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Systems Test 6 Flashcards

1
Q
  • LOT 202.23 OL-ACW*
    • *

Which loads have auto TCV’s?

A

Gen H2 cooler (1)

Turbine Lube Oil Coolers (2)

SGFPT Lube Oil Coolers (6)

Gen H2 Cooler TCVs controlled on CP007.

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2
Q
  • LOT 202.15 SGWLC*
    • *

How does the LPRVs control SGWL?

A
  • SG Water Level Mismatch:*
  • *Actual Level - Program Level**
  • PR NI Compensation:*
  • *Auctioneered High NI**

Low Power Feed Reg Valves are level dominant.

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3
Q
  • LOT 202.22 Circulating Water*
    • *

What will auto start the CW Screen Wash Pumps?

A

Lead Pump:
Screen D/P > 6”
One Screen Running

First Lag Pump:
10 Sec after lead pump start, Pressure < 102 psig
4 Screens Running

Second Lag Pump:
10 Sec after 1st lag pump start, Pressure < 102 psig
7 Screens Running

If pump started on low pressure will not stop. (Must reset)

Note:
Spray valves will open when pressure > 90 psig

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4
Q
  • LOT 202.22 Circulating Water*
    • *

What will energize the blue start permissive light on CP009?

A

Discharge Column filled*

  • *Seal Pressure > 30 psig**
  • < 50 psig starts standby pump*

Discharge Valve Closed

> 5 mins since last CW pump start

Can use Jet pump to draw air and moisture out of CW discharge column.

  • Uses screen wash header as prime water
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5
Q
  • LOT 202.15 SGWLC*
    • *

How does the SGFPTs control SGWL?

A
  • Pressure Mismatch:*
  • *Actual D/P - Reference D/P**
  • Actual D/P:*
  • *Feed Pressure (PT-558) - Steam Pressure (PT-557)**
  • Reference D/P:*
  • *0% - 20% Steam Flow: 65 psid**
  • *100% Steam Flow: 169 psid**
  • Goes up linearly from 20% - 100%*
  • PT-558 (Common Header Feed Pump Discharge Pressure)
  • PT-557 (MS Equalizing Header)
    • Same as steam dumps

Note:
Steam flow is the selected steam flow channel on CP006.

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6
Q
  • LOT 202.28 AFW*
    • *

What level in the AFWST requires the operators to enter FLEX?

A
  • Loss of All AC Power:*
  • *< 164,000 gals**
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7
Q
  • LOT 201.29 Fire Protection*
    • *

If the fire protection pump auto starts, what is the only thing that will trip the pump?

A

Mechanical Overspeed

Applies if pumps start on Low Header Pressure, Loss of power, or remote start from either control room. (CP018)

Note:
Cannot be stopped from control room.

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8
Q
  • LOT 202.24 CL-ACW*
    • *

What will auto start/trip the CL-ACW pumps?

A

Auto Starts:
Discharge Header Pressure - Low (60 psig)
Trip of running pump

  • Trips:*
  • *Ground Fault**

Overcurrent

Undervoltage

Controlled from CP009/Local

Note:
SW/FW HX Common discharge pressure on CP009 NOT pump discharge pressure.

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9
Q
  • LOT 201.40 AMSAC*
    • *

When will AMSAC actuate?

A

SGNR Level ≤ 15% [1/1 on 3/4] [25 sec TD]

Initiates:

  • Turbine Trip
  • Aux Feed Actuation
  • Blowdown Isolation
  • SG Sampling Isolation

Note:
Armed if ≥ C-20 (≥ 30% Impulse Pressure) [2/2] ≈ 40% RTP

  • Peak pressure not a concern if < 70% RTP
  • Stays armed for 360 sec after falling below 30% impulse pressure
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10
Q
  • LOT 202.24 CL-ACW*
    • *

What does CL-ACW cool?

A

Turbine:
EHC (120 ˚F)*
Air Side Seal Oil (105 ˚F)*
H2 Side Seal Oil (105 ˚F)*
Exciter Coolers (113 ˚F)*
Isophase
Stator Cooling Water (105 ˚F)*

Feed / Condensate:
Condensate Pump Bearings
Feed Booster Pump Bearings / Lube Oil
SUFW Seals / Lube Oil*
TCV closes at low temps

Misc:
IA Compressors (11/12/13)
After Cooler / Lube Oil
Secondary Sampling
MSDT pumps Seal Water
CARS

Note:
Coolers have automatic TCVs

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11
Q
  • LOT 202.20 Stator Cooling Water*
    • *

What D/P across the stator will trip the turbine?

