ML16112A368: Difference between revisions

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{{#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
{{#Wiki_filter:Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism                Stillwater        Waves/         Design Basis                   Reference Elevation          Runup              Hazard Elevation Local Intense Precipitation Not included     Not included       Not included     Flood Hazard Reevaulation Report in DB            in DB              in DB        (FHRR) Revision 2, Section 4.1.1 Streams and Rivers Probable Maximum Flood (PMF)        12.7 ft            1.0 ft            13.7 ft    FHRR Revision 2, Section 2.3.1 and on the Hudson River                NGVD29                              NGVD29                    Table 4.1-1 PMF with Low Tide on the            13.0 ft            1.0 ft            14.0 ft    FHRR Revision 2, Section 2.3.1 and Hudson River                        NGVD29                              NGVD29                    Table 4.1-1 PMF with High Tide on the            12.4 ft            1.0 ft            13.4 ft    FHRR Revision 2, Section 2.3.1 and Hudson River                        NGVD29                              NGVD29                    Table 4.1-1 Failure of Dams and Onsite Water Control/Storage Structures REDACTED                          REDACTED          REDACTED          REDACTED                  REDACTED Storm Surge Probable Maximum Hurricane          13.5 ft            1.0 ft            14.5 ft    FHRR Revision 2, Section 2.3.1 and (PMH) with Spring High Tide on      NGVD29                              NGVD29                    Table 4.1-1 the Hudson River Standard Project Hurricane and      13.0 ft            1.0 ft            14.0 ft    FHRR Revision 2, Section 2.3.1 and Standard Project Flood on the      NGVD29                              NGVD29                    Table 4.1-1 Hudson River REDACTED                          REDACTED          REDACTED          REDACTED                  REDACTED REDACTED                          REDACTED          REDACTED          REDACTED                  REDACTED 1


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
Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism                Stillwater          Waves/        Design Basis              Reference Elevation            Runup              Hazard Elevation Seiche Not included      Not included      Not included    FHRR Revision 2, Section 4.1.5 in DB              in DB              in DB Tsunami Not included      Not included      Not included    FHRR Revision 2, Section 4.1.6 in DB              in DB              in DB Ice-Induced Flooding Not included      Not included      Not included    FHRR Revision 2, Section 4.1.7 in DB              in DB              in DB Channel Migrations/Diversions Not included      Not included      Not included    FHRR Revision 2, Section 4.1.8 in DB              in DB              in DB Note 1: Reported values are rounded to the nearest one-tenth of a foot.
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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 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism            Stillwater        Waves/          Reevaluated                  Reference Elevation          Runup              Hazard Elevation Local Intense Precipitation Unit 2 Transformer Yard Doors      18.8 ft           Minimal            18.8 ft        Letter dated August 18, 2014, Maximum Water-Surface            NGVD29                              NGVD29       entitled "Revised FLO-2D Analysis Elevation - Door ID U2-ABFP-2                                                            to Address the Current LIP Regarding the Flooding Aspects of Recommendations 2.1 of the Near-Unit 2 Transformer Yard Doors      18.8 ft           Minimal            18.8 ft       Term Task Force Review of the Maximum Water-Surface            NGVD29                              NGVD29      Insights from the Fukushima Dai-ichi Elevation - Door ID U2-ABFP-3                                                      Accident Indian Point Units Nos. 2 and 3." ADAMS Accession Unit 2 Transformer Yard Doors      19.1 ft          Minimal            19.1 ft              No. ML16116A060 Maximum Water-Surface            NGVD29                              NGVD29 Elevation - Door ID U2-CB-1 Unit 2 Transformer Yard Doors      19.2 ft          Minimal            19.2 ft Maximum Water-Surface            NGVD29                              NGVD29 Elevation - Door ID U2-PAB-1 Unit 2 Transformer Yard Doors      19.0 ft          Minimal            19.0 ft Maximum Water-Surface            NGVD29                              NGVD29 Elevation - Door ID U2-ABFP-1 Unit 3 Transformer Yard Doors      18.3 ft          Minimal            18.3 ft Maximum Water-Surface            NGVD29                               NGVD29 Elevation - Door ID U3-ABFP-1 Unit 3 Transformer Yard Doors      18.5 ft           Minimal            18.5 ft Maximum Water-Surface            NGVD29                              NGVD29 Elevation - Door ID U3-ABFP-2 Unit 3 Transformer Yard Doors      18.6 ft          Minimal            18.6 ft Maximum Water-Surface            NGVD29                              NGVD29 Elevation - Door ID U3-ABFP-3 Unit 3 Transformer Yard Doors      18.8 ft          Minimal            18.8 ft Maximum Water-Surface            NGVD29                               NGVD29 Elevation - Door ID U3-PAB-1 Unit 3 Transformer Yard Doors      18.9 ft           Minimal            18.9 ft Maximum Water-Surface            NGVD29                              NGVD29 Elevation - Door ID U3-PAB-2 Unit 3 Transformer Yard Doors      19.2 ft          Minimal            19.2 ft Maximum Water-Surface            NGVD29                              NGVD29 Elevation - Door ID U3-CB-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.
Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism            Stillwater        Waves/         Reevaluated                   Reference Elevation           Runup              Hazard Elevation Streams and Rivers Cool Season on Hudson River        16.5 ft           2.1 ft           18.6 ft     FHRR Rev. 2 (12/9/2014) Sections PMF with Snow Pack Coincident    NGVD29                              NGVD29      3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.
