ML18120A026
| ML18120A026 | |
| Person / Time | |
|---|---|
| Site: | Three Mile Island  |
| Issue date: | 04/06/2018 |
| From: | Exelon Generation Co |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML18117A343 | List:
|
| References | |
| TMI-18-047 | |
| Download: ML18120A026 (6) | |
Text
ATTACHMENT 3-7C MANUAL ACTIONS AND REPAIRS REQUIRED FOR COLD SHUTDOWN IN ANY FIRE AREA/ZONE (NOTE 4) SHEET 1 FHAR3-7C.doc Rev. 27 System Function (1) Condition which requires action (Equipment Failure) (2) Applicable Fire Area / Zones (3) Manual Action or Repair (3) Action or Repair Required (Note 1) (4) Location where Action or Repair is Performed (5) Time Requirement (6) Time Requirement Basis Comments Action Repair Decay Heat Removal DR-P-1A is not remotely operable ISPH-FZ-2 X X 1) Repair control cable LR24 by lifting and taping all conductors. 2) Start DR-P-1A at 1R 480V switchgear. ISPH-FZ-1 Prior to initiating DHR Decay Heat Removal DR-P-1B is not remotely operable ISPH-FZ-1 X X 1) Repair control cables LT21 and LT24 by lifting and taping all conductors. 2) Start DR-P-1B at 1T 480V switchgear. ISPH-FZ-2 Prior to initiating DHR Decay Heat Removal DC-P-1A and DC-P-1B not remotely operable AB-FZ-7 X Repair power cable LP2 for DC-P-1A or LS2 for DC-P-1B by splicing in a new power cable. AB-FZ-7 Prior to initiating DHR Repair restores control room or local switchgear operation. Decay Heat Removal DH-P-1A is not remotely operable CB-FA-2b X Repair control cable MD63 by lifting and taping all conductors. CB-FA-3a Prior to initiating DHR Repair restores control room or local switchgear operation. Decay Heat Removal DH-P-1B is not remotely operable AB-FZ-5 FH-FZ-1 X Repair power cable ME6 for DH-P-1B by splicing in a new power cable. FH-FZ-2 FH-FZ-1 AB-FZ-4 AB-FZ-5 Prior to initiating DHR Repair restores control room or local switchgear operation. Decay Heat Removal DH-V-1 and DH-V-2 are not remotely operable CB-FA-2c, CB-FA-2e, CB-FA-3c, CB-FA-3d, CB-FA-4b, FH-FZ-1, FH-FZ-2 FH-FZ-5, RB-FZ-1a RB-FZ-1b, RB-FZ-1c RB-FZ-1e, RB-FZ-2 TB-FA-1 X Locally open DH-V-1 and DH-V-2 RB-FZ-1e RB-FZ-1c Prior to initiating DHR Decay Heat Removal DH-V-3 remote operation is unavailable. AB-FZ-4, CB-FA-2c CB-FA-2e, CB-FA-3c CB-FA-3d, CB-FA-4b FH-FZ-1, FH-FZ-5 X Locally open DH-V-3 AB-FZ-4 66 Hours (Note 3) ECR 09-00527 Decay Heat Removal DH-V-4A is not remotely operable AB-FZ-6 CB-FA-2b X Manually open DH-V-4A AB-FZ-4 Prior to initiating DHR Decay Heat Removal DH-V-4B is not remotely operable AB-FZ-4, AB-FZ-5 AB-FZ-6a, CB-FA-2d CB-FA-2f, CB-FA-3c CB-FA-3d, CB-FA-4b FH-FZ-1 X Manually open DH-V-4B AB-FZ-4 66 Hours (Note 3) Decay Heat Removal BS-V-3A fails open AB-FZ-6 CB-FA-2b X Locally close BS-V-3A AB-FA-1 Prior to initiating DHR Decay Heat Removal BS-V-3B fails open. AB-FZ-5, AB-FZ-6a CB-FA-2d, CB-FA-2f