Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Pirtle NRC PREP Group Study > Important Systems > Flashcards

Important Systems Flashcards

1
Q

How long are the 250 VDC Plant Batteries expected to last during a Loss of Off-site Power?

A

3 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How long are the 250 VDC Plant Batteries expected to last during a Station Blackout?

A

4 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

If the CRID is being powered from CRP-3, what’s the status of the CRID Bus?

A

Inoperable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the bus and Trains for the CRIDs?

A

CRID 1 - C
CRID 2 - D
CRID 3 - A
CRID 4 - B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does it mean when the NSYNC Light goes out?

A

The alt source of power is gone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the normal power supply to the CRIDs?

A

250 V DC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the autostarts for the MDAFPs?

A

Both MFPs Trip (w control switch in auto)

AMSAC

Loadshed

Lo-Lo SG Level (1 SG)

SI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the TDAFP Auto Stared?

A

Undervoltage on RCP Bus

SG Lo-Lo (2 SGs)

AMSAC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does the AMSAC Signal do?

A

Trips the Turbine and Starts all AFW pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the TS Minimum and Basis of the CST?

A

182,000 gals (44%)

Maintains plant in hot standby for 9 hours onPORVs w LOOP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the 3 autostarts of the CCW Pumps?

A

SI

Loadshed

Low discharge pressure (80#)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does a high rad signal do for CCW?

A

Auto closes surge tank vent valve CRV-412

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

On an SI, what flow do the RHR Hx CCW Outlet valves throttle to?

A

3000-3500 gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What CCW Systems isolate on a Phase A?

A

SFP Hx

Excess LD

Rx Support Cooler

NBAE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the ESF Loads for CCS?

A 
RHR Hx
RHR pp Seal Hx
CTS pp Seal Hx
SI pp LO 
SI pp Seal Hx
CCP LO Cooler
CCP Speed Increaser
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Does the control air compressor have a loadshed trip?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the key pressures of the plant and control air systems?

A

100 # - Normal

95# - Standy PAC Stars

90# - CAC Starts (sensed in wet air receiver)

85# - PA Hdr Isolation Valves Close

80# - Manual Trip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Which Rad monitors will close the 100 series valves (inside containment) and trip the IR Purge supply fan?

A

Train A 00 Odd Rad Monitors (ex: 1300)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which Rad Monitors will close the 200 series valves (outside containment) and trip the majority of the ventilation supply fans?

A

Train B- Even Rad Monitors (Ex: 1400)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What are the Tech Spec Limits for upper and Lower Containment?

A

Upper: 60-100*F

Lower: 60-120*F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are the Tech Spec Pressure limits for containment? And what must be done if outside limits?

A
  • 1.5 to +0.3 psig

* Restore within limits within 1 hour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What signal stats the CTS Pumps?

A

Phase B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What signal opens the CTS Pump Discharge valves and the SAT Outlet Valves?

A

CTS Signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are the key levels and associated actions of QLC-451 for the VCT?

A

2.5% - Low-Low Alarm and half RWS signal

14% - Auto Makeup Starts + Low Alarm + MU Not in Auto Alarm

24% - Auto Makeup Stops

87% - Divert Trips Open + High Alarm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What are the key levels and associated actions of QLC-452 for the VCT?

A

2.5% - VCT LO-LO Alarm + 1/2 of RWS signal

7% - Low Alarm

78% Divert Starts

87% Divert Stops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What happens in the CVCS on a phase A Signal?

A

LD Orifice Valves CLose

LD CIVs Close

Seal Return Valves CLose

CCW to XS LD Hx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

WHat happens in the SVCS on a SI Signal?

A

Charging Hdr Iso Valves Close
CCW to LD Hx Closes
CCP Recircs Close and throttle based on pressure

CCP Suction realigns to RWST

BIT Valves Open

CCP Starts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

During an Emergency Boration, what must be done with the BAT Pumps?

A

Manually shifted to FAST Speed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is the pressure input for QMO-225, East CCP ELO?

A

NPP-155

1812-1825#

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is the pressure input for the West CCP ELO?

A

NPP-153

1812-1825#

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What must be done if your SDM is outside the COLR limits?

