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{{#Wiki_filter:Indian Point Nuclear Generating Units 2 & 3 Table 1. Cu rrent Design Basis Flood Haza rds for Use i n the MSA MechanismStillwater Elevation Waves/ RunupReference Design Basis Hazard Elevation Local Intense PrecipitationNot included in DBNot included in DBNot included in DBFlood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1Failure of Dams and Onsite Water Control/Storage Structures
{{#Wiki_filter:Indian Point Nuclear Generating Units 2 & 3 Table 1. Cu rrent Design Basis Flood Haza rd s for Use i n the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Local Intense PrecipitationNot included in DBNot included in DBNot included in DBFlood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1Failure of Dams and Onsite Water Control/Storage Structures


Streams and RiversProbable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD291.0 ft13.7 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with Low Tide on the Hudson River 13.0 ft NGVD291.0 ft14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with High Tide on the  
St reams and Rivers Probable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD29 1.0 ft 13.7 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with Low Tide on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with High Tide on the  


Hudson River 12.4 ft NGVD291.0 ft13.4 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD291.0 ft14.5 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD291.0 ft14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1
Hudson River 12.4 ft NGVD29 1.0 ft 13.4 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD29 1.0 ft 14.5 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1


Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Desi gn Basis Flood Hazards for Use in the MSA MechanismStillwater Elevation Waves/ RunupReference Design Basis Hazard Elevation Note 1: Reported values are rounded to the nearest one-tenth of a foot.
Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Desi gn Basis Flood Hazards for Use in the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Note 1: Reported values are ro unded to the nearest one-tenth of a foot.
SeicheNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.5 TsunamiNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.6Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.7Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.8 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceLocal Intense Precipitation18.8 ft NGVD29Minimal18.8 ft NGVD29Letter da ted August 18, 2014"Revised FLO-2D Analysis to Address the Current LIP Regarding the Flooding Aspects of Recommendations 2.1 of the Near-Term Task Force Review of the Insights from the Fukushima Dai-ichi Accident Indian Point Units Nos.
SeicheNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.5 TsunamiNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.6Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.7Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.8 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceLocal Intense Precipitation18.8 ft NGVD29 Minimal18.8 ft NGVD29 Letter da ted August 18 , 2014"Revised FLO-2D Analysis to Address the Current LIP Regarding the Flooding As pects of Recommendations 2.1 of the Ne ar-Term Task Fo rce Re view of the Insights from the Fu kushima Da i-ichi Acciden t I ndian P oint Units Nos.
2 and 3."  ADAMS Accession No.Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29Minimal18.8 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-319.1 ft NGVD29Minimal19.1 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-118.3 ft NGVD29Minimal18.3 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-118.5 ft NGVD29Minimal18.5 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29Minimal18.6 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-318.8 ft NGVD29Minimal18.8 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-118.9 ft NGVD29Minimal18.9 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29Minimal19.2 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-119.0 ft NGVD29Minimal19.0 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-119.2 ft NGVD29Minimal19.2 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceStreams and Rivers 16.5 ft NGVD292.1 ft18.6 ft NGVD29FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.
2 and 3."  ADAMS Acc ession No.Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29Minimal 18.8 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-319.1 ft NGVD29 Minimal19.1 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-118.3 ft NGVD29 Minimal18.3 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-118.5 ft NGVD29 Minimal18.5 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29Minimal 18.6 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-318.8 ft NGVD29 Minimal18.8 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-118.9 ft NGVD29 Minimal18.9 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29Minimal 19.2 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-119.0 ft NGVD29 Minimal19.0 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-119.2 ft NGVD29 Minimal19.2 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceStreams and Rivers 16.5 ft NGVD29 2.1 ft 18.6 ft NGVD29FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.
12/10/2015) Section 6.2.2Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10% Exceedance High TideFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 18.9 ft NGVD292.9 ft21.8 ft NGVD29Letter dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard Information and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident" ADAMS Accession No.ML16104A041 Combined Event with 150,000cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS),
12/10/2015) Section 6.2.2Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10% Exceedance High TideFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 18.9 ft NGVD29 2.9 ft 21.8 ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Combined Event with 150,000cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS), Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - Va luesRe ported in Open Water in River Outboar d of River Bulkhead and U2 Intake Structure18.9 ft NGVD292.1 ft21.0 ft NGVD29 Combined E ven t wi t h 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported in Op en Are as of Powerblock Yard Betwe en U2 Intake Struc ture and U2 Tu rbine Building18.9 ft NGVD294.7 ft23.6 ft NGVD29 Combined Even t wi th 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported at River-facing Sides of Structures Betw een the River Bulkhead an d the Turb ine
Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - ValuesReported in Open Water in River Outboard of River Bulkhead and U2 Intake Structure18.9 ft NGVD292.1 ft21.0 ft NGVD29Combined Event with 150,000 cfs Flow in Hudson River Coincident with PMSS, Including AWL and CWGW - Values Reported in Open Areas of Powerblock Yard Between U2 Intake Structure and U2 Turbine Building18.9 ft NGVD294.7 ft23.6 ft NGVD29Combined Event with 150,000 cfs Flow in Hudson River Coincident with PMSS, Including AWL and CWGW - Values Reported at River-facing Sides of Structures Between the River Bulkhead and the Turbine


Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference Storm Surge 18.9 ft NGVD29. ft. ft NGVD29Letter dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard Information and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident" ADAMS Accession No.ML16104A041 Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.
Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference Storm Surge 18.9 ft NGVD29. ft. ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.
Note 1: The licensee is expected to develop flood event duration parameters and applicable flood associated effects to conduct the MSA. The staff will evaluate the flood event duration parameters (including warning time and period of inundation) and flood associated effects during its review of the MSA.
Note 1: The licensee is expected to develop floo d even t dura tion para meters and applicable f lood associated effects to conduct the MSA. The staff will evaluate the flood event duration p aramete rs (in cluding wa rning time and period of inundation) an d flo od a ssociated effects dur ing its re view of the MSA.
Indian Point Nuclear Generating Units 2 & 3 Table 1. Cu rrent Design Basis Flood Haza rds for Use i n the MSA MechanismStillwater Elevation Waves/ RunupReference Design Basis Hazard Elevation Local Intense PrecipitationNot included in DBNot included in DBNot included in DBFlood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1Failure of Dams and Onsite Water Control/Storage Structures
Indian Point Nuclear Generating Units 2 & 3 Table 1. Cu rrent Design Basis Flood Haza rd s for Use i n the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Local Intense PrecipitationNot included in DBNot included in DBNot included in DBFlood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1Failure of Dams and Onsite Water Control/Storage Structures


Streams and RiversProbable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD291.0 ft13.7 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with Low Tide on the Hudson River 13.0 ft NGVD291.0 ft14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with High Tide on the  
St reams and Rivers Probable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD29 1.0 ft 13.7 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with Low Tide on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with High Tide on the  


Hudson River 12.4 ft NGVD291.0 ft13.4 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD291.0 ft14.5 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD291.0 ft14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1
Hudson River 12.4 ft NGVD29 1.0 ft 13.4 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD29 1.0 ft 14.5 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1


Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Desi gn Basis Flood Hazards for Use in the MSA MechanismStillwater Elevation Waves/ RunupReference Design Basis Hazard Elevation Note 1: Reported values are rounded to the nearest one-tenth of a foot.
Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Desi gn Basis Flood Hazards for Use in the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Note 1: Reported values are ro unded to the nearest one-tenth of a foot.
SeicheNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.5 TsunamiNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.6Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.7Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.8 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceLocal Intense Precipitation18.8 ft NGVD29Minimal18.8 ft NGVD29Letter da ted August 18, 2014"Revised FLO-2D Analysis to Address the Current LIP Regarding the Flooding Aspects of Recommendations 2.1 of the Near-Term Task Force Review of the Insights from the Fukushima Dai-ichi Accident Indian Point Units Nos.
SeicheNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.5 TsunamiNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.6Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.7Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.8 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceLocal Intense Precipitation18.8 ft NGVD29 Minimal18.8 ft NGVD29 Letter da ted August 18 , 2014"Revised FLO-2D Analysis to Address the Current LIP Regarding the Flooding As pects of Recommendations 2.1 of the Ne ar-Term Task Fo rce Re view of the Insights from the Fu kushima Da i-ichi Acciden t I ndian P oint Units Nos.
2 and 3."  ADAMS Accession No.Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29Minimal18.8 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-319.1 ft NGVD29Minimal19.1 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-118.3 ft NGVD29Minimal18.3 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-118.5 ft NGVD29Minimal18.5 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29Minimal18.6 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-318.8 ft NGVD29Minimal18.8 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-118.9 ft NGVD29Minimal18.9 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29Minimal19.2 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-119.0 ft NGVD29Minimal19.0 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-119.2 ft NGVD29Minimal19.2 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceStreams and Rivers 16.5 ft NGVD292.1 ft18.6 ft NGVD29FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.
2 and 3."  ADAMS Acc ession No.Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29Minimal 18.8 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-319.1 ft NGVD29 Minimal19.1 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-118.3 ft NGVD29 Minimal18.3 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-118.5 ft NGVD29 Minimal18.5 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29Minimal 18.6 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-318.8 ft NGVD29 Minimal18.8 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-118.9 ft NGVD29 Minimal18.9 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29Minimal 19.2 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-119.0 ft NGVD29 Minimal19.0 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-119.2 ft NGVD29 Minimal19.2 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceStreams and Rivers 16.5 ft NGVD29 2.1 ft 18.6 ft NGVD29FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.
12/10/2015) Section 6.2.2Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10% Exceedance High TideFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 18.9 ft NGVD292.9 ft21.8 ft NGVD29Letter dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard Information and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident" ADAMS Accession No.ML16104A041 Combined Event with 150,000cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS),
12/10/2015) Section 6.2.2Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10% Exceedance High TideFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 18.9 ft NGVD29 2.9 ft 21.8 ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Combined Event with 150,000cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS), Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - Va luesRe ported in Open Water in River Outboar d of River Bulkhead and U2 Intake Structure18.9 ft NGVD292.1 ft21.0 ft NGVD29 Combined E ven t wi t h 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported in Op en Are as of Powerblock Yard Betwe en U2 Intake Struc ture and U2 Tu rbine Building18.9 ft NGVD294.7 ft23.6 ft NGVD29 Combined Even t wi th 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported at River-facing Sides of Structures Betw een the River Bulkhead an d the Turb ine
Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - ValuesReported in Open Water in River Outboard of River Bulkhead and U2 Intake Structure18.9 ft NGVD292.1 ft21.0 ft NGVD29Combined Event with 150,000 cfs Flow in Hudson River Coincident with PMSS, Including AWL and CWGW - Values Reported in Open Areas of Powerblock Yard Between U2 Intake Structure and U2 Turbine Building18.9 ft NGVD294.7 ft23.6 ft NGVD29Combined Event with 150,000 cfs Flow in Hudson River Coincident with PMSS, Including AWL and CWGW - Values Reported at River-facing Sides of Structures Between the River Bulkhead and the Turbine


Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference Storm Surge 18.9 ft NGVD29. ft. ft NGVD29Letter dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard Information and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident" ADAMS Accession No.ML16104A041 Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.
Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference Storm Surge 18.9 ft NGVD29. ft. ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.
Note 1: The licensee is expected to develop flood event duration parameters and applicable flood associated effects to conduct the MSA. The staff will evaluate the flood event duration parameters (including warning time and period of inundation) and flood associated effects during its review of the MSA.}}
Note 1: The licensee is expected to develop floo d even t dura tion para meters and applicable f lood associated effects to conduct the MSA. The staff will evaluate the flood event duration p aramete rs (in cluding wa rning time and period of inundation) an d flo od a ssociated effects dur ing its re view of the MSA.}}

Revision as of 11:56, 8 July 2018

Enclosure to Indian Point Nuclear Generating Unit Nos. 2 and 3 MSFHI Letter
ML16112A368
Person / Time
Site: Indian Point  Entergy icon.png
Issue date: 04/29/2016
From: Rivera-Lugo R F
NRC/NRO/DSEA/RHMB
To:
References
Download: ML16112A368 (7)
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Text

Indian Point Nuclear Generating Units 2 & 3 Table 1. Cu rrent Design Basis Flood Haza rd s for Use i n the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Local Intense PrecipitationNot included in DBNot included in DBNot included in DBFlood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1Failure of Dams and Onsite Water Control/Storage Structures

St reams and Rivers Probable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD29 1.0 ft 13.7 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with Low Tide on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with High Tide on the

Hudson River 12.4 ft NGVD29 1.0 ft 13.4 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD29 1.0 ft 14.5 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1

Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Desi gn Basis Flood Hazards for Use in the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Note 1: Reported values are ro unded to the nearest one-tenth of a foot.

SeicheNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.5 TsunamiNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.6Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.7Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.8 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceLocal Intense Precipitation18.8 ft NGVD29 Minimal18.8 ft NGVD29 Letter da ted August 18 , 2014"Revised FLO-2D Analysis to Address the Current LIP Regarding the Flooding As pects of Recommendations 2.1 of the Ne ar-Term Task Fo rce Re view of the Insights from the Fu kushima Da i-ichi Acciden t I ndian P oint Units Nos.

2 and 3." ADAMS Acc ession No.Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29Minimal 18.8 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-319.1 ft NGVD29 Minimal19.1 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-118.3 ft NGVD29 Minimal18.3 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-118.5 ft NGVD29 Minimal18.5 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29Minimal 18.6 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-318.8 ft NGVD29 Minimal18.8 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-118.9 ft NGVD29 Minimal18.9 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29Minimal 19.2 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-119.0 ft NGVD29 Minimal19.0 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-119.2 ft NGVD29 Minimal19.2 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceStreams and Rivers 16.5 ft NGVD29 2.1 ft 18.6 ft NGVD29FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.

