Systems Test 3 Flashcards

Question 1

Q

LOT 201.14 PZR Pressure & Level*
- *

At what pressure will the PORV (PCV-655A) lift when COMS is armed?

Answer

A

70 - 200 ˚F:*
*515 psig**
220 - 380 ˚F:*
*730 psig**

Uses Auct Low WR T_H / PT-403

Note:*
Normal PORV setpoint is ≈ 2335 psig. (Master pressure controller 87.5%)*

Question 2

Q

LOT 202.36 Essential Chilled Water*
- *

When will the running and standby essential chillers start on a LOOP / SI? (ESF DG Sequencer)

Answer

A

Standby:*
*35 sec**
(Chilled Water Pump / Chiller Oil Pump)*
*65 sec (30 sec prelube cycle)**
Essential Chiller*
Running:*
*240 sec**
(Chilled Water Pump / Chiller Oil Pump)*
*270 sec (30 sec prelube cycle)**
Essential Chiller*

Running essential chiller must complete 135 sec post lube cycle before it can be restarted on ESF DG sequencer.

Note:
ESF sequencer bypasses the 30 min anti-recycle timer permissive

Question 3

Q

LOT 201.27 Containment Combustible Gas*
- *

What are the sources of H₂ during a LOCA?

Answer

A

Major Source:*
*Radiolytic decomposition of water ****

Other Sources:
Zirc water reaction **
H₂ from the RCS
Max is 1190 scf
Corrosion of metals and paint in containment
Zinc-based paints & galvanized steel
Aluminum
Less of a source than zinc

Note:*
Radiolytic decomposition of water and Zirc water reaction are variable and will increase with fuel damage*

Question 4

Q

LOT 201.18 Rod Control*
- *

What does the Rod Control Startup Switch reset?

Answer

A

POSSUM:*
*P/A Converter**
*Bank Overlap Unit**
*Step Counters**
*Slave Cyclers**
*Urgent Failures**
*Master Cycler**

Located on CP005.

Question 5

Q

LOT 201.18 Rod Control*
- *

How is the T_error signal generated in the Rx Control Unit?

Answer

A

T_error = (T_ref - T_ave) + (Turb Load - NI power)*
*T_ref → Turbine Impulse Pressure (PT-505)**
*T_ave → Auctioneered High T_ave (T-412A/422A/432A/442A)**
*Turb Load → Turbine Impulse Pressure (PT-505)**
*NI Power → Auctioneered High PR NIs (NI-41/42/43/44)**

Turbine Load - NI Power Portion:*
*Used for fast response during transients / load stability**
*Passes through Rate comparator**
Rate of change produces error output*
Steady state results in no output*

Note:
T_error meter on CP005

Question 6

Q

LOT 201.13 ECW*
- *

What will auto start/stop the ECW pumps?

Answer

A

Auto Start:*
*ESF DG Sequencer (25 Sec)**
MODES I, II, III*
*CCW Header Pressure - Low (76 psig) [15 sec TD]**
*ECW Header Pressure - Low (30 psig) [2/3] [15 sec TD]**
Low Pressure on other two trains*
Auto Stop:*
*Discharge Valve not 95% open after 25 sec**
N/A for SI*

Note:*
15 Sec TD is to prevent inadvertant train S/U during transient conditions.
Discharge valve must be open after 25 sec b/c ECW pump does not have a recirc line to protect the pump

Question 7

Q

LOT 202.36 Essential Chilled Water*
- *

What ECW pond temperature would make the Essential Chilled Water system inoperable?

Answer

A

< 41 ˚F

Per POP02, declare inoperable in MODES 1 - 4.

Question 8

Q

LOT 201.18 Rod Control*
- *

What provides an accurate indication of control rod bank step count positions by counting the up down pulses from the Rx Control Unit?

Answer

A

Pulse to Analog Converter

Located in back of DC hold cabinet.

Note:*
During Rx S/U, resets when operators reset the S/U Switch.
During Dropped rod, have to use manual mode to reset bank to height of dropped rod

Question 9

Q

LOT 201.12 CCW*
- *

What are the important levels in the CCW Surge Tank?

Answer

A

83.3%:*
*High Alarm**
74%:*
*Makeup Valve Closes**
68.75%:*
*Makeup Valve Opens**
66.7%:*
*Low Alarm**
64.6%:*
*1^st Low Level Isolation**
61.5%:*
*2^nd Low Level Isolation**
56%:*
*Baffles Begin**
49%:*
*Compartment Level - Low Alarm**
8.3%:*
*Compartment Level - Low 2 Alarm**

Demin water normally fills CCW Surge Tank. (Auto)
RMWST can fill the CCW Surge Tank. (Manual)

Question 10

Q

LOT 201.14 PZR Pressure & Level*
- *

What is the basis for the size of the PZR?