A

Stator Cooling Water D/P - Low (19 psid) [2/3] [40 sec TC]

Will get alarm in ZLP-150 (Basement Shelter) after 10 sec [1/3]

Note:
This is D/P across the stator. Do not confuse with D/P across the running pump. (Auto Start of standby SCW pump)

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12
Q
  • LOT 202.22 Circulating Water*
    • *

What is the CW pump start sequence?

A
  • First Pump:*
  • *10 sec after start, Discharge MOV opens to 40%**
  • Second Pump:*
  • *10 sec after start, 2nd Pump’s Discharge MOV fully opens**

Once 2nd Pump’s Discharge MOV is 35% open, 1st Pump’s Discharge MOV fully opens

  • Third / Fourth Pump:*
  • *10 sec after start, Discharge MOVs fully open**

Pump trips:

  • Discharge MOV NOT moving after 24 sec
  • Discharge MOV NOT 35% open in 32 sec
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13
Q
  • LOT 202.20 Stator Cooling Water*
    • *

What stator cooling water parameters would cause the operators to manually trip the reactor and turbine if > P-9?

A
  • *SCW D/T - High (≥ 21.5 ˚F)**
  • U5524 / U5525*
  • *SCW Temperature - High (194 ˚F)**
  • U5520 / U5521*
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14
Q
  • LOT 202.12 FW Heaters / Drips/ Vents*
    • *

What are the influents/effluents of HP Htr 11A/B?

A

Influents:
RHDT’s
HP Turb 4th Stage
MSR Vent Chamber

  • Effluents:*
  • *Deaerator**
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15
Q
  • LOT 202.23 OL-ACW*
    • *

What does OL-ACW cool?

A

Main Turbine Lube Oil (2)

SGFPT Lube Oil (6)

Generator H2 (1)

CL-ACW (2)

RCB Chillers (3)

MAB Chillers (4)

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16
Q
  • LOT 202.28 AFW*
    • *

What will auto start the AFW pumps?

A
  • Motor Driven:*
  • *SG Level - Low 2 (20%) [2/4 on 1/4]**

AMSAC (15%) [1/1 on 3/4] [25 sec TC]

  • *Sequencers (MODE I,II,III)**
  • MODE II starts pump but valves do NOT open*
  • Turbine Driven:*
  • *SG Level - Low 2 (20%) [2/4 on 1/4]**

AMSAC (15%) [1/1 on 3/4] [25 sec TC]

SI

Regulating Valves throttle and OCIVs open for:

  • SG Level - Low 2 (20%) [2/4 on 1/4]
  • AMSAC (15%) [1/1 on 3/4] [25 sec TC]
  • SI
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17
Q
  • LOT 202.28 AFW*
    • *

What are the design bases for the AFW system?

A
  • Automatic Operation:*
  • *Starts within 1 min and can run unattended for 10 mins**
  • Flowrate:*
  • *Supplies 500 gpm to 1 S/G for FW Rupture / SLB**

Supplies 500 gpm to 2 S/Gs for loss of FW / LOOP

  • Cooldown:***
  • *50 ˚F/hr with 1 RCP**

25 ˚F/hr on natural circ

  • AFWST:***
  • *Maintain plant in hot standby for 4 hrs and then go to RHR conditions**
  • Containment Integrity:*
  • *Prevents reaching containment design pressure (56.5 psig)**
  • Note:*
  • Showed up on instructor’s NRC exam*
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18
Q
  • LOT 201.40 AMSAC*
    • *

What is the design basis casualty for AMSAC?

A

Loss of Feedwater with no RPS Actuation

  • PZR PORVs, Rx Trip, Turbine Trip, SG Safeties, and AFW still function.
  • Peak pressure: 2833 psig
    • Emergency Pressure limit is 3200 psig

Note:
Protected as long as turbine trips in 30 secs and AFW starts in 60 secs

19
Q
  • LOT 202.15 SGWLC*
    • *

How does the MFRVs control SGWL?

A
  • SG Water Level Mismatch:*
  • *2.5 (Actual Level - Program Level)**
  • Flow Mismatch:*
  • *0.6 (Steam Flow - Feed Flow)**

MFRVs are level dominant.

20
Q
  • LOT 202.22 Circulating Water*
    • *

What will trip a CW pump?

A
  • Starting Pump:*
  • *Discharge MOV NOT moving after 24 sec**

Discharge MOV NOT ≥ 35% open in 32 sec

  • Stopping Last 2 CW Pumps:*
  • *Stopping 1 pump trips both**
  • Discharge valves remain open*
21
Q
  • LOT 201.29 Fire Protection*
    • *

What is required to be FUNCTIONAL in the Fire Protection System?

A

2 Tanks (300,000 gal each)

2 Pumps (2500 gpm each)

  • 1 Pump FUNCTIONAL (Restore in 7 days)
  • Total Volume ≥ 300,000 gal but < 600,000 gals (Restore in 7 days)
  • Pumps AND Volume NOT FUNCTIONAL (Restore in 24 hours)
  • Underground Piping NOT FUNCTIONAL (Restore in 24 hours)

Note:
Only Safety Related portion of the system is the CIVs

22
Q
  • LOT 202.12 FW Heaters / Drips/ Vents*
    • *

What are the influents of the deaerator?

A
  • Influents:*
  • *HP Turb 8th Stage**

MSDT

FWH 11

Main Steam

Aux Steam

23
Q
  • LOT 201.40 AMSAC*
    • *

What powers AMSAC?

A
  • AMSAC:*
  • *DP006**
  • SGNR Level Instruments:*
  • *LT-0518/0528: DP1203**

LT-0537/0547: DP1204

Physically located in QDPS RPU-N (35’ EAB Relay Room)

Note:
Instruments fail low on loss of power

24
Q
  • LOT 201.29 Fire Protection*
    • *

Which fire hydrants are required for tech specs?

A
  • ECW Intake Structure:*
  • *Fire Hydrant #13**
  • Restore OR Route hose within 1 hr*
  • AFWST:*
  • *Fire Hydrant #7 (Unit 1)**
  • Restore OR Route hose within 1 hr*
  • *Fire Hydrant #20 (Unit 2)**
  • Restore OR Route hose within 1 hr*
  • Fire Pump Hose House:***
  • *Fire Hydrant #10**
  • Restore OR Route hose within 1 hr*

Note:
Only required by 0PGP03-ZR-0018.

25
Q
  • LOT 202.23 OL-ACW*
    • *

What TCVs can be controlled from the control room?

A
  • CP007:*
  • *Gen H2 cooler**
  • Both TCVs*

Raising demand causes bypass to open and suction to close.

Note:
All other TCVs are local control only

26
Q
  • LOT 202.22 Circulating Water*
    • *

What reservoir temperature will require running all four CW pumps?

A

69 ˚F

Running all four CW Pumps < 69 ˚F will raise the plant’s condensate depression and lower overall efficiency.

27
Q
  • LOT 202.28 AFW*
    • *

What is the minimum speed of the terry turbine?

A
  • *1900 RPM**
  • 45 sec after start*

Must trip terry turbine if < 1900 RPM to prevent damage

28
Q
  • LOT 202.28 AFW*
    • *

Where are MOV-0514 and MOV-0143 physically located?

  • MOV-0514: Trip / Throttle Valve
  • MOV-0143: MS Supply
A
  • MOV-0514:*
  • *Terry Turbine Cubicle (IVC 10’)**
  • MOV-0143:*
  • *By SG PORVs (IVC 58’)**

Must leave MOV-0143 open (≥ 2 hrs) or water collects in pipe and will result in overspeed of terry turbine.

29
Q
  • LOT 202.12 FW Heaters / Drips/ Vents*
    • *

What will trip the LP HTR Drip Tank Pump?

A

LP HTR Drip Tank Level - Low (7.5”)

Seal Water Pressure - Low (30 psig)

  • *FW HTR 15/16 Level - High [1/2]**
  • Respective train’s FW Heater*

Powered from 1D Switchgear.

Note:
Pump Discharge MOV must be closed to start pump.

30
Q
  • LOT 202.23 OL-ACW*
    • *

What are the starting permissives and auto starts for the OL-ACW pumps?

A
  • Auto Start:*
  • *System Pressure - Low (68 psig)**
  • Downstream of the strainer*
  • *Trip of Running Pump**
  • Starting Permissives:*
  • *Seal Water Pressure ≥ 18 psig [Unit 1 ONLY]**
  • Will not trip pump*

Note:
Pressure indicator on CP009 is pressure downstream of strainer NOT pump discharge pressure.

