ML12284A202
| ML12284A202 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 09/26/2012 |
| From: | Nelson J, Reeser D W Operations Branch III |
| To: | Exelon Generation Co |
| Shared Package | |
| ML11354A119 | List: |
| References | |
| Download: ML12284A202 (84) | |
Text
Dresden Generating Station 11-1 (2012-301) NRC - SCENARIO 01 TBCCW - PUMP, SWAP DUE TO DEGRADING PUMP RPS - MG SET, TRIPS / RE
-ENERGIZE FROM RESERVE POWER ISO COND - SYSTEM, TUBE LEAK TURBINE AUX
- LOSS OF ALL TURBINE SEAL OIL, WITH FAILURE OF ESOP TO STAR T MPT - TR 2 HIGH TEMPERATURE REQUIRING LOAD DRO P FW - FWLC CONTROLLER, FW FLOW INDICATION FAILS UPSCALE MANUAL SCRAM
- STEAM LEAK IN THE DRYWELL EMERGENCY DEPRESSURIZE - ON EXCEEDING PRIMARY CONTAINMENT PRESSURE DUE TO STEAM LEAK INSIDE THE DRYWELL AND PARTIAL LOSS OF ABILITY TO SPRAY THE DRYWELL EXAM MATERIAL
Rev. 00 04/12 Developed By:
Exam Author Date Approved By:
Facility Representative Date ILT-N-1 Page 2 of 30 Rev. 00 (04/12)
Scenario Outline Station: Dresden Station Scenario No.:
11-1 (20 12-301) NRC - Scenario 0 1 Evaluators Operators / crew position
/ ATC / BOP Initial Conditions:
/ CRS Initial Power = Full Power Turnover: Maintain load per TSO direction.
Event No. Malf. No. Event Type* Event Description 1 NONE C BOP TBCCW - Pump, Swap Due To Degrading Pump 2 B02 C / T ATC RPS - MG Set, Trips / Re
-energize From Reserve Power 3 ICTUBLK C / T BOP ISO COND - System, Tube Leak 4 K50 C BOP TURBINE AUX
- Loss Of All Turbine Seal Oil, With Failure Of ESOP To Start 5 SER1633 E230 C ATC MPT - TR 2 High Temperature Requiring Load Drop 6 RLMRFPB I ATC FW - FWLC Controller, FW Flow Indication Fails Upscale 7 I21 M TEAM Manual Scram
- Steam Leak in the Drywell.
8 I21 K23 K40 M TEAM EMERGENCY DEPRESSURIZE
- On Exceeding Primary Containment Pressure Due To Steam Leak inside the Drywell And Partial Loss of Ability to Spray the Drywell
- (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor, (T)ech S pec ILT-N-1 Page 3 of 30 Rev. 00 (04/12)
Scenario Objective Evaluate the operators in Scenario Summary Initial Conditions:
- 1. Unit is at Full Power. 2. The following equipment is OOS:
- a. None 3. LCOs: a. None
Scenario Sequence 2B TBCCW pump degrades causing pump discharge pressure to drop.
The Team swaps TBCCW pumps.
A trip of 2B RPS MG Set causes a loss of RPS Bus A. The crew will reenergize RPS Bus A from reserve power and restore affected systems to a normal condition The Isolation Condenser develops a tube leak and must be isolated. With the Isolation Condenser inoperable, a 14 day Tech. Spec. LCO will be entered.
The Main Hydrogen Seal Oil pump trips with a failure of the Emergency Hydrogen Seal Oil pump to start. The team starts the Emergency Hydrogen Seal Oil pump and verifies the generator load does not exceed the capacity limit curves for possibly reduced generator hydrogen pressure
. The main power transformer oil temperature rises causing the team to determine they must lower load on the transformer per DOA 6100
-01. Indicated Feedwater flow slowly fails upscale, causing FRVs to close. This results in lowering RPV level.
Team takes manual control of FWLC; and/or, places FWLC in 1
-Element control
. A small steam leak in the Drywell begins. The Team will scram the reactor due to the rising Drywell pressure. Shortly after the reactor scram, the leak will increase enough that Containment sprays are required. When the Team attempts to spray the Drywell, Bus 23
-1 and 28 trip resulting in a loss of one Division of Drywell Spray. The leak worsens and Primary Containment pressure will exceed the PSP limit and require the Team to Emergency Depressurize.
Event One - TBCCW Pump Degrading / Swap TBCCW pumps.
2B TBCCW pump degrades causing pump discharge pressure to drop.
Malfunctions required:
1 (2B TBCCW pump degrades)
Success Path:
Swap TBCCW pumps.
ILT-N-1 Page 4 of 30 Rev. 00 (04/12)
Event Two
- Loss of RPS A trip of 2B RPS MG Set causes a loss of RPS Bus A Malfunctions required:
1 2B RPS MG Set Trip Success Path:
Perform DOA 500
-05, Loss of Reactor Protection System Bus Event Three - Isolation condenser Tube Leak Isolation condenser develops a tube leak.
Malfunctions required: 1 (Isolation condenser tube Leak)
Success Path:
Team isolates Isolation Condenser.
Team addresses Tech Specs.
Event Four - Main Seal Oil Pump Trip
/ Failure of Emergency Seal Oil Pump to Auto Start The Main Hydrogen Seal Oil pump trips with a failure of the Emergency Hydrogen Seal Oil pump to start
. Malfunctions required: 1 (Main Seal Oil Pump Trip / Failure Of Emergency Seal Oil Pump To Auto Star t) Success Path:
The team starts the Emergency Hydrogen Seal Oil pump.
Event Five - Main Power Transformer Trouble The team responds to a TR 2 high oil temperature condition.
Malfunctions required: 1 (TR 2 high oil temperature)
Success Path:
Completes DOA 6100-01, Main Transformer Trouble.
Begins load drop per DGP 03
-01, Power Changes.
Event Six - FWLC Controller, FW Flow Indication Fails Upscale Indicated Feedwater flow slowly fails upscale, causing FRVs to close. This results in lowering RPV level.
Malfunctions required: 1 FW flow fails upscale Success Path:
Team takes manual control of FWLC; and/or, Places FWLC in 1
-Element control.
ILT-N-1 Page 5 of 30 Rev. 00 (04/12)
Event Seven
- Steam Leak in the Drywell / Manual Scram A small steam leak develops in the Drywell.
Malfunctions required: 1 (Steam Leak in the Drywell
) Success Path:
Performs a manual scram.
Event Eight
- Loss of Bus 23
-1 and 28 / Emergency Depressurization The steam leak in the Drywell increases enough to require Containment sprays. When the Team attempts to spray the Drywell, Bus 23
-1 and 28 trip on overcurrent. The leak worsens and Primary Containment pressure exceeds the PSP limit. The Team performs an Emergency Depressurization.
Malfunctions required: 2
(Steam leak in the Drywell).
(Bus 23-1 and 28 overcurrent trips).
Success Path:
The Team performs an Emergency Depressurization.
ILT-N-1 Page 6 of 30 Rev. 00 (04/12)
PRE-SCENARIO ACTIVITIES 1 If applicable, conduct pre
-scenario activities in accordance with TQ
-JA-150-08, SIMULATOR EXAMINATION BRIEFING. 2 Simulator Setup (the following steps can be done in any logical order)
- a. a. Initialize simulator in an IC which allows establishing the following: (Jump Drive IC 1 60 can be used)
- 1) Reactor power at ~
9 5%. 2) Generator at ~
950 MWe. b. Cut in/out Cond Demins as needed, to maintain DP within limits
. c. Ensure running Condensate pump amps within limits.
- d. Advance the chart recorders.
3 Verify the following simulator conditions:
- a. 2 B and 3B Service Water pumps running. b. 2B TBCCW pump running with 2A available.
4 Place the following equipment out of service:
- a. None NOTE: Perform the above setup prior to running the setup CAEP file.
5 For the TR 2 high oil temperature Event , set all the outside air temperatures to 85
°F by R UNNING CAEP file: Change Air Temps.cae 6 Run the initial setup CAEP file: ILT-N-1.cae 7 Complete the Simulator Setup Checklist.
Symbols are used throughout the text to identify specific items as indicated below:
Critical Tasks Time Critical Tasks Required Actions Optional Actions
ILT-N-1 Page 7 of 30 Rev. 00 (04/12)
Event One - TBCCW Pump Degrading / Swap TBCCW pumps.
Trigger Position Crew Actions or Behavior 1 FLOOR INSTRUCTOR / SIMULATOR OPERATOR / ROLE PLAY:
If the team announces that they will adjust gains, inform them an extra NSO will perform the adjustment. Then:
Tell the team you are time compressing.
Direct the SIMULATOR OPERATOR to activate trigger 1 and verify gains within limits. Inform the team the gains are adjusted.
(NOTE: trigger 1 can be toggled OFF, then back ON as many times as necessary to adjust gains)
ROLE PLAY:
As the EO sent to the 2B TBCCW pump , make the following report to the Control Room:
"The 2 B TBCCW pump is making a lot of noise and the motor is very hot".
2 & 3 SIMULATOR OPERATOR
- When the Communicator makes the above report, activate Trigger 2, This simulates the 2B TBCCW pump degrading.
Trigger 3 automatically activates as the degradation progresses.
ROLE PLAY:
EO to check operation of 2A TBCCW pump following start: report the "2A TBCCW pump is operating normally".
BOP Acknowledges and announces alarm(s):
923-4 D-2, U2 or U3 TBCCW Press Lo. Checks TBCCW system parameters Acknowledges report from the field and updates the Team CRS Enters DOA 3800-01, Loss of Turbine Building Closed Cooling Water
. Directs swapping TBCCW pumps
. BOP Performs DOA 3800-01, Loss of Turbine Building Closed Cooling Water
. Starts 2A TBCCW pump. (Immediate action)
Secures 2B TBCCW pump. Directs EO to check operation of 2A TBCCW pump
. ATC Assists as directed.
ILT-N-1 Page 8 of 30 Rev. 00 (04/12)
Event One - TBCCW Pump Degrading / Swap TBCCW pumps.
Trigger Position Crew Actions or Behavior Event 1 Completion Criteria:
TBCCW pump s swapped. AND/OR, At the direction of the Lead Examiner
.
ILT-N-1 Page 9 of 30 Rev. 00 (04/12)
Event Two - Loss of RPS Trigger Position Crew Actions or Behavior ROLE PLAY:
At the discretion of the Floor Instructor/Evaluator, call as the Shift Manager and report:
"Engineering has determined the following equipment inoperable:
-1 EPA BKR 2-500-2B-2, 2B RPS MG SET 2B
-2 EPA BKR ALL other EPA breakers are operable
". 4 SIMULATOR OPERATOR ACTIONS:
After The Team has determined the Tech Spec requirements or at the discretion of the Floor Instructor/Evaluator, activate trigger 4, which inserts a 2B RPS MG Set overcurrent trip to simulate trip of 2B RPS MG SET 2B
-1 EPA BKR. NOTE: Communications from the AEER should be over the phone (not the radio)
ROLE PLAY:
EO to check 2B RPS MG set: wait 2 min. and call on the phone and report
. "The 2A RPS Bus voltage is 0.0".
-1 EPA BKR has tripped but ONLY has the POWER IN, MOTOR GEN red indicating light lit ". (All other lights are NOT lit) "The 2B RPS MG SET 2B
-2 EPA BKR has NO indicating lights lit".
5 NOTE: When the team begins to re
-power 2A RPS bus, report: "Another NSO has completed the steps for bypassing OPRMs".
EO to power the 2A RPS bus from the Reserve source: wait five minutes, call the U2 NSO on the phone and report "I am at step G.3.
l.(1) of DOP 0500
-03, for supplying power to RPS 2A bus. The next several steps are yours.
When notified by the NSO to resume at step G.3.
l.(6) then after ~ 1 min, activate trigger 5. Call on the phone and report "I have completed DOP 0500-03 step G.3.
l.(6) thru step G.3.l.9. RPS Bus 2A has been reenergized from the alternate power supply". If asked:
"RPS Bus 2A AC voltage is 120".
CRS References Technical Specifications and determine s: TS 3.3.8.2 (RPS Electric Power Monitoring) Condition B: Remove associated in
-service power supply(s) from service within 1 hr.
May direct WEC to brief an operator to swap RPS Bus A to the alternate power supply per DOP 0500
-03, RPS Power Supply Operatio
Perform actions of DOA 0500
-05, Loss of RPS.
CRS Enters DOA 500
-05, Loss of Reactor Protection System Bus, and directs actions.
Directs swapping 2A RPS Bus to Reserve Power per DOP 0500
-03, RPS Power Supply Operati on.
ILT-N-1 Page 10 of 30 Rev. 00 (04/12)
Event Two - Loss of RPS Trigger Position Crew Actions or Behavior ATC Coordinates with an EO to restore power to the 2A RPS Bus per DOP 0500
-03, RPS Power Supply Operation.
Resets the RPS CH A half scram per DOP 0500
-07, Insertion/Reset of Manual Half Scram. CRS References Technical Specifications and determines:
TS 3.3.6.2 (Secondary Containment Isolation Instrumentation) Condition A:: Place channel in trip within 1 2 hr. (Failed in trip condition)
TS 3.3.7.1 (Control Room Emergency Ventilation (CREV) System Instrumentation) Condition A: Declare CREV System inoperable 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> from discovery of loss of CREV System Instrumentation alarm capability in both trip systems. NOTE: After restoring the RPS Bus, the Team should begin to identify and plan for system restoration back to their normal lineups.
CRS Coordinates restoration of affected plant systems.
TEAM Resets the Division 2 Refuel Floor Rad Monitor and Reactor Building Vent Rad Monitor. Restores Reactor Building Ventilation IAW DOP 5750
-02, Reactor Building Ventilation and secures SBGT IAW DOP 7500
-01, SBGT Operation.
Resets ACAD/CAM system per DOP 2400
-01 to reclose the 2
-2499-3B and 4B valves. Restarts RWCU per DOP 1200
-03, RWCU System Operation with the Reactor a t Pressure. CRS Coordinates restoration of affected plant systems.
Event 2 Completion Criteria: RPS Bus 2A reenergized and plans for restoration of affected plant systems in progress.
OR, At the discretion of the Floor Instructor/Lead Evaluator.
ILT-N-1 Page 11 of 30 Rev. 00 (04/12)
Event Three - Isolation condenser Tube Leak Trigger Position Crew Actions or Behavior 7 Simulator Operator:
At the discretion of the Floor Instructor/Evaluator, activate trigger 7, which initiates a tube leak in the Isolation Condenser.
ROLE PLAY:
NLO to IC Area: (wait 3 min.) Report, "there is no evidence of steam leakage in the area but the IC is making noises. It sounds like metal parts expanding (creaking)".
ROLE PLAY:
NOTE: (IC temps may be viewed on RNI display IC1, Isolation Condenser)
NLO to check IC Vent outside: (WAIT 3 MIN.)
If IC shell temp is > 190°F, report "some fog/steam exiting from the vent" If IC shell temp is < 190°F, report "NO steam exiting vent".
ROLE PLAY:
Chemistry to sample IC shell side: Report "shell side sample results will take approximately 90 minutes".
ROLE PLAY:
Rad Protection to survey IC Vent outside: Report "the radiological surveys will be initiated".
Security to control access to IC Vent outside: Report "the area will be roped off".
BOP Announces alarms for the Isolation Condenser (IC) and refers to the following DANs:
902-3 B-3, IC Hi Rad 902-3 C-4, IC Hi Temp Monitors temperature and radiation levels for the Isolation Condenser CRS Directs/verifies Operators take action per DAN 902
-3 C-4. After determining there is a leak in the IC, enters DOA 1300
-01. Declares the Isolation Condenser Inoperable.
Requests Chemistry to sample Iso
-Condenser shell side for change in activity.
BOP Performs DOA 1300
-01, Isolation Condenser Tube Leak, as directed and monitors:
IC vent rad levels.
IC shell side water level.
-1. IC area temperatures from 902
-21 panel. IC area rad levels from 902
-2 panel BOP Reports IC vent rad above 3 mr/hr and IC shell side level and temperatures rising.
ILT-N-1 Page 12 of 30 Rev. 00 (04/12)
Event Three - Isolation condenser Tube Leak Trigger Position Crew Actions or Behavior BOP Isolates the IC by closing the following valves per DAN 902
-3 B-3 or DOA 1300
-01. MO 2-1 301-1 MO 2-1301-2 MO 2-1301-3 MO 2-1301-4 AO 2-1301-17 AO 2-1301-20 MO-2-1301-10 MO 2-4399-74 BOP May dispatch an NLO to the Isolation Condenser area.
May bypass the IC area hi rad input to the Rx Bldg Hi Rad alarm.
TEAM Dispatches personnel outside to investigate discharge from the vent.
TEAM Calls Chemistry and requests a sample of the shell side water to analyze for a change in activity.
TEAM Directs Rad Protection to conduct radiological surveys.
TEAM Directs Security to limit access underneath the IC vent.
CRS References Tech Specs and determines:
LCO 3.5.3.A.1: Verify HPCI is OPERABLE immediately.
LCO 3.5.3.A.2: Restore IC System to OPERABLE status within 14 days.
Event 4 Completion Criteria:
DOA 1300-01 is addressed, The IC is isolated, Tech Spec requirements are determined
, AND / OR, At the discretion of the Lead Examiner.
ILT-N-1 Page 13 of 30 Rev. 00 (04/12)
Event Four - Main Seal Oil Pump Trip / Failure Of Emergency Seal Oil Pump To Auto Start Trigger Position Crew Actions or Behavior 8 Simulator Operator:
At the direction of the Lead Evaluator, insert trigger 8 to trip the Main Hydrogen Seal Oil Pump (MSOP).
9 Simulator Operator / Role Play:
NLO directed to investigate local panel trouble alarm, wait 1 min., activate trigger 9, and then report that "The local alarm is Differential seal oil pressure low
". If the ESOP is running, add to the report "and it reset".
NLO to report local Generator H 2 pressure: Wait 1 min, and then report "the local Generator H 2 pressure indicates (use value from Monitor program) psig." Role Play:
NLO sent to check the MSOP breaker:
Wait 3 min. then report, "The MSOP breaker is tripped in the tripped free position".
If directed to check the MSOP, report, "I can't find anything wrong with the MSOP.
NLO to align Seal Oil and H 2Note: The simulator does not model the Seal Oil and H valves: Wait 2 min, then report "the (Insert nomenclature of requested valves) are (insert position requested)".
2 valves. BOP Announces:
902-7 A-11, H 2 MSOP trip ped. Seal Oil Sys Oil Pp/Vac Pp Trip, alarm.
Generator machine gas pressure dropping.
BOP Determines ESOP did NOT automatically start as expected
. Starts the ESOP
. TEAM Makes PA announcement warning of H 2 and /or oil vapor around the main generator.
CRS Directs starting ESOP.
Enters DOP 67 00-20, 480V Circuit Breaker Trip.
BOP Announces 902
-7 E-11, H 2 Dispatches NLO to investigate local panel trouble alarm.
Seal Oil & Alterrex Pnl Trouble, alarm BOP Performs DOP 6700
-20, 480V Circuit Breaker Trip, as directed:
-2 to investigate the MSOP trip.
Places MSOP in PTL.
ILT-N-1 Page 14 of 30 Rev. 00 (04/12)
Event Four - Main Seal Oil Pump Trip / Failure Of Emergency Seal Oil Pump To Auto Start Trigger Position Crew Actions or Behavior BOP Performs DAN 902
-7 A-11, H 2 Directs NLO to close:
Seal Oil Sys Oil Pp/Vac Pp Trip, additional actions:
o H-09, U2 H2 SEAL OIL VACUUM TK INLET SPRYA SV.
o H-13, U2 MAIN SEAL OIL PMP DISCH STOP CHC VLV.
Stops the Seal Oil Vacuum Pump.
Monitors 250 VDC electrical system (DOP 6900
-01). Periodically monitors seal oil bearing pressure, hydrogen purity, and hydrogen differential pressure.
Enters DOP 5320
-11, Filling and Venting the Generator with Hydrogen to Raise Purity and/or Pressure during Normal Operation, if necessary.
Directs an Operator to check for hydrogen at Generator shaft seal in Alterrex housing.
ATC Assists as directed.
Event 5 Completion Criteria:
ESOP started, AND/OR, At the discretion of the Floor Instructor
ILT-N-1 Page 15 of 30 Rev. 00 (04/12)
Event Five - Main Power Transformer Trouble Trigger Position Crew Actions or Behavior 1 0 SIMULATOR OPERATOR:
At the direction of the Lead Evaluator, insert trigger 1 0 to cause TR2 trouble alarm and Process Computer indication of 95°C ramping up at 1°C every 5 minutes (viewable on trend for computer point E230).
ROLE PLAY:
EO sent to investigate TR2 high oil temperature, wait 3 min. then report, "TR2 local thermometer indicates 95°C and all coolers are operating. "Wait about 5 min. and report local thermometer indicates 97°C and slowly rising. Continue to report temperature rise of 1°C per 5 min. until load reduction is commenced.
NSO checks OIS to verify recirc runback logic is NOT armed: Cue NSO that recirc runback logic is NOT armed.
ROLE PLAY:
Engineering: Inform Team that "I recommend reducing load to reduce TR 2 oil temperature below the 65 °C temperature rise limit of DOA 6100
-01, Attachment C.
NOTE: Trigger 11 will automatically activate if load is dropped causing oil temperature to drop. 11 SIMULATOR OPERATOR / ROLE PLAY:
If the EO is directed to open the TR2 high oil temperature cutout switch, wait 3 min.
- insert trigger 11, and then report, "TR2 high oil temperature cutout switch is open."
This trigger will automatically activate when the Team has dropped load and TR 2 oil temperature has dropped below 94.5
°C. QNE: If contacted, inform the team you will come to the Control Room.
12 13 SIMULATOR OPERATOR:
Verify trigger 12 automatically activates when generator load is dropped to 850 MWe. This causes Process Computer indication for TR2 oil temperature to begin dropping to 97.0°C over 5 min.
Verify trigger 13 automatically activates when generator load is dropped to 775 MWe or At the direction of the Lead Evaluator. This causes Process Computer indication for TR2 oil temperature to begin dropping to 9 0.0 °C over 3 min.
ILT-N-1 Page 16 of 30 Rev. 00 (04/12)
Event Five - Main Power Transformer Trouble Trigger Position Crew Actions or Behavior TEAM Announces Main TR2 Trouble alarm.
Refers to Sequence of Events Recorder.
Reports TR2 high oil temperature.
References DAN 902
-8 C-11, Main TR2 Trouble.
Enters DOA 6100
-01, Main Transformer Trouble.
Determines TR 2 oil temperature using Process Computer point E230.
Dispatches EO to investigate TR2 high oil temperature.
Determines temperature rise is >65 °C using Attachment C of DOA 610 0-01. Contacts Engineering for guidance.
CRS Announces entry into DOA 6100
-01, Main Transformer Trouble.
Directs load drop per DGP 03
-01, Power Changes
, until Main Transformer oil temperature is within limits.
BOP Directs HVO to open the cutout switch for TR2 high oil temperature.
ATC Begins load drop per DGP 03
-01, Power Changes, as directed.
Due to FCL >93%, reduces power by 80 MWe of generator power OR 9% of APRM power by inserting control rods in reverse sequence (preferred) or CRAM rod insertion.
Reduces Reactor power by decreasing core flow as necessary to lower TR 2 oil temperature
. Reports that TR 2 temperature is dropping below the limit.
CRS Notifies TSO of TR 2 problem and load drop.
Event 6 Completion Criteria:
Load dropped enough to drop TR 2 oil temperature below limit
, AND/OR, At the discretion of the Floor Instructor
ILT-N-1 Page 17 of 30 Rev. 00 (04/12)
Event Six
- FWLC Controller, FW Flow Indication Fails Upscale Trigger Position Crew Actions or Behavior 6 SIMULATOR OPERATOR / ROLE PLAY:
At the discretion of the Lead Examiner, activate trigger 6.
This slowly fails 2B RFP flow transmitter output upscale
. ROLE PLAY:
IMD to investigate: wait a few minutes and then report, "the 2B Feedwater Flow transmitter has failed. Feedwater level control can be placed in 1-Element control and returned back to automatic control".
Team Announces RPV level dropping. May receive the following alarm:
902-5 F-8, RPV Lvl Lo
. ATC Performs DOA 0600-01, TRANSIENT LEVEL CONTROL, and takes manual control of the FWRVs or places the FWRVs in 1
-element. CRS Enters DOA 0600
-01, TRANSIENT LEVEL CONTROL.
Requests IMD to troubleshoot.
Team Enters DGA
-07, Unpredicted Reactivity Addition
. CRS Directs placing FWLC in 1
-Element and back to automatic control.
ATC Places FWLC in 1-Element and back to automatic control per DOP 0600
-06, Feedwater Regulating Valve (FWRV) Operation
. BOP Monitors panels and assists as directed.
Event 3 Completion Criteria:
FWLC returned to automatic control, AND/OR At the direction of the Lead Examiner.
ILT-N-1 Page 18 of 30 Rev. 00 (04/12)
Event Seven
- Small Steam Leak in Drywell / Manual Scram Trigger Position Crew Actions or Behavior 14 SIMULATOR OPERATOR:
At the discretion of the Lead examiner, activate trigger 14, which causes a small Main Steam line leak to develop in the Drywell. Role Play:
U-3 NSO to report Drywell pressure status: Report "U
-3 Drywell pressure is 1.2 psig and steady". TEAM Recognizes and announces that Drywell pressure is slowly rising.
ATC Performs the following actions per DOA 0040
-01, Slow Leak, as directed: Maintain Level with FWLCS (immediate action).
Monitors leakage rate, reactor water level, and Drywell pressure.
Inserts manual reactor scram prior to 1.5 psig DW pressure BOP Performs the following actions per DOA 0040
-01 Slow Leak, as directe d: Notifies Shift Supervisor and Rad Protection.
Monitors for EP conditions.
Directs search for leak.
Shutdown H 2 Makes PA announcement.
Addition. Verify Crib House inlet temperature is <95 o Initiates Torus cooling per "Hard Card".
F. Role Play:
NLO to check Drywell CAM: (wait 2 min.)
Report, "The Drywell CAM is trending up".
NLO to search for leak Report, "I am on my way out to check for leaks".
NLO to check Cribhouse inlet temperature: (wait 5 min.)
Report, "Cribhouse inlet temp is 70 o F". CRS Enters and directs performance of DOA 0040
-01, Slow Leak.
Set Scram contingency of 1.5 psig DW pressure.
May enter DGP 02
-03, Reactor Scram, and direct taking scram preparatory actions.
Prior to reaching the Drywell Pressure scram setpoint, directs a manual reactor scram per DGP 02
-03, Reactor Scram.
ATC / BOP Performs scram preparatory actions per DGP 02
-03, Reactor Scram, as directed.
Starts MSP and TGOP.
Trips H 2 addition.
ILT-N-1 Page 19 of 30 Rev. 00 (04/12)
Event Seven
- Small Steam Leak in Drywell / Manual Scram Trigger Position Crew Actions or Behavior ATC Performs the following actions per DGP 02
-03, Reactor Scram, as directed:
Presses scram pushbuttons Places mode switch in shutdown Check rods inserted.
Verifies Recirc Pumps run back.
Maintains RPV/L between +25 and +35 inches or as directed by Unit Supervisor.
Inserts SRM/IRMs.
BOP Verifies Turbine and Generator tripped.
Check auxiliary power transferred to RAT.
May start maximum Torus cooling per DGP 02
-03 Hardcard.
TEAM Verifies the following as time allows:
Group Isolations Automatic start of ECCS systems Automatic start of EDGs.
CRS Enters DEOP 100, RPV Control, due to high Drywell Pressure and/or low Reactor water level.
Event 7 Completion Criteria:
Reactor scrammed.
AND/OR, Or at the discretion of the Lead Examiner.
ILT-N-1 Page 20 of 30 Rev. 00 (04/12)
Event Eight - Loss Of Bus 23
-1 and 28 / Emergency Depressurization Trigger Position Crew Actions or Behavior 1 5 SIMULATOR OPERATOR:
At the discretion of the Lead Evaluator, activate trigger 15, which increases the steam leak in the DW enough to require initiating Drywell sprays.
TEAM Recognizes and announces that Drywell pressure is rising rapidly.
CRS Enters DEOP 0200
-01, Primary Containment Control, when Drywell pressure reaches 2 psig and performs/directs:
Verifying of Torus water level <27.5 ft.
Initiation of Torus sprays.
Monitoring of Drywell temperature (Drywell sprays may be initiated for temperature control) Monitoring Torus Temperature.
Monitors Torus level.
ROLE PLAY:
EO to check operation of the EDGs after auto start: Wait 3 minutes and then report "the EDGs are operating normally".
CRS Per DEOP 0200
-01, Primary Containment Control, when Drywell pressure reaches 9 psig directs: Verifying Recirc Pumps and Drywell Coolers tripped.
Verifies the Drywell spray initiation curve prior to the operator manually opening any of the Drywell spray valves. Then directs the Operator to initiate Drywell Sprays.
Initiation of Drywell sprays.
BOP Performs DEOP 0200
-1, Primary Containment Control, actions as directed:
Monitors Drywell temperature and pressure and attempts to initiate torus sprays and drywell sprays pre Hard Card LPCI/CCSW OPERATION, as directed.
16 SIMULATOR OPERATOR:
Verify trigger 16 automatically activates when MO 1501
-27A begins to open. This trips Bus 23-1 and 28 on overcurrent. As a result, Div. I of Drywell sprays cannot be initiated.
ATC / BOP Initiates Drywell Sprays
. Notices and reports the loss of ECCS equipment powered from Bus 23
-1. Reports the loss of Bus 23
-1 and 28. Reports the "B" LOOP of Drywell Spray is initiated, but "A" LOOP could not be initiated.
US Directs Operators to investigate the loss of Bus 23
-1 and 28. Directs entry into DGA
-12 for Partial Loss of AC Power.
ILT-N-1 Page 21 of 30 Rev. 00 (04/12)
Event Eight - Loss Of Bus 23
-1 and 28 / Emergency Depressurization Trigger Position Crew Actions or Behavior BOP Refers to DAN 902
-8 F-5, 4KV Bus 23
-1 Overcurrent.
As directed, Performs DGA
-12, Partial or Complete Loss of AC power:
Takes actions per DGA 12 for any faulted buses.
Recognizes the loss of Bus 28.
Dispatches EO to Bus 23
-1 to investigate the loss of Bus 23
-1. May enter DOA 6500
-01, 4kV Breaker Trip.
NOTE: If team crossties Bus 28 and 29 and Bus 29 trips, allow the team to re
-energize Bus 29 from Bus 24
-1. ROLE PLAY:
EO to bus 23
-1: Wait 2 min. then report "The feed breaker to Bus 23
-1 from Bus 23 has an overcurrent flag up on it and will not reset".
EO to Bus 28: Wait 2 min. then report "Bus 28 has an overcurrent flag up and will not reset" ROLE PLAY:
If contacted as EMD Foreman: Respond, "I will report to Bus 23
-1". NOTE: EMD personnel will not report back.
DO NOT REPORT BACK ON ATTEMPTS TO OPEN DW SPRAY VALVE UNTIL after Torus bottom pressure is > 20 #.
ATC / BOP May dispatch an Operator to attempt to manually open "A" LOOP of drywell spray.
ROLE PLAY:
EO to open "A" LOOP of drywell spray: Wait 2 min, then report "The handwheel for MO 2
-1501-28A will not engage".
17 SIMULATOR OPERATOR:
After the Team has attempted to put on Drywell Sprays and at the discretion of the Lea d Evaluator, activate trigger 17, which increases the Main Steam line leak enough to require the Team to Emergency Depressurize due to exceeding PSP curve.
CRS May anticipate Emergency Depressurization and direct opening turbine bypass valves.
BOP If directed, opens turbine bypass valves.
ILT-N-1 Page 22 of 30 Rev. 00 (04/12)
Event Eight - Loss Of Bus 23
-1 and 28 / Emergency Depressurization Trigger Position Crew Actions or Behavior CRS Recognizes that Emergency Depressurization per DEOP 0400
-02 is necessary due to one of the below:
o Drywell temperature cannot be maintained below 281 o o Exceeding the PSP.
F. Enters DEOP 400
-02, Emergency Depressurization, and directs
- If Drywell pressure >2 psig, prevention of injection from LPCI/CS pumps not needed for core cooling.
Initiation of Iso Condenser to maximum flow.
Verification of Torus level > 6ft.
Opening all ADS valves.
Verifying all relief valves o pen. BOP Performs DEOP 400
-02, Emergency Depressurization, as directed.
If Drywell pressure is greater than +2 psig, prevents injection from LPCI/CS pumps not needed for Core cooling per Hard Card, LPCI INJ/CC CONTROL/SHUTDOWN.
Initiates Iso Condenser to maximum flow per Hard Card, ISOLATION CONDENSER.
Verifies Torus level >6 feet.
Open s all ADS valves Verifies all relief valves open.
Event 8 / Scenario Completion Criteria:
Emergency depressurization in progress.
AND/OR Or at the discretion of the Lead Evaluator.
ILT-N-1 Page 23 of 30 Rev. 00 (04/12)
Critical Tasks
- (RPV-5.1) When drywell pressure exceeds the suppression chamber spray initiation pressure or before containment pressure exceeds the Pressure Suppression Pressure, INITIATE drywell/containment sprays, while in the safe region of the drywell spray initiation limit or above the containment spray initiation pressure. (PC-6.1When suppression chamber pressure cannot be maintained below the pressure suppression pressure limit, INITIATE emergency depressurization before drywell design pressure is exceeded.
)
ILT-N-1 Page 24 of 30 Rev. 00 (04/12)
PROCEDURE TITLE DAN 902-3 B-3 IC HI RAD DAN 902-3 C-4 IC HI TEMP DAN 902-5 F-8 RPV LVL LO DAN 902-7 A-11 H2 SEAL OIL SYS OIL PP/VAC PP TRIP DAN 902-7 E-11 H2 SEAL OIL & ALTERREX PNL TROUBLE DAN 902-8 C-11 MAIN TR2 TROUBLE DAN 923-4 D-2 U2 OR U3 TBCCW PRESS LO DEOP 0100 RPV CONTROL DEOP 0200-01 PRIMARY CONTAINMENT CONTROL DEOP 0400-02 EMERGENCY DEPRESSURIZATION DGA 07 UNPREDICTED REACTIVITY ADDITION DGA 12 PARTIAL OR COMPLETE LOSS OF AC POWER DGP 02-03 REACTOR SCRAM DGP 03-01 POWER CHANGES DOA 0040-01 SLOW LEAK DOA 0500-05 LOSS OF RPS DOA 0600-01 TRANSIENT LEVEL CONTROL DOA 1300-01 ISOLATION CONDENSER TUBE LEAK DOA 3800-01 LOSS OF TURBINE BUILDING CLOSED COOLING WATER DOA 6100-01 MAIN TRANSFORMER TROUBLE DOP 0500-03 RPS POWER SUPPLY OPERATION DOP 0500-07 INSERTION/RESET OF MANUAL HALF SCRAM DOP 0600-06 FEEDWATER REGULATING VALVE (FWRV) OPERATION DOP 5750-02 REACTOR BUILDING VENTILATION DOP 6700-20 480V CIRCUIT BREAKER TRIP DOP 7500-01 SBGT OPERATION TS 3.3.8.2 RPS ELECTRIC POWER MONITORING TS 3.5.3 ISOLATION CONDENSER
ILT-N-1 Page 25 of 30 Rev. 00 (04/12)
EXAM ILT-N-1 QUANTITATIVE ATTRIBUTES 9 Total malfunctions (5
-8) 2 Malfunctions after EOP entry (1
-2) 4 Abnormal events (2
-4) 2 Major transients (1
-2) 2 EOPs entered/requiring substantive actions (1
-2) 1 EOP contingencies requiring substantive actions (0
-2) 2 Critical tasks (2
-3)
ILT-N-1 Page 26 of 30 Rev. 00 (04/12)
Computer Aided Exercise Programs
- ILT-N-1.cae # For ILT Class 11
-1 NRC Exam
- Written by MP
- Rev 00 # Date 05/12
- INITIAL CONDITIONS
- Sets APRM Master Gain pot to 1.0 irf niagain 1.0
- Inserts failure of ESOP to auto start.
imf t53 # Sets TR 2 oil temperature at 94.0 deg. F.
imf e230 94.0
- EVENT TRIGGERS
- Event Trigger 1 sets gain for all 6 APRMs.
trgset 1 "0" trg 1 "irf niagainf true"l2
- Trigger 2 Simulates 2B TBCCW pump degradation by rampimg down pump speed.
trgset 2 "0"l2
trg 2 "ramp wtnp(2) 1.0 0.0 5:00"l2
- Trigger 3 Activates when 2B TBCCW pump speed is <0.02" # Simulates 2B TBCCW pump degradation by rampimg down pump spe ed. trgset 3 "(wtnp(2) .lt. 0.1)"l2
trg 3 "ramp wtnp(2) 0.01 0.001 1:00:00"l4
irf b03 (5) truel6
- Event Trigger 6 Slowly fails 2B RFP flow transmitter output upscale.
trgset 6 "0"l6 imf rlmrfpb (6) 4.0e6 4:00l6
- Event Trigger 7 Inserts an IC tube leak.
trgset 7 "0"l6 imf ictublk (7) 2.0l8
- Event Trigger 8 Trips Generator MSOP.
trgset 8 "0"l8 imf k50 (8)l8 # Event Trigger 9 Acknowledges the Alterrex panel trouble alarm.
trgset 9 "0"l8 irf t81 (9) truel10
- Event Trigger 10 actuates TR2 trouble alarm due to high oil temperature and
ILT-N-1 Page 27 of 30 Rev. 00 (04/12)
- provides Process Computer TR 2 oil temp of 94.0 deg. and slowly rising. trgset 10 "0"l10 imf ser1633 (10 1:15) onl10 mmf e230 (10) 98.0 5:00l10
- Event Trigger 11 deletes TR2 trouble alarm to simulate either:
- opening the cutout switch; or, # after load drop, oil temperature falling below the alarm setpoint.
trgset 11 "(ppg228 .lt. 850.0) .and. (pp_e230_2v .lt. 94.5)"l12
trg 11 "dmf ser1633"l12
- Event Trigger 12 Activates when load is dropped. (MWe < 850.0)
- Ramps Process Computer TR 2 oil temp over longer time
- to make its increase to appear to slow down.
trgset 12 "ppg228 .lt. 850.0"l12 trg 12 "mmf e230 97.0 5:00"l12
- Event Trigger 13 Activates when load is dropped. (MWe < 775.0)
- Ramps Process Computer TR 2 oil temp back below the alarm point.
trgset 13 "ppg228 .lt. 775.0"l14
trg 13 "mmf e230 90.0 3:00"l14
- Event Trigger 14 Inserts a steam leak upstream of the restrictors.
trgset 14 "0"l14
imf i21 (14) 0.002 5:00 0.0025l14
trgset 15 "0"l16
trg 15 "mmf i21 0.4"l16
- Event Trigger 16 Activates when DW Spray valve MO 1501
-27A starts to open.
- Trips Bus 23
-1 and Bus 28 on overcurrent.
trgset 16 "lpv27a .gt. 0.01"l16
imf k23 (16)l16
imf k40 (16)l18
- Event Trigger 17 Increases the steam leak from 2.0% to 6.0% over 5 minutes.
trgset 17 "0"l18
trg 17 "mmf i21 6.0 5:00 2.0"l18
- END
- Change Air Temps.cae
- Written by MP
- Rev 11 # Date 02/12
- This CAEP file sets the outside air temps to 85 deg.
- The first group of variables changed are the outside air temps and
- the ventilation air inlet temps.
- Sets Met Twr Air Temp.
set ppc320 = 85.0
- Sets ambient and vent inlet temps.
set istambt = 85.0
set vrt1 = 85.0
ILT-N-1 Page 28 of 30 Rev. 00 (04/12) set vrt3 = 85.0l2
set vrt1u3 = 85.0l2 set vtt1 = 85.0l2 set vtt2 = 85.0l2
set vtt31 = 85.0l4
set vtt32 = 85.0l4
set vtt4 = 85.0l4
- Sets Exh temps so they quickly stabilize.
- Sets U2 RB temps 10 deg above ambient.
set vrt2 = 95.0l6
set vrt2a = 95.0l6
- Set3 U3 RB temps 20 deg above ambient.
set vrt2a3 = 105.0l6
set vrt2u3 = 105.0l6
- Sets U2&3 TB Exh temps 30 deg above ambient set vtt3 = 115.0l8 set vtt33 = 115.0l8
- Sets East TB Exh temps 8 deg above ambient set vtt5 = 93.0l8
- Sets other RB temps to 10 deg above ambient set vrtrb0 = 95.0l8
set vrtrb1 = 95.0l10
set vrtrb2 = 95.0l10
set vrtrb3 = 95.0l10
- END ILT-N-1 Page 29 of 30 Rev. 00 (04/12)
Unit 2 Risk: GREEN Unit 3 Risk: GREEN Unit 2 is in Mode 1 at Full Power
, Leading Thermal Limit: MFLCPR @ 0.881 Action limit: 0.980 Equipment Unavailable: None Protected Equipment: None Unit 3 is in Mode 1 at Full Power Leading Thermal Limit: MAPRAT @ 0.819
Action Limit: 0.980 Equipment Unavailable: None Protected Equipment: None Current Action Statements None LCO Started:
LCO Expires:
TS Cause: Unit 1 Plant Status Today U1 Diesel Oil Storage Tank Transfer House has grating removed. Currently roped off with pump installed to pump to U1 Oil Seperator Pit as required. Outside operator monitor and pump as necessary.
Today Chem Cleaning ventilation status:
HV-1A/EF-1A are secured due to HV
-1A inlet and outlet dampers being shut with fan on, IR# 913157, WO 1239746. HV-1B/EF-1B are secured due to HV
-1B throwing its belts. WO 1156150.
HVAC -1 ON. HV-2 running.
Switchyard Status Today 138 KV Bus 1 Feed To TR 22 Combi Units has low oil in the 'C' phase, ComEd WO #276162 Today HVO: Exercise CAUTION while in the 345 KV Yard due to excavation being performed in the area.
Marv Evans reports holes being dug near manual switch disconnects 345 KV Blue Bus. Plywood will be installed over the holes if access is needed, but be aware there are holes under the plywood.
SSC called from the 345 KV yard reporting that the cable trough covers are removed to prep for upcoming work. Be careful.
ILT-N-1 Page 30 of 30 Rev. 00 (04/12)
Unit 2 Plant Status Today Unit 2 Activities
- Shift 1 Activities ****
- Shift 2 Activities ****
- Shift 3 Activities ****
Today **** Unit 2 Procedures In
-Progress **** Do Not Delete ****
Dresden Generating Station 11-1 (2012-301) NRC - SCENARIO 02 HVAC - REACTOR BUILDING FANS, SWAP FOR MAINTENA NCE FW - FWRV, REMOVE FROM SERVICE FOR MAINTENANC E HVAC - RECIRC MG VENT FAN, DEGRADES CAUSING LOW FLOW HPCI - SYSTEM, INOPERABLE DUE TO FAILURE OF TURNING GEAR TO ENGA GE DWEDS - ALARM FAILURE, MANUALLY PUMP SUMPS MAIN STEAM
- ERV, SPURIOUS OPENIN G MANUAL SCRAM
- LOSS OF INSTRUMENT AIR SYSTEM EMERGENCY DEPRESSURIZE - ON 2 AREAS ABOVE MAX SAFE RADIATION LEVELS DUE TO HPCI STEAM LINE LEAK INTO THE HPCI ROOM. EXAM MATERIAL
Rev. 00 04/1 2 Developed By:
Exam Author Date Approved By:
Facility Representative Date ILT-N-2 Pa ge 2 of 29 Rev. 00 (04/12)
Scenario Outline Station: Dresden Station Scenario No.:
11-1 (20 12-301) NRC - Scenario 0 2 Evaluators Operators / crew position
/ ATC / BOP Initial Conditions:
/ CRS Initial Power = 7 0% Load dropped to support FRV Maintenance Turnover: Remove 2B FWRV From Service For Maintenance Swap Reactor Building Fans For Maintenan ce Event Place HPCI on the Turning Gear No. Malf. No. Event Type* Event Description 1 NONE N BOP HVAC - Reactor Building Fans, Swap For Maintenance 2 NONE N ATC FW - FWRV, Remove From Service For Maintenance 3 RRMFAEXH C ATC HVAC - Recirc MG Vent Fa n, Degrades Causing Low Flow 4 HPTGFAIL C / T BOP HPCI - System, Inoperable Due t o Failure of Turning Gear to Engage 5 SER0512 C ATC DWEDS - Alarm Failure, Manually Pump Sumps 6 ADS3CBN ADS3CSD C / T BOP MAIN STEAM
- ERV, Spurious Opening 7 NP2 M TEAM Manual Scram
- Loss Of Instrument Air System 8 HPRMBRKP M TEAM EMERGENCY DEPRESSURIZE
- On 2 Areas Above Max Safe Radiation Levels Due To HPCI Steam Line Leak into the HPCI Room.
- (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor, (T)ech Spec
ILT-N-2 Pa ge 3 of 29 Rev. 00 (04/12)
Scenario Objective Evaluate the Team's ability to operate the plant with a steam leak requiring Emergency Depressurization.
Scenario Summary Initial Conditions:
- 1. Unit is at 7 0% power. 2. The following equipment is OOS:
- a. None 3. LCOs: a. None
Scenario Sequence The Team swaps Reactor Building Supply Fans
. The Team removes 2B FWRV from service.
2A Recirc MG vent fan degrades causing low ventilation flow. Recirc MG Set temperatures will rise. The Team starts 2B Recirc MG vent fan and secures 2A Recirc MG vent fan. The Team attempts to place the HPCI Turbine on the turning gear. The turning gear fails to engage causing the HPCI System to be inoperable. The Team address es Tech Spec requirements.
The Drywell Equipment Drain Sump level alarm fails which requires the Drywell Sumps pumped. The Team determines from the sump pumping that actual Drywell leakage has not increased.
An ERV spuriously opens due to an electrical failure. Pulling its fuses closes the ERV.
A large leak develops in the Instrument Air system. The Team will scram the reactor and close the outboard MSIVs due to the leak severity.
A Fuel Element Failure (FEF) and an unisolable HPCI steam line leak in the HPCI Room occur. When the HPCI Room temperature reaches Max Normal Level, (150 F) the Team will enter DEOP 0 300-01, Secondary Containment Control. The HPCI Room High Temperature isolation fails and the crew will attempt to close the HPCI steam line isolation valves MO 2301
-4 & 5 manually. Failures in the control logic for the MO 2301
-4 & 5 valves prevent closing the valves. The Team will Emergency Depressurize when 2 or more reactor building radiation levels exceed Max Safe Levels.
Event One - Swap Reactor Building Supply Fans When directed, swaps Reactor Building Supply Fans
. Malfunctions required: (None) Success Path:
Swaps Reactor Building Supply Fans
.
ILT-N-2 Pa ge 4 of 29 Rev. 00 (04/12)
Event Two
- Remove 2B FWRV from Service The Team removes 2B FWRV from service.
Malfunctions required:
0 (None) Success Path:
Performs DOP 0600
-0 6 , Feedwater Regulating Valve (FWRV) Operatio n, to remove 2B FWRV from service.
Event Three - Recirc MG Vent Fan Degrades Causing Low Flow 2A Recirc MG vent fan degrades causing low ventilation flow. Recirc MG Set temperatures will rise.
Malfunctions required:
1 (Degraded Recirc MG vent fan
) Success Path: The Team will start 2B Recirc MG Vent Fan and secure 2A Recirc MG vent fan.
Event Four - HPCI Inoperable Due to Failure of Turning Gear to Engage The Team attempts to place the HPCI Turbine on the turning gear. The turning gear fails to engage causing the HPCI System to be inoperable.
Malfunctions required:
1 (HPCI Turbine turning gear failure to engage
) Success Path:
The Team declares HPCI inoperable.
The Team references Tech Specs.
Event Five - Drywell Equipment Sump Level Alarm Failure The Drywell Equipment Drain Sump level alarm fails Malfunctions required:
1 (Drywell Equipment Drain Sump level alarm fail
) Success Path:
Pumps the Drywell Equipment Sump.
Determines from the sump pumping that actual Drywell leakage has not increased
ILT-N-2 Pa ge 5 of 29 Rev. 00 (04/12)
Event Six - Spurious ERV Opening An ERV spuriously opens.
Malfunctions required:
1 (ERV fails open)
Success Path:
Performs DOA 0250
-01, Relief Valve Failure, and pulls the ERV's control power fuses.
Event Seven
- Loss of Instrument Air / Reactor Scram A large leak develops in the Instrument Air system Malfunctions required:
1 (Instrument Air Leak
) Success Path:
Performs a manual scram.
Closes the outboard MSIVs.
Event Eight - FEF / Steam Leak in HPCI Room / Secondary Containment High Radiation / Emergency Depressurization A fuel element failure and an unisolable HPCI steam line leak in the HPCI Room occur Malfunctions required:
2 (Fuel Element Failure
) (Unisolable HPCI steam line leak in the HPCI Room
) Success Path:
Performs DEOP 0 300-01, Secondary Containment Control.
Performs DEOP 0 400-02, Emergency Depressurization
ILT-N-2 Pa ge 6 of 29 Rev. 00 (04/12)
PRE-SCENARIO ACTIVITIES 1 If applicable, conduct pre
-scenario activities in accordance with TQ
-JA-150-08, SIMULATOR EXAMINATION BRIEFING. 2 Provide the Team with marked up copies of the following: a. DOP 5750-02, Reactor Building Ventilation
. b. DOP 0600-06, Feedwater Regulating Valve (FWRV) Operation
. Mark Step G.11.h as N/A.
- c. DOP 2300-02, HPCI System Turning Gear Operation 3 Simulator Setup (the following steps can be done in any logical order)
- a. a. Initialize simulator in an IC which allows establishing the following: (Jump Drive IC 15 7 can be used)
- 1) Reactor power at ~7 0%. 2) Generator at ~6 30 MWe. b. Cut in/out Cond Demins as needed, to maintain DP within limits
. c. Ensure running Condensate pump amps within limits. d. Advance the chart recorders.
4 Verify the following simulator conditions:
- a. Verify 2A Recirc MG Vent fan running with 2B in standby.
- b. Verify BOTH 2A & 2B FWRVs in Master Auto.
. d. Verify Zinc Injection label in place for lined up to 2A RFP.
- e. Verify 2A & 2B IACs are operating with 3C IAC OFF.
- f. Verify 2A & 2B Reactor Building Vent fans running with 2C in standby.
5 Place the following equipment out of service:
- a. None NOTE: Perform the above setup prior to running the setup CAEP file.
6 Run the initial setup CAEP file: ILT-N-2.cae 7 Load but DO NOT RUN CAEP file: ILT-N-2 Rad.cae 8 Complete the Simulator Setup Checklist.
9 The Rad Malfunctions used in CAEP file ILT-N-2 Rad.cae do not reset when the IC is reset. Therefore, when the scenario is completed, EITHER:
ILT-N-2 Pa ge 7 of 29 Rev. 00 (04/12)
Symbols are used throughout the text to identify specific items as indicated below:
Critical Tasks Time Critical Tasks Required Actions Optional Actions
ILT-N-2 Pa ge 8 of 29 Rev. 00 (04/12)
Event One - Swap Reactor Building Supply Fans Trigger Position Crew Actions or Behavior 1 SIMULATOR OPERATOR / ROLE PLAY:
If requested to set APRM gains to 1, (wait 3 min) activate trigger 1, then report: "APRM gains are set to 1". (This trigger can be toggled OFF, then back ON to adjust the gains more than once).
ROLE PLAY:
At the direction of the Lead Examiner, call as the Shift Manager and direct the Team to start 2C Reactor Building Vent Fan and secure 2B Reactor Building Vent Fan. EO stationed at Reactor Building Vent Fans: If asked, report that "the Reactor Building Vent Fans operated as expected".
CRS Directs starting 2C Reactor Building Vent Fan and securing 2B Reactor Building Vent Fan per DOP 5750
-02, Reactor Building Ventilation
-02, Reactor Building Ventilation, as follows
. Place s switch 2B RBX vent fan C/S in TRIP
. IMMEDIATELY place s switch for 2C RBX vent fan C/S in CLOSE
. NOTE: C/S must be held in START long enough (20 seconds per DOP 5 750-02) for fan to develop sufficient flow, or fan will trip and standby fan will start.
ATC Monitors panel, provides assistance as directed.
Event 1 Completion Criteria:
Reactor Building Vent Fans swapped, AND/OR, At the direction of the Lead Examiner
.
ILT-N-2 Pa ge 9 of 29 Rev. 00 (04/12)
Event Two
- Remove 'B' FWRV from Service Trigger Position Crew Actions or Behavior ROLE PLAY:
At the direction of the Lead Examiner, call as the Shift Manager and direct the Team to remove 2B FWRV from service for maintenance.
CRS Directs ATC to remove 2B FWRV from service for maintenance per DOP 0600
-06, Feedwater Regulating Valve (FWRV) Operation for IMD to perform DIP 0600
-07. ATC Removes 2B FWRV from service for maintenance per DOP 0600
-06, Feedwater Regulating Valve (FWRV) Operation
. Verifies total Feedwater flow is 8.3 Mlbm/hr.
Verifies reactor level stable.
Places 2B FWRV REG VLV CONTROL STATION in MAN.
Verifies 2A FWRV operating in MASTER AUTO.
Slowly reduces 2B FWRV DEMAND to close 2B FWRV while verifying 2A FWRV automatically adjusts. Closes isolation valve MO 2
-3206B , 2B FW REG ISOL
Event 2 Completion Criteria:
2B FWRV removed from service, AND/OR, At the direction of the Lead Examiner.
ILT-N-2 Pa ge 10 of 29 Rev. 00 (04/12)
Event Three - Recirc MG Vent Fan Degrades Causing Low Ventilation Flow
. Trigger Position Crew Actions or Behavior NOTE: Ensure the ATC operator performs this Event 4 5 6 Simulator Operator:
At the discretion of the Lead Examiner, activate trigger 4 which causes reduced Recirc MG Set ventilation flow. Verify trigger 5 automatically activates when a Recirc MG Set temperature alarm is received. This adjusts the ventilation flow so temperatures remain below levels requiring speed to be reduced
. After the Team has successfully transferred to 2B Recirc MG Set Vent Fan
, activate trigger 5. This deletes the reduced Recirc MG Set ventilation flow malfunction.
Role Play:
EO to check Recirc MG Set ventilation: Wait 2 min, and then report that "2A Recirc MG vent fan is making a lot of noise and is severely vibrating".
EO to check operation of 2B Recirc MG vent fan: Wait 2 min, and then report that "2B Recirc MG vent fan is operating normally".
ATC Acknowledges and announces alarm s as they are received
- 902-4 F-5 , 2A/B Recirc M
-G Exh Air Temp Hi
. 902-4 E-4 , 2A Recirc M
-G Temp Hi. 902-4 E-9, 2 B Recirc M-G Temp Hi. 902-4 B-9, 2A/B Recirc M
-G M tr/G en Temp H i Sends operator to check status of the Recirc MG ventilation system. Starts 2B Recirc MG vent fan IAW DAN 902
-4 F-5. Secures 2A Recirc MG vent fan
. Sends operator to check operation of the 2B Recirc MG vent fan.
CRS Directs swapping Recirc MG vent fan s. TEAM May reference DOA 5750
-01, Ventilation System Failure.
BOP Assists as directed.
Event 3 Completion Criteria:
Swapped to 2B Recirc MG vent fan
, AND/OR, At the direction of the Lead Examiner.
ILT-N-2 Pa ge 11 of 29 Rev. 00 (04/12)
Event Four - HPCI Inoperable Due to Failure of Turning Gear to Engage Trigger Position Crew Actions or Behavior ROLE PLAY: At the discretion of the Lead examiner, as the Shift Manager, direct the CRS to "place U2 HPCI on the turning gear per DOP 2300
-02 step G.2
. Engineering and an extra EO are standing by in the U2 HPCI room".
CRS Directs BOP to place U2 HPCI on the turning gear per DOP 2300
-0 2, HPCI System Turning Gear Operation, step G.2. BO P Performs DOP 2300-02, HPCI System Turning Gear Operation, step G.2.
Verifies the TURNING GEAR control switch is in NORMAL.
Start s the EMERG OIL PP. Reset s the TURNING GEAR with the TURNING GEAR RESET pushbutton.
Place s the TURNING GEAR Control Switch to start. Observes that the TURNING GEAR ENGAGE light is NOT illuminated, THEN turn s the TURNING GEAR control switch to ENGAGE.
Observes that the Turning Gear Motor automatically stopped after 5 seconds.
May notify the CRS and request concurrence with repeating the steps to engage the turning gear.
Repeats the necessary above steps up to 3 times to attempt to engage the turning gear.. BOP Notifies the CRS that the U2 HPCI turning gear did not engage and DOP 2300
-02 directs proceeding to step G.4
. CRS May direct BOP to place U2 HPCI on the turning gear per DOP 2300
-0 2, HPCI System Turning Gear Operation, step G.4
- OR , May declare HPCI inoperable at this point.
BOP Notifies the CRS that the U2 HPCI turning gear still did not engage and DOP 2300
-02 has a Caution which states the HPCI System must be declared inoperable if the Turning Gear can NOT be engaged from the Control Room.
ROLE PLAY: Respond as Engineering / EO in the U2 HPCI room about turning gear sta tus: Report that "The U2 HPCI turning gear motor ran for about 5 seconds, but the turning gear did not engage. The U2 HPCI turning gear appears to be binding and not engaging
". CRS Declare s HPCI inoperable.
References Technical Specifications and determines:
TS 3.5.1 Action G applies. Verify Isolation Condenser is OPERABLE immediately AND restore HPCI System to OPERABLE status within 14 days.
ATC Monitors panels and assists as directed.
ILT-N-2 Pa ge 12 of 29 Rev. 00 (04/12)
Event Four - HPCI Inoperable Due to Failure of Turning Gear to Engage Trigger Position Crew Actions or Behavior Event 4 Completion Criteria:
HPCI declared inoperable
, Tech Specs addressed, AND/OR, At the direction of the Lead Examiner.
ILT-N-2 Pa ge 13 of 29 Rev. 00 (04/12)
Event Five - Drywell Equipment Drain Sump Alarm Failure Trigger Position Crew Actions or Behavior NOTE: To ensure the ATC Operator performs these actions
, call the Control Room as the WEC supervisor requesting the BOP report back which Service Water pumps are operating.
NOTE: This event simulates failure of the alarm circuit; actual sump level is below the alarm setpoint. Therefore the sump pumps will not automatically start when the AO 2-2001-5 AND AO 2-2001-6, DW EQUIP DRN ISOL VLV(s), are opened
. The sump pumping is intended to result in about a 3 gpm leak rate calculation.
7 SIMULATOR OPERATOR / ROLE PLAY:
At the discretion of the Lead Examiner, activate trigger 7, which forces up alarm 902
-4 B-17, Drywell Equip Sump Lvl Hi. ROLE PLAY:
EO to check Drywell CAM:
Wait 2 min, and then report that "the Drywell CAM reading is unchanged".
NOTE / ROLE PLAY:
When the ATC opens AO 2-2001-5 AND AO 2-2001-6, DW EQUIP DRN ISOL VLV(s), the recorder 2
-2040-2, D/W EQUIPMENT DRAIN SUMP FLOW, does not reset to approximately zero as expected.
It does reset when a pump is started.
FLOOR INSTRUCTOR ROLE PLAY:
When AO 2-2001-5 AND AO 2-2001-6, DW EQUIP DRN ISOL VLV(s), are open, cue the ATC that recorder 2
-2040-2, D/W EQUIPMENT DRAIN SUMP FLOW , reset to zero
".
FLOOR INSTRUCTOR ROLE PLAY:
As U3 CRS, inform the U2 CRS that "I will perform the leakage rate calculation".
Cue the Team that it has been 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> since the Drywell Equipment Sump was last pumped. ATC Announces alarm:
902-4 B-17, Drywell Equip Sump Lvl Hi.
CRS Directs pumping the Drywell Equipment Drain Sump per DOP 2000
-24, Drywell Sump Operation.
ILT-N-2 Pa ge 14 of 29 Rev. 00 (04/12)
Event Five - Drywell Equipment Drain Sump Alarm Failure Trigger Position Crew Actions or Behavior ATC Pumps the Drywell Equipment Drain Sump per DOP 2000
-24, Drywell Sump Operation:
Verifies ONE of the following conditions exists: o The Drywell CAM indicates normal activity with no unexplained changes
. o Obtain s an acceptable drywell air sample
. o Verifies reactor water level, drywell pressure, and main steam line radiation monitors are within normal limits with NO unexplained changes. Verifies open AO 2-2001-3, DW EQUIP SUMP DISCH VLV.
-2001-6, DW EQUIP DRN ISOL VLV(s)
. Verify recorder 2
-2040-2, D/W EQUIPMENT DRAIN SUMP FLOW:
o Indicates "RCD" on digital display.
o Integrator value resets to approximately zer
. ATC WHEN pumping is complete OR level has reach the desired point, THEN
- Verify EQUIP DRN PP stops.
Close AO 2
-2001-5 AND AO 2
-2001-6, DW EQUIP DRN ISOL VLV(s).
Place s the 2A OR 2B EQUIP DRN PP control switch in NORMAL-AFTER-STOP. Reset the annunciators associated with the Drywell Equipment and Drywell Floor drain valves. BOP Assists as directed.
Event 5 Completion Criteria:
Drywell Equipment Sump pumped and leak rate determined to be unchanged.
AND/OR, At the direction of the Lead Examiner.
ILT-N-2 Pa ge 15 of 29 Rev. 00 (04/12)
Event Six - Spurious ERV Opening Trigger Position Crew Actions or Behavior 8 9 SIMULATOR OPERATOR / ROLE PLAY:
At the discretion of the Lead Examiner, activate trigger 8, which causes "E" ERV to spuriously open due to an electrical failure.
As the EO sent to pull control power fuses for the "E" ERV (wait 3 min) activate trigger 9 , which removes control power fuses for the "E" ERV, then call the control room on the phone and report: "I have pulled the "E" ERV fuses". As the QNE called to evaluate core parameters (wait 2 min) then report: "core parameters are within limits".
BOP Determines/announces that "E" ERV is open. Performs DOA 0250
-01, Relief Valve Failure, immediate actions:
Places the "E" ERV control switch to OFF.
ATC Verifies FWLCS has stabilized level.
CRS Enters DOA 0250
-01, Relief Valve Failure, and directs actions.
BOP Determines that "E" ERV is still open and performs subsequent actions of DOA 0250
-01: Cycles "E" ERV control switch to MAN and OFF twice.
Cycles the ADS INHIBIT switch from NORMAL to INHIBIT to NORMAL several times.
Directs "E" ERV control power fuses pulled.
If torus temp is greater than circulating water inlet temperature, starts torus cooling as directed. If > 95° and DEOP 02 00-01, Primary Containment Control, entry is required.
Monitors Turbine Bypass Valve Operation.
May check hydrogen addition operation.
May monitor torus temp per DOS 1600
-20, Suppression Pool Temp Monitoring.
Resets the acoustic monitor.
CRS May direct scram preparatory actions per DGP 02
-03, Reactor Scram.
May enter DEOP 0200
-01, Primary Containment Control, for high Torus level.
If Torus temperature reaches 95F, then enters DEOP 0200
-1, Primary Containment Control, and performs/directs:
Monitoring of PC/P Initiation of torus cooling. (May already be started per DOA 0250
-01) Monitoring of Torus level.
Verifying initiation of drywell and torus H 2/O 2 monitors. ATC Performs scram preparatory actions per DGP 02
-03, Reactor Scram, as directed.
o Scram preparatory conditions already exist.
BOP Determines/announces that E ERV closed when fuses pulled.
ILT-N-2 Pa ge 16 of 29 Rev. 00 (04/12)
Event Six - Spurious ERV Opening Trigger Position Crew Actions or Behavior CRS Declares "E" ERV inoperable.
Determines following Technical Specifications apply:
3.0.3, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> place the unit, in:
MODE 3 within 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br />; and MODE 4 within 37 hours4.282407e-4 days <br />0.0103 hours <br />6.117725e-5 weeks <br />1.40785e-5 months <br />.
3.4.3, Safety and Relief Valves, Condition A.1: Restore the relief valve to OPERABLE status within 14 days.
3.5.1, ECCS Operating, Condition K.1: With HPCI System and one or more ADS valves inoperable , enter LCO 3.0.3 immediately
. 3.6.1.8, Suppression Chamber
-to-Drywell Vacuum Breaker, SR 3.6.1.8.2: Perform a functional test of each required vacuum breaker within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
CRS Directs performance of Suppression Chamber
-to-Drywell Vacuum Breaker testing.
TEAM May enter and perform DGA
-07, Unpredicted Reactivity Addition Event 6 Completion Criteria:
The failed ERV is closed, Technical Specification determination completed, AND/OR, At the direction of the Lead Examiner.
ILT-N-2 Pa ge 17 of 29 Rev. 00 (04/12)
Event Seven
- Instrument Air Leak / Reactor Scram Trigger Position Crew Actions or Behavior 1 0 11 SIMULATOR OPERATOR:
At the direction of the Lead Examiner, activate trigger 1 0 to initiate a large Instrument Air leak. Verify trigger 11 automatically activates when IA pressure drops <40.0 psig. This binds the 'A' MSIVs.
ROLE PLAY:
EO sent to check air compressor and air dryer operation, wait 3 min. then report, "The air compressors are all running loaded and there are no problems at the air dryers."
Personnel sent to inspect IA system for rupture, acknowledge the order.
If asked, U1 air system is not is service If directed to perform other actions as plant personnel, acknowledge the request. If asked later for progress, report that you are on the way to perform the task.
BOP Announces alarm 923-1 F-4, U2 INST AIR PRESS LOW.
Verifies U2 SA to IA Auto Crosstie Valve opens at 85 psig CRS Announces entry into DOA 4700
-01, Instrument Air System Failure, and directs team actions. Briefs team to be prepared to manually scram the reactor and close the outboard MSIVs IF Instrument Air pressure drops to 55 psig.
Announces entry into DOA 0600
-01, Transient Level Control, and directs concurrent performance with DOA 4700
-01, IA System Failure.
BOP Directs EO(s) to check air compressors and air dryers for proper operati on Directs in
-plant personnel to inspect U2 IA system for proper lineup and leaks.
May direct EO to cross
-connect U2 to U3 IA Systems per DOP 4700
-03, U2/3 IA Cross-Connect Operation.
(Requires Shift Manager's permission)
May direct EO to cross
-connect U2 to U3 SA Systems CRS May direct scram preparations per DGP 02
-03, Reactor Scram.
ATC Performs scram preparations per DGP 02
-03, Reactor Scram, as directed:
o Reduces power with Recirc flow to 56 Mlbm/hr core flow o Starts the turbine motor suction pump AND turning gear oil pump.
o Trips H2 addition.
CRS When IA pressure drops to 55 psig, directs team to:
Scram the reactor per DGP 02
-03, Reactor Scram.
Close the outboard MSIVs.
ILT-N-2 Pa ge 18 of 29 Rev. 00 (04/12)
Event Seven
- Instrument Air Leak / Reactor Scram Trigger Position Crew Actions or Behavior ATC Performs the following actions per DGP 02
-03, Reactor Scram, and DEOP 0 100, RPV Control, as directed:
Places Mode Switch to Shutdown and depresses the Scram pushbuttons.
Determines all rods are inserted.
Maintains RPV level as directed by CRS. Inserts SRMs and IRMs.
CRS Enters DEOP 0100, RPV Control, Directs actions of DEO P 0 100. Directs actions of DGP 02
-03. Verification of all isolations, ECCS and EDG starts.
Holding RPV/L +8 to +48 inches.
Maintaining RPV/P <1060 psig using the Isolation Condenser.
BOP Closes the outboard MSIVs.
If directed, maintains RPV/P <1060 psig using the Iso Cond to control RPV/P (may use Hardcard)
Performs Reactor Scram actions per his Hardcard.
Event 7 Completion Criteria:
Team has performed a reactor scram and stabilized the plant, AND/OR, At the direction of the Lead Examiner.
ILT-N-2 Pa ge 19 of 29 Rev. 00 (04/12)
Event Eight - FEF / Steam Leak In HPCI Room / Secondary Containment High Radiation / Emergency Depressurization Trigger Position Crew Actions or Behavior 1 2 Simulator Operator:
At the discretion of the Floor Instructor / Lead Evaluator, activate trigger 1 2. This causes:
A FEF. A HPCI Room steam line break.
When trigger 12 is activated, immediately RUN CAEP file ILT-N-2 Rad.cae. 13 Simulator Operator / Role Play:
EO to reinstall 'E' ERV fuses: wait 2 min, activate trigger 13, and then report "'E' ERV fuses are installed".
Role Play:
EO sent to HPCI: wait 2 min, then report "the HPCI room is filled with steam. I left the area". Several minutes after above report, report as one of the EOs sent to the Rx Bldg "there is steam coming from the West LPCI Corner Room stairway; I am leaving the Rx Bldg". For any subsequent requests to enter the Unit 2 Rx Bldg, report "I cannot enter the Rx Bldg due to the presence of steam.
EO to Panel 902
-39 in AEER: wait 3 min, call on the phone and report "there is an acrid odor coming from the 902
-39 panel, but there is no indication of a fire".. Role Play:
RP to take local RX Bldg radiation readings: Report "I cannot enter the Unit 2 RX Bldg due to the steam leak. I am able to get radiation levels through the doorways. The highest reading is on the 1st floor through the door from Unit 3. The reading is (provide the value from the W. CRD area ARM on the Monitor screen)".
Once the W CRD area ARM is full upscale (100 mr/hr), for further reports provide EITHER: The W. CRD ARM value; OR, Value provided by the Floor Instructor.
Note: Use time compression
, if desired
, and report that radiation levels are 2600 mr/hr. Floor Instructor / Lead Evaluator:
If desired once the W. CRD area ARM is full scale, provide the Communicator with field radiation levels. A W.CRD area radiation level of >2500 mr/hr will provide the crew a second area above Max Safe.
BOP Announces alarm 902
-3 A-1 for Rx Bldg Rad Hi.
Obtains DEOP related ARM readings and reports values to Unit Supervisor.
ILT-N-2 Pa ge 20 of 29 Rev. 00 (04/12)
Event Eight - FEF / Steam Leak In HPCI Room / Secondary Containment High Radiation / Emergency Depressurization Trigger Position Crew Actions or Behavior CRS Enters DEOP 0300
-01, Secondary Containment Control, due to Vent Rad above 4 mr/hr. Verifies Reactor Building Vent Isolation and SBGT start.
Enters DGA
-16, Coolant High Activity/Fuel Element Failure and directs:
Directs Manual Actions for 15 min. Off
-Gas Timer.
Within 40 minutes, isolate Main Control Room Ventilation AND start the air filtration unit per DOA 5750
-04, Smoke, Noxious Fumes or Airborne Contaminants in the Control Room.
BOP Announces alarm 902
-3 G-2 for Area High Temperature. Checks back panel and determines HPCI Room temperatures are rising. Reports values to Unit Supervisor.
CRS When Rx Bldg Area High Temp alarm is received for the HPCI area, re-enters DEOP 0300-01, Secondary Containment Control.
Directs operator to isolate the HPCI system.
Determines steam leak cannot be isolated.
BOP When directed, attempts to close HPCI MO 2301
-4 & 5 to isolate the HPCI system. Reports the valves will not close. May send operator to check its breaker.
CRS Reenters DEOP 0300
-01, Secondary Containment Control, due to Rx Bldg Radiation above Max Normal. (HPCI Room >150 mr/hr)
ATC / BOP Performs DGA 16, Coolant High Activity/Fuel Element Failure as directed:
Performs Manual Actions for 15 min. Off
-Gas Timer.
Isolates Main Control Room Ventilation AND starts the air filtration unit per DOA 5750-04, Smoke, Noxious Fumes or Airborne Contaminants in the Control Room.
ATC / BOP Announces Drywell, Main Steam Line, SPING Radiation alarms.
CRS When two Rx Bldg Radiation levels exceed Max Safe (>2500 mr/hr), enters DEOP 0400-02, Emergency Depressurization, and performs / directs:
If Drywell Pressure above 2 psig, preventing Core Spray and LPCI injection not needed for core cooling Initiating IC to maximum flow Verifying Torus level above 6' Opening all ADSVs (SC-1.2) ('E' ERV has its fuses pulled)
May direct reinstalling 'E' ERV fuses.
ILT-N-2 Pa ge 21 of 29 Rev. 00 (04/12)
Event Eight - FEF / Steam Leak In HPCI Room / Secondary Containment High Radiation / Emergency Depressurization Trigger Position Crew Actions or Behavior BOP Performs DEOP 0400
-02, Emergency Depressurization, as directed:
Prevents Core Spray and LPCI injection not needed for core cooling Initiates IC to maximum flow Verifies Torus level above 6' Opens all available ADSVs (SC-1.2) ('E' ERV has its fuses pulled)
Event 7 / Scenario Completion Criteria:
Emergency Depressurization in Progress, RPV stabilized, AND/OR, At the direction of the Lead Examiner.
ILT-N-2 Pa ge 22 of 29 Rev. 00 (04/12)
Critical Tasks
- With a loss of instrument air in progress, when instrument air header pressure drops to 55 psig then INITIATE a manual reactor scram AND CLOSE the outboard MSIVs.
(SC 1.2) With a primary system discharging into the secondary containment and area radiation/temperature/water levels exceed maximum safe operating levels in more than one area, INITIATE emergency depressurization. (May anticipate Blowdown)
ILT-N-2 Pa ge 23 of 29 Rev. 00 (04/12)
REFERENCES PROCEDURE TITLE DAN 902-3 A-1 Rx Bldg Rad Hi DAN 902-3 G-2 Area High Temperature DAN 902-4 B-9 2A/B Recirc M
-G M tr/G en Temp H i DAN 902-4 B-17 Drywell Equip Sump Lvl Hi DAN 902-4 B-4(9) 2A(B) Recirc M-G Temp Hi DAN 923-1 F-4 U2 Inst Air Press Low DEOP 0100 Reactor Control DEOP 0200-01 Primary Containment Control DEOP 0300-01 Secondary Containment Control DEOP 0400-02 Emergency Depressurization DEOP 100 RPV Control DGA-16 Coolant High Activity/Fuel Element Failure DGA-07 Unpredicted Reactivity Addition DGP 02-03 Reactor Scram DOA 0250-01 Relief Valve Failur e DOA 0600-01 Transient Level Control DOA 4700-01 Instrument Air System Failure DOA 5750-01 Ventilation System Failure DOA 5750-04 Smoke, Noxious Fumes or Airborne Contaminants in the Control Room DOP 0600-06 Feedwater Regulating Valve (FWRV) Operatio n DOP 2000-24 Drywell Sump Operation DOP 2300-0 2 HPCI System Turning Gear Operation DOP 4700-03 U2/3 IA Cross
-Connect Operation DOP 5750-02 Reactor Building Ventilation DOP 6700-20 480V Circuit Breaker Trip DOS 1600-20 Suppression Pool Temp Monitorin g TS 3.4.3 Safety and Relief Valves TS 3.5.1 ECCS Operating TS 3.6.1.8 Suppression Chamber
-to-Drywell Vacuum Breaker
ILT-N-2 Pa ge 24 of 29 Rev. 00 (04/12)
EXAM ILT-N-1 QUANTITATIVE ATTRIBUTES 7 Total malfunctions (5
-8) 1 Malfunctions after EOP entry (1
-2) 2 Abnormal events (2
-4) 2 Major transients (1
-2) 2 EOPs entered/requiring substantive actions (1
-2) 1 EOP contingencies requiring substantive actions (0
-2) 2 Critical tasks (2
-3)
ILT-N-2 Pa ge 25 of 29 Rev. 00 (04/12)
Computer Aided Exercise Programs
- ILT-N-2.cae # For ILT Class 11
-1 NRC Exam
- Written by MP
- Rev 00 # Date 05/12
- INITIAL CONDITIONS
- Sets APRM Master Gain pot to 1.0 irf niagain 1.0
- E ERV bind malfunction is set to 25%
imf ads3ebn 25.0
- Prevents HPCI turbine turning gear from engaging from the control room.
imf hptgfail ior hpdngtgm 1
set hpzngtgm = falsel2
- Closes 3C to 2B IA X
-tie. irf vp6 0.0l2
- Binds HPCI 4 valve @ 90%.
- Overrides HPCI 5 valve control switch to prevent closing.
imf hp4vlbn 90.0l2
ior hpdcl5 1l2
irf hpgp4rly liftedl4
- EVENT TRIGGERS
- Event Trigger 1 sets gain for all 6 APRMs.
trgset 1 "0"l4
trg 1 "irf niagainf true"l4
- Event Trigger 2 Forces up alarm 902
-6 H-3, FW Control System Panel Trouble.
trgset 2 "0"l4 imf ser1274 (2) onl6
- Event Trigger 3 Returns alarm 902
-6 H-3, FW Control System Panel Trouble, to NORMAL.
trgset 3 "0"l6
trg 3 "imf ser1274 normal"l6
- Event Trigger 4 Inserts Recirc MG Set 2A/B Vent Fan Filter Clogged.
Trgset 4 "0"l6
imf rrmfaexh (4)l8
- Event Trigger 5 Activates when a Recirc MG Set high temp alarm is received.
- Slows the temperature rise so load drop is not required.
Trgset 5 "sezpoint(341) .or. sezpoint(388)"l8 trg 5 "set rrkwvfan = 20.0"l8
- Event Trigger 6 Deletes Recirc MG Set 2A/B Vent Fan Filter Clogged.
Trgset 6 "0"l8 trg 6 "dmf rrmfaexh"l10 ILT-N-2 Pa ge 26 of 29 Rev. 00 (04/12)
- Event Trigger 7 Forces up alarm 902
-4 B-17, Drywell Equip Sump Lvl Hi.
- Sets mass in DWEDS to simulate a 3 gpm leak rate over 2 hrs.
trgset 7 "0"l10
trg 7 "set pcmdwes = 4200.0"l10
imf ser0512 (7) onl10
- Event trigger 8 causes the E ERV setpoint to drift to fail it open.
Trgset 8 "0"l12 imf ads3esd (8) 75.0l12
- Event Trigger 9 Deletes E ERV binding malfunction so valve will close and removes fuses for the E ERV.
Trgset 9 "0"l12
trg 9 "dmf ads3ebn"l12 irf adsrfe (9) pulledl1 4 # Event trigger 10 Inserts a large IA leak.
trgset 10 "0"l14
imf np2 (10) 87.0 10:00 40.0l14
- Event Trigger 11 Acivates when U2 IA pressure <40.0 psig".
- Binds 1A & 2A MSIVs.
trgset 11 "ppf285 .lt. 40.0"l14 imf i12 (11)l16 imf i16 (11)l16
- Event Trigger 12 Initiates a HPCI Room steam line break of 5%.
trgset 12 "0"l16
imf hprmbrkp (12) 100.0 15:00 5.0l16
imf radffd (12) 4.0 15:00 1.0l18
- Event Trigger 13 Installs E ERV fuses.
Trgset 13 "0"l18 trg 13 "irf adsrfe in"l18
- END
- ILT-N-2 Rad.cae # For ILT Class 1 1-1 NRC Exam
- Written by MP
- Rev 00 # Date 05/12
set RMARMFAILF(2) = true
ramp RMARMFAILD(2) 5.0 3000.0 8:00
set RMARMFAILF(3) = truel1:00
ramp RMARMFAILD(3) 2.0 1000.0 5:00l1:00
set RMARMFAILF(5) = truel2:00
ramp RMARMFAILD(5) 0.2 100.0 2:00l2:00
- After 2 min, starts a ramp of the REACTOR BUILDING SOUTH ACCESS ARM.
ILT-N-2 Pa ge 27 of 29 Rev. 00 (04/12) set RMARMFAILF(7) = truel2:00
ramp RMARMFAILD(7) 1.0 100.0 2:00l2:00
- END
- ILT-N-2 Clear Rad.cae
- For ILT Class 11
-1 NRC Exam
- Written by MP
- Rev 00
- Date 05/12
- This CAEP Clears the Rad level ramps. # Reseting the IC does not clear them.
- Restarting MST will also clear them.
set RMARMFAILF(2) = false
set RMARMFAILF(3) = false
set RMARMFAILF(5) = false
- Stops ramp of the REACTOR BUILDING SOUTH ACCESS ARM.
set RMARMFAILF(7) = false
- END ILT-N-2 Pa ge 28 of 29 Rev. 00 (04/12)
Unit 2 Risk: GREEN Unit 3 Risk: GREEN Unit 2 is in Mode 1 at 630 MWe, Leading Thermal Limit: MFLCPR @ 0.881 Action limit: 0.980 Equipment Unavailable: None
Protected Equipment: None Unit 3 is in Mode 1 at Full Power Leading Thermal Limit: MAPRAT @ 0.819
Action Limit: 0.980 Equipment Unavailable: None Protected Equipment: None Current Action Statements None LCO Started:
LCO Expires:
TS Cause: Unit 1 Plant Status Today U1 Diesel Oil Storage Tank Transfer House has grating removed. Currently roped off with pump installed to pump to U1 Oil Seperator Pit as required. Outside operator monitor and pump as necessary.
Today Chem Cleaning ventilation status:
HV-1A/EF-1A are secured due to HV
-1A inlet and outlet dampers being shut with fan on, IR# 913157, WO 1239746. HV-1B/EF-1B are secured due to HV
-1B throwing its belts. WO 1156150.
HVA C -1 ON. HV-2 running.
Switchyard Status Today 138 KV Bus 1 Feed To TR 22 Combi Units has low oil in the 'C' phase, ComEd WO #276162 Today HVO: Exercise CAUTION while in the 345 KV Yard due to excavation being performed in the area.
Marv Evans reports holes being dug near manual switch disconnects 345 KV Blue Bus. Plywood will be installed over the holes if access is needed, but be aware there are holes under the plywood.
SSC called from the 345 KV yard reporting that the cable trough covers are removed to prep for upcoming work. Be careful.
ILT-N-2 Pa ge 29 of 29 Rev. 00 (04/12)
Unit 2 Plant Status Today Unit 2 Activities
- Shift 1 Activities ****
- Shift 2 Activities ****
Manager, start 2C Reactor Building Vent Fan and secure 2B Reactor Building Vent Fan per DOP 5750
-02, Reactor Building Ventilation When directed by the Shift Manager, remove 'B' FWRV from service per DOP 0600
-06, step G.11 to support IMD performing DIP 06 00-07. When requested by Engineering, place the HPCI turbine on the turning gear per DOP 2300
-02, step G.2
- Shift 3 Activities ****
Today **** Unit 2 Procedures In
-Progress **** Do Not Delete ****
Dresden Generating Station 11-1 (2012-301) NRC - SCENARIO 03 CRD - CONTROL ROD, DRIFTS OUT CRD - CONTROLLER, INDICATION FAILS UPSCALE CORE SPRAY
- SYSTEM LEAK / LOCALIZED FLOODING FW - COND/BSTR PUMP, TRIPS DUE TO OVERCURRENT MANUAL SCRAM
- LOSS OF ALL FEEDWATER, DUE TO TRIP OF ALL RFPS.
ATWS - ELECTRICAL, ARI UNSUCCESSFUL / TEAM INSERTS RODS BY PULLING SCRAM FUSES.
EXAM MATERIAL
Rev. 00 04/12 Developed By:
Exam Author Date Approved By:
Facility Representative Date ILT-N-3 Page 2 of 25 Rev. 00 (04/12)
Scenario Outlin e Station: Dresden Station Scenario No.:
11-1 (20 12-301) NRC - Scenario 03 Evaluators Operators / crew position
/ ATC / BOP Initial Conditions:
/ CRS Initial Power =
5% Turnover: Startup in Progress. On hold for QNE direction.
Event No. Malf. No. Event Type* Event Description 1 RODK08 D O C / T ATC CRD - Control Rod, Drifts Out 2 RDFCFHI C ATC CRD - Controller, Indication Fails Upscale 3 CSPPBBRK C / T BOP CORE SPRAY
- System Leak / Localized Flooding 4 H21 C ATC FW - Cond/Bstr Pump, Trips Due To Overcurrent 5 H32/H33/H34 M TEAM Manual Scram
- Loss Of All Feedwater, Due To Trip of All RFPs. 6 B12 SER1026 SER1060 AW4 M TEAM ATWS - Electrical, ARI Unsuccessful / Team Inserts Rods By Pulling Scram Fuses.
- (N)ormal, (R)eactivity, (I)nstrument, (C)omponent, (M)ajor, (T)ech Spec
ILT-N-3 Page 3 of 25 Rev. 00 (04/12)
Scenario Objective Evaluate the Team's ability to operate the plant with an electrical ATWS Scenario Summary Initial Conditions:
- 1. Unit is at 5% power. 2. The following equipment is OOS:
- a. None 3. LCOs: a. None
Scenario Sequence A control rod begins to drift out. The NSO must insert the rod to position 00 and it fails to latch when fully inserted. The Team will give it an individual scram signal and reference Tech Spec requirements.
The indicated flow to the CRD Flow Controller fails high. This causes the controller demand to the CRD FCV to fail low. If the team does not recognize the failure quickly and restore CRD cooling flow, the ROD DR I VE TEMP HI alarm comes up. The Team takes manual control of the CRD Flow Controller to restore system parameters to normal. A small, isolable break occurs on the 2B Core Spray pump piping, rendering the pump inoperable
. 2A Condensate/Booster Pump trips with failure of the STBY pump to auto start. Also
, the first pump the Team attempts to start will trip.
The other non
-running pump will start.
2 A RFP trips and when 2 B RFP auto starts, but after a short time, it also trips.
The 2C RFP can be started manually, but it also trips a short time later.
The Team will manually scram the reactor.
An electrical ATWS occurs when the reactor is scrammed. ARI is unsuccessful. The Team inserts control rods by pulling scram fuses, venting the scram air header, and / or driving control rods.
Event One - Control Rod Drift Out A Control Rod will drift out Malfunctions required:
1 Control Rod K-08 drift out Success Path:
Control Rod fully inserted and individual scram signal applied.
The Control Room Supervisor references appropriate Tech Specs and makes correct LCO call.
ILT-N-3 Page 4 of 25 Rev. 00 (04/12)
Event Two
- Indicated Flow to CRD Flow Controller Fails High Indicated flow to the CRD Flow Controller fails high. This causes the controller demand to the CRD FCV to fail low. Malfunctions required:
1 Indicated flow to the CRD Flow Controller fails high Success Path:
The crew takes manual control of the CRD Flow Controller Event Three - Core Spray Leak / Localized Flooding A leak occurs on the 2B Core Spray pump casing.
Malfunctions Required: 1 2B CS pump casing weld failure.
Success Path: Isolates the leak per DOA 0040
-02, Localized Flooding in the Plant.
References Tech. Specs.
Event Four - Condensate/Booster Pump Trip with Failure of STBY to Auto Start 2A Condensate/Booster Pump trips with failure of the STBY pump to auto start. Also the first pump the Team attempts to start will trip.
Malfunctions required: 1 (Condensate/Booster pump trip with failure of STBY to auto start
) Success Path:
Starts a Condensate/Booster p u mp. Event Five
- Loss of Feedwater All RFPs trip resulting in insufficient Feedwater flow.
Malfunctions required:
1 Loss of Feedwater
Success Path:
The Team performs a manual scram
ILT-N-3 Page 5 of 25 Rev. 00 (04/12)
Event Six
- Electrical ATWS / ARI Unsuccessful
. An electrical ATWS occurs when the reactor is scrammed. ARI is unsuccessful.
Malfunctions required:
2 Electrical ATWS
Success Path:
The Team inserts control rods by pulling scram fuses, venting the scram air header, and / or driving control rods ILT-N-3 Page 6 of 25 Rev. 00 (04/12)
PRE-SCENARIO ACTIVITIES 1 If applicable, conduct pre
-scenario activities in accordance with TQ
- JA-150-08, SIMULATOR EXAMINATION BRIEFING. a. Inform the crew that the QNE (Floor Instructor) is present in the Control Room.
- b. Direct the crew to perform their briefs prior to entering the simulator.
- c. Provide the crew with a copy of applicable procedure(s) marked up and completed through the appropriate steps: 1) DGP 01-01, Unit Startup, marked up for Reactor at 5% power.
- 2) DOP 0400-01, Reactor Manual Control System Operation.
- 3) DOP 0400-02, Rod Worth Minimizer.
- 4) DOP 5600-06, Turbine Startup.
- 5) CRSP 2 Simulator Setup (the following steps can be done in any logical order)
- a. Initialize simulator in an IC with ~5% power (IC 149 on the jump drive can be used) and perform the following before continuing below:
- 1) Verify control rod sequence XI.1.0 with step 20 fully withdrawn
. 2) Verify Reactor power ~5%.
3 Verify the following simulator conditions:
- a. Verify Torus to Drywell DP within limits (vent Torus as needed).
- b. Verify Torus level >
-3.5 in. (Variable PPC232) if necessary, water can be quickly added by opening and closing valve 1402
-2A on Instructor Station drawing CS1.
- e. Verify Zinc Injection label in place for lined up to 2A RFP.
- f. Verify 2 A and 2C Condensate pumps running.
- g. Verify 2 B and 2D Condensate pumps OFF.
- h. Verify 2D Condensate pump in STBY.
- i. Verify Cond/Booster min flow to 75%. j. Ensure running Condensate pump amps within limits.
- k. Cut in/out Cond Demins as needed, to maintain DP within limits.
- m. Advance the chart recorders.
4 Place the following equipment out of service:
- a. None NOTE: Perform the above setup prior to running the setup CAEP file.
5 Run the initial setup CAEP file: ILT
-N-3.ca e ILT-N-3 Page 7 of 25 Rev. 00 (04/12) 6 Complete the Simulator Setup Checklist.
Symbols are used throughout the text to identify specific items as indicated below:
Critical Tasks Time Critical Tasks Required Actions Optional Actions
ILT-N-3 Page 8 of 25 Rev. 00 (04/12)
Event One - Control Rod Drift Out Trigger Position Crew Actions or Behavior 2 3 Simulator Operator:
At the discretion of the Lead examiner, activate trigger 2, which causes Control Rod K-08 to drift out.
Verify trigger 3 automatically activates when EITHER control rod K-08 passes position 10 so it settles at position 12; OR, the scram toggle switch for CRD K-08 is placed to the UP position. This deletes control rod K
-08 drift out malfunction so it stops adjacent to control rods already at position 12 and it does not drift out later when the reactor is scrammed.
Role Play:
EO to check K
-08 accumulator: Wait 2 min, then report "I see nothing abnormal at K
-08 accumulator.
" WEC/EO to disarm K-08: acknowledge the request. It is not intended to complete the request. QNE to evaluate core limits: Acknowledge the request. Wait 2 min. and report, "core parameters are within limits".
-08's 2-0305-102, WITHDRAW VLV: Wait 2 min. and report, "
CRD K-08's 2-0305-102 is closed".
ATC Notices and announces that Control Rod K-08 is drifting out.
Performs actions of DOA 0300
-05, Inoperable Or Failed Control Rod Drives as directed.
Immediate:
Bypasses the Rod Worth Minimizer.
Inserts the CRD to 00 using Emergency Rod In.
Subsequent:
Due to the CRD failing to remain at the FULL IN OR OVERTRAVEL IN position, continuously applies an emergency insert signal using EMERG ROD IN on RONOR switch.
CRS Enters DOA 0300
-05, Inoperable or Failed Control Rod Drives, and directs actions. May r efer to Tech. Spec 3.3.2.1 Condition C.
BOP At back panel 902(3)
-16, places the scram toggle switch for CRD K
-08 to the UP position. ATC Releases RONOR switch.
Announces that procedure directs entering DOA 0300
-12, Mispositioned Control Rod. Discontinues ALL non
-emergency control rod motion and notifies CRS and QNE to evaluate core parameters.
-08's 2-0305-102, WITHDRAW VLV, to prevent CRD discharge volume from filling.
ILT-N-3 Page 9 of 25 Rev. 00 (04/12)
Event One - Control Rod Drift Out Trigger Position Crew Actions or Behavior CRS References TS 3.1.3, Condition C, and determines the following actions are required: C.1 Fully insert inoperable control rod within 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />. (DOA 0300
-05, Inoperable or Failed Control Rod Drives, directs inserting the rod)
C.2 Disarm the associated CRD within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
Directs disarming rod K-08. CRS Enters DOA 0300
-12, Mispositioned Control Rod
. CRS Directs taking rod K-08 OOS on the RWM.
ATC Takes rod K-08 OOS on the RWM.
TEAM May enter DGA 07, Unpredicted Reactivity Addition.
Event 1 Completion Criteria:
When Control Rod K-08 Has Been Inserted To Position 00, AND Tech Specs Have Been Addressed, AND/OR, At the direction of the Lead Examiner.
ILT-N-3 Page 10 of 25 Rev. 00 (04/12)
Event Two
- Indicated Flow to CRD Flow Controller Fails High Trigger Position Crew Actions or Behavior 4 Simulator Operator:
At the discretion of the Lead Examiner, activate trigger 4, which causes the indicated flow to the CRD Flow Controller to fail high. This causes the controller demand to the CRD FCV to fail low.
NOTE: If the team does not recognize the failure quickly and restore CRD cooling flow, the ROD DRIVE HI TEMP alarm comes up after ~ 5 min.
5 6 Simulator Operator:
If CRD Temperature variable rdgtemp(21) reaches 250.0 deg. F, verify the following automatic triggers:
Trigger 5: automatically activates when variable rdgtemp(21) is >250.0 deg. F. Forces up alarm 902
-5 F-3, ROD DRIVE HI TEMP.
Trigger 6: automatically activates alarm 902
-5 F-3 is up and variable rdgtemp(21) is <245.0 deg. F. Returns alarm 902
-5 F-3, ROD DRIVE HI TEMP, TO NORMAL. ATC From panel monitoring or alarm 902
-5 F-3, ROD DRIVE HI TEMP, notices and announces loss of CRD system flo
- w. Diagnoses failure of the CRD Flow Controller.
Performs DOA 0300
-01, Control Rod Drive System Failure, actions as directed by the CRS. Restores CRD system flows and pressures to normal.
Places CRD Flow Controller in manual and adjusting as needed.
BOP May obtain CRD temperatures on the back panel.
CRS Directs entering and performing actions of DOA 0300
-01, Control Rod Drive System Failure. Notifies Shift Manager and IMD of CRD Flow Controller failure.
Enters TRM 3.3.h for CRD FCV closed causing loss of RVWLIS. Role Play; EO to check CRD FCV operation: (wait 2 min)
Report, "the CRD FCV appears to be operating normally and is at position is: (Use position displayed on Instructor Station drawing RD2; report as percent)".
EO to check CRD system flow locally (FI 2
-302-56); (wait 1 min)
Report "CRD system flow indicates >100 gpm (pegged high)".
EO to check drive water flow locally (FI 2
-302-64): (wait 1 min)
Report, "CRD drive water flow indicates (same as control room meter)".
EO to check cooling water flow locally (FI 2
-302-65): (wait 1 min)
Report, "CRD cooling water flow indicates (same as control room meter)".
EO to check CRD pumps locally: (wait 1 min)
Report, "CRD Pumps appear to be operating normally".
Respond as groups notified.
ILT-N-3 Page 11 of 25 Rev. 00 (04/12)
Event Two
- Indicated Flow to CRD Flow Controller Fails High Trigger Position Crew Actions or Behavior Event 2 Completion Criteria:
Team has taken manual control of the CRD Flow Controller, AND/OR, At the direction of the Lead Examiner.
ILT-N-3 Page 12 of 25 Rev. 00 (04/12)
Event Three - Core Spray Leak / Localized Flooding Trigger Position Crew Actions or Behavior NOTE: Torus level drops slowly, so the Tech Spec Torus level low limit is not expected to be reached.
7 Simulator Operator
- Activate trigger 7 to start a 2B Core Spray pump casing to piping weld rupture at 1%. It takes about 1 minute for the sump alarm to come in.
Role Play: EO sent to the west corner room, wait approx. 3 min. then report:
"There is a leak on the casing weld of 2B Core Spray pump. It is not spraying on other equipment. All of the water is going to the sump and both sump pumps are operating properly.
Water in the sump is about 2 ft. from the top and steady."
8 Simulator Operator / Role Play
- If directed to isolate keep fill to 2B CS, initiate trigger 8 to close 2
-1402-36B, ECCS Keep Fill to 2B Core Spray system. Then report "The keep fill supply valve(s) 2-1402-36B(37B) are closed."
Role Play: EO 2B CS: If the suction valve is NOT full closed, then if asked, "there is still water spraying from the casing weld".
IF MO 2-1402-3B, PP Suct Vlv is closed, then report: "The leak is almost stopped and t he sump level is dropping."
EO to shut 2
-1402-8B, PP disch vlv: wait 5 min. then report, "the 2
-1402-8B is closed".
Maintenance estimate to repair 2B Core Spray pump: Report it will take 3 days to repair the crack.
BOP Receives and announces alarm 902-4 D-19, LPCI/CS West Sump Lvl Hi.
Dispatches an in
-plant operator to the west corner room to check for leaks and/or verify proper sump operation.
CRS Enters DOA 0040
-02, Localized Flooding in the Plant, and directs team response.
BOP Performs DOA 0040
-02, Localized Flooding in the Plant:
Makes PA announcement.
Monitor plant equipment and parameters in the west corner room.
CRS Refers to P&ID M27, Diagram of Core Spray Piping, determines leak isolation points, and directs: Placing 2B Core Spray PP in PTL. MO 2-1402-3B, PP Suct Vlv, closed, and 2-1402-36B(37B) Keep Fill Supply valve(s), closed. (Not required to stop leak)
ILT-N-3 Page 13 of 25 Rev. 00 (04/12)
Event Three - Core Spray Leak / Localized Flooding Trigger Position Crew Actions or Behavior BOP Isolates leak as follows:
Places 2B Core Spray PP in PTL.
Closes MO 2-1402-3B, PP Suct Vlv.
May direct 2
-1402-36B(37B), Keep Fill Supply valve(s), closed.
CRS May refer to DEOP 0300
-01, Secondary Containment Control, due to water on the floor going to the sump, and determines entry condition is not met.
BOP If receives annunciator 902
-4 C-23, Torus Narrow Range Wtr Lvl Lo:
Checks Torus level on panel 902
-3. Refers to DOP 1600
-02, Torus Water Control, to restore Torus level.
CRS Enters DEOP 0200
-01, Primary Containment Control, if Torus level drops to
-4.5" and directs team actions. (Not expected as level drops slowly)
-02, Torus Water Level Control, and directs restoring Torus water level. BOP Restores Torus level per DOP 1600
-02, Torus Water Level Control, as directed:
Verifies MO 2301
-35, -36 closed.
Verifies MO 2301
-6 open. Verifies CST level adequat
- e. Opens MO 2301
-14. Closes MO 2301
-14 when Torus level rises to
-2.5 in. to
-4.0 in. CRS Declares 2B Core Spray PP inoperable
. References Tech Specs: TS 3.5.1, Condition B: Return the CS subsystem to operable within 7 days or must be in Mode 3 within 12 hrs and Mode 4 within 36 hrs.
If torus level drops to -4.5", enters TS 3.6.2.2 Condition A. Restore suppression pool water level to within limits within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.
Enters TRM 3.4.a Structural Integrity Condition B.
Event 3 Completion Criteria:
The localized flooding is stopped, and Tech Specs and TRM are referenced, OR, At the discretion of the Floor Instructor/Lead Evaluator.
ILT-N-3 Page 14 of 25 Rev. 00 (04/12)
Event Four - Condensate/Booster Pump Trip with Failure of STBY to Auto Start Trigger Position Crew Actions or Behavior NOTE: The first Cond/Boost pump the ATC attempts to start will also trip. The other non
-running Cond/Boost pump will start and remain running.
9 25 26 SIMULATOR OPERATOR / ROLE PLAY:
At the discretion of the Lead Examiner, activate trigger 9. This will cause a trip of 2A Cond/Boost pump.
Verify trigger 25 automatically activates when 2B Cond/Boost PP breaker closes and if 2D Cond/Boost PP trip malfunction is not true. This trips 2 B Cond/Boost PP
. Verify trigger 26 automatically activates when 2 D Cond/Boost PP breaker closes and if 2 B Cond/Boost PP trip malfunction is not true. This trips 2 D Cond/Boost PP
. ROLE PLAY:
EO to check operation of started Cond/Boost pump: wait 2 min, the report "the 2B (or 2D) Cond/Boost pump is operating normally".
EO to check the breaker for tripped pump: wait 2 min, and then report "the breaker has an overcurrent target up".
If another Cond/Boost pump trips, report: the breaker is open, but no flags are up".
ATC Announces alarm:
902-6 F-5, CONDENSATE BOOSTER PP TRIP. Determines STBY pump (2D) did not start.
May place STBY PP SELECTOR switch to OFF.
Attempts to start either 2B or 2D Condensate Booster pump.
Determines Condensate Booster pump started tripped.
Starts other non
-tripped pump.
Determines it started and is operating properly.
CRS Enters DOA 0600
-01, TRANSIENT LEVEL CONTROL.
Enters DOA 6500
-10, 4KV CIRCUIT BREAKER TRIP.
Directs starting an available Condensate Booster pump.
ATC Refers to DOA 6500
-10, 4KV CIRCUIT BREAKER TRIP and:
Directs an EO to check the Condensate Booster pump just started and inspect tripped Condensate Booster pumps.
Direct an EO to check the breakers of tripped Condensate Booster pumps.
Places 2 A Condensate Booster pump control switch in Pull to Lock.
Notifies Ops Shift Supervisor.
Requests EMD to troubleshoot.
ILT-N-3 Page 15 of 25 Rev. 00 (04/12)
Event Four - Condensate/Booster Pump Trip with Failure of STBY to Auto Start Trigger Position Crew Actions or Behavior BOP Monitors panels and assists as directed.
Event 5 Completion Criteria:
An available Condensate Booster pump started , AND/OR At the direction of the Lead Examiner.
ILT-N-3 Page 16 of 25 Rev. 00 (04/12)
Event Five
- Loss of Feedwater Trigger Position Crew Actions or Behavior 10 Simulator Operator:
After completion of the previous Event, and at the discretion of the Lead Evaluator, activate trigger 10, which trips 2B RFP. Note: 2C RFP is prevented from starting.
Simulator Operator / Role Play:
E O to open/close the CRD 2
-0301-25 valve: On Instructor Station drawing RD2, change the CRD 2-0301-25 valve position to the requested position and then report its position.
BOP Reports annunciator 902
-6 F-7, RFP Trip.
Determines Standby RFP did not auto start as expected.
Attempts to start the Standby RFP. (Unsuccessful)
TEAM Determines that reactor will scram automatically on low RPV level due to insufficient Feedwater flow.
CRS Directs team to perform a manual reactor scram per DGP 02
-03, Reactor Scram. ATC Performs DGP 02
-03, Reactor Scram, actions as directed:
Depresses BOTH Scram buttons.
Places RX MODE SW in SHUTDOWN.
Observes that control rods did not go in and initiates ARI.
Announces:
Rods did NOT go in.
ARI actuated.
Electric al ATWS. Controls RPV level as directed.
Note: HPCI is one of the Preferred ATWS Injection systems. If it is used, the operator must inject in a controlled manner to prevent causing a power spike and complicating the accident mitigation strategy.
BOP Performs DGP 02-03, Reactor Scram, actions as directed:
Silences annunciators at Panel 902(3) 8, until the NSO reports reactor level and pressure trends.
Silences Panels 902(3) 54 and 902(3) 65 annunciator alarms.
Event 5 Completion Criteria:
Reactor has been manually scrammed, AND/OR, At the direction of the Lead Examiner.
ILT-N-3 Page 17 of 25 Rev. 00 (04/12)
Event Six
- Electrical ATWS / ARI Unsuccessful Trigger Position Crew Actions or Behavior 1 1 1 2 SIMULATOR OPERATOR / ROLE PLAY:
Operator to pull scram fuses: wait 4 min, then activate trigger 1 1. This sequentially pulls the scram fuses.
Operator to vent the scram air header: wait 5 min, the activate trigger 1 2. This vents the scram air header.
1 3 SIMULATOR OPERATOR / ROLE PLAY:
Operator to bypass Low RPV water level MSIV and High Radiation Offgas isolations: wait 3 min, activate trigger 1 3 , and then report "the Low RPV water level MSIV and High Radiation Offgas isolations have been defeated".
CRS Enters DEOP 100, RPV Control.
Due to report of ATWS condition, exits DEOP 100 AND enters DEOP 0400
-05, Failure to Scram, and directs/performs:
Placing ADS to inhibit. (Not expected to be a Critical Task for this scenario)
Placing Core Spray pumps in PTL.
Inserting control rods using Alternate Rod Insertion.
Directs driving control rods.
Directs pulling scram fuses.
Directs venting scram air header.
Verifying required auto actions.
Installing of the jumpers for the MSIV low level isolations and the Off Gas high Rad isolations.
Stabilizing RPV pressure below 1060 psig.
ATC Inserts control rods per DEOP 500
-05, Alternate Insertion Of Control Rods, as follows: (RPV
-6.1) Pulling scram fuses.
Drives rods by:
Bypassing the RWM.
Maximizing CRD drive water pressure.
Uses either the ROD MOVEMENT CONTROL switch or the EMERG ROD IN position of the ROD OUT NOTCH OVERRIDE switch.
CRS Based on report that all control rods are inserted, exits DEOP 0400
-05 and enters DEOP 0100.
ILT-N-3 Page 18 of 25 Rev. 00 (04/12)
Event Six
- Electrical ATWS / ARI Unsuccessful Trigger Position Crew Actions or Behavior ATC / BOP Performs as directed:
Re-establishes injection using available injection systems to MAINTAIN RPV water level above
-143" (in band directed by Unit Supervisor).
Event 6 Completion Criteria:
Control rods inserted, (Or in progress)
AND/OR, At the direction of the Lead Examiner.
ILT-N-3 Page 19 of 25 Rev. 00 (04/12)
Critical Tasks
- With a control rod drifting out to a position where core damage could occur, TAKE ACTION TO PLACE THE CONTROL ROD AT A SAFE POSITION (00). (RPV-6.1) With a reactor scram required and the reactor not shutdown, TAKE ACTION TO REDUCE POWER by injecting boron and/or inserting control rods, to prevent exceeding the primary containment design limits.
ILT-N-3 Page 20 of 25 Rev. 00 (04/12)
REFERENCES PROCEDURE TITLE DAN 902-3 D-7 2A/B CORE SPRAY HDR PRESS LO DAN 902-5 A-3 ROD DRIFT ALARM DAN 902-5 F-3 ROD DRIVE HI TEMP DAN 902-6 F-5 CONDENSATE BOOSTER PP TRIP DAN 902-6 F-7 RFP TRIP DEOP 0100 RPV CONTROL DEOP 0400-05 FAILURE TO SCRAM DEOP 0500-05 ALTERNATE INSERTION OF CONTROL RODS DGA-07 UNPREDICTED REACTIVITY ADDITION DGP 01-01 UNIT STARTUP DGP 02-03 REACTOR SCRAM DOA 0300-0 1 CONTROL ROD DRIVE SYSTEM FAILURE DOA 0300-05 INOPERABLE OR FAILED CRDS DOA 0300-12 MISPOSITIONED CONTROL ROD DOA 6500-10 4KV CIRCUIT BREAKER TRIP DOP 0400-01 REACTOR MANUAL CONTROL SYSTEM OPERATION DOP 0400-02 ROD WORTH MINIMIZER DOP 5600-06 UNIT 2 TURBINE STARTUP TS 3.1.3 CONTROL ROD OPERABILITY TS 3.5.1 ECCS OPERATING
ILT-N-3 Page 21 of 25 Rev. 00 (04/12)
EXAM ILT-N-1 QUANTITATIVE ATTRIBUTES 7 Total malfunctions (5
-8) 1 Malfunctions after EOP entry (1
-2) 3 Abnormal events (2
-4) 2 Major transients (1
-2) 1 EOPs entered/requiring substantive actions (1
-2) 1 EOP contingencies requiring substantive actions (0
-2) 2 Critical tasks (2
-3)
ILT-N-3 Page 22 of 25 Rev. 00 (04/12)
Computer Aided Exercise Programs
- ILT-N-3.cae # For ILT Class 11
-1 NRC Exam
- Written by MP
- Rev 00 # Date 05/12
- INITIAL CONDITIONS
- Sets APRM Master Gain pot to 1.0 irf niagain 1.0
- Inserts an Electrical ATWS imf b12
- Prevents ARI from working.
imf ser1026 off imf ser1060 off irf aw4 pulledl4
- Prevents 2D Cond/Boost PP from Auto starting by
- Overriding OFF the PUMP 2D position of the STBY SELECT switch, # and overriding ON the 2D Cond/Boost PP STANDBY light.
ior fwdselcb2 (6) 1l2
ior fwdselcb4 (6) 1l2 ior fwlsbycb4 (6) onl2
- EVENT TRIGGERS
- Event Trigger 1 sets gain for all 6 APRMs.
trgset 1 "0"l2
trg 1 "irf niagainf true"l4
- Event Trigger 2 Causes control rod K
-08 to drift out. trgset 2 "0"l4
trg 2 "imf rodk08do"l4
- Event Trigger 3 Activates when EITHER:
-08 passes position 10; OR, # Control rod K
-08 individual scram switch is placed to the SCRAM position.
- Deletes control rod K
-08 drift out malfunction.
trgset 3 "(rdzactls(91) .gt. 30.5).or. (.not. rpdtscrm_drw(91))"l28 trg 3 "dmf rodk08do"l6
- Event Trigger 4 inserts a failure high of the indicated flow to the CRD flow controller.
- Sets one of the CRD"s enthalpy higher, so alarm 902
-5 F-3 comes up soone
- r. trgset 4 "0"l6 imf rdfcfhi (4)l6 trg 4 "set rdhmech(21) = 190.0"l8
- Event trigger 5 Activates when CRD temp high is reached.
- Forces alarm 902
-5 F-3 up. trgset 5 "rdgtemp(21) .gt. 250.0"l8
imf ser0973 (5) onl8
- Event trigger 6 Returns alarm 902
-5 F-3 to normal.
trgset 6 "sezpoint(973) .and. (rdgtemp(21) .lt. 245.0)"l8
ILT-N-3 Page 23 of 25 Rev. 00 (04/12) trg 6 "imf ser0973 normal"l10
- Trigger 7 Initiates a 1% break at the 2B core spray pump casing.
trgset 7 "0"l1 0 trg 7 "set wamwlps = 6500.0"l10 imf csppbbrk (7) 1.0l10
-1402-36B valve) trgset 8 "0"l12
irf csbfilof (8) closedl12
- Event Trigger 9 Trips 2A Cond/Boost PP.
trgset 9 "0"l12
imf h21 (9)l12 # Event Trigger 25 Activates when 2B Cond/Boost PP breaker closes and
- if 2D Cond/Boost PP trip malfunction is not true.
- Trips 2B Cond/Boost PP.
trgset 25 "et_array(9) .and. fwsacbcb(2) .and. (.not. fwm433f(4))"l24
imf h22 (25)l14
- Event Trigger 26 Activates when 2D Cond/Boost PP breaker closes and
- if 2B Cond/Boost PP trip malfunction is not true.
- Trips 2B Cond/Boost PP.
trgset 26 "et_array(9) .and. fwsacbcb(4) .and. (.not. fwm433f(2))"l26
imf h24 (26)l14
- Event Trigger 10 Trips RFPs.
trgset 10 "0"l14
imf h31 (10)l14 imf h32 (10 1:00)l16 imf h33 (10 2:00)l16
imf h34 (10 2:00)l16
Trgset 11 "0"l16 irf rpfusea1 (11) pulledl18
irf rpfusea2 (11 20) pulledl18 irf rpfusea3 (11 40) pulledl18 irf rpfusea4 (11 60) pulledl18 irf rpfuseb1 (11 1:20) pulledl20
irf rpfuseb2 (11 1:40) pulledl20
irf rpfuseb3 (11 2:00) pulledl20 irf rpfuseb4 (11 2:20) pulledl20
trgset 12 "0"l22
irf rdscrair (12) openl 22
trgset 13 "0"l22
irf ci59jp (13) inl22
irf ogogjp (13) inl22
- END ILT-N-3 Page 24 of 25 Rev. 00 (04/12)
Unit 2 Risk: GREEN Unit 3 Risk: GREEN Unit 2 is in S/U at 5 MWe, Leading Thermal Limit: MFLCPR @ 0.881 Action limit: 0.980 Equipment Unavailable: None Protected Equipment: None Unit 3 is in Mode 1 at 913 MWe
Leading Thermal Limit: MAPRAT @ 0.819
Action Limit: 0.980 Equipment Unavailable: None Protected Equipment: None Current Action Statements None LCO Started:
LCO Expires:
TS Cause: Unit 1 Plant Status Today U1 Diesel Oil Storage Tank Transfer House has grating removed. Currently roped off with pump installed to pump to U1 Oil Seperator Pit as required. Outside operator monitor and pump as necessary.
Today Chem Cleaning ventilation status:
HV-1A/EF-1A are secured due to HV
-1A inlet and outlet dampers being shut with fan on, IR# 913157, WO 1239746. HV-1B/EF-1B are secured due to HV
-1B throwing its belts. WO 1156150.
HVAC -1 ON. HV-2 running.
Switchyard Status Today 138 KV Bus 1 Feed To TR 22 Combi Units has low oil in the 'C' phase, ComEd WO #276162 Today HVO: Exercise CAUTION while in the 345 KV Yard due to excavation being performed in the are
- a. Marv Evans reports holes being dug near manual switch disconnects 345 KV Blue Bus. Plywood will be installed over the holes if access is needed, but be aware there are holes under the plywood.
SSC called from the 345 KV yard reporting that the cable trough covers are removed to prep for upcoming work. Be careful.
ILT-N-3 Page 25 of 25 Rev. 00 (04/12)
Unit 2 Plant Status Today Unit 2 Activities
- Shift 1 Activities ****
- Shift 2 Activities ****
nspection, and when directed by the Shift Manager, resume the startup per DGP 01
-01. Turbine maintenance is in progress. Turbine warm
-up will commence after post maintenance inspections have been completed.
- Shift 3 Activities ****
Today **** Unit 2 Procedures In
-Progress **** Do Not Delete ****
-01, Unit Startup