ML040490438
| ML040490438 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 10/17/2003 |
| From: | NRC/RGN-II |
| To: | Duke Energy Corp |
| Shared Package | |
| ML040510003 | List: |
| References | |
| 50-269/03-302 50-269/03-302 | |
| Download: ML040490438 (9) | |
See also: IR 05000269/2003302
Text
Final Su brnittal
OCONEE JUNE 2003 RETAKE
EXAM 50-269120 03-3 02
OCTOBER 17,2003
CRITICAL TASKS
Scenario z :
2. CT-3, Isolate Possible WCS Leak Paths
CT-10, Establish FW FISW and Feed SGs
4. CT-20, RCS Pressure Control TQ Prevent Exceeding RV P-T Limits And Comply
With PTS Guidance
5. CT-27, Implementation of Control Room Habitability Guidance
3.
Spare:
1. CT-5, Control HPI
3. CT-11, Control SG pressure to Maintain WC Temperature Constant.
4. CT-26, Restore Feed Po A Dry SG
2. CT-10, E~tablish RN Flow and Fwd SGS
Appendix B
Scenario Outline
Form ES-D-1
Facility: Bconee
Scenario No.: 1 RO
Examiners:
Operators:
Initial Conditions:
45% Reactor Power, (Snap 201 1
Turnover:
o
Startup in progress after adding oil to 1 B1 RCP
0
SASS in MANUAL for I&E troubleshooting
0
18 MDEFDW Pump 00s
e
After turnover, the crew should start 1 B1 RCP
Event
No.
Od
1
2
3
4
5
6
7
a
9
Malf. No.
Re-Insert
Pre-Insert
MSS2TQ
Pre-lnS?rt
MP1290
Pre-Insert
MPS350
Override
Z342D1
Op-Test No.: _.
discharge pressure
Turbine Header Pressure fails LOW
RCS NR Pressure fails HBGH
g_
(NJomal, (W)eactivity,
(I)nstrument, {C)ornponent, (M)ajor
NUREG-4021, Draft Revision 9
Page 1 of 12
Scenario #1 Overview RO
initial Conditions: Unit 1 : 45% power - EOL, Unit 2: 1 Q0%, Unit 3: 100%
Turnover:
e
e
e
1B MDEFDW Pump 00s
Startup in progress after adding oil to 181 RCP
SASS in MANUAL for !&E troubleshooting
After turnover, the crew should stad 1 B I RCP
2 1 Start 4 B1 RCP: (N, OATC)
a9 Reactor power was reduced so oil could be added to the 184 RCP. The oil
addition has been completed and the crew is directed to start the 1 E31 RCP per
OPII/AI1103/006.
TIME = 5 minutes
4) 1 B1 RCP AC Oil Lift pump wili not develop adequate discharge pressure: (6,
a) Prior to stading the I Bf RCP, the RCP AC Oil Lift pump will be started. The
O A K )
OAC should be monitored and the RCP started after the low oil pressure a8am
clears. The low pressure condition will not clear and the AC Oil Lift pump wilt stop
after three minutes. The operator should follow procedural guidance and use the
DC Oil Lift pump and complete starting the 1 81 RCP.
a) The crew should utilize Plant Transient Response to stabilize the plant. The
Turbine master will transfer to manual. The O A K should take the Diamond
Panel and the FDW Masters bo manual. FDW, Control Rods, and Turbine Header
pressure should be adjusted to stabilize the plant.
b) The SRO should refer to AP128 (BCS Instrument Failures).
TIME = 10 minutes. TOTAL 20 min.
4) BWST rupture: (C,
ALL) (TS)
a) A crane will damage the BWST resulting in level rapidly decreasing to a24 feet.
b) The SRO should refer to TS 3.5.4 and determine that a unit shutdown is
TIME = 10 minutes, TOTAL 30 rnin.
required.
Page 1 of 3
Scenario #I
Overview RO
5) Manual unit shutdown: (R, BATC)
a9 FDW, Control Rods, and Turbine Header pressure will be controlled to manually
TIME = 28 minutes, TOTAL 40 min.
shutdown the unit.