Answer

A

Enough Water:*
*Keep Heaters covered during step load increase of 10%**
Enough Steam:*
*Accomodate 50% load reduction w/o reaching PZR LVL - High (92%)**
w/ Rods and Steam Dumps*
*After PZR LVL - High (92%) Rx trip, will not lift safety valves**
After Rx Trip AND Turbine Trip:*
*No SI**
*PZR will not empty**

Question 11

Q

LOT 201.07 Rx Makeup System*
- *

What will make the makeup stop valves (FCV-0110B/FCV-0111B) auto close?

Answer

A

Total Makeup Flow Deviation:*
*± 15 gpm [15 sec TC]**
BA Flow to Blender Deviation:*
*± 2 gpm [15 sec TC]**

Question 12

Q

LOT 201.09 RHR*
- *

What happens in the RHR system during a SI?

Answer

A

RHR HX Bypass Closes

RHR HX TCV Valve Full Open

RHR Pumps Trip

*CCW from RHR HX opens**
CCW pump mini-flow concerns*

Question 13

Q

LOT 201.12 CCW*
- *

What will cause the thermal barrier isolation valve to shut?

Answer

A

CCW Flow - High (60 gpm)

CCW Temp - High (187 ˚F)

Protects CCW piping from thermal barrier HX leak.

Switches located on CP004.

Two in-line backpressure sensing valves provide backup

Start to close at 120 psig
Full close at 150 psig

Note:*
Backpressure sensing valves auto-reset when pressure drops below setpoint*

Question 14

Q

LOT 201.10 ECCS*
- *

What is the system lineup during hot leg recirc?

Answer

A

2 ECCS trains injecting into Hot Legs

1 ECCS train injecting into Cold Leg

LHSI and HHSI mini-flow valves closed

Taking Suction from Emergency Sumps

HHSI and LHSI are operated together. Never align HHSI to Hot leg and LHSI to Cold leg or vice versa.

Note:*
Cold Leg Recirc is the exact same except all 3 ECCS trains injecting into cold legs.*

Question 15

Q

LOT 202.38 FHB HVAC*
- *

What cools the components in the FHB HVAC System?

Answer

A

MAB Chill Water:*
*FHB HVAC Supply**
*Temporary FHB Supplemental Cooling AHU**
Only used to reduce heat during cask loading*
Essential Chill Water:*
*ECCS Pump Room**
*Recirc Valve Room**
*SF Pump Room**
TSC Chill Water:*
*PASS Station**

Question 16

Q

LOT 201.09 RHR*
- *

Which RHR trains are used to transfer refueling water from the refueling cavity to the RWST at the end of a refueling operation?

Answer

A

RHR Train “B”

RHR Train “C”

Flow is controlled by throttling the respective train IRC or ORC isolation valve to the RWST

Note:
Do not use train that is selected for shutdown cooling.

Question 17

Q

LOT 201.10 ECCS*
- *

What are the four phases of a DBA LOCA?

Answer

A

*Blowdown**
Begins with LOCA and ends with RCS pressure = CTMT pressure*
*Refill**
Water at bottom of the reactor vessel and reaches the bottom of the fuel rods via addition of ECCS (Accumulators and SI pumps).*
*Reflood**
Rx vessel filled with water*
Core temperature rise has terminated*
Core temperatures have been reduced to their long term steady state level.*
*Long Term Recirculation**
Cold Leg Recirc (1^st Phase)*
Hot Leg Recirc (2^nd Phase)*
Hot Leg Recirc starts 5.5 hrs (Operator Action) after start of LOCA and cools upper head and prevents boron precipitation.*

Question 18

Q

LOT 201.14 PZR Pressure & Level*
- *

How many PZR heaters are there and what is the KW rating / heater?

Answer

A

117 Heaters

*17.95 KW / Heater**
2101 KW Total*

LCO 3.4.3 PZR

Applicable MODES 1-3

Requires 2 groups (A/B) w/ 175 KW each

Question 19

Q

LOT 201.09 RHR*
- *

What trips the RHR pumps?

Answer

A

SI

RHR Flow - Low (925 gpm [5 sec TC])

CP001 Indications:

Amps
Flow

Question 20

Q

LOT 201.10 ECCS*
- *

What are the Emergency Core Cooling System (ECCS) acceptance criteria?

Answer

A

Coolable Geometry

Long-Term cooling

Cladding Oxidation
≤ 17% the total cladding thickness before oxidation.