A

M2 w Keff <1
M2-5

Borate to restore in 15 mins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What are the Tech Spec Limits for the RWST?

A

375,500 gals

2400-2600 ppm boron

70-100*F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the ECCS Acceptance Criteria?

A

Peak Clad Temp - < 2200*F

Max Cladding Oxidation - < 17%

H2 Generation - < 1%

Core maintains a coolable geometry

Long term abundant cooling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What are the EDG Trips when needed for a SI or a LOOP with 250 VDC available?

A

Generator Phase Differential

Electronic Overspeed

Manual Push Button

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What are the EDG Trips without 250 VDC available?

A

Manual Fuel Valve on the Worthington module

Mechanical Overspeed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

If the EDG Electronic governor fails high, what happens?

A

EDG Speed will rise and machine will be controlled by the mechanical governor eventually

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What is the status of the EDG during surveillance testing and why?

A

Inoperable bc it will not generate a loadshed signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What happens if control air is lost to the EDG?

A

Throttle control cycle deer extends, forcing the fuel racks closed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

What is the normal status of breaker BD?

A

OPEN

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

What does TR-5 supply?

A

Train B reserve feed for both units

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

What does TR-9 supply?

A

Train A Reserve Feed for both units

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

125 VDC supplies what?

A

Breaker / control power for the switchyard. EACH YARD HAS ITS OWN 125 VDC SUPPLY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

What is TR-12-EP-1 designed to handle?

A

CTS in 1 unit and SBO in both units

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

What is the SDG sized for?

A

1 train of RCS Inventory Control in 1 unit

ESW, CCW, CCP, AFW, NESW, CAC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

What does the anti-pumping circuit do?

A

Prevents breaker from attempting a second closure w a standing close signal when the first attempt was followed by a trip open signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Explain degraded bus voltage.

A

2/3 T busses sensed 113 V (ONLY sensed on A + D busses)

9 sec delay w SI / SG LO-LO opens T buse feeders

+ 90 sec auto transfer to RATS

+21 secs open T bus Feeders

Train Specific

Opens BOTH RCP Bus Ties for associated train

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Explain Load Shed (UV)

A

2/3 sensed on EACH T-bus @ 94 (93) volts

2 second delay and bus specific

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

What are the ESW pump auto starts

A

SI (either unit, train specific

Load shed

Low hdr pressure - 40# (auto only)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

What do the ESW from CCW Hx valves throttle to on a SI

A

~5500 gpm

Adjustments can be made after the valves throttle if necessary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

What are the MFP Trips

A

Manual

Rx Trip

SI

Hi Hi SG Level

IPS

Thrust Bearing Wear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

What do the instrument power fuses power? When do they trip?

A

Instrument Power Supplies

Always trip unless bypassed or blocked

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

What do Control Power fuses power? And when do they cause a trip?

A

Bistables

Always unless blocked

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

What kind of detectors are the SR Detectors?

A

BF3 Proportional Counters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

What kinda of detectors are the IR Detectors?

A

Compensated Ion Chamber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

What kind of detectors are the PR detectors?

A

Uncompensated Ion Chamber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

What kind of detectors are the gammametrics?

A

Fission Chamber (U235)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Where can N-23, SR Gammametrics be read? What powers it?

A

Control Room or LSI-4

Opposite Units CRID 3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

What happens if your IR Detector is undercompensated?

A

Gives a false High Indication. Can cause IR current to stay above the P6 setpoint when coming down in power, which will prevent the SR Detectors from Auto energizing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

What must be done if your AFD is not within Target band?

A

Restore within 15 mins

If not met, restore to within upper limit (90%) within 15 mins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

What must be done if you’re outside the acceptable band at 80% power?

A

Reduce to 50% power in 30 mins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

What are the normal parameters of the PRT?

A

100*F

83% Level

3 #

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

PORV Cold Overpressure: NRV-152 is controlled by?

A

NPS-122 (Loop 1 WR)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

PORV Cold Overpressure: NRV-153 is controlled by?

A

NPS-121, Loop 2 WR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

When do the PRZ Backup Heaters trip?

