RS-15-025, Fourth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)
| ML15058A264 | |
| Person / Time | |
|---|---|
| Site: | Three Mile Island  |
| Issue date: | 02/27/2015 |
| From: | Jim Barstow Exelon Generation Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| RS-15-025, TMl-15-011 | |
| Download: ML15058A264 (33) | |
Text
Order No. EA-12-049 RS-15-025 TMl-15-011 February 27, 2015 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Three Mile Island Nuclear Station, Unit 1 Renewed Facility Operating License No. DPR-50 NRC Docket No. 50-289
Subject:
Fourth Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)
References:
- 1. NRC Order Number EA-12-049, "Issuance of Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events," dated March 12, 2012
- 2. NRC Interim Staff Guidance JLD-ISG-2012-01, "Compliance with Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events," Revision 0, dated August 29, 2012
Revision 0, dated August 2012
- 4. Exelon Generation Company, LLC's Initial Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), dated October 25, 2012
- 5. Exelon Generation Company, LLC Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049), dated February 28, 2013 (RS-13-026)
- 6. Exelon Generation Company, LLC First Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA 049), dated August 28, 2013 (RS-13-131)
- 7. Exelon Generation Company, LLC Second Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA 049), dated February 28, 2014 (RS-14-016)
U.S. Nuclear Regulatory Commission Integrated Plan Report to EA-12-049 February 27, 2015 Page 2
- 8. Exelon Generation Company, LLC Third Six-Month Status Report in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA 049), dated August 28, 2014 (RS-14-214)
- 9. NRC letter to Exelon Generation Company, LLC, Three Mile Island Nuclear Station, Unit 1 - Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) (TAC No. MF0803), dated December 17, 2013 On March 12, 2012, the Nuclear Regulatory Commission ("NRC" or "Commission") issued an order (Reference 1) to Exelon Generation Company, LLC (EGC). Reference 1 was immediately effective and directs EGC to develop, implement, and maintain guidance and strategies to maintain or restore core cooling, containment, and spent fuel pool cooling capabilities in the event of a beyond-design-basis external event. Specific requirements are outlined in Attachment 2 of Reference 1.
Reference 1 required submission of an initial status report 60 days following issuance of the final interim staff guidance (Reference 2) and an overall integrated plan pursuant to Section IV, Condition C. Reference 2 endorses industry guidance document NEI 12-06, Revision O (Reference 3) with clarifications and exceptions identified in Reference 2. Reference 4 provided the EGC initial status report regarding mitigation strategies. Reference 5 provided the Three Mile Island Nuclear Station, Unit 1 overall integrated plan.
Reference 1 requires submission of a status report at six-month intervals following submittal of the overall integrated plan. Reference 3 provides direction regarding the content of the status reports. References 6, 7, and 8 provided the first, second, and third six-month status reports, respectively, pursuant to Section IV, Condition C.2, of Reference 1 for Three Mile Island Nuclear Station, Unit 1. The purpose of this letter is to provide the fourth six-month status report pursuant to Section IV, Condition C.2, of Reference 1, that delineates progress made in implementing the requirements of Reference 1. The enclosed report provides an update of milestone accomplishments since the last status report, including any changes to the compliance method, schedule, or need for relief and the basis, if any. The enclosed report also addresses the NRC Interim Staff Evaluation Open and Confirmatory Items contained in Reference 9.
This letter contains no new regulatory commitments. If you have any questions regarding this report, please contact David P. Helker at 610-765-5525.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 27'h day of February 2015.
Respectfully submitted, James Barstow Director - Licensing & Regulatory Affairs Exelon Generation Company, LLC
U.S. Nuclear Regulatory Commission Integrated Plan Report to EA-12-049 February 27, 2015 Page 3
Enclosure:
- 1. Three Mile Island Nuclear Station, Unit 1 Fourth Six-Month Status Report for the Implementation of Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events cc: Director, Office of Nuclear Reactor Regulation NRC Regional Administrator - Region I NRC Senior Resident Inspector - Three Mile Island Nuclear Station, Unit 1 NRC Project Manager, NRR Three Mile Island Nuclear Station, Unit 1 Ms. Jessica A. Kratchman, NRR/JLD/PMB, NRC Mr. Jack R. Davis, NRR/DPR/MSD, NRC Mr. Eric E. Bowman, NRR/DPR/MSD, NRC Mr. Jeremy S. Bowen, NRR/DPR/MSD/MSPB, NRC Mr. Robert L. Dennig, NRR/DSS/SCVB, NRC Mr. John D. Hughey, NRR/JLD/JOMB, NRC Director, Bureau of Radiation Protection - Pennsylvania Department of Environmental Resources Chairman, Board of County Commissioners of Dauphin County, PA Chairman, Board of Supervisors of Londonderry Township, PA R. R. Janati, Chief, Division of Nuclear Safety, Pennsylvania Department of Environmental Protection, Bureau of Radiation Protection
Enclosure Three Mile Island Nuclear Station, Unit 1 Fourth Six-Month Status Report for the Implemen tation of Order EA-12-049, Order Modifying Licenses with Regard to Requireme nts for Mitigation Strategies for Beyond-Design-Ba sis External Events (29 pages)
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementation of FLEX, February 27, 2015 Three Mile Island Station, Unit 1 Fourth Six-Month Status Report for the Implementation of Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events 1 Introduction Three Mile Island Nuclear Station, Unit 1 (TMI) developed an Overall Integrated Plan (Reference 1 in Section 8), documenting the diverse and flexible strategies (FLEX), in response to NRC Order EA-12-049 (Reference 2). This enclosure provides an update of milestone accomplishments since submittal of the last status report (August 2014), including any changes to the compliance method, schedule, or need for relief/relaxation and the basis, if any.
2 Milestone Accomplishments The following milestone(s) have been completed since August 28, 2014 and are current as of February 27, 2015:
- Engineering for FLEX Platform Modification 3 Milestone Schedule Status The following provides an update to Attachment 2 of the Overall Integrated Plan. It provides the activity status of each item, and whether the expected completion date has changed. The dates are planning dates subject to change as design and implementation details are developed.
The revised milestone target completion dates do not impact the order implementation date.