12/10/2015) Section 6.2.2Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10% Exceedance High TideFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 18.9 ft NGVD29 2.9 ft 21.8 ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Combined Event with 150,000cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS), Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - Va luesRe ported in Open Water in River Outboar d of River Bulkhead and U2 Intake Structure18.9 ft NGVD292.1 ft21.0 ft NGVD29 Combined E ven t wi t h 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported in Op en Are as of Powerblock Yard Betwe en U2 Intake Struc ture and U2 Tu rbine Building18.9 ft NGVD294.7 ft23.6 ft NGVD29 Combined Even t wi th 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported at River-facing Sides of Structures Betw een the River Bulkhead an d the Turb ine

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference Storm Surge 18.9 ft NGVD29. ft. ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.

Note 1: The licensee is expected to develop floo d even t dura tion para meters and applicable f lood associated effects to conduct the MSA. The staff will evaluate the flood event duration p aramete rs (in cluding wa rning time and period of inundation) an d flo od a ssociated effects dur ing its re view of the MSA.

Indian Point Nuclear Generating Units 2 & 3 Table 1. Cu rrent Design Basis Flood Haza rd s for Use i n the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Local Intense PrecipitationNot included in DBNot included in DBNot included in DBFlood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1Failure of Dams and Onsite Water Control/Storage Structures

St reams and Rivers Probable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD29 1.0 ft 13.7 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with Low Tide on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1PMF with High Tide on the

Hudson River 12.4 ft NGVD29 1.0 ft 13.4 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD29 1.0 ft 14.5 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29FHRR Revision 2, Section 2.3.1 and Table 4.1-1

Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Desi gn Basis Flood Hazards for Use in the MSA MechanismStillwater Elevation Waves/ Runup Reference Design Basis Hazard Elevation Note 1: Reported values are ro unded to the nearest one-tenth of a foot.

SeicheNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.5 TsunamiNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.6Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.7Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Revision 2, Section 4.1.8 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceLocal Intense Precipitation18.8 ft NGVD29 Minimal18.8 ft NGVD29 Letter da ted August 18 , 2014"Revised FLO-2D Analysis to Address the Current LIP Regarding the Flooding As pects of Recommendations 2.1 of the Ne ar-Term Task Fo rce Re view of the Insights from the Fu kushima Da i-ichi Acciden t I ndian P oint Units Nos.

2 and 3." ADAMS Acc ession No.Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29Minimal 18.8 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-319.1 ft NGVD29 Minimal19.1 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-118.3 ft NGVD29 Minimal18.3 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-118.5 ft NGVD29 Minimal18.5 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29Minimal 18.6 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-318.8 ft NGVD29 Minimal18.8 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-118.9 ft NGVD29 Minimal18.9 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29Minimal 19.2 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-119.0 ft NGVD29 Minimal19.0 ft NGVD29Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-119.2 ft NGVD29 Minimal19.2 ft NGVD29Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceStreams and Rivers 16.5 ft NGVD29 2.1 ft 18.6 ft NGVD29FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.

12/10/2015) Section 6.2.2Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10% Exceedance High TideFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 18.9 ft NGVD29 2.9 ft 21.8 ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Combined Event with 150,000cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS), Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - Va luesRe ported in Open Water in River Outboar d of River Bulkhead and U2 Intake Structure18.9 ft NGVD292.1 ft21.0 ft NGVD29 Combined E ven t wi t h 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported in Op en Are as of Powerblock Yard Betwe en U2 Intake Struc ture and U2 Tu rbine Building18.9 ft NGVD294.7 ft23.6 ft NGVD29 Combined Even t wi th 150,000 cfs Flow in Hu dson River Coincident wi th PMSS, Including AWL and CWGW - Va lues Reported at River-facing Sides of Structures Betw een the River Bulkhead an d the Turb ine

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA MechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference Storm Surge 18.9 ft NGVD29. ft. ft NGVD29 Lette r dated April 5, 2016 "Entergy Supplement to Basis for Performance of the Mitigating Strategies Assessment with the Flood Hazard In formation and Report for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Da i-ichi Accident" ADAMS Accession No.ML16104A041 Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.

Note 1: The licensee is expected to develop floo d even t dura tion para meters and applicable f lood associated effects to conduct the MSA. The staff will evaluate the flood event duration p aramete rs (in cluding wa rning time and period of inundation) an d flo od a ssociated effects dur ing its re view of the MSA.

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