*Peak Cladding Temperature**
≤ 2200 ˚F*
*H₂ Generation**
≤ 1% the total amount of H₂ produced from all metal surrounding the fuel reacting*
(excludes metal around plenum volume)*

DBAs:

LOCA
SLB
Fuel Handling Accident

Question 21

Q

LOT 201.07 Rx Makeup System*
- *

What will auto close the RMW non-essential service isolation valves? (FV-7663/FV-7659)

Answer

A

*SI**
SI Train “B” (FV-7663)*
SI Train “C” (FV-7659)*

RMWST Level (54%)

RMWST Level (54%) will also isolate the RMWST sample line (FV-7664). (SI will not)

Note:*
Makeup to CCW surge tank and SFP will NOT be secured.*

Question 22

Q

LOT 201.13 ECW*
- *

What is the minimum level and max temperature of the ECW pond as required by LCO 3.7.5 Ultimate Heat Sink?

Answer

A

Level:*
*≥ 25.5 ft**
Max Level 26 ft (FSAR)*
Temperature:*
*≤ 99 ˚F**

Pond sized to have a 30 day cooling water supply to safely shutdown and cooldown both Units while maintaining a heat sink for heat removal

Note:*
ECW Bay LVL indication and alarms located on CP002
ECW Bay LVL - Low 2 (14.96 ft) for LCO 3.7.5 entry.

Question 23

Q

LOT 202.37 EAB/CR HVAC*
- *

During a DBA, what must control room personnel dose be limited to IAW 10CFR50?

Answer

A

≤ 5 Rem Whole Body

Question 24

Q

LOT 201.10 ECCS*
- *

What valves in the ECCS have a power lockout feature?

Answer

A

*HHSI/LHSI Hot leg injection valves (MOV-008/MOV-019)**
100% Power: Closed w/ power locked out*
CP-001*
*Accumulator outlet valves (MOV-039)**
100% Power: Open w/ power locked out*
CP-001 / ASP*

No accumulator pressure / level indicators exist on ASP!!

Note:*
2 transfer switches for accumulator outlet valves. 1 transfers control and VPI and the other transfers power lockout feature.*

Question 25

Q

LOT 201.12 CCW*
- *

What will happen in the CCW system during a SI?

Answer

A

*All 3 CCW pumps start**
20 Sec on ESF DG Sequencer*
Will start even if switches on CP001/CP002 are in off*
*Opens CCW HX outlet and closes bypass valves**
Full flow through HX*

Isolates non-ESF loads

*Aligns CCW to RCFCs**
Secures RCB Chill Water*
*Opens RHR HX outlet valves**
CCW Min Flow requirements*

Note:*
Must re-align cooling to SFP HXs in 2.5 hrs.*

Question 26

Q

LOT 201.08 BTRS*
- *

What is the limiting temperature and component for the BTRS?

Answer

A

130 ˚F

RCP Seals

Limit temperature to 115 ˚F to allow CCPs to add 15 ˚F.

Question 27

Q

LOT 201.12 CCW*
- *

What will happen in the CCW system when the CCW Surge tank reaches 61.5%? (2^nd Low Level Isolation)

Answer

A

*Isolates CCW Header**
Isolates RCP Upper/Lower Bearing Coolers, Thermal Barrier, RCP Motor Air Coolers, SFP HX, PASS Coolers*

CCW Train “B” → CCP “B” and Seal Water HX

CCW Train “C” → CCP “A” and PDP

*Opens RHR Outlet Valves for running CCW Pumps ONLY**
Min flow requirements*

Note:*
As soon as CCW common header isolated, standby CCW pump will start on CCW Header Pressure - Low (76 psig)*

Question 28

Q

LOT 201.10 ECCS*
- *

What will cause an SI auto recirculation signal?

Answer

A

SI Signal

AND

*RWST Level - Low 2 (≤ 75,000 gal) [1/1]**
Each lvl switch provides signal for it’s train only*

Closes HHSI AND LHSI pump mini-flow valves.

When ≥ 1 valve for each pump closed:

Opens containment sump → SI suction header Isolation valve.

RWST → SI suction header isolation valve must be manually closed by operator. (CP001)

Note:*
Reset and RWST lvl indication are located on CP001*

Question 29

Q

LOT 201.13 ECW*
- *

What will happen in the ECW system once a ECW pump is started?

Answer

A

Starts self cleaning strainer motor

*Starts to Open Discharge Valve after 10 sec**
If not open after 25 sec, pump trips (N/A for SI)*

Opens chemical injection valve for associated bay

*Opens Blowdown Valves (N/A for train 2A)**
Maintain CP002 switches in CLOSE so doesn’t really happen*
*Starts ventilation fans**
Must be manually secured*

Discharge Valve MCC switch in local prevents discharge valve opening when ECW pump starts.
Self Cleaning strainer does not have switch in MCR.