Original Target Activity Status Completion Date Submit 60 Day Status Report Complete Submit Overall Integrated Complete Implementation Plan Contract with NSRC Complete 6 Month Updates Update 1 Aug., 2013 Complete Update 2 Feb., 2014 Complete Update 3 Aug., 2014 Complete Update 4 Feb., 2015 Complete with this submittal Page 1 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementation of FLEX, February 27, 2015 Original Target Activity Status Completion Date Update 5 Aug., 2015 Not Started Update 6 Feb., 2016 Not Started Modification Development Oct 2014 Phase 1 modifications (1) RCP Seal Upgrade ( 1) Complete Oct 2014 Phase 2 modifications
( 1) FLEX Electrical Power Supply (1) Started (2) FLEX RCS & SFP Makeup (2) Complete (3) FLEX Feedwater System (3) Complete (4) FLEX Storage Facility (4) Started (5) Turbine Bldg Structure (5) Started (6) Turbine Bldg FLEX platform (6) Complete (7) FLEX fuel oil supply (7) Started (8) Spent Fuel Pool Level (8) Started (9) On Site Communications (9) Started modification (10) Reactor Building Vent (10) Started
( 11) Satellite phone storage ( 11) Complete Oct 2014 Phase 3 modifications None Modification Implementation Nov 2015 Phase 1 modifications (1) RCP Seal Upgrade Not Started Nov 2015 Phase 2 modifications
( 1) FLEX Electrical Power Supply Not Started (2) FLEX RCS & SFP Makeup (3) FLEX Feedwater System (4) FLEX Storage Facility (5) Turbine Bldg Structural (6) Turbine Bldg FLEX platform (7) FLEX fuel oil supply (8) Spent Fuel Pool Level (9) On Site Communications modification (10) Reactor Building Vent
( 11) Satellite phone storage Complete Nov 2015 Phase 3 modifications None Page 2 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementation of FLEX, February 27, 2015 Original Target Activity Status Completion Date Procedure development Jun 2015
- Create Site-Specific Procedures Started Jul2015
- Validate Procedures (NEI 12-06, Started Sect. 11.4.3)
Jun 2015
- Create Maintenance Procedures Started Jul2015 Staffing analysis Started Nov 2015 Storage Plan Started Nov 2015 FLEX equipment acquisition Started Nov 2015 Training Started Jun 2015 Regional Response Center Operational Started Nov 2015 Unit 1 Implementation date 4 Changes to Compliance Method The following changes are the most significant changes made to the FLEX implementation strategy since the last update (August 2014 ):
(1) FLEX Diesel Generator and Fuel Oil Supply (Reference Attachment 2A) o The vent piping from FX-T-2 and FX-T-3 will be routed outside the TB independently and the Diesel Generator muffler will be located in the Turbine Building.
(2) FLEX RCS and SFP Makeup System (Reference Attachment 20) o Procedures will be prepared to provide additional borated water source, WDL-T-1C, for RCS makeup if it is available. This method provides defense in depth in addition to the credited capability to obtain borated water with phase 3 capabilities. WDL-T-1 normally contains greater than 20,000 gallons of water borated to > 2000 ppmB. This is a seismic Class I tank located within a Class I tornado protected structure.
The following are the most significant changes made to the FLEX Sequence of Events and Timelines (Reference Attachments 1A, B. C) since the last update (August 2014):
o Condensate valves CO-V-8, 24 and 108 will be closed if the Earthquake or Tornado AOP is entered, rather than based on diagnosis of a loss of condensate.
o Long term condensate supply pumps FX-P-3A or B will be moved from the FLEX storage facility to higher ground offsite, if the Flood AOP is initiated.
Page 3 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementation of FLEX, February 27, 2015 5 Need for Relief/Relaxation and Basis for the Relief/Relaxation TM! expects to comply with the order implementation date and no relief /relaxation is required at this time.
6 Open Items from Overall Integrated Plan and Interim Staff Evaluation Section Reference Overall Integrated Plan Open Item Status (Refer to OIP Update (Refer to OIP Update from Feb 2014) (As of February 2015) from Aug 20i 3)
None I
Page 4 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementa tion of FLEX, February 27, 2015 Interim Staff Evaluation Open Item or Confirmatory Items Item NRC ref Description Status
- no.
FEB 2015 UPDATE 6 3.1.1.2.A The licensee did not specifically address deployment ( 1) The potential for earthquake induced liquefaction has been considerations with respect to the deployment of FLEX evaluated. Deployment of TMl1 FLEX equipment will not be equipment through areas subject to liquefaction, routing adversely impacted. (Reference 990-2179 "Assessment of only through seismically robust buildings, power required earthquake-induced liquefaction potential and associated failure hazards for Three Mile Island Unit 1", Geomatrix to deploy or move equipment, and protection of the Consultants).
means to move equipment. (2) Evaluation of all actions performed within non-seismic structures is in progress (August 2015 Update).
(3) A vehicle stored in the FLEX storage facility will be used to deploy or move FLEX equipment. No additional power is reauired.
7 3.1.1.3.A The licensee did not address the determination of A procedure is being prepared which will provide operators with the necessary instrument local readings per consideration 1 direction on how to obtain any measured parameters critical to of NEI 12-06 Section 5.3.2, to support the implementation implementing the FLEX mitigation strategy without reliance on of the mitigating strategies in the event that seismically functional electrical equipment outside the reactor building after a qualified electrical equipment is affected by a BDBEE. seismic event.
8 3.1.1.4.A The licensee did not identify the local assembly area or The local assembly area (Staging area is the Lancaster describe the methods to be used to deliver the equipment The site staging area is the south parking lot (staging area to the site for all hazards. In the audit process the primary delivery method will be by truck, but airlift capability licensee stated that the TMI NSRC playbook will be made helicopter will be available to address delivery after any hazard.
available when approved to address this.
The TMI NSRC playbook has not been approved. (August 2015 Update) 11 3.1.5.3.A The licensee provided no information regarding the heat An evaluation has been completed which establishes a plan up of various rooms and enclosures in the Integrated portable ventilation will be used to ensure the capability to Plan, and there was no discussion of the potential effects successfully implement the FLEX strategy.
of high temperatures at the location where portable (or Reference 8.
permanently installed FLEX) equipment would actually operate in the event of high temperatures in these plant locations.
Page 5 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the lmolementatio n of FLEX, February 27, 2015 Item / NRC ref Description Status
- no.
FEB 2015 UPDATE 22 I 3.2.1.6.A During the ELAP and LUHS [Loss of Ultimate Heat Sink] A SOE timeline for flooding is provided as Attachment 1 B.
beyond-design-basis external event, the licensee has The capability to perform the actions within the period identified that times to complete actions in the Events analysis will be validated when the procedures are wrltton Timeline are based on operating judgment, the table top, simulator and field simulation exercises.
conceptual designs, and the current supporting analyses.
The TMI mitigation strategy is not based upon the August 2015 Update PWROG WCAP-17601-P ELAP mitigation strategy. In the audit process, the licensee stated that the current SOE is for the seismic event only and that another SOE would be developed for the flood event. Based on the information provided by the licensee, it is not possible to determine the validity of the time constraints provided in the preliminary sequence of events timeline for all hazards. The final timelines will be validated once detailed designs are completed and procedures are developed. The results will be provided in a future 6-month update.
31 3.2.4.1.A The licensee did not specify if the FLEX diesel generators An evaluation has been completed which establishes a plan on the Turbine Building were of sufficient capacity to portable ventilation will be used to ensure the capability to supply any additional cooling need such as the system successfully implement the FLEX strategy. Each FLEX diesel that provides for the steam driven emergency feedwater generator has the capacity for all FLEX (EFW) pump bearing cooling, or any other plant or cooling. Reference 8.
components or cooling systems needed to support the FLEX strategies. Additional formal analysis is required to determine the acceptability of the licensee's plans to provide supplemental cooling to the subject areas, e.g.,
Main Control Room (MCR), EFW room, Atmospheric Dump Valve (ADV) room, battery rooms.