31
Q
  • LOT 202.18 Generator Seal Oil*
    • *

What pressure does the Air Side Seal Oil Pump (ASSO) maintain the generator seal oil system normally operate at?

A
  • *87 psig**
  • 12 psig > than H2 pressure (75 psig)*

Pressure equalizing valves maintain Air side and Oil side at the same pressure.

32
Q
  • LOT 202.12 FW Heaters / Drips/ Vents*
    • *

Where does the FW heater drains empty into the condensate system?

A
  • LP Heater Drip Pumps:*
  • *Between FW Heater 15 and 16**
  • MSDT Pump Discharge:*
  • *Upstream of DA inlet valves**
  • FW Heater 11:*
  • *DA**

Note:
LP Heater Drip Pump seals also come from condensate.

33
Q
  • LOT 202.23 OL-ACW*
    • *

What powers the OL-ACW pumps?

A
  • Pump 11:*
  • *LC 1D2**
  • Pumps 12/13:*
  • *LC 1D1**

Controlled on CP009/Locally

34
Q
  • LOT 202.28 AFW*
    • *

What is the minimum volume in the AFWST as required by LCO 3.7.1.3 AFWST?

A

485,000 gals

LCO 3.7.1.3 AFWST

Applicability: MODES 1 - 3

35
Q
  • LOT 202.15 SGWLC*
    • *

What is program SGWL?

A
  • *70.7%**
  • SGNR Level*

7300 cabinets maintain program level

36
Q
  • LOT 202.20 Stator Cooling Water*
    • *

What will auto start the standby SCW pump?

A

Running Pump D/P - Low (≤ 20 psid)

37
Q
  • LOT 202.22 Circulating Water*
    • *

What systems utilize the CW discharge piping?

A

OL-ACW

ECW Blowdown

  • *LWPS**
  • Connects to OL-ACW (MAB Chiller 11 in overhead)*
38
Q
  • LOT 202.28 AFW*
    • *

What is the major concern when cross-connecting AFW trains?

A

Runout of Pump (675 gpm)

Will not see on flow meters

39
Q
  • LOT 202.18 Generator Seal Oil*
    • *

What pressure does the HSSO D/P Regulator, ASSO D/P regulator, and the Turbine Backup Pressure Regulator maintain?

A
  • ASSO D/P Regulator:*
  • *12 psid**
  • 5 psid starts DC Pump*
  • Turbine (ASSO) Backup Pressure Regulator:***
  • *8 psid**
  • Supplied from Turbine LO*

Note:
If supplying air side seals from the BOP in the TGLO System, must reduce H2 pressure to < 2 psig.

40
Q
  • LOT 201.29 Fire Protection*
    • *

What auto starts the fire protection pumps?

A

Pump 1:
Header Pressure 130 psig [5 sec TD]
Loss of Power to Panel

Pump 2:
Header Pressure 120 psig [10 sec TD]
Loss of Power to Panel

Pump 3:
Header Pressure 110 psig [15 sec TD]
Loss of Power to Panel

Jockey pump maintains system pressure > 130 psig (35 gpm)

Note:
Jockey pump operated locally in “Hand” position. Auto position non-functional.

41
Q
  • LOT 202.28 AFW*
    • *

When will the terry turbine (MOV-0514) trip on overspeed?

A
  • *114%**
  • 100% speed is 3600 RPM*

Manual linkage reset after mechanical overspeed (4100 RPM)

Note:
Trip pushbutton on CP006/ASP is an electrical overspeed.

42
Q
  • LOT 202.15 SGWLC*
    • *

If a SG Pressure channel fails, how does steam flow fail?

A
  • SG Pressure Fails High:*
  • *Steam Flow Fails High**
  • SG Pressure Fails Low:*
  • *Steam Flow Fails Low**
43
Q
  • LOT 202.22 Circulating Water*
    • *

What is the CW pump securing sequence?

A
  • Third and Fourth Pumps:*
  • *Once Discharge MOV 80% Open, Pump Stops**

Discharge MOV fully Closes

  • First and Second Pumps:*
  • *Once 2nd pump’s Discharge MOV 95% Open, BOTH PUMPS TRIP**

Valves Remain As-Is (95% Open / Fully Open)

Must wait 5 mins between securing pumps

Note:
PTL:**Bypasses 5 min TD but Discharge MOVs will still fully close

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