Note:*
Discharge valve will shut 2 mins after ECW pump secures to prevent draining ECW piping to ECW pond and thus preventing water hammer on pump S/U.*

Question 30

Q

LOT 201.13 ECW*
- *

What will cause a CCW standby train not selected alarm on CP002?

Answer

A

2 ECW/CCW train selector switches in “OFF”

Question 31

Q

LOT 201.18 Rod Control*
- *

What causes a rod control power cabinet urgent failure?

Answer

A

*Logic Error**
0 Current sent to stationary and movable grippers at same time*
*Regulation Error**
Current doesn’t match order or Full current for too long*
*Phase Failure**
Excessive voltage ripple*
*Multiplex Error**
Wrong rod getting current*
*Rod Holdout switches out of position**
*Loose Circuit Card**

Stops Auto/Manual rod motion
Individual Bank rod motion will still work
Sends reduced current signal to affected group movable/stationary grippers

Note:*
Non-Urgent is a loss of 1 of the 4 power supplies and will not affect system operation.*

Question 32

Q

LOT 201.14 PZR Pressure & Level*
- *

What T_avg is used to calculate PZR program level?

Answer

A

Auctioneered High T_avg

Compares selected controlling channel level (LT-465 or LT-467) to program level to determine demand to FCV-0205.

Question 33

Q

LOT 202.38 FHB HVAC*
- *

How many FHB HVAC exhaust trains must be OPERABLE during movement of irradiated fuel?

Answer

A

*One Train**
*OR**
*One Train Capable of being OPERABLE in 2 hrs**

TRM 3.9.12 FHB Exhaust Air System

Question 34

Q

LOT 201.14 PZR Pressure & Level*
- *

What is the effect of indicated PZR level for the following conditions?

Reference Leg Break
Diaphragm Failure
Reference Leg Heating

Answer

A

Reference Leg Break:*
*Less Mass → D/P ↓ → L_ind↑**
Diaphragm Failure:*
*D/P ↓ → L_ind↑**
Reference Leg Heating:*
*Less Mass → D/P ↓ → L_ind↑**
w/o compensation*

Question 35

Q

LOT 201.14 PZR Pressure & Level*
- *

What are the important PZR Master pressure controller setpoints?

Answer

A

PCV-655A:*
*87.5%: Opens**
*75%: Closes**
Spray Valves:*
*72%: Full Open**
*40.5%: Start to Open**
Control Heaters:*
*34.5%: Zero Power**
22%: NOP*
*15.5%: Full Power**
B/U Heaters:*
*14.5%: Turn Off**
*9.5%: Turn On**

Question 36

Q

LOT 202.38 FHB HVAC*
- *

What will cause a FHB HVAC Emergency Operating Actuation Signal?

Answer

A

SI

*High Radiation (5x10^-4 ^µCi/_cc)**
RT-8035 OR RT-8036*

High Radiation Signal will drop out after 100 sec (Regardless if High Rad clear) to allow reset on CP-022.

Question 37

Q

LOT 201.14 PZR Pressure & Level*
- *

While operating in MODE 1, what is your PZR Pressure DNB limit?

Answer

A

2200 psig

LCO 3.2.5 DNB Parameters

Applicable: MODE 1

Question 38

Q

LOT 201.10 ECCS*
- *

In order for the RWST to be OPERABLE in MODES 1 - 4, what must water volume and boron concentration be?

Answer

A

≥ 458,000 gallons

2800 ppm - 3000 ppm

LCO 3.5.5 RWST

Applicable: MODES 1 - 4

Question 39

Q

LOT 201.09 RHR*
- *

When is RHR placed in service?

Answer

A

≤ 350 ˚F

*≤ 332 psig**
Interlock to open MOV-060/MOV-061*

No auto close features for MOV-060/MOV-061.

Question 40

Q

LOT 201.14 PZR Pressure & Level*
- *

At what PZR level will the heaters trip off?

Answer

A

*17% [1/2]**
LT-465/467 OR LT-466/467*

Backup heaters will turn back on if in auto once PZR LVL > 17%. [2/2]

Note:*
For LOOP / SI, B/U heaters control switch must be cycled to turn back on.*

Question 41

Q

LOT 201.10 ECCS*
- *

At what RCS pressures will the ECCS Accumulators, HHSI pumps, and LHSI pumps inject into the RCS Cold Legs?