CB-FA-3c, CB-FA-3d CB-FA-4b, FH-FZ-1 X Locally close BS-V-3B AB-FZ-2 66 Hours (Note 3) Decay Heat Removal DH-V-7A fails open AB-FZ-6 X Locally close DH-V-7A AB-FZ-4 Prior to initiating DHR ATTACHMENT 3-7C MANUAL ACTIONS AND REPAIRS REQUIRED FOR COLD SHUTDOWN IN ANY FIRE AREA/ZONE (NOTE 4) SHEET 2 FHAR3-7C.doc Rev. 27 System Function (1) Condition which requires action (Equipment Failure) (2) Applicable Fire Area / Zones (3) Manual Action or Repair (3) Action or Repair Required (Note 1) (4) Location where Action or Repair is Performed (5) Time Requirement (6) Time Requirement Basis Comments Action Repair Decay Heat Removal DH-V-7B fails open. AB-FZ-4, AB-FZ-5 AB-FZ-6a, CB-FA-2d CB-FA-2f, CB-FA-3d CB-FA-4b, FH-FZ-1 X Locally close DH-V-7B AB-FZ-2 66 Hours (Note 3) Decay Heat Removal Initiate Decay Heat Removal System operation CB-FA-3d CB-FA-4b CB-FA-3c X 1) Start DH-P-1B at 1E 4160V switchgear 2) Locally throttle DH-V-19B to 2500 to 3500 GPM using DH-FI-299B DH Flow indicator. CB-FA-3b AB-FZ-4 66 Hours (Note 3) ECR 09-00527 ECR 08-01051 Decay Heat Removal Initiate Decay Heat Removal System operation AB-FZ-2, AB-FZ-2c AB-FZ-3, AB-FZ-6 AIT-FZ-1a, CB-FA-2b CB-FA-2c, CB-FA-2e CB-FA-2g, CB-FA-3b DG-FA-2, FH-FZ-2 FH-FZ-5, ISPH-FZ-2 X 1) Locally open DH-V-12A 2) Locally throttle DH-V-19A to 2500 to 3500 GPM using DH-FI-299A DH Flow indicator. AB-FZ-4 Prior to initiating DHR Required in all fire areas/zones available, either DH-V-19A or DH-V-19B can be manually operated. Decay Heat Removal Initiate Decay Heat Removal System operation AB-FA-1, AB-FZ-4 AB-FZ-5, AIT-FZ-1 CB-FA-1, CB-FA-2a CB-FA-2d, CB-FA-2f CB-FA-3a, DG-FA-1 FH-FZ-1, FH-FZ-6 ISPH-FZ-1 X Locally throttle DH-V-19B to 2500 to 3500 GPM using DH-FI-299B DH Flow indicator. AB-FZ-4 Prior to initiating DHR. Required in all fire areas/zones available, either DH-V-19A or DH-V-19B can be manually operated. Decay Heat Removal DH cooler outlet temperature indication unavailable FH-FZ-1 FH-FZ-5 X Use temporary local temperature measurements of DH Cooler Outlet Temperature CB-FA-3d Prior to initiating DHR Decay Heat Removal Control cooldown using Decay Heat Removal System AB-FZ-2, AB-FZ-3 AB-FZ-6, AB-FZ-7 AB-FZ-9, AB-FZ-10 DG-FA-2, FH-FZ-2 FH-FZ-3, FH-FZ-4 IB-FZ-1, IB-FZ-2 IB-FZ-3, IB-FZ-4 IB-FZ-5, IB-FZ-6 IB-FZ-8, ISPH-FZ-2 ISPH-FZ-3, TB-FA-1 X Locally throttle DC-V-2A and DC-V-65A to control DC system flow (DC-FS-26), and control RCS heat removal. AB-FA-1 AB-FZ-4 Prior to initiating DHR and required to cool to CSD using DHR DC-FS-26 is local (AB-FZ-4) mechanical flow indicator. Required for all fire areas/zones Action required for either DC-V-2A/65A OR DC-V-2B/65B where ATTACHMENT 3-7C MANUAL ACTIONS AND REPAIRS REQUIRED FOR COLD SHUTDOWN IN ANY FIRE AREA/ZONE (NOTE 4) SHEET 3 FHAR3-7C.doc Rev. 27 System Function (1) Condition which requires