A

Loadshed

PRZ Low Level at 17% (hot cal)

Over current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

What is the PRZ Pressure Safety Limit?

A

2735 psig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

What happens if a PRZ Level Control Channel Fails Low?

A

QRV-251 throttles open to increase level

LD Isolates (QRV-112 + all orifices)

PRZ Htrs Off

Rx Trips at 92%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

What happens if PRZ Level Bistable channel fails Low?

A

LD Isolates (QRV-111)

PRZ Htrs Off

PR Pressure Decreases due to heaters being off

Actual level increases, charging to min

Rx Trips at 92%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

What happens if the PRZ Level control channel fails high?

A

QRV-251 throttles closed to lower level

PRZ Htrs com on (+5% deviation)

Actual Level decreases and at 17%, Orific isolation valves close, QRV-111 closes, and heaters turn off

Actual Level increases (min charging w no let down)

Rx Trips at 92%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

What happens if PRZ Level Bistable channel fails high?

A

NOTHING!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

What happens if PRZ Pressure Controlling channel fails high?

A

All PRZ Htrs Off

Sprays full open

1/2 signal for NRV-152 present

Actual PRZ Pressure decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

WHat happens if PRZ Pressure Controlling channel fails low?

A

Backup eaters in auto will turn on

Cycling Htrs full on

Actual PRZ Pressure rises

NRV-152 is inoperable

If channel 3 was in control. ALL PORVS inoperable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

What happens if the PRZ Pressure bistable channel fails high?

A

1/2 actuation signals present for NRV-151 and 153 present

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

What happens if the PRZ Pressure bistable channel fails low?

A

NRV-151 + 153 inoperable

If channel 4 was the bistable, then ALL PORVs are inoperable

74
Q

What are the interlocks for starting a RCP?

A

Bearing Lift Pump running

Bearing Lift Oil Pressure 510#

75
Q

What are the RCP Power supplies?

A

1 - B

2 - C

3- D

4 - A

76
Q

Assuming 8 gpm Seal Injection, what is the seal injection flowpath?

A

5 gpm flows down RCP Shaft into the RCS

3 gpm flows up thru #1 seal

3 gpm flows up thru #2 seal

100 cc/hr flows up thru #3 seal

77
Q

What is the RCP Seal Return Flowpath?

A

1 Seal - Seal Water Hx to CCP Suction

78
Q

Which RVLIS is used when filling and venting the RCS with the RCP Bump Method?

A

Upper Plenum, with RCPs off

79
Q

What is used for the Subcooling Meter Calc?

A

Auctioneered HI CETCs or WR RTD Temps

Auctioneered LO RVLIS Pressure (used bc outside containment)

80
Q

What is the heat up limit?

A

60*F per hour

81
Q

What is the Cooldown limit?

A

100*F / hr

82
Q

What are the interlocks to open ICM-305/306, RHR Suction from the Recirc Sump?

A

IMO-310, RHR Suction Valves - Closed

IMO-215, RWST to CTS Pump - Closed

83
Q

What are the interlocks to open IMO-340, RHR to CCP / SI Suction?

A

ICM-305, RHR Suction from Recirc Sump - Open

IMO-252 or IMO-263, SI Recirc to RWST - Closed

84
Q

What are the interlocks to Open IMO-330, RHR to Upper Spray?

A

ICM-305, RHR Suction from Recirc - OPEN

85
Q

What are the interlocks to open IMO-310, RHR Suction Valves?

A

ICM-305, RHR Suction from Recirc Sump - Closed

IMO-340, RHR to CCP / SI Suction - Closed

IMO-330, RHR to upper Spray - Closed

86
Q

What happens on a high rad on R-5 or VRS-5005/5006, SFP Area Rad Monitors?

A

Trips AFS Fans

Puts AFX Fan in charcoal mode

87
Q

What happens on a high rad on R-19 + R-24, Blowdown Rad monitor?

A

Closes Blowdown DCRs

Closes BD Sample DCRs

Closes DRV-350

Trips BD Treatment pump (R-24 ONLY)

88
Q

What happens on a high rad on the liquid effluent Rad Monitor RRS-1001?