$1 RCS NR Pressure fails HIGH: (I, O A K )
a) After the manual unit shutdown, RCS NR Pressure will fail high and the crew
b) The PPK heaters will de-energize and PZR spray (1 RC-2 ) will open. The PORV
should utilize Plant Transient Response to stabilize the plant.
(1 RC-66) will also open. Actual RCS pressure will decrease and the reactor wilt trip
on low pressure in about one minute without operator action.
c) The crew should refer to the ARGs and the SRO should direct the crew to close the
PORV or 1 RC-4 (Spray Block) and 1RC-1 (PZR Spray). The PZR heaters should
be cycled as required to control RCS pressure.
d) The SRO should refer to AP/28 (ICs instrument Failures).
TIME = 5 minutes. TOTAL 45 min.
7) Main FDW pumps trip and Main Turbine Fails to trip (Lockout EHC Pumps): (C,
O A K )
a> Both Main FDW pumps will trip resulting in a reactor trip. The Main Turbine
should trip but does not. This will result in a reduction in steam pressure in both
SGs until actions are taken to trip the turbine. The will result in RCS overcooling
until the Main Turbine is tripped.
and then perform the WNO step which will stop both EHC pumps. This wilt cause
the turbine to trip.
b) While performing IMAs, the O A K should diagnose that the turbine did not trip
TIME = I
minutes, TOTAL 46 min.
8) R6S leak to SBLQCA (ramp over 10 minutes): (M, ALL)
a) The RCS leak will require entry into AP/2 (Excessive RCS Leakage). The leak
will increase causing a loss of SCM.
$1 RULE 2 (Loss OB SCM) wiill be implemented and the SRO will transfer to the Loss
of Subcooling Margin (LOSCM) tab of the EO$. The SRO will then transfer to
the LOCA Cosldown (LOCA CD) tab of the EO$.
receive an ES signal and will not go to LOW speed. The RO should diagnose this
and place the A RBCU in LOW speed.
c> EOP Enclosure 5.1 (ES Actuation) will be implemented. The A RBCU will not
TIME = 20 minutes. TOTAL 66 min.
Page 2 of 3
Scenario #I
Overview RO
9) RCS leak isolated, SCM increases > 0°F: (U, ALL)
a) After transfer is made to the LBCA CD tab ~f the EO$ the leak will be isolated.
Phis will cause SCM to increase > 0°F and a transfer should then be made to
Subsequent Actions. After the transfer to Subsequent Actions is made the
scenario may be stopped.
TIME = 10 minutes, TOTAL 76 min.
Page 3 of 3
Appendix D
Scenario Outline
FOSS~
Facility: Qcornee
Scenario No.: SPARE RO
Op-best No.: __
Examiners:
Operators: Tracey Roland (SRO-U)
Kevin Caoley (RO)
Initial Conditions:
e 100% Reactor Power, (16-41)
Turnover:
o
ANBSACtDSS bypassed for !&E testing
o
Unit 1 TDEFDWP has been out of service for bearing replacement for a b u t
16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br />. Expect it to be returned to service within the next 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.
Pre-insert
I BDERNP fails to start
2
I Override
I C. BATC. SRO I I
ti-I , LDST SUBPBY. fails O D ~ W
(TS)
Failed CLOSED
.. . .
..
(N)orrnal. (Rjsactivity, (i)ristrurnent, (C)omponent, (k1)ajor
NUREG-1021, Draft Revision 9
Page I of 13
Scenario Spare Qverview RO
Initial Conditions: Unit 1 : 100% power - EOb, Unit 2: 1 IO%, Unit 3: 100%
Turnover
6
AMSAClDSS bypassed for I&E testing
6
Unit 1 TBEFWP has been out of sewice for bearing replacement for about 116
hours. Expect it to be returned to sewice within the next 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.
1) Pressurize the LDST with H2: (N, OATC)
Statalarm will actuate indicating that the LDST H2 pressure is low. Crew should repr
to the A 8 6 and the LDST Pressure vs bevel curve. The crew should then add H
to the LDST.