Answer

A

HHSI:*
*< 1600 psig**
Accumulators:*
*590 - 670 psig**
LHSI:*
*< 300 psig**

Receive water from RWST.

Note:*
During DBA, Accumulators will inject 1^st.*

Question 42

Q

LOT 201.07 Rx Makeup System*
- *

What powers the RMW pumps, BAT pumps, and CCPs?

Answer

A

RMW Pump A:*
*MCC E1C2**
RMW Pump B:*
*MCC E1B4**
BAT Pump A:*
*MCC E1C4**
BAT Pump B:*
*MCC E1A4**
CCP A:*
*E1C**
CCP B:*
*E1A**

C-B-C-A-C-A (2444)

Question 43

Q

LOT 201.18 Rod Control*
- *

What is the purpose of using bank overlap?

Answer

A

Gives more uniform reactivity rate

Used for the control banks ONLY.
S/D banks not overlapped b/c they will not be used while critical.

Note:*
The bank selector switch must be in Auto or manual to maintain bank overlaps during rod movement.*

Question 44

Q

LOT 201.13 ECW*
- *

What will auto start/stop the ECW traveling screens?

Answer

A

Auto Start:*
*SI**
*High Screen D/P (5.5”) w/ Screen Wash Pressure ≥ 63 psig**
Resets at 4.5” (Will run for 4 mins after reset)*
Auto Stop:*
*Sreen Wash Pressure < 63 psig**
N/A for SI*
*∆Level < Setpoint**

Question 45

Q

LOT 201.14 PZR Pressure & Level*
- *

What is the PZR Program Level for 0% RTP and 100% RTP?

Answer

A

0% RTP (567 ˚F):*
*25%**
100% RTP (593 ˚F):*
*57%**

At actual 100% RTP (592 ˚F) PZR Level will be 55.7%.

Question 46

Q

LOT 201.09 RHR*
- *

Which pressure transmitters provide the open permissive for the RHR Suction Valves? (MOV-060/MOV-061)

Answer

A

RHR Train “A”:*
*MOV-060A: PT-405**
*MOV-061A: PT-406**
RHR Train “B”:*
*MOV-060B: PT-406**
*MOV-061B: PT-407**
RHR Train “C”:*
*MOV-060C: PT-407**
*MOV-061C: PT-405**

Power Supplies:

PT-405: Train “A”
PT-406: Train “B”
PT-407: Train “C”

Question 47

Q

LOT 201.12 CCW*
- *

What systems operate at a higher pressure than CCW?

Answer

A

*RHR HX**
*RCP Thermal Barrier**
*Letdown HX**
*Excess Letdown HX**
*RCDT HX**
*Primary Sample Coolers**
*SFP HX**

Question 48

Q

LOT 201.27 Containment Combustible Gas*
- *

What are the sample points for the H₂ monitors?

Answer

A

Top of Containment Dome

Above S/Gs (S/G C/D)

Inside S/G Compartment (S/G C/D)

Inside Primary Shield (S/G A/B)

Controlled from CP002

Note:*
H₂ monitor “B” penetrations used by PASS*

Question 49

Q

LOT 201.10 ECCS*
- *

In order for the accumulators to be OPERABLE in MODES 1 - 3 w/ PZR pressure > 1000 psig, what must water volume and boron concentration be?

Answer

A

Water Volume:*
*8800 gal - 9100 gal**
Boron Concentration:*
*2700 ppm - 3000 ppm**

LCO 3.5.1 Accumulators

Applicable: MODES 1 - 3

Question 50

Q

LOT 201.07 Rx Makeup System*
- *

What are the different ways an operator can inject boron into the RCS?

Answer

A

BAT:*
*Charging Line**
Normal / Alt. Immediate: Flow limited by FCV-0110A (0-100 gpm)*
Emergency: BAT pump flowrate (125 gpm)*
*RCP Seal Injection**
5 ^gal/_^min per pump*
*Gravity Feed**
CV-0333 / CV-0226*
RWST:*
*Charging Line**
MOV-112C / MOV-113B*
BTRS:*
*Demins**

The emergency boration path through the charging line, the gravity feed path, and the RWST path are all considered “Emergency Boration.”

Note:*
VCT Level - Low 2 (3%) will close MOV-112B/MOV-113A and prevent normal boration.*

Question 51

Q

LOT 201.07 Rx Makeup System*
- *

What will auto start/ stop the BAT pumps?

Answer

A

Auto Start:*
*VCT Level (28%)**
200 gpm blend flow (RMWST/BAT)*
*Manual / Borate Initiated**
Manual: 200 gpm blend flow (RMWST/BAT)*
Borate: Flowrate (User Defined 0-100 gpm)*
Auto Stop:*
*VCT Level (48%)**
Trip:*
*Overload**

Can be controlled from ASP.

Note:*
Unlike RMW pumps that trip on low level, the BAT pumps have no low level trip.*

Question 52

Q

LOT 201.12 CCW*
- *

What CCW loads isolate when the CCW Surge tank reaches 64.6%? (1^st Low Level Isolation)

Answer

A

HXs:*
*Letdown HX**
*Excess Letdown HX**
*RCDT HX**
Evaporators:*
*Boron Recycle Evaporator**
*LWPS Evaporator**
Sample Coolers:*
*Boric Acid Sample Cooler**
*Primary Sample Coolers**
Radiation Monitors:*
*S/G Blowdown Rad Monitor**
*BRS Rad Monitor**

Question 53

Q

LOT 202.37 EAB/CR HVAC*
- *

What is the required D/P across the CR HVAC Makeup and Cleanup filters?

Answer

A

Cleanup:*
*< 6.0” H₂O**
Makeup:*
*< 6.1” H₂O**

Note:
Located on CP022

Question 54

Q

LOT 202.37 EAB/CR HVAC*
- *

What is the CR HVAC system response following an SI or High Rad?

Answer

A

*Makeup Supply Damper Opens**
*Makeup Fan Starts**
*Makeup Discharge Damper Modulates to maintain 1000 cfm**
FCV-9584/9585/9586*
*Cleanup Fan Starts**
*Supply Fan Starts**
*Return Fan Starts**
*Return Damper Opens**
FV-9675/9676/9677*
*Kitchen / Toilet exhaust fan Stops**

For an SI:

EAB AHUs Start
Battery Room Exhaust Fan Starts
MAB HVAC Emergency AHU Starts

Note:*
Can be done manually on CP022*

Question 55

Q

LOT 202.37 EAB/CR HVAC*
- *

How much air flow is present in the following sections of the CR HVAC system?

Supply Fan Discharge
Recirculation Flow
Cleanup Flow
Makeup Flow

Answer

A

Supply Fan Discharge:*
*17400 cfm**
Recirculation Flow:*
*16400 cfm**
Cleanup Flow:*
*6000 cfm**
1000 cfm (Fan) + 5000 cfm (Recirc Flow)*
Makeup Flow:*
*1000 cfm**
Maintained by discharge damper*

Question 56

Q

LOT 201.07 Rx Makeup System*
- *

What will auto start/stop the RMW pumps?

Answer

A

Auto Start:
VCT Level (28%)
200 gpm blend flow (RMWST/BAT)
Manual / Dilute / Alt Dilute Initiated
Manual: 200 gpm blend flow (RMWST/BAT)
Dilute / Alt Dilute: Flowrate (User Defined 0-300 gpm)

Trip:*
*RMWST Level (5.6%)**

Makeup will secure at VCT Level (48%) but operator must secure RMW pump.

Question 57

Q

LOT 201.10 ECCS*
- *

When must all HHSI pumps be inoperable per tech specs?

Answer

A

*MODE 5**
*MODE 6 w/ Rx Vessel Head on**

LCO 3.5.3.2 ECCS Subsytems - T_avg ≤ 200 ˚F

Question 58

Q

LOT 202.38 FHB HVAC*
- *

What will happen on a FHB HVAC Emergency Operating Actuation Signal?

Answer

A

Opens:*
*Relief Supply Dampers (D-001/D-037)**
Relief Damper off closed seat → Main Supply Fans to Trip → D/P Damper (D-138) to Close*
*Exhaust Filter Inlet Dampers (D-033/D-034)**
*Exhaust Filter Outlet Dampers [Modulates] (D-146/D-147)**
Shuts:*
*Bypass Line Dampers (D-036/D-162)**
Starts:*
*ALL (3) Main Exhaust Fans**
*ALL (3) Exhaust Booster Fans**

Question 59

Q

LOT 201.13 ECW*
- *

What loads does ECW supply?

Answer

A

Essential Chillers

ESF DGs:*
*Jacket Water HX**
*Turbo Charger Combustion Air Cooler**
*Lube Oil HX**
CCW:*
*CCW HX**
*CCW Pump Supplementary Cooler**
Cools area cooler and CCW pump motor*

Question 60

Q

LOT 201.18 Rod Control*
- *

What is the RDMG’s output voltage and frequency?

Answer

A

260 VAC

59 Hz

Prevents alternate power supply connection

Note:*
Control switches to operate RDMGs are on local control panel only.*

Question 61

Q

LOT 201.18 Rod Control*
- *

When performing a Rx startup, how many steps until bank overlaps begin?

Answer

A

137 steps

Control Bank A at 137 steps, Control Bank B will begin to lift.
Process repeated for control bank C and control bank D.

Question 62

Q

LOT 201.14 PZR Pressure & Level*
- *

How many RCPs are required for PZR Spray?

Answer

A

*RCP 1A ONLY**
*OR**
*RCP 1D ONLY**
*OR**
*RCPs 1B AND 1C**

Question 63

Q

LOT 201.14 PZR Pressure & Level*
- *

When is COMS required to be armed?

Answer

A

≤ 350 ˚F

PCV-655A (Auct Low WR T_H / PT-403)
PCV-656A (Auct Low WR T_C / PT-404)

COMS controller completely independent of master pressure controller.

Note:*
Manually armed on CP004*

Question 64

Q

LOT 201.10 ECCS*
- *

What will auto open the accumulator discharge valve? (MOV-039)

Answer

A

SI

*RCS Pressure ≥ P-11**
PZR Pressure ≥ 1985 psig [2/3]*

Answer 65

A

*≤ 10 Curies**
Excludes Tritium and entrained Noble Gases*

LCO N/A to WMT D/E/F b/c they have a berm.

Used for temporary tanks.

Answer 66

A

*Blowdown valves shut**
Once SI clears, must take valves to shut then back to auto on CP002*

CP002 switch in AUTO:

ECW Train 2A: Valve opens
ALL other ECW Trains: Cycles Open/Shut with ECW pump starting/securing

Valve physically located on MAB 10’ at ECW Sump. (No local switch)

Note:
By procedure, every blowdown valve with exception of train 2A is maintained in the CLOSE position on CP002

Answer 67

A

*+ 5% Level Deviation**
Controlling Channel Level (LT-465/467) > 5% above Program Level*

Done to preheat PZR insurge.

Note:*
Charging flow at +5% Level Deviation: 50 gpm
Charging flow at -5% Level Deviation: 300 gpm

Answer 68

A

Normal:*
*Well Water**
Alternate:*
*Unit 2 ECW Sump via ECW 2A return line**

Unit 1 Sump is normally aligned to Unit 1 CW Return.
Unit 2 Sump can be aligned to Unit 1 CW Return.

Note:*
ECW Sump located on MAB 10’ in Essential Chiller Train C Room.*

Answer 69

A

Control Banks:

*T_error 1.5 ˚F - 3 ˚F:**
*6 ^steps/_min**
*T_error 3 ˚F - 5 ˚F:**
*Linear slope (6 - 72 ^steps/_min)**
*T_error ≥ 5 ˚F:**
*72 ^steps/_min**
*Manual:**
*68.5 ^steps/_min**

S/D Banks:*
*68.5 ^steps/_min**

- T_error results in outward rod movement
- T_errror results in inward rod movement

Note:*
Once ± 1.5 T_error reached rods with continue to shim until ± 1 T_error reached.*

Answer 70

A

*60 ˚F - 105 ˚F**
MAX DBA: 122.3 ˚F*

60 ˚F Basis:

Prevents condensate in Lube Oil Coolers
Prevents thermal shock to RCP thermal barrier

Note:*
During C/D CCW Temp may reach 120 ˚F for 4 hrs (RHR cooling req.)*

Answer 71

A

Usable Volume:*
*33,500 ^gal/_tank**
2 tanks*
Boron Concentration:*
*7000 - 7700 ppm**

MODES 1 - 6:

≥ 27,000 gal (MODES 1 - 4)
≥ 3,200 gal (MODES 5 - 6)
≥ 7000 ppm
≥ 65 ˚F

CP004:

Level and temperature indication

Answer 72

A

2185 psig

PCV-655A (PT-458)
PCV-656A (PT-457)

Tailpipe temperature for PORVs and Safeties on CP004. (PORV: TI-676 / Safeties: TI-677 - 679)

Answer 73

A

PCV-655A:*
*Master Pressure Controller**
87.5% (≈ 2335 psig)*
PCV-656A:*
*Backup PZR Pressure Channel**
2335 psig*

Note:*
Only odd numbered channels can be selected as the “controlling channel” to input to the master pressure controller. (455/457)
Only even numbered channels can be selected for backup control, and they only input to PCV-656A (456/458)
Switch on CP004

Answer 74

A

Open:*
*Supply Fan Inlet Dampers (D-002/D-003/D-004)**
Shut:*
*Exhaust Filter Outlet Dampers (D-146/D-147)**
Trip:*
*Supply Fans**
*Exhaust Booster Fans**
Starts:*
*All (3) Exhaust Fans**
Locks in start signal to re-start fans when power returns*

Supply fans will not start on exhaust fan start b/c power will strip and not return.

Operator must open a relief damper (D-001/D-037)

Answer 75

A

Control Banks*
*A: 8 (4/4)**
*B: 8 (4/4)**
*C: 8 (4/4)**
*D: 5 (2/3)**
S/D Banks:*
*A: 7 (4/3)**
Unit 2: 8 (4/4)*
*B: 8 (4/4)**
*C: 4**
*D: 4**
*E: 4**

Rod D-6 in SD Bank A Group 2 was removed for Unit 1

Answer 76

A

Mode 5:*
*ALL HHSI pumps inoperable**
*SI not blocked**
Before Entering MODE 4:*
*Open ALL HHSI CL injection valves**
*2 trains of LHSI OPERABLE**
Within 4 hrs of going > 200 ˚F and before exceeding 225 ˚F:*
*1 HHSI OPERABLE and 1 HHSI in Standby**
Before Entering MODE 3 (350 ˚F):*
*ALL LHSI OPERABLE**
Within 4 hrs of going > 350 ˚F and before exceeding 375 ˚F:*
*ALL HHSI OPERABLE**
900 psig - 1000 psig:*
*ALL Acummulators OPERABLE**

Answer 77

A

HHSI Mini-Flow Valves (MOV-011/MOV-012)

LHSI Mini-Flow Valves (MOV-013/MOV-014)

RWST Outlet Valves (MOV-001)

To manually open Emergency Sump Outlet Valve:

RWST Outlet Valve closed (Manual Only)
HHSI Mini-Flow Valve closed [1/2]
LHSI Mini-Flow Valve closed [1/2]

Answer 78

A

FK-0110 Setpoint

^{20 x Boron Concentration of RCS}/_{Boric Concentration of BAT}

Controller set up for 0-10 setting. Correlates to 0-100 gpm. (5 setting is 50 gpm)

Answer 79

A

*Pulser Failure**
*Slave Cycle Input Failure**
Slave receive “Go” signal before last step done*
*Loose circuit card**

Stops Auto/Manual rod motion
Individual Bank rod motion will still work
Sends reduced current signal to affected group movable/stationary grippers

Note:*
Non-Urgent is a loss of 1 of the 6 power supplies and will not affect system operation.*

Answer 80

A

Loss of SDM

Reactivity excursion that normal means cannot handle

CRDM below insertion limits

> 1 Control Rod not inserting on Rx Trip

Loss of DRPI after Rx Trip

ATWAS

QDPS S/D Monitor Alarm

Answer 81

A

*Makeup Supply Damper Opens**
*Supply Fan Starts**
*Return Fan Starts**
*Cleanup Fan Starts**
*Return Damper Opens**
FV-9677*

Kitchen/Toilet Exhaust fan stays running because dampers powered by A/B.

Note:*
LOOP on A/B looks the same except Kitchen/Toilet fan secures b/c fan inlet dampers shut.*

Answer 82

A

Auto Start:*
*SI**
*Traveling Screens Start**

Must be manually secured.

MCC switch in LOCAL eliminates ALL Auto Functions.

Note:*
Starting screen wash booster pump will auto open screen wash valve unless MCR switch in close.*

Answer 83

A

Supply:*
*Downstream of Regen HX (IRC)**
RHR Train “A” AND Train “B”*
Return:*
*Upstream of VCT**
RHR Train “A” ONLY*

Low Pressure Letdown:

All letdown orifices open
RHR pump not required to be running
PCV-135 able to maintain ≈ 380 psig

Answer 84

A

BAT Tank Level - Low (29,584 gal) [1/1 on 1/2]

Level Recorder located on CP018.

Control switches for FV-8400A/B located on CP004.

Note:*
This is the only BAT tank level actuation. The BAT pumps will NOT trip on a low level actuation.*

Answer 85

A

PT-458

P-11: PZR Pressure ≥ 1985 psig [2/3]

Answer 86

A

DBW = ^{10 pcm}/_ppm

^{10 gals of boron}/_ppm

Answer 87

A

70 - 200 ˚F:*
*475 psig**
220 - 380 ˚F:*
*660 psig**

Uses Auct Low WR T_C / PT-404

Note:*
Normal PORV setpoint is 2335 psig. (B/U pressure channel)*

Answer 88

A

700 psig

Relieves to Containment Atmosphere

HHSI Discharge Relief (1750 psig) → PRT
LHSI Discharge Relief (600 psig) → PRT

Brainscape's Knowledge GenomeTM

Systems Test 3 Flashcards

Brainscape's Knowledge Genome^TM