A

Closes RRV-285

Monitor Tank Pumps Trip

WECT Pumps Trip

89
Q

What does a high alarm on the SJAE and GSLO rad monitors mean?

A

Possible SGTR on EITHER unit (based on which unit is supplying aux steam)

90
Q

What happens on a high rad signal on the vent effluent Rad Monitor VRS-1500/2500?

A

RRV-306 closes (low range 1505)

91
Q

What happens on a High Rad on the CR Area rad monitors ERS-7401 / 8401?

A

Starts THAT UNIT Control Room Pressurization Fan

Dampers realign

92
Q

How many SG PORV Rad Monitors and Detectors are there?

A

2 Monitors, 4 detectors

93
Q

A logic cabinet urgent failure effects which rods?

A

ALL Rods

94
Q

A Power cabinet Urgent Failure affects which Rods?

A

Groups for that specific cabinet

95
Q

While restoring a mis-aligned Rod, while will a urgent failure be generated?

A

In other bank of rods in that power cabinet due to all lifetime coil disconnect switches being open for that entire group

96
Q

Loss of redundant power to power or logic cabinets for control rods is what kind of failure?

A

Non Urgent

97
Q

What powers Rod Bottom Lights?

A

CRP-3

98
Q

How fast do rods move in manual?

A

48 spam

99
Q

How fast do rods move in auto?

A

8-72 spm

Error 1/5-3F, 8 spm

Error 3-5*F, 32 steps per degree +8

100
Q

How fast do rods move for shutdown banks in manual?

A

62 spm

101
Q

If a PR NI fails high, what is the effect on rods?

A

Power Rate of change causes rods to step in, but rod stop C2 will prevent rods from stepping back out on the temperature error in both auto and manual

102
Q

How will a PR NI low failure affect rods?

A

No effect unless affected instrument was previously the auctioneered high

103
Q

How will MPC-253 failing high affect Rods?

A

Power Rate of change and Tavg < Tref causes rods to step out

104
Q

How will MPC-253 failing low affect Rod?

A

Power Rate of change and Tavg > T ref causes rods to step in

105
Q

How will Tavg failing high affect Rods?

A

Tavg > Tref causes rods to step in

106
Q

Will cross-tying SFP Cooling thru the purification piping prevent boiling?

A

No, it will delay it

107
Q

For SSPS, loss of both 15 VDC OR both 48 VDC power supplies does what?

A

Generated Rx Trip

108
Q

CRID 1 supplies which train of slave relays?

A

A

109
Q

CRID 4 supplies which train of slave relays?

A

B

110
Q

A loss of CRIDs 1 or 4 prevents what?

A

Actuation of ESF equipment on that associated train

111
Q

For SSPS Bistable Test Switches, what does it do for the logic?

A

Gives SSPS the trip signal

112
Q

What is unique with CTS Bistables?

A

Bypassed instead of placed in test, to ensure we don’t have an inadvertent CTS

113
Q

When the RPS Bypass switches are in bypass, what happens?

A

Never get a trip signal

114
Q

Do RX Trip Bypass breakers have Shunt coils?

A

NO

115
Q

How do the Rx Trip Breakers Trip Coils work?

A

Energized to trip

116
Q

How do the Rx Trip Breakers UV Coils work?

A

De-Energized to Trip (48 VDC from SSPS)

Do NOT Need control power

117
Q

How do the Rx Trip Breakers Shunt Coils work?

A

Energize to Trip

118
Q

What are the inputs for OT delta T?

A

Delta T

Tave

AFD

PRZ Press

119
Q

What does OT Delta T Protect from?

A

DNB

120
Q

What are the inputs for OP delta T?

A

Delta T

Tave

121
Q

What does OP delta T protect from?

A

KW/ft

122
Q

What is the turbine trip / load rejection steam dump controlled based on?

A

Auctioneered high Tavg

123
Q

What is C-7A?

A

10% load rejection on MPC-254

124
Q

What is C-7B?

A

30% Load rejection on MPC-254

125
Q

What is C-8?

A

TT Arming Signal

4/4 MT SV Closed

OR

2/3 Oil Pressure switches below 800 psig

126
Q

What is C-9?