action (Equipment Failure) (2) Applicable Fire Area / Zones (3) Manual Action or Repair (3) Action or Repair Required (Note 1) (4) Location where Action or Repair is Performed (5) Time Requirement (6) Time Requirement Basis Comments Action Repair Decay Heat Removal Control cooldown using Decay Heat Removal System DC-V-2B and DC-V-65B spuriously close or fail open on loss of IA or power. AB-FA-1, AB-FZ-3 AB-FZ-4, AB-FZ-5 AB-FZ-7, AB-FZ-9 AB-FZ-10, CB-FA-1, CB-FA-2d, CB-FA-2f, CB-FA-3d CB-FA-4b, FH-FZ-1 FH-FZ-3, FH-FZ-4 IB-FZ-1, IB-FZ-2 IB-FZ-3, IB-FZ-4 IB-FZ-5, IB-FZ-6 IB-FZ-8, ISPH-FZ-1 ISPH-FZ-3, TB-FA-1 X For a fire in fire areas/zones AB-FZ-4, AB-FZ-5, CB-FA-3d, CB-FA-4b, and FH-FZ-1, disconnect power or air at DC-V-2B and DC-V-65B solenoid. Locally throttle DC-V-2B and DC-V-65B to control DC system flow (DC-FS-27), and control RCS heat removal. AB-FZ-2 Prior to initiating DHR and required to cool to CSD using DHR or 66 hours7.638889e-4 days <br />0.0183 hours <br />1.09127e-4 weeks <br />2.5113e-5 months <br /> (Note 3) ECR 09-00527 DC-FS-27 is local (AB-FZ-4) mechanical flow indicator. Required for all fire areas/zones Action required for either DC-V-2A/65A OR DC-V-2B/65B where EFW EF-P-1 speed cannot be maintained using MS-V-13A and MS-V-13B. IB-FZ-3 X Locally throttle open MS-V-10A and MS-V-10B to continue use of EF-P-1 IB-FZ-2 MS-V-13A or MS-V-13B capacity is adequate at HSD MS-V-13A or MS-V-13B is available from the control room to provide initial steam flow to EF-P-1 EFW EF-V-1A or EF-V-1B spuriously closed due to a hot short CB-FA-3c CB-FA-3d CB-FA-4b X Locally ensure EF-V-1A and EF-V-1B are open. (Both OTSGs are used for cooldown) IB-FZ-3 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (Prior to initiating cooldown) ECR 09-00527 EFW EF-V-2A or EF-V-2B spuriously closed due to a hot short CB-FA-3d CB-FA-4b X Locally ensure EF-V-2A and EF-V-2B are open. (Both OTSGs are used for cooldown) IB-FZ-3 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (Prior to initiating cooldown) ECR 09-00527 Electrical Power Loss of Control Building Ventilation CB-FA-3c CB-FA-3d CB-FA-4b X Open Doors C212 & C213 CB-FA-2d, CB-FA-2f 24 Hours ECR 09-00527, TDR 900 Electrical Power / Component Cooling Loss of both trains of Control Building cooling (fans or chillers) CB-FA-1, CB-FA-2a, CB-FA-2b, CB-FA-2d, CB-FA-2e, CB-FA-2f, CB-FA-3a, CB-FA-4a X Open Doors C212 & C213 CB-FA-2d, CB-FA-2f 24 Hr DR5375339A-2 TDR 900 EL-L-80A EL-L-80B EL-L-15 EL-L-16 RCS Heat Removal MS-V-2A spuriously closed due to a hot short CB-FA-1, CB-FA-2a CB-FA-3a, CB-FA-3d CB-FA-4b, FH-FZ-1 FH-FZ-6, IB-FZ-2 IB-FZ-3 X Locally ensure MS-V-2A is open. (Both OTSGs are used for cooldown) IB-FZ-2 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (Prior to initiating cooldown) ECR 09-00527 EL-L-84A provides lighting.
