CP002/CP018/ASP*
- RPU-N:*
- *DP006**
- LOT 201.43,44,45 Refueling Operations*
- *
What must the boron concentration of the SFP be if fuel is stored in the SFP?
≥ 2500 ppm
LCO 3.9.13 SFP Minimum Boron Concentration
Applicability: ≥ 1 fuel assembly stored in the SFP racks.
- LOT 202.01 S/G*
- *
What is the normal level and pressure of the SGs?
- SGNR Level:*
- *70.7%**
- Full Load Pressure:*
- *1050 psig**
- No Load Pressure:*
- *1185 psig**
- LOT 201.43,44,45 Refueling Operations*
- *
What conditions will make the operator secure a core alteration?
Loss of communications with the MCR
Loss of audible count rate in the MCR or RCB
SR NI counts double on both
SR NI Counts ↑ 5x on 1 SR Detector
RHR changes by 10 ˚F or 25 ppm boron
- *RCS < 2800 ppm boron**
- Systems that are connected to RCS (Cavity/SFP/RHR)*
Water not clear enough
- *High SFP Temperature**
- Plant Curve Book (118 ˚F)*
Load Limits on Refueling Machine/Aux Hoist exceeded
Communications between FHB/RCB control consoles, Refueling Machine, Fuel Handling Machine, and Rx Engineer in MCR required.
- LOT 201.19 DRPI*
- *
What will cause a rod bottom alarm?
ALL S/D and control banks on bottom
- *ANY S/D rod OR Control Bank A rod on bottom**
- Occurs after ALL S/D rods on top and CB “A” 12 steps off bottom*
- *ANY Control Bank B/C/D rod on bottom**
- Occurs after respective bank 12 steps off bottom*
- Note:*
- Rod Bottom alarm will clear when all S/D rods on top and CB “A” rods 12 steps off bottom.*
- LOT 202.44 QDPS*
- *
The upper section of the APC-2 cabinets provide valve control for which valves?
- *SG PORVs**
- Manual AND Automatic*
- *AFW throttle valves**
- Automatic ONLY*
- *Rx head vent valves**
- Manual ONLY*
SG PORVs controlled from MCR AND ASP.
- LOT 202.01 S/G*
- *
When will the SG Safeties lift?
1285 psig ± 3%
1295 psig ± 3%
1305 psig ± 3%
1315 psig ± 3%
1325 psig ± 3%
- Limits SG pressure to 110% (1413.5 psig) of design pressure (1285 psig) during most severe system transient.
- Located in IVC 58’
Note:
Relieves to atmosphere (Roof)
- LOT 202.44 QDPS*
- *
Where are the QDPS cabinets physically located?
- Train “A”:*
- *Train “A” Sequencer (EAB 10’)**
- APC-A1, APC-A2, DPU A*
- Train “B”:*
- *Train “B” Sequencer (EAB 10’)**
- APC-B1, APC-B2*
- Train “C”:*
- *Train “C” Sequencer (EAB 10’)**
- APC-C1, APC-C2, DPU C*
- Train “D”:*
- *ASP Room (EAB 10’)**
- APC-D1, APC-D2*
- RPU-N:*
- *Relay Room (EAB 35’)**
- LOT 201.42 SFP Cooling*
- *
Where does the suction and discharge lines enter/exit the SFP?
- Suction:*
- *≈ 23’ above the fuel**
- Discharge:*
- *6” below water line (anti-siphon hole)**
- *Discharges in bottom of pool**
Design ensures we cannot drain pool more than 4’.
- LOT 201.43,44,45 Refueling Operations*
- *
What is the minimum water level of the SFP?
- *23 ft**
- Above the top of fuel assemblies in racks*
Basis: Iodine removal of the assumed 99% of the iodine gap activity from a ruptured irradiated Fuel Assembly.
Must secure fuel movements at 62 ft (22.25 ft above fuel racks).
- Note:*
- Top of fuel racks is 39.75’. Fuel sits ≈ 12” farther down.*
- LOT 202.41 Radiation Monitoring*
- *
What are the safety related monitors on RM-23?
CR/EAB HVAC (RT-8033/8034)
SGBD (RT-8022 - 8025)
MSL (RT-8046 - 8049)
Unit Vent (RT-8010A/B)
Containment Atmosphere (RT-8011)
Containment Purge (RT-8012/8013)
High Range Containment Atmosphere (RT-8050/8051)
LWPS Discharge (RT-8038)
FHB HVAC (RT-8035/RT-8036) are on RM-23 but are no longer safety related.
- Note:*
- “A” Detectors powered from DP001 and “C” Detectors powered from DP002.*
- LOT 202.03 Main Turbine*
- *
How are the throttle and governor valves controlled during a turbine startup?
- 0 RPM - 1700 RPM:*
- *Governor Valves full open**
- *Throttle valves control speed**
- 1700 RPM - 1800 RPM:*
- *Throttle valves full open**
- *Governor valves control speed**
Governor valves open in a 2, 3, 1, 4 pattern to minimize stress on the HP turbine 1st stage.
- LOT 201.11 Containment Spray*
- *
While in MODES 1 - 4, how much trisodium phosphate must there be in the containment baskets?
11,500 lbs - 15,100 lbs
LCO 3.6.2.2 Recirculation Fluid pH Control
Applicability: MODES 1 - 4
- Note:*
- 6 Baskets are in containment.*
- LOT 201.43,44,45 Refueling Operations*
- *
What is the storage capacity of the region 1 and region 2 areas of the SFP?
- Region 1:*
- *288**
- Spaced farther apart*
- Region 2:*
- *1681**
Total: 1969