A

Blocking Signal:

1 CW Pump

CRID 2

3/3 Condensers >20.6” hg

127
Q

What is P-12?

A

Blocking Signal

2/4 Tavg < 541*F

Blocks steam dump until placed in Bypass Interlock

128
Q

What does Steam Dump Bypass Interlock do?

A

Allows group 1 operation below P-12

129
Q

For the TT Controller, what are the temperature differences for each group to be tripped open?

A

10*F - 1 group

20*F - 2 groups

130
Q

What is T no load?

A

547*F

131
Q

How many groups of steam dumps will you get maximum on a turbine trip?

A

2 groups

132
Q

How many groups of steam dumps will you get maximum on a Load Rejection?

A

3 groups

133
Q

What is C-20?

A

2/2 Turbine Impulse Pressures > 40%

134
Q

What is needed for an AMSAC Actuation?

A

3/4 FF < 25%

135
Q

What is SG Shrink caused by?

A

Reduction in Steam flow

136
Q

What is SG Swell Caused by?

A

Raised Steam Flow

137
Q

What are the operational Modes based on?

A

Keff

% Rated Thermal Power

RCS Tavg

138
Q

WHat are the 6 modes of operation?

A

1 - Power Operation. Keff >/= 0.99, >5% Thermal Power

2- Startup. Keff >/= 0.99, =5% Thermal Power

3- Hot Standby. Keff <0.99, Tavg >/= 350*F

4- Hot Shutdown. Keff <0.99, Tave between 200-350*F

5- Cold Shutdown. Keff <0.99, Tavg =200*F

6- Refueling.

139
Q

What are the auto-starts for an AES Fan?

A

ECCS/CTS Pump Start

SI

140
Q

What will happen on a loss of BOTH Unit 1 AX Fans?

A

12-RRV-306 closes

141
Q

What starts the CCW Pump Fans?

A

Manual

Load Cons

142
Q

What will place the AES Charcoal Filter I/S?

A

Phase B (either Train)

AES Fan C/S in Stop (that fan only)

Loss of power to EITHER AES Fan

Loss of Control Air

143
Q

What will place the AFX Charcoal Filter I/S?

A

SFP High Rad / Airborne

Loss of power to EITHER fain

Loss of Control air

144
Q

What fans trip on Phase B?

A

CLVs

CRDM Fans

PRZ Fans

Rx Cavity Fans

145
Q

What will start ALL CRP Fans?

A

SI in either unit

146
Q

What will the CRP fan damper positions be for a cable vault fire?

A

CRAC Outside Supply 1/1A- Closed

CREV Outside Supply 2/2A- Part Open for 1, other is closed

CR Recirc 3 - Closed

147
Q

What will be affected if a PR detector fails low?

A

OTDT setpoint will lower

148
Q

Will a high rad signal place an AES Fan charcoal filter in service?

A

No. This must be done manually

149
Q

If a 1 RCS Loop flow lowers in comparison to all others, what would the result be?

A

Reactor core margin to DNB will be lower

150
Q

If the EDG Emergency Trip pushbutton is inadvertently pressed in the control room while the EDG is actually needed, how must you restart it?

A

Reset the HEA Relay in the control room

151
Q

The primary function of the Ice Condenser is to ____________ to less than the design limit following a ________ or a _______

A

Limit peak pressure

following a LOCA or a Steam Line Break

152
Q

What does the TDAFP Discharge Flow High Alarm mean?

A

AFW Flow Retention has actuated

153
Q

If control power is lost to a closed in pump breaker, can you trip the breaker from the control room? Will automatic trip functions work?

A

NO! Only tripped locally

Automatic trips are NOT overable

154
Q

Where does the PRT vent to and what is the interlock?

A

Waste Gas Header

Pressure must be < 10 psig

155
Q

What modes must 4 accumulators be operable?

A

M1 and M2

M3 > 1000#

156
Q

What are the Tech Spec limits for Accumulator volume, pressure and boron?

A

Volume - 921-751 cubic feet

Pressure - 585-658 psig

Boron - 2400-2600 ppm

157
Q

Why do operators care about the SAT LO-LO Level alarm during a LOCA?