ATTACHMENT 3-7C MANUAL ACTIONS AND REPAIRS REQUIRED FOR COLD SHUTDOWN IN ANY FIRE AREA/ZONE (NOTE 4) SHEET 4 FHAR3-7C.doc Rev. 27 System Function (1) Condition which requires action (Equipment Failure) (2) Applicable Fire Area / Zones (3) Manual Action or Repair (3) Action or Repair Required (Note 1) (4) Location where Action or Repair is Performed (5) Time Requirement (6) Time Requirement Basis Comments Action Repair RCS Heat Removal MS-V-2B spuriously closed due to a hot short CB-FA-1, CB-FA-2a CB-FA-2b, CB-FA-3a CB-FA-3b, CB-FA-3c CB-FA-3d, CB-FA-4b FH-FZ-1, FH-FZ-5 FH-FZ-6, IB-FZ-2 IB-FZ-6, IB-FZ-7, TB-FA-1 X Locally ensure MS-V-2B is open. (Both OTSGs are used for cooldown) IB-FZ-2 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (Prior to initiating cooldown) ECR 09-00527 EL-L-84A provides lighting. EL-L-84B provides lighting RCS Heat Removal MS-V-4A failed closed due to loss of control or loss of IA. All fire areas/zones where a loss of normal Instrument Air is possible (See Attachment 3-0) PLUS CB-FA-2d, CB-FA-3a, CB-FA-3b, IB-FZ-2, IB-FZ-6, TB-FA-1 X Locally operate MS-V-4A (Both OTSGs are used for cooldown) IB-FZ-2 4 Hours (To establish cooldown rate) Historical standard for RCS Heat Removal MS-V-4B failed closed due to loss of control or loss of IA. All fire areas/zones where a loss of normal Instrument Air is possible (See Attachment 3-0) PLUS CB-FA-2b, CB-FA-2c, CB-FA-2d, CB-FA-3a, CB-FA-3b, FH-FZ-5, IB-FZ-2, IB-FZ-3, IB-FZ-6, TB-FA-1 X Locally operate MS-V-4B (Both OTSGs are used for cooldown) IB-FZ-2 4 Hours (To establish cooldown rate) Historical standard for Decay Heat Removal Feedwater isolated to OTSG B to mitiage XHT caused by spurious opening of MS-V-8B with failed MS-V-3A,B,C CB-FA-3c X Locally close MS-V-8B IB-FZ-2 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> (prior to initiating cooldown) Historical standard for RCS Heat Removal Wide Range RCS Incore or THOT Temperature Indication Unavailable FH-FZ-1 X Provide alternate indication of RC4A-TE-1 (THOT RCS Wide Range Temperature) to support cooldown CB-FA-3d Prior to initiating cooldown. ECR 08-01051 ATTACHMENT 3-7C MANUAL ACTIONS AND REPAIRS REQUIRED FOR COLD SHUTDOWN IN ANY FIRE AREA/ZONE (NOTE 4) SHEET 5 FHAR3-7C.doc Rev. 27 System Function (1) Condition which requires action (Equipment Failure) (2) Applicable Fire Area / Zones (3) Manual Action or Repair (3) Action or Repair Required (Note 1) (4) Location where Action or Repair is Performed (5) Time Requirement (6) Time Requirement Basis Comments Action Repair RCS Heat Removal Prevent feeding OTSG with MFW during cooldown. (FW valve failed open) CB-FA-3d CB-FA-4b X ENSURE CO-P-1A, 1B and 1C are shutdown. TB-FA-1 Prior to reducing OTSG pressure below 200 psig ECR 09-00527 RCS Inventory BWST level indication is not available CB-FA-3b, YARD X Provide alternate method to determine BWST level AUX BLDG Prior to initiating DHR RCS Pressure Control Neither pressurizer vent path (i.e. RC-V-28 and RC-V-44 OR RC-V-2 and RC-RV-2) is available to reduce RCS pressure AND ambient pressurizer heat loss is insufficient. CB-FA-3c CB-FA-3d CB-FA-4b X X 1) Throttle open RC-V-49 and RC-V-50 RB-FZ-3 ECR 14-00097 RCS Pressure Control Pressurizer Heater Groups 8 and 9 are unavailable and one train of DH is unavailable CB-FA-1 X X 1) Provide alternate power to RC-GRP-8 or RC-GRP-9 from FX-Y-1A or FX-Y-1B to 1B Pressurizer Heater Group MCC. 2) Open non-emergency pressurizer heater group breakers. TB-FA-1 Prior to reducing RCS temperature below 313°F Repair restores control room or local MCC operation of RC-GRP-8 or RC-GRP-9. RCS Pressure Control Pressurizer Heater Groups 8 and 9 are unavailable and one train of DH unavailable CB-FA-2b CB-FA-2c FH-FZ-5 X X 1) Repair RC-GRP-8 control cable LP58 by lifting and taping all conductors. 2) Repair RC-GRP-8 power cable LP52 by splicing in new cable. 3) Transfer RC-GRP-8 to emergency power supply (1P 480V ES switchgear) TB-FA-1 CB-FA-2a CB-FA-2b Prior to reducing RCS temperature below 313°F Repair restores control room or local MCC operation of RC-GRP-8 or RC-GRP-9. RCS Pressure Control RCS temperature less than 313ºF CB-FA-3d CB-FA-4b CB-FA-3c X 1) Rack out MU-P-1A breaker 2) Locally close MU-V-16A and MU-V-16B CB-FA-3a AB-FZ-6 Prior to reducing RCS temperature below 313ºF. ECR 09-00527 ECR 08-01051 Tech Spec requirement to prevent LTOP event. RCS Pressure Control Remote control of either CF-V-1A or CF-V-1B is not available. CB-FA-3d CB-FA-4b X Locally close CF-V-1A and CF-V-1B RB-FZ-2 Prior to reducing RCS pressure below 600 psig ECR 14-00097 RCS Pressure Control Remote control of either CF-V-1A or CF-V-1B is not available. CB-FA-3c X Remotely close CF-V-1A and CF-V-1B from 1C ESV MCC FH-FZ-1 Prior to reducing RCS pressure below 600 psig ECR 14-00097 ATTACHMENT 3-7C MANUAL ACTIONS AND REPAIRS REQUIRED FOR COLD SHUTDOWN IN ANY FIRE AREA/ZONE (NOTE 4) SHEET 6 FHAR3-7C.doc Rev. 27 Column Heading Notes: (1) Condition (Equipment Failure): This is the event or effect of the fire that requires action to achieve safe shutdown. As applicable, the associated failure that necessitates action is described in parenthesis. (2) Applicable Fire Areas/Zones: List all of the fire zones where the action may be required for a successful safe shutdown strategy. (3) Action or Repair Required: n. (4) Fire Area/Zone of Action Location: List the Fire Areas (or Zones) where the actions are performed. (5) Time Requirement: Describes the maximum acceptable time for completion of the manual action. In III.G.2 fire areas, the actions needed for cold shutdown must be identified and prepared, and repairs must be completed within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> but there is no requirement to reach cold shutdown within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. In III.g.3 areas, the starting time for applicable action durations is: Fire affects SSD equipment in ESAS room (CB-FA-3c) SRO determines control room evacuation is required (CB-FA-3d and CB-FA-4b) (6) Time Requirement Basis: Basis for the time requirement is described or a reference is provided. Notes: 1. Functions and Actions that are required for Hot Shutdown and for initial cooldown are contained on Attachment 3-7A, and are not repeated on this Attachment unless the function or action is unique or different from the requirements for Hot Shutdown. 2. For all MOVs, it is assumed that the breaker for the locally operated valve will be opened prior to valve operation. This is part of the required manual action. 3. This action must be completed to support initiating DHR operation within 66 hours7.638889e-4 days <br />0.0183 hours <br />1.09127e-4 weeks <br />2.5113e-5 months <br />. This limit is only applicable in Appendix R III.G.3 fire areas (CB-FA-3c, CB-FA-3d, CB-FA-4b) to meet the cold shutdown requirement of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. 4. The table only includes action taken outside of the control room. No exemptions are required for these actions.