TIME = 10 minutes
2) 1H-1 fails OPEN: (C, OATC) (TS)
During the H* addition to the LDST, 1 H-1 (LDST Supply) will fail OPEN repiring the
OATC to direct the primary NEO to close the isolation valve to stop the H addition.
Isolation by the NE0 will be delayed and BOTH trains of HPI must be declared
inoperable due to operation outside of permissible Operating Region on the LDST
Pressure vs bevel curve.
TIME = 5 minutes, TOTAL 15 min
3) Phd fails HIGH: (I, QATCJ
a) The crew should diagnose the failure and stabilize the plant by using the Plant
b) The BAPC should place both FDW Masters and the Diamond Panel to manual to
e) This failure will not be repaired and the ICS will remain in manual.
d) The SWO should refer to AW28 (ICs Instrument Failures).
TIME = 5 minutes, TOTAL 20 min
Transient Response process.
mitigate the transient and stabilize the plant.
4) I A CC Pump trips: (C, O A K )
a) The crew should refer to ARG and to AP/(32Q (Loss of Component Cooling). The
b) The crew should initiate investigation and repair of l A CC pump and 1 B CC auto
TIME = 5 minutes, TOTAL 25 min.
O A K should manually start the standby CC pump.
stakt failure.
5) iHP-5 Fails closed: (c, ONC) ~ , b R O A-
a) Kecognize that 1 HP-5 closed due to high letdown temperature, and refer to the
b) When the crew recognizes that 1 HP-5 has failed closed, the SRO should refer to
c) An operator should be dispatched to manually open 1 HP-5.
ARG for stat alarm 1 SA-2/C-1, Letdown Temperature High.
AW032, Loss of Letdown.
~ & 6 6 ( 4 n / l v #
TIME = 10 minutes, TOTAL 35 mln.
Page i of2
Scenario Spare Overview RO
6) ID1 Heater Drain Pump oil leak: (C, All)
a9 The basement NE0 will notify the control room that the 1 D1 HDP has a severe
oil leak. Crew should refer tcr 8P/1//1106/0028 (Shutdown of the 1 D l HDP).
The SWO should direct the crew to reduce CTP to .e 87% and secure the 1 D1
HDP.
TIME = I O minutes, TOTAL 45 min.
5) Manual reactor power decrease: (R, O A K )
a) The OATC should reduce power with the control rods and the FDW Masters in
TIME = 15 minutes, TOTAL 60 min.
manual.
8) Loss of Main Feedwater with 1 FDW-316 Failed CLOSED: (M, ALL)
a) After reactor power has been reduced both main FDW pumps will trip and
4 FBW-346 will fail closed. The SRO will refer to the EOP. Rule 3 (boss of Main
or Emergency Feedwater) should be implemented after the completion of lMAs
and symptoms check because of the loss of Main FBW. The failure of I
FDW-316
should be diagnosed and ENV aligned through the startup header. Until flow is
aligned through the B startup header no Main OF ENV flow will reach the SGs
due to the 1A MDEFDWP not operating and 1 FDW-316 failed closed. If the
alignment through the startup header is delayed HPI Forced cooling must be
initiated.
TIME = 10 minutes, TOTAL 90 min.
9) Loss of Main and Emergency Feedwater, I
B MBEFDWP trips (CBP Feed): (M,
ALL)
a) After flaw has been established through the startup header the 1 B MDEFBWP
will trip. This results in a total loss of Main and Emergency Feedwater. The SRO
should transfer to the Loss of Heat Transfer (LOHTJ tab of the EOP. The OAT@
should feed the OTSGs using the CBPs per the guidance in Rule 3 (Loss of Main
or Emergency Feedwater).
TIME = 10 minutes, TOTAL 80 min. 7
1O)TDEFDWP returned (CBP feed recovery)
a) After the plant is stable, the crew will be notified that the TDEFDWP has repaired
and is now available. The SRO will direct the crew to recover from CBP feed by
using the TDEFDWP to feed the SGs per EOP guidance. When the TDEFDWP
is feeding the SGs and the unit is stable the scenario may be stopped.
TIME = 10 minutes, TOTAL 90 min.
Page 2 of 2