A

The spray add tank outlet valves and educator supply valves may not have closed automatically. This could cause damage to the CTS Pumps due to the resulting gas addition

158
Q

What’s the flow path that would detect a SG tube leak thru Gland Steam Condenser Vent Rad monitor?

A

A PORTION of the fission products will be monitored before being transmitted to atmosphere, as only a sample flow passes thru SRA-1800

159
Q

Can the Backup Plant Air Compressor feed both unit’s control air headers?

A

Yes, it wil discharge to both unit’s CA Systems

160
Q

With refueling in progress, SR audible count rate has became inoperable in both containment and in the control room. What is the TS action required for these conditions?

A

IMMEDIATELY initiate actions to isolate unborated water sources to the RCS

161
Q

What will cause a monitor tank pump to trip during a liquid release?

A

RRS-1001, Hi Rad

RRS-1000, Failure

RFS-1010/1011, High / Low Rad Monitor Sample Flow

Low Monitor Tank Level, if selected

162
Q

What is the power supply for H2 Recombiners?

A

Recombiner 1: 11B (21B)

Recombiner 2: 11C (21C)

163
Q

What are the Tech Spec Parameters for the RWST? Volume, Boron concentration, and Temp

A

Volume - 375,500 gals
Boron - 2400-2600 ppm
Temp - 70-100*F

164
Q

Do both reactor trip breakers and reactor trip bypass breakers have shunt coils?

A

NO- Only Rx Trip Breakers do

165
Q

What are the key numbers for Generator frequency?

A

> 59 Hz, unlimited operating time

< 59 Hz but > 58.2 Hz, reduce power to approx. 50 MWe within 30 mins and open generator output breakers

= 58.2 Hz, Immediately Trip the Rx

166
Q

What will trip closed 12-RRV-306

A
  • Loss of both U1 Aux Bldg Exhaust Fans

- High Rad on U1 or U2 Vent Stack Rad Monitors VRS-1500/2500

167
Q

What happens if during power escalation, you exceed 60% power (and 626 MW) with only 1 FP I/S?

A

When you exceed 626 MW, a runback will initiate

168
Q

Is the CCW thermal barrier isolation valve common to all RCPs? Or does each have its own?

A

Common to ALL

169
Q

If CCW to the RCP thermal barrier is lost, must you trip the affected RCPs?

A

NO, as long as it has seal injection maintained

170
Q

To calculate MFP DP, what are the inputs used?

A

Highest of the low pressure (steam) and Lowest of the high pressure (FW)

171
Q

What can force a MFP to speed control?

A

Both MS Press Xmitters Fail

Both MFP Hdr Press Xmitters Fail

MFP dP Setpoint Xmitter Fails

Other MFP Trips when > 60% Power

MFP Speed > 5220 (5300) rpm

172
Q

What is the Tech Spec limit for the EDG Day Tank Level?

A

101.4 gallons

173
Q

If you receive a high alarm on VRS-1505, AB Ventilation Noble Gas Activity Monitor while containment Purge System is in Ventilation Mode, what must be done?

A

Stop Purge and talk w RP

Auto isolation signals are blocked while in ventilation mode

174
Q

How do the RHR Hx Outlet valves (IRV-320 and IRV-310) fail on a loss of air?

A

Open!

This raises flow thru the Hx, raising the cooldown rate

175
Q

If CRID 1 is lost, what happens?

A

Train A SSPS output relays won’t work.

Manual red switches will not work to actuate SI.

176
Q

When an RCP Trips, how do Thot and Tcold respond in that loop?

A

Reverse flow causes Thot to drop to the Tcold value or slightly below

T cold remains about the same at low power

177
Q

Which CRID does NOT supply power to the Steam Dump System?

A

CRID 3

178
Q

What would cause a load cons signal to be generated for the CD EDG?

A

Train A SI with a LOOP/Loadshed

179
Q

What will cause 12-RRV-285 to trip?

A

RRS-1001 Hi Rad

RRS-1000 Failure

High & Low Radiation Monitor Sample Flow
(RFS-1010, RFS-1011)

180
Q

What will cause RRV-286/287 to trip?

A

NO Circ Water Pumps are running in associated unit

Pirtle NRC PREP Group Study (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions