ML16112A368

Enclosure to Indian Point Nuclear Generating Unit Nos. 2 and 3 MSFHI Letter

ML16112A368
Person / Time
Site:	Indian Point
Issue date:	04/29/2016
From:	Richard Rivera-Lugo NRC/NRO/DSEA/RHMB
To:
References
Download: ML16112A368 (7)

Text

Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reference Design Basis Hazard Elevation Local Intense Precipitation Not included in DB Not included in DB Not included in DB Flood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1 Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Streams and Rivers Probable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD29 1.0 ft 13.7 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 PMF with Low Tide on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 PMF with High Tide on the Hudson River 12.4 ft NGVD29 1.0 ft 13.4 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD29 1.0 ft 14.5 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED 1

Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reference Design Basis Hazard Elevation Note 1: Reported values are rounded to the nearest one-tenth of a foot.

Seiche Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.5 Tsunami Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.6 Ice-Induced Flooding Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.7 Channel Migrations/Diversions Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.8 2

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reevaluated Hazard Elevation Reference Local Intense Precipitation 18.8 ft NGVD29 Minimal 18.8 ft NGVD29 Letter dated August 18, 2014, entitled "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. 2 and 3." ADAMS Accession No. ML16116A060 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29 Minimal 18.8 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-3 19.1 ft NGVD29 Minimal 19.1 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-1 18.3 ft NGVD29 Minimal 18.3 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-1 18.5 ft NGVD29 Minimal 18.5 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29 Minimal 18.6 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-3 18.8 ft NGVD29 Minimal 18.8 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-1 18.9 ft NGVD29 Minimal 18.9 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29 Minimal 19.2 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-1 19.0 ft NGVD29 Minimal 19.0 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-1 19.2 ft NGVD29 Minimal 19.2 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 1

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reevaluated Hazard Elevation Reference Streams and Rivers 16.5 ft NGVD29 2.1 ft 18.6 ft NGVD29 FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.

12/10/2015) Section 6.2.2 Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10%

Exceedance High Tide Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Storm Surge 18.9 ft NGVD29 2.9 ft 21.8 ft NGVD29 Letter dated April 5, 2016, entitled "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 150,000 cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS), Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - Values Reported in Open Water in River Outboard of River Bulkhead and U2 Intake Structure 18.9 ft NGVD29 2.1 ft 21.0 ft NGVD29 Combined 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 Building 18.9 ft NGVD29 4.7 ft 23.6 ft NGVD29 Combined 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 Buildings (Including West Sides of U2 and U3 Intake Structures) and River-facing (West) Side of U2 and U3 Turbine Buildings 2

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reevaluated Hazard Elevation Reference Storm Surge (continued) 18.9 ft NGVD29 0.0 ft 18.9 ft NGVD29 Letter dated April 5, 2016, entitled "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 150,000 cfs Flow in Hudson River Coincident with PMSS, Including AWL and CWGW - Values Reported at Location East of U2 and U3 Turbine Buildings Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this table Note 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.

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Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reference Design Basis Hazard Elevation Local Intense Precipitation Not included in DB Not included in DB Not included in DB Flood Hazard Reevaulation Report (FHRR) Revision 2, Section 4.1.1 Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Streams and Rivers Probable Maximum Flood (PMF) on the Hudson River 12.7 ft NGVD29 1.0 ft 13.7 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 PMF with Low Tide on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 PMF with High Tide on the Hudson River 12.4 ft NGVD29 1.0 ft 13.4 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 Storm Surge Probable Maximum Hurricane (PMH) with Spring High Tide on the Hudson River 13.5 ft NGVD29 1.0 ft 14.5 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 Standard Project Hurricane and Standard Project Flood on the Hudson River 13.0 ft NGVD29 1.0 ft 14.0 ft NGVD29 FHRR Revision 2, Section 2.3.1 and Table 4.1-1 REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED REDACTED 1

Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reference Design Basis Hazard Elevation Note 1: Reported values are rounded to the nearest one-tenth of a foot.

Seiche Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.5 Tsunami Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.6 Ice-Induced Flooding Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.7 Channel Migrations/Diversions Not included in DB Not included in DB Not included in DB FHRR Revision 2, Section 4.1.8 2

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reevaluated Hazard Elevation Reference Local Intense Precipitation 18.8 ft NGVD29 Minimal 18.8 ft NGVD29 Letter dated August 18, 2014, entitled "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. 2 and 3." ADAMS Accession No. ML16116A060 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-2 18.8 ft NGVD29 Minimal 18.8 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-3 19.1 ft NGVD29 Minimal 19.1 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-CB-1 18.3 ft NGVD29 Minimal 18.3 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-1 18.5 ft NGVD29 Minimal 18.5 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-2 18.6 ft NGVD29 Minimal 18.6 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-ABFP-3 18.8 ft NGVD29 Minimal 18.8 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-1 18.9 ft NGVD29 Minimal 18.9 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-PAB-2 19.2 ft NGVD29 Minimal 19.2 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-PAB-1 19.0 ft NGVD29 Minimal 19.0 ft NGVD29 Unit 2 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U2-ABFP-1 19.2 ft NGVD29 Minimal 19.2 ft NGVD29 Unit 3 Transformer Yard Doors Maximum Water-Surface Elevation - Door ID U3-CB-1 1

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reevaluated Hazard Elevation Reference Streams and Rivers 16.5 ft NGVD29 2.1 ft 18.6 ft NGVD29 FHRR Rev. 2 (12/9/2014) Sections 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.

12/10/2015) Section 6.2.2 Cool Season on Hudson River PMF with Snow Pack Coincident with 25-year Surge and 10%

Exceedance High Tide Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Storm Surge 18.9 ft NGVD29 2.9 ft 21.8 ft NGVD29 Letter dated April 5, 2016, entitled "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 150,000 cfs Flow in Hudson River Coincident with the Probable Maximum Storm Surge (PMSS), Including Antecedent Water Level (AWL) and Coincident Wind-Generated Waves (CWGW) - Values Reported in Open Water in River Outboard of River Bulkhead and U2 Intake Structure 18.9 ft NGVD29 2.1 ft 21.0 ft NGVD29 Combined 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 Building 18.9 ft NGVD29 4.7 ft 23.6 ft NGVD29 Combined 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 Buildings (Including West Sides of U2 and U3 Intake Structures) and River-facing (West) Side of U2 and U3 Turbine Buildings 2

Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/

Runup Reevaluated Hazard Elevation Reference Storm Surge (continued) 18.9 ft NGVD29 0.0 ft 18.9 ft NGVD29 Letter dated April 5, 2016, entitled "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 150,000 cfs Flow in Hudson River Coincident with PMSS, Including AWL and CWGW - Values Reported at Location East of U2 and U3 Turbine Buildings Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this table Note 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.

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