Page 6 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the lmolementation of FLEX. Februarv 27. 2015 Item NRC ref Description Status
- no.
FEB 2015 UPDATE 32 3.2.4.2.A Habitability conditions in the MCA will be evaluated and a Portable ventilation will be utilized to improve CR habitability and strategy will be developed to maintain MCA habitability. provide cooling for key equipment. Reference 8 The strategy and associated support analyses will be provided in a future 6-month update.
33 3.2.4.2.B The analysis of battery room conditions was not Portable ventilation will be utilized to prevent an excessive hydrogen complete, and the licensee noted that additional formal concentration in the battery rooms. Reference 8 analysis to determine the acceptability of their actions regarding the battery room's accessibility is needed. Also additional discussion on the hydrogen gas exhaust path for each strategy is needed, and a discussion of the accumulation of hydrogen to ensure that the hydrogen gas level is below combustible level when the batteries are being recharged during Phase 2 and 3.
34 3.2.4.2.C The licensee did not provide any information regarding Portable ventilation will be utilized to provide cooling for key FLEX temporary cooling/ventilation for areas such as the steam equipment. Reference 8.
driven emergency feedwater pump room, ADV rooms or cable spreading rooms. The licensee's current strategies are based on preliminary analysis. The current strategy for providing cooling or ventilation for these areas is to connect a permanently staged 480V AC diesel generator and fuel tanks to be located in the Turbine Building elevation 322. The strategy is to repower 1A and 1B ES MCCs in four hours and hence supply power for cooling these areas. The licensee did not provide any details regarding what ventilation systems would be repowered for these areas of the plant, or the capacity of the FLEX emergency diesel generators to meet these needs, or how this would be accomplished.
Page 7 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementation of FLEX, February 27, 2015 Item NRC ref Description Status
- no.
FEB 2015 UPDATE 38 3.2.4.4.8 The NRC staff reviewed the licensee communications Essential communications capability will be maintained such assessment and has determined that the assessment for operators can implement the actions necessary to satisfy the EA 12-communications is reasonable, and the analyzed existing 049 required functions, i.e. core cooling, spent fuel cooling and systems, proposed enhancements, and interim measures containment.
will help to ensure that communications are maintained.
Therefore, there is reasonable assurance that the guidance and strategies developed by Exelon conform to the guidance of NEI 12-06 Section 3.2.2 (8) regarding communications capabilities during an ELAP.
Confirmation that upgrades to the site's communications systems have been completed will be accomplished.
39 3.2.4.5.A The licensee provided no information in the Integrated A response plan which coordinates Operations and Security Plan regarding local access to the protected areas under response will be developed which will ensure the security stall can ELAP. support access to the protected area within the time frame for successful 40 3.2.4.6.A The licensee's analysis regarding access to the MCR, An evaluation has been completed which establishes a plan where and battery rooms, is preliminary and additional formal portable ventilation will be used to ensure the capability to analysis is required. In the audit process the licensee successfully implement the FLEX strategy.
specified that temporary ventilation (fans and flexible Reference 8.
ducts) will be used to maintain control room habitability, to control the ambient temperature in control building areas with credited FLEX electrical equipment and to limit the accumulation of hydrogen during battery charging.
This approach uses a "once through" air flow path. The licensee stated that the technical basis to demonstrate that this temporary capability is sufficient and that supporting documentation, ECR [engineering change Request] 13-00310, will be made available to NRC when it is completed.
Page 8 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementation of FLEX, February 27, 2015 Item NRC ref Description Status
- no. FEB 2015 UPDATE 45 3.3.3.A The specific procedures for training, new or revised, have August 2015 Update not yet been completed. The requirements from the analysis will be used to develop and to validate the new and revised procedures. This includes the existing design and licensing basis requirements and the new FLEX requirements. Validation of time response is performed using a composite of field simulation and performance/simulator exercises.
46 3.4.A The licensee's plans for the use of off-site resources All licensees, including Exelon Generation Company, relying on conform to the minimum capabilities specified in NEI 12- SAFER and the National SAFER Response Centers (NSRC), have 06 Section 12.2, with regard to the capability to obtain executed contractual agreements with Pooled Equipment Inventory equipment and commodities to sustain and backup the Company (PEICo) which allows for the capabilities (considerations) site's coping strategies, item 1 . The licensee did not in Section 12.2 of NEI 12-06. The NRC staff evaluated the NSRCs address the remaining items, 2 through 10 of Section and the SAFER program, plans, and procedures against these 10 12.2. capabilities (considerations) from NEI 12-06, Section 12.2. The NRC audit results concluded that the NSRCs and the SAFER plans and procedures conform to the guidance described by the 10 capabilities (considerations) of NEI 12-06, Section 12.2.
The NRC findings are documented in a letter from the NRC (Jack R.
Davis) to the Nuclear Energy Institute (Joseph E. Pollock), Staff Assessment of National SAFER Response Centers Established in Response to Order EA-12-049, dated September 26, 2014 (ML14265A107).
Page 9 of 29
Three Mile Island Nuclear Station, Unit 1 Fourth Six Month Status Report for the Implementation of FLEX, February 27, 2015 7 Potential Draft Safety Evaluation Impacts No potential impact to the Draft Safety Evaluation was identified.
8 References The following references support the updates to the Overall Integrated Plan described in this 6-month update.
- 1. Three Mile Island Nuclear Station, Unit 1, Overall Integrated Plan in Response to March 12, 2012 Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA 049), dated February 28, 2013.
- 2. NRC Order Number EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events, dated March 12, 2012.
- 3. NEI 12-06, Rev. 0, Diverse and Flexible Coping Strategies (FLEX) Implementation Guide, dated August 2012.
- 4. TM-FLEX-002, Reactor Building Pressure Analysis for FLEX, Rev. 0.
- 5. TMI Station's First Six Month Status Report for the Implementation of FLEX, dated August 28, 2013.
- 6. C-1101-734-E420-009 "Extending Battery Life to 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> during an ELAP".
- 7. TMI Station's Second Six Month Status Report for the Implementation of FLEX, dated February 28, 2014.
- 9. TMI Station's Third Six Month Status Report for the Implementation of FLEX, dated August 28, 2014.
Page 10 of 29
9 Attachments 1A Sequence of Events Timeline Earthquake or Tornado@ 100% power 1B Sequence of Events Timeline External Flood @ 100% power 1C Sequence of Events Timeline Extreme Cold, Snow and Ice @ 100% power 2A 1E-919-21-001, draft, FLEX Diesel Generator and Fuel Oil System 28 1E-919-21-002, draft, FLEX Electrical Distribution 2C 1E-919-21-003, draft, FLEX Feedwater System 20 1E-919-21-004, draft, FLEX RCS & SFP Makeup System 2E 1E-919-21-005, draft, Long Term Water Supply Page 11 of 29
Attachment 1A - Sequence of Events Timeline Earthquake or Tornado@ 100°/o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
Y/N i 1 0 Earthquake or tornado Causes LOOP and NA damages unprotected equipment.
All control rods are inserted and the reactor is shutdown.
2 0 Emergency Diesel Generators fail to energize ES NA Failures per NE! 12-06 buses. I 3 < .01 EFW actuated: Steam driven pump (EF-P-1) and N Automatic plant response.
EFW Control valves (EF-V-30A & B) supply feedwater. MSSV & ADV control OTSG pressure.
4 < .02 EOP initiated. NA 5 < 0.05 RCS Letdown is automatically isolated on high ! N Automatic plant response.
temperature (MU-V-3 closes).
6 < 0.08 Control Room operators throttle ADV to stabilize N OTSG pressure and RCS temperature. Adequate core cooling is provided through RCS natural circulation and heat removal through the OTSG.
7 < 0.08 Control Room operators attempt to start and load N SBO Diesel Generator.
8 < 0.10 Control Room operator closes RCP Controlled N Contains RCS losses within Bleed Off Isolation Valve (MU-V-26). the Reactor Bldg.
9 < 0.17 SBO Diesel generator is not functional. N Failure per NEI 12-06.
10 0.25 Operator initiates E-plan. If needed, satellite N phones are used for offsite notifications &
communication.
11 0.25 Operators open main condenser vacuum breaker N This is a pre-condition to (VA-V-8) and valves to vent Main Generator H2 to reduce DC loads.
atmosphere.
12 0.25 Control Room operator secures DC powered FW N DC Load shedding pump turbine lube oil pumps (LO-P-9A & B).
13 0.5 Operator opens doors to inverter and battery y Maintain acceptable rooms. temperature for FLEX equipment.
Page 12of29
Attachment 1A - Sequence of Events Timeline Earthquake or Tornado @ 1OO°!o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
YIN 14 0.5 Operator de-energizes instrument systems not N DC Load shedding.
required for FLEX. I I
15 < 0.75 Operator lines up C02 purge for main generator. N Minimize risk of main generator fire.
16 < 0.75 If earthquake or tornado occurs, then operator y Minimize loss of closes CO-V-8, CO-V-108 and CO-V-24. condensate.
I If both CO-T-1 A and CO-T-1 B are damaged, then operator closes CO-V-10B and opens DW-V-35 to line up DW-T-2 to EF-P-1.
17 < 1.0 Operators have ensured fire service pumps (FS- N Mitigates the effects of non P-1 and FS-P-3) have been secured, if required .. seismic piping failures in I Class I buildings.
18 1.0 Control room operator secures Main Turbine Lube N DC load shedding.
Oil Pump LO-P-6.
19 1.5 Operator lines up FLEX Diesel Generator. y Pre-condition to maintain vital AC power and restore RCS makeup.
20 < 2.0 If battery chargers have not been re-energized, y DC load shedding is then Control room operator secures Main complete.
Generator Seal Oil Pump (GN-P-2).
21 2.0 Operator props open doors for initial intermediate N building ventilation.
22 2.0 Operator lines up FLEX RCS Makeup Pump from y Pre-condition to maintain BWST or Spent Fuel Pool to RCS. vital AC power and restore RCS makeup.
23 2.0 Operator takes local control of MS-V-6 (EF-P-1 y Bottled air system will last steam supply), EF-V-30A & EF-V-30B (EFW Flow at least 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, and then Control Valves) and MS-V-4A & MS-V-4B local manual control is (Atmospheric Dump Valves). required.
24 2.25 Operator strips loads from 1P & 1S 480V Buses, y Pre-condition to maintain and 1A & 1B ES MCC to prepare to load FLEX vital AC power and restore diesel generator. RCS makeup.
25 2.5 Operator starts FLEX Diesel Generator, energizes y Pre-condition to maintain FLEX MCC and closes breakers to energize 1P- vital AC power and restore 1S 480V cross tie bus. RCS makeup.
Page 13 of 29
Attachment 1A - Sequence of Events Timeline Earthquake or Tornado @ 1OOo/o power
- ELAP Action Time I Remarks/
Time Constraint I Applicability (HR)
Y/N 26 2.58 Operator closes breakers to energize 1 P 480V y Pre-condition to maintain Bus, 1S 480V Bus, 1A ES MCC and 1B ES MCC. vital AC power and restore 1
RCS makeup.
27 2.75 Operator closes breakers for selected loads on 1A y Pre-condition to maintain and 1B ES MCC: vital AC power and restore RCS makeup.
Battery Chargers AC Power to Inverters & Vital Instruments FLEX RCS Makeup Pumps Emergency Lighting 28 3.0 Operator starts FLEX RCS Makeup Pump (A or B) y Restore makeup within 4 to restore RCS inventory and increase RCS boron hours to prevent interruption concentration. 1 of core cooling.
29 3.5 Operator opens service bldg and turbine bldg N machine shop roll up doors and aux boiler roll up II door.
30 4.0 Operator connects hose from DF-V-41 to pipe in N Required for continued DGB, connects hose to fuel oil pipe in TB, routes operation of FX-Y-1A or B.
hose to FLEX DG Fuel Oil Tank (FX-T-3), and routes hose from FX-P-7 discharge to FX-T-2.
31 4.0 Operator strips loads on 1A ESV MCC & 1A N Pre-condition to isolate Radwaste MCC and installs jumper between 1A RCP controlled bleed off ESV MCC and 1A Radwaste MCC. flow.
32 4.0 Operator starts DF-P-1 C or DF-P-1 D, as needed, y Required for continued to maintain level in FX-T-3. operation of FX-Y-1A or B.
Pre-staged fuel supply will last 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> at full load.
33 4.5 Operator energizes 1A ESV MCC and 1A N Isolate RCP controlled Radwaste MCC, and Closes CBO Isolation Valves bleed off flow to minimize MU-V-33A, MU-V-338, MU-V-33C and MU-V- RCS loss rate.
330.
34 5.0 When pressurizer level reaches 100 inches, N operator throttles open MS-V-4A & B to initiate a cooldown and controls pressurizer level at 100 inches.
Cooldown rate will be approximately 30 F/HR.
Page 14 of 29
Attachment 1A - Sequence of Events Timeline Earthquake or Tornado @ 1OOo/o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
Y/N 35 5.0 Operator initiates temporary ventilation in Control N Bldg, IB and Turbine Bldg.
36 7.0 Operator strips loads on 1C ESV MCC, energizes N Contingency action.
1C ESV MCC, and closes breakers for CF-V-1A and CF-V-1 B.
When a reliable Pressurizer steam bubble is established or If RCS pressure drops below 300 psig, then CLOSE CF-V-1A & CF-V-1B.
37 7 to 8 Operator transfers a pressurizer heater group N . Hydraulic control of RCS (RC-HTR-GRP- 8 or 9) to the emergency power I pressure can be used if I I
supply and energizes heaters. required.
38 8.0 Operator connects hose from FX-P-2A & B pump N This is a pre-condition to discharge to FLEX feedwater header, connects use backup feedwater power cable to FX-P-2A or B starter, opens FX-V- capability.
203, FX-V-205, EF-V-67A and EF-V-67B.
39 8 to 11 Transfer portable diesel-driven pump (FX-P-3A or y For a tornado, minimum FX-P-3B) from FLEX storage facility (FSF) to road condensate supply would next to the river, route suction hose into river, and last greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
route discharge hose to CO-T-1 B or hotwell. I The minimum supply is greater for an earthquake.
40 < 10.0 OTSG Pressure is now less than 200 psig. N Design objective is to be Backup feedwater capability is enabled. If backup able to establish a backup feedwater is required, operator starts FX-P-2A or with 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
Band throttles opens FX-V-206A and FX-V-206B to control OTSG level (all action TB 322 north).
41 10.0 RCS cooldown is complete. N
- lncore temperature 400F
- OTSG A & B Pressure 150 psig
- RCS Pressure 400 psig Operator begins raising pressurizer level to > 300 inches 42 12.0 Operator opens SF-V-88, connects hose from N Spent fuel pool boiling FLEX feedwater header to the FLEX primary low occurs after 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.
pressure header, monitors SF pool level and throttles FX-V-101 open as needed to maintain SFP level.
Page 15 of 29
Attachment 1A - Sequence of Events Timeline Earthquake or Tornado @ 1OOo/o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
Y/N 43 15.0 Operator lines up spent fuel pool vent path N Spent fuel pool boiling (opening doors through U2 fuel pool to occurs after 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.
atmosphere).
44 24.0 SNRC (Regional Response Center) resources N On site fuel supply is begin arriving on site. sufficient for greater than 2 SNRC Equipment will be used to maintain a weeks.
reliable condensate supply and to address longer If BWST is damaged by term needs for fuel oil or borated water. tornado, then a borated water supply will be required.
Page 16 of 29
Attachment 1B - Sequence of Events Timeline External Flood @ 100°/o power
- ELAP Action Time Remarks/
Time (only selected actions in AOP-002 listed) Constraint Applicability (HR)
Y/N 1 -36 Forecast indicates river level could exceed the height of NA Plant @ 100% power.
the dike within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. Emergency procedure OP-TM-AOP-002 "Flood" initiated.
2 -35 to Operators maximize condensate tank Note 1 (CO-T-1 A & CO-T-1 B) and demineralized water tank
-12 (DW-T-2) inventorv.
3 -30 Operators install drain plugs, close drain valves and Note 1 inflate seals for AB & FHB Missile shield doors.
4 - 30 to - Operator connects hose from DF-V-41 to pipe in DGB, Note 1 DF-P-1C can fill FX-T-2 in 16 connects hose to fuel oil pipe in TB, and routes hose to approx. 14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br />.
FLEX DG Fuel Oil Tank (FX-T-2).
Operator starts DF-P-1C and initiates fill of FX-T-2.
5 - 30 to Maintenance installs flood barriers and stages, Note 1 12 consumables within the flood protected area.
6 - 22 to - Maintenance installs U2 flood barriers and stages, Note 1 2 consumables within the flood protected area.
7 - 20 Plant shutdown and cool-down initiated. y 8 - 19 to Vent the main generator hydrogen and purge with C02. N
- 12 9 -18 Reactor is shutdown. y 10 -16 RC-P-1 C and RC-P-1 D shutdown and cooldown initiated N 11 -13 RCS cooldown terminated N
- RCS temperature at 375F
- RCS pressure 400 psig
- Pressurizer level 200 to 220 inches
- CF-V-1A & B closed
- MU-V-33C & D closed
- OTSG pressure A & B at 165 psig
- OTSG Level A & B at 97 to 99 % op ranqe 12 -10 RCS boron concentration exceeds cold shutdown boron N concentration requirement.
13 -9 to -8 Operator transfers a pressurizer heater group Note 1 (RC-HTR-GRP- 8 or 9) to the ES power supply.
-6 Operator connects hose from FX-P-2A & B pump Note 1 discharge to FLEX feedwater header, connects power 14 cable to FX-P-2A or B starter, opens FX-V-203, FX-V-205, EF-V-67A and EF-V-678.
Page 17of29
Attachment 1B - Sequence of Events Timeline External Flood @ 100°/o power
- ELAP Action Time Remarks/
Time (only selected actions in AOP-002 listed) Constraint Applicability (HR)
YIN 15 -4 Operator lines up FX-P-1A & B path from BWST to RCS. Note 1 Operator connects hose from FLEX feedwater header to the FLEX primary low pressure header, and lines up FLEX makeup to the SF pool.
16 -3 Operator connects power cable to FX-P-5A or B, hose Note 1 from FX-P-5A & B discharge to FX-T-3 and FX-P-7 discharge to FX-T-2.
17 -2 Operator opens breakers for BWST tunnel sump pumps Note 1 and closes WDL-V-612 18 -1 Operator strips unprotected DC circuits from DC system Note 1 Prevents loss of battery (OP-TM-734-903 & 904). capacity.
19 0 River level exceeds the height of the dike. NA Failures per NEI 12-06.
LOOP occurs and Emergency Diesel Generators tail to energize ES buses.
20 0 EFW actuated: Steam driven pump (EF-P-1) starts and NA Automatic plant response.
EFW Control valves (EF-V-30A & B) are available to supply feedwater. RCS hot leg and cold leg temperatures diverge. OTSG pressure is dropping slowly.
21 <.02 EOP initiated. NA 22 < 0.05 Letdown isolates (MU-V-3) automatically on high NA Automatic plant response.
temperature.
23 < 0.08 Control Room operators throttle ADV to reduce OTSG N pressure, maintain OTSG level with EFW control valves, and stabilize RCS temperature. Adequate core cooling is provided through RCS natural circulation and heat removal through the OTSG. RCS conditions follow:
- RCS temperature at 400F
- RCS pressure 425 psig
- Pressurizer level 200 to 220 inches
- OTSG pressure A & B at 150 psig
- OTSG Level A & B is at "flooded nozzle" (97 to 99 % operatinq ranqe) 24 < 0.08 Control Room operators attempt to start and load SBO N Diesel Generator.
25 < 0.10 Control Room operator closes RCP Controlled Bleed Off N Contain RCS losses Isolation Valve (MU-V-26). within Reactor Bldg.
Page 18 of29
Attachment 1B - Sequence of Events Timeline External Flood @ 1OOo/o power
- ELAP Action Time Remarks/
Time (only selected actions in AOP-002 listed) Constraint Applicability (HR)
YIN 26 < 0.17 Control room operators recognize SBO Diesel generator N Failure per NEI 12-06.
is not functional.
27 0.25 Operator performs E-plan offsite notifications & N communication using satellite phones.
28 < 0.25 Operator close FS-V-256 & FS-V-257 to terminate N IA-P-1 A & B cooling water flow into IB sump.
29 < 0.5 Operator lines up FLEX Diesel Generator. y Pre-condition to maintain vital AC power and restore RCS makeup.
30 0.5 Operator opens doors to inverter and battery rooms for N Maintain acceptable FLEX ventilation. equipment cooling.
31 .75 Operator strips loads from 1P & 1S 480V Buses, and 1A y Pre-condition to maintain
& 1BES MCC to prepare to load FLEX diesel generator. vital AC power and restore RCS makeup.
32 < 1.0 Operator starts FLEX Diesel Generator, energizes FLEX y Pre-condition to maintain Distribution Panel and closes breakers to energize 1P- vital AC power and 1S 480V cross tie bus. restore RCS makeup.
33 1.0 Operator closes breakers to energize 1P 480V Bus, 1S y Pre-condition to maintain 480V Bus, 1A ES MCC and 1B ES MCC. vital AC power and restore RCS makeup.
34 1.25 Operator closes breakers for selected loads on A and B y Pre-condition to maintain 480V ES Bus: vital AC power and
- Battery Chargers restore RCS makeup.
- AC Power to Inverters & Vital Instruments
- Pressurizer heater group 35 1.5 Operator starts FLEX RCS Makeup Pump (A or B) and y Objective to restore throttles FX-V-103A (B) and slowly raises pressurizer makeup with 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> is level above 300 inches. conservative.
36 2.0 If backup feedwater is required, then operator starts N FX-P-2A or Band throttles open FX-V-206A and FX-V-206B to control OTSG level.
37 2.0 Operator takes local control of MS-V-6 (EF-P-1 steam y Bottled air system will last supply), EF-V-30A & EF-V-30B (EFW Flow Control at least 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, and then Valves) and MS-V-4A & MS-V-4B (Atmospheric Dump manual control is Valves). required.
Page 19 of 29
Attachment 1 B - Sequence of Events Timeline External Flood @ 100°/o power
- ELAP Action Time Remarks/
Time (only selected actions in AOP-002 listed) Constraint Applicability (HR)
Y/N 38 2.5 Operator strips loads on 1A ESV MCC and installs N jumper between 1A ESV MCC and 1A Radwaste MCC.
39 3.0 Operator energizes 1A ESV MCC and 1A Radwaste N MCC, and Closes CBO Isolation Valves MU-V-33A and MU-V-338.
40 3.5 Operator use FX-V-8 to gravity drain fuel oil from FX-T-2 y Required for continued to maintain level in FX-T-3. operation of FX-Y-1A or
- 8. Pre-staged fuel supply will last 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> at full load.
41 4.0 Operator sets up and starts temporary ventilation in CB, N 18 and TB.
42 15.0 Operator lines up spent fuel pool vent path N Spent fuel pool boiling (opening doors through U2 fuel pool to atmosphere}. occurs after 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.
43 24.0 SNRC (Regional Response Center) resources available N
... limited capability to transport any resources until 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> due to water level on site.
44 > 24 Operator throttles open FX-V-101 as needed to maintain N Spent fuel pool boiling SFP level. occurs after 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.
45 96 Transfer portable diesel-driven pump (FX-P-3A or FX-P- N Minimum condensate
- 38) from temporary offsite storage to road next to the supply would last greater river, route suction hose into river, and route discharge than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> after water hose to CO-T-18. recedes (at 72 hrs).
NOTE 1: In the event of a flood, additional resources are applied to ensure the proactive actions can be completed within the described timeline.
Page 20 of 29
Attachment 1C - Sequence of Events Timeline Extreme Cold, Snow and Ice @ 1OOo/o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
Y/N
-8 Weather predicts extreme cold conditions. NA Staff augmentation is initiated.
-4 Staff augmentation is complete. NA I 1 0 Extreme cold, snow or ice causes LOOP. NA All control rods are inserted and the reactor is shutdown.
2 0 Emergency Diesel Generators fail to energize ES NA Failures per NEI 12-06.
buses.
3 < .01 EFW actuated: Steam driven pump (EF-P-1) and N Automatic plant response.
EFW Control valves (EF-V-30A & B) supply feedwater. MSSV & ADV control OTSG pressure.
4 <.02 EOP initiated. NA 5 < 0.05 RCS Letdown is automatically isolated on high N Automatic plant response. I temperature (MU-V-3 closes). I 6 < 0.08 Control Room operators throttle ADV to stabilize N OTSG pressure and RCS temperature. Adequate core cooling is provided through RCS natural circulation and heat removal through the OTSG.
7 < 0.08 Control Room operators attempt to start and load N SBO Diesel Generator.
8 < 0.10 Control Room operator closes RCP Controlled N Contains RCS losses within Bleed Off Isolation Valve (MU-V-26). the Reactor Bldg.
9 < 0.17 SBO Diesel generator is not functional. N Failure per NEI 12-06.
10 0.25 Operator initiates E-plan. If needed, satellite N phones are used for offsite notifications &
communicatio n.
11 0.25 Operators open main condenser vacuum breaker N This is a pre-condition to (VA-V-8) and valves to vent Main Generator H2 to reduce DC loads.
atmosphere.
12 0.25 Control Room operator secures DC powered FW N DC Load shedding.
pump lube oil pumps (LO-P-9A and LO-P-9B).
Page 21of29
Attachment 1C - Sequence of Events Timeline Extreme Cold, Snow and Ice @ 100°/o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
Y/N 13 0.5 Operator opens doors to inverter and battery y rooms. I I
14 0.5 Operator de-energizes instrument systems not N DC Load shedding. I required for FLEX.
I 15 < 0.75 Operator lines up C02 purge for main generator. N Minimize risk of main---- 1 generator fire. ,
16 1.0 Control room operator secures Main Turbine Lube N DC load shedding Oil Pump LO-P-6.
17 1.5 Operator lines up FLEX Diesel Generator. y Pre-condition to maintain vital AC power and restore :
RCS makeup.
18 < 2.0 Control room operator secures Main Generator y DC load shedding is Seal Oil Pump (GN-P-2). I complete.
19 2.0 Operator lines up FLEX RCS Makeup Pump from y Pre-condition to restore BWSTto RCS. RCS makeup.
20 2.0 Operator takes local control of MS-V-6 (EF-P-1 y Bottled air system will last steam supply), EF-V-30A & EF-V-30B (EFW Flow at least 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, and then Control Valves) and MS-V-4A & MS-V-4B manual control is required.
(Atmospheric Dump Valves).
21 2.25 Operator strips loads from 1P & 1S 480V Buses, y Pre-condition to maintain and 1A & 1B ES MCC to prepare to load FLEX vital AC power and restore diesel generator. RCS makeup.
22 2.5 Operator starts FLEX Diesel Generator, energizes y Pre-condition to maintain FLEX MCC and closes breakers to energize 1P- vital AC power and restore 1S 480V cross tie bus. RCS makeup.
23 2.58 Operator closes breakers to energize 1P 480V y Pre-condition to maintain Bus, 1S 480V Bus, 1A ES MCC and 1B ES MCC. vital AC power and restore RCS makeup.
24 2.75 Operator closes breakers for selected loads on 1A y Pre-condition to maintain and 1B ES MCC: vital AC power and restore Battery Chargers RCS makeup.
AC Power to Inverters & Vital Instruments FLEX RCS Makeup Pumps Emergency Lighting Page 22 of 29
Attachment 1C - Sequence of Events Timeline Extreme Cold, Snow and Ice @ 1OOo/o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
Y/N 25 3.0 Operator starts FLEX RCS Makeup Pump (A or B) y Restore makeup within 4 to restore RCS inventory and increase RCS boron hours to prevent interruption concentration. of core cooling.
26 4.0 Operator connects hose from DF-V-41 to pipe in N Pre-condition to maintain DGB, connects hose to fuel oil pipe in TB, routes fuel supply to FX-Y-1A or B.
hose to FLEX DG Fuel Oil Tank (FX-T-3) and connects hose from FX-P-7 to FX-T-2.
27 4.0 Operator strips loads on 1A ESV MCC & 1A N Radwaste MCC and installs jumper between 1A ESV MCC and 1A Radwaste MCC. Operator ensures BWST heat trace is energized.
28 4.0 Operator starts DF-P-1 C or DF-P-1 D, as needed, y Required for continued to maintain level in FX-T-3. operation of FX-Y-1A or B.
Pre-staged fuel supply will last 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> at full load.
29 4.5 Operator energizes1A ESV MCC and 1A N Isolate RCP controlled Radwaste MCC, and Closes CBO Isolation Valves bleed off flow to minimize MU-V-33A, MU-V-338, MU-V-33C and MU-V- RCS loss rate.
330.
30 5.0 When pressurizer level reaches 100 inches, then N Pre-condition to enable operator throttles open MS-V-4A & B to initiate a back-op feedwater cooldown and controls pressurizer level at 100 capability.
inches. Cooldown rate will be less than 30 F/HR.
31 7.0 Operator strips loads on 1C ESV MCC, energizes N Contingency actions.
1C ESV MCC, and closes breakers for CF-V-1A and CF-V-18.
When a reliable steam bubble is established or if RCS pressure drops below 300 psig, then CLOSE CF-V-1A & CF-V-18.
32 7 to 8 Operator tr an sf ers a pressurizer heater group N Hydraulic control of RCS (RC-HTR-GRP- 8 or 9) to the emergency power pressure can be used if supply and energizes heaters. required.
33 8.0 Operator connects hose from FX-P-2A & B pump N Pre-condition to enable discharge to FLEX feedwater header, connects back-op feedwater power cable to FX-P-2A or B starter, opens FX-V- capability.
203, FX-V-205, EF-V-67A and EF-V-678.
Page 23 of 29
Attachment 1C - Sequence of Events Timeline Extreme Cold, Snow and Ice @ 1OOo/o power
- ELAP Action Time Remarks/
Time Constraint Applicability (HR)
Y/N I
34 < 10.0 OTSG Pressure is now less than 200 psig. N The design objective is to Backup teedwater capability is enabled. If backup enable back-op feedwater feedwater is required, operator starts FX-P-2A or capability within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
Band throttles opens FX-V-206A and FX-V-206B to control OTSG level (all action TB 322 north).
35 10.0 RCS cooldown is complete. N
- lncore temperature 400F
- OTSG A & B Pressure 150 psig
- RCS Pressure 400 psig Operator begins slowly raising pressurizer level to above 300 inches. I 36 12.0 Operator connects a hose from main steam drain I N line to piping connected to condensate tank B and 1 initiates tank heating.
37 12.0 BWST immersion heater 1A is energized from 1A N ESF MCC. I I
38 12.0 Operator opens SF-V-88, connects hose from N Spent fuel pool boiling FLEX feedwater header to the FLEX primary low occurs after 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.
pressure header, monitors SF pool level and throttles FX-V-1O1 open as needed to maintain SFP level.
39 15.0 Operator lines up spent fuel pool vent path N Spent fuel pool boiling (opening doors through U2 fuel pool to occurs after 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.
atmosphere).
40 24.0 SNRC (Regional Response Center) resources N begin arriving on site.
SNRC Equipment will be used to maintain a reliable condensate supply and to address longer term needs for fuel oil or borated water.
41 48 Transfer hose and portable diesel-driven pump N Minimum condensate (FX-P-3A or FX-P-3B) from FLEX storage facility supply would last greater (FSF) to road next to the river, route suction hose than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
into river, and route discharge hose to CO-T-1 B.
Page 24 of 29
Attachment 2A 1 E-919-21-001. draft. FLEX Diesel Generator and Fuel Oil Svstem REVISIONS REV I ZONE D~PTION FUEL OIL CONTAINER FX-HOSE- Y OUTSIDE TURBINE (PHASE 3) 1--~~~~~~~~~~~~~~~~~~~~~~~~~
- I VENT BUILDING CONTROL BUILDING ROOF VENT I
VENT 2" VENT FX-V10 EXHAUST 3*
/~=~i1E~~ I rvU1n.
VI 1
"\
\ ~
- SILENCER I ... I I 8"\I I
~-~
I I
~-1. ----- FX - V15 I &*'3f t!f.#
"'~
I IGENERATOR I I I GENERATOR I
I I
DIESEL GENERATOR I I COMPRESSED AIR FITIING FX-Y-1A 3*
I I
1 FX-HOSE-Y-X1 5 SECT. OF FX-HOSE-Y " - -
--1 I
I FX-V11B I
I I
I I
~ I FX-V10 5 SECT. OF FX-HOSE-Y I FX-V7 FX-HOSE-Y-Xl I I 11* I I I fl, I FX-V2 FX- Pl- 1004 I FX-T3-FILL I I 11*
5 SECT. OF FX- HOSE-Y~FX-Ll-1002B u I I FX T?
5000 FUEL GAL OIL I
II I
I I
S---1
,-- -1 rf\-r-.Jo ---
- - -- I
...'..J-------1 I EL 322'-0" I
----------- ~ -
FX-HOSE-Y I I I I !
I FX-U-1002A ( U I I
.JI I I ,. I
./
TO Sit I I DF-T-2Bs-r*_
DF-V40 -
,.;_i-f DF-V411 ( ~ 1FX-V1 1
... I 1
I I I I I
I ,--
I '
L ________FX-HOSE-Y-X1 FUEL OIL I FO-V81 TRANSFER PUMPS i r ___ 11E.-~,-ti. ! RETURN
- AUX BOILER TO 'T- __l!Ql!Jl!'Lei!'.L~: f0-V11A OR B J_LJ-N!xJ-J Df-V8Ci I FO-T-1 7 TAILPIPE ORAIN I
Df-P-1C !
I TURBINE BUILDING CAO fU MME:. 1£-1110::::21-<<n...Je!LDIU 01/05/15
- ,_ ___ Qt-~~ :
~
EL 305'-0" I I -.. I SUPPLY i !
FROM c;.J---J-c'_j
,..fl--NlxJ-J DF-VBD FLEX OVERVIEW OF-T-1 Df-P-1D INTERMEDIATE I lwwww ** I DIESEL GENERATOR & FUEL OIL DIESEL BUILDING I TMI I'~ ~~._;19-2~-001 15H.NA--1~
GEN. BLDG. iSCALE : NbTlU ~*
IWA. NO.
"' ~ I AEJl:MJCE$
IUU.
Page 25of29
Attachment 2E 1 E-919-21-005, draft, Long term water supply I I REV I ZONE I REVISIONS DESCRIPTioN I
DIKE WEST OF NOB
{306 ELEV.)
/ 1f FX-HOSE-f-X2'\ ~ *- 5 SECT. Of FX-Hos:::
MAIN STEAM i'
.'\ FX-V301 5 SECT. Of FX-HOSE- X \
3/4"
- MS-V76
___---1~1 fX-HOSE-X FX-V302l J
lfX-V303 T
~I ~
! \ \
..L
~-HOSE-G
- /FX- HOSE-F- X3 1 r T _ ______ -, * +,:f-V17 I 1-2-lXJ- J_ - - -S EfW PUMP IN I CO-T-18 I CO-V176 RECIRC.
FX-HOSE-H I I f¥I 12*
WATER I I-~ - - SEE OWG. lE- 919-21-003 lREATMENT SKID L - - - - - - - - --' C0-V108 (PHASE 3)
OUT 13 SECT. Of FX- HOSE-X r---,
I EX-T- 1 I NOTE 1 I I 'I 16 SECT. Of FX-HOSE-X---
8" L - 1~--
6" V9 ---
TB322 UNIT 1 ISPH r---0--
1 IN t_;--------~
MOBILE I HOlWELl I BORATION I I N.C.
SKID 95* ~ 912*
MAIN STEAM ~ ~ - -l><l-- -- ~ - -f'l-J-'- - - Sff OWG. IE- 919-2HIOl (PHASE 3)
MS- V3A MS-Vl2A I - - - - - - - - ICO-V8 _J EL 308 I LJFX-HTR-2 OUT L;;?--=-D_J TB 292 FX-CABLE-G2 FX-HTR- 1A/10 _,:::..-----
FX-HOSE-F1A I r-=l STARTER
/
~ __ _
0---\E)lf--"-**H TO AB WEST WALL SEE OWG lE-919-21-~4..,,,_,,..., 08/19/14 11 480V FX-Y-3 FX- P- 4
- I EL. 305 DIESEL GEN. lHIS IS A a>MPUTtR ~
CENERAlED DRA'MMC DO NOT RE\llSE IT WANUAll.Y ~
NOTES: 'lllAAIC~'I" FLEX OVERVIEW MIN. WATER V'------"-"'--"--"-""-'"--"'-"--"--"'
LEVEL 272' I - EL*-26B ___ ::J L_l=L_r_-=p===~~~u'
- 1. REMOVE 6" HANO HOLE COVER TO PlACE HOSE IN TANK. LONG TERM WATER SUPPLY TMI FX-P-6A !Cl.I ~Ml.
~
Page 29 of 29
Attachment 20 1E-919-21-004, draft, FLEX RCS and SFP Makeup System RE\/lSIONS REV I ZONE DESCRIPTION BWST r------------------1 WEST WALL I OF INTER. I REACTOR
- SH SI I BUILDING
- 237,000 GALLONS : I BUILDING
- I l l l
1 I
AVAILABLE ABOVE 324' ELEV. @
MIN LEVEL OF 56 rT.
l lI RB VENT PATH cb
- I 12
-j f-E--M------ ~I LR-V2 PENETl
- 415 I
- I l I d
IB-PEN-1 6"
- :..-, 11r--*+-P_E _N_.;1~1 I
[.. ____________ , ___ J ,.
l I I 24" 14" r----*------"\:Y C1--!'!'.'_J l -
I I- !L-----i.1:-r--------J~---------. I
- 1 LR-V64 112*
SH SI LR-V3
- 416
~*
j r~lr--&---i I : I OH-VSB DH-P-18 OH-C-19 OH-V19B J t I t WOL-V22~ :: L_
iI I 14" 1- rt-----
10* { I I ~-----ixr-------------------.L--------------,-: ---~-v4;---r-..
.T. 10*
I 10*
- CORE fl.ODO NozzLE B WOL-T-1C ' lzYz* :
I L---- ------"\:Y - - -
- DH-V19A l r---H----"
I I
TYPICALLY MORE : DH-VSA DH-P-1A OH-C-1A I Q~WOL-V37 :18*
THAN 50,000 I : DH-V2DB GALLONS ABOVE L____ :I ------, I 2200 PPMB I 00 I
I l SPENT FUEL l3* l 1o* '.k I CORE fl.ODO r- _:~~:~_A_~~-~---., 346' ElEV ~-,----;;f-~;---T-.. NOZZLE A I
IsF-V19 r-~.l :I :1330'ELE.\I r-T-r-:-------:.ft WOL-vsiY... WOL-V63.,.
°*WOL-V31 I
t --"\:Y 3" rt-.i 2'2*l
+'SF V20 r-----~-~--
' I
! +...
"'woL-V64
! I I
3* l 220,000 GALLONS 7+SF-V41 J I
- ?}2* +< - : SF-V38: AVAILABLE ABOVE ~
3* J OH-V52
-'-- ------'- - --~----M----'---H----" I WDL-P-6C *
(}7\WDL-V34 I
Q y,
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TURBINE BLDG. 'i' CA-V220 FX-HOSE-Z 3/4" I
I ru W: 1E-1t18-:Zt-ocM....JtO.OS 12/04/ 14 RECUllMEO WATER h-VIOJB~
I THIS IS A. COMPUlm GOl£RAlED DRAVl!NG DO Ex9 I
NOT RE\'ISE IT MAHUAU.Y FLEX OVERVIEW
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EL 322'-0" ~'
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Page 28 of 29
Attachment 2C 1 E-919-21-003, draft, FLEX Feedwater System REVISIONS REV I ZONE DESCRIPTION
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Page 27 of 29
Attachment 28 1E-919-21-002, draft, FLEX Electrical Distribution REVISIONS REV I ZONE DESCJZIPTION f'X-CABLE-02 I
1 "'
A i-:lt£-PNL-f'X-3A EE-R-FX-1\48 PHASE ROTATION RELAY TEMPORARY ~-v ' ,.e----------------1N 1ERtocKEo-- - * - - - - - - - ; _ ,
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Page 26of29