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.
with 25-year Surge and 10%                                                                12/10/2015) Section 6.2.2 Exceedance High Tide Failure of Dams and Onsite Water Control/Storage Structures REDACTED                        REDACTED        REDACTED          REDACTED                    REDACTED Storm Surge Combined Event with 150,000 cfs    18.9 ft           2.9 ft             21.8 ft     Letter dated April 5, 2016, entitled Flow in Hudson River Coincident  NGVD29                              NGVD29        "Entergy Supplement to Basis for with the Probable Maximum                                                              Performance of the Mitigating Storm Surge (PMSS), Including                                                        Strategies Assessment with the Antecedent Water Level (AWL)                                                      Flood Hazard Information and Report and Coincident Wind-Generated                                                        for Recommendations 2.1 of the Waves (CWGW) - Values                                                                Near-Term Task Force Review of Reported in Open Water in River                                                    Insights from the Fukushima Dai-ichi Outboard of River Bulkhead and                                                          Accident ADAMS Accession U2 Intake Structure                                                                          No. ML16104A041 Combined Event with 150,000 cfs    18.9 ft           2.1 ft            21.0 ft Flow in Hudson River Coincident   NGVD29                              NGVD29 with PMSS, Including AWL and CWGW - Values Reported in Open Areas of Powerblock Yard Between U2 Intake Structure and U2 Turbine Building Combined Event with 150,000 cfs    18.9 ft           4.7 ft            23.6 ft Flow in Hudson River Coincident   NGVD29                              NGVD29 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
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.
Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism                Stillwater          Waves/         Reevaluated                  Reference Elevation            Runup              Hazard Elevation Storm Surge (continued)
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.
Combined Event with 150,000 cfs        18.9 ft             0.0 ft             18.9 ft     Letter dated April 5, 2016, entitled Flow in Hudson River Coincident      NGVD29                                NGVD29        "Entergy Supplement to Basis for with PMSS, Including AWL and                                                                Performance of the Mitigating CWGW - Values Reported at                                                                  Strategies Assessment with the Location East of U2 and U3                                                              Flood Hazard Information and Report Turbine Buildings                                                                          for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident ADAMS Accession No. ML16104A041 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.
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
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.
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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  
Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism                Stillwater        Waves/        Design Basis                  Reference Elevation          Runup              Hazard Elevation Local Intense Precipitation Not included      Not included      Not included      Flood Hazard Reevaulation Report in DB            in DB              in DB        (FHRR) Revision 2, Section 4.1.1 Streams and Rivers Probable Maximum Flood (PMF)         12.7 ft             1.0 ft           13.7 ft     FHRR Revision 2, Section 2.3.1 and on the Hudson River                NGVD29                              NGVD29                    Table 4.1-1 PMF with Low Tide on the             13.0 ft             1.0 ft           14.0 ft     FHRR Revision 2, Section 2.3.1 and Hudson River                        NGVD29                              NGVD29                    Table 4.1-1 PMF with High Tide on the            12.4 ft            1.0 ft            13.4 ft    FHRR Revision 2, Section 2.3.1 and Hudson River                        NGVD29                              NGVD29                    Table 4.1-1 Failure of Dams and Onsite Water Control/Storage Structures REDACTED                          REDACTED          REDACTED          REDACTED                  REDACTED Storm Surge Probable Maximum Hurricane          13.5 ft            1.0 ft            14.5 ft    FHRR Revision 2, Section 2.3.1 and (PMH) with Spring High Tide on     NGVD29                              NGVD29                    Table 4.1-1 the Hudson River Standard Project Hurricane and      13.0 ft            1.0 ft            14.0 ft    FHRR Revision 2, Section 2.3.1 and Standard Project Flood on the      NGVD29                              NGVD29                    Table 4.1-1 Hudson River REDACTED                          REDACTED          REDACTED          REDACTED                  REDACTED REDACTED                          REDACTED          REDACTED          REDACTED                  REDACTED 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 Design Basis Flood Hazards for Use in the MSA Mechanism                Stillwater          Waves/        Design Basis              Reference Elevation            Runup              Hazard Elevation Seiche Not included      Not included      Not included    FHRR Revision 2, Section 4.1.5 in DB              in DB              in DB Tsunami Not included      Not included      Not included    FHRR Revision 2, Section 4.1.6 in DB              in DB              in DB Ice-Induced Flooding Not included      Not included      Not included    FHRR Revision 2, Section 4.1.7 in DB              in DB              in DB Channel Migrations/Diversions Not included      Not included      Not included    FHRR Revision 2, Section 4.1.8 in DB              in DB              in DB Note 1: Reported values are rounded to the nearest one-tenth of a foot.
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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.
Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism            Stillwater        Waves/         Reevaluated                  Reference Elevation          Runup              Hazard Elevation Local Intense Precipitation Unit 2 Transformer Yard Doors      18.8 ft           Minimal            18.8 ft       Letter dated August 18, 2014, Maximum Water-Surface            NGVD29                              NGVD29      entitled "Revised FLO-2D Analysis Elevation - Door ID U2-ABFP-2                                                            to Address the Current LIP Regarding the Flooding Aspects of Recommendations 2.1 of the Near-Unit 2 Transformer Yard Doors      18.8 ft          Minimal            18.8 ft      Term Task Force Review of the Maximum Water-Surface            NGVD29                              NGVD29      Insights from the Fukushima Dai-ichi Elevation - Door ID U2-ABFP-3                                                      Accident Indian Point Units Nos. 2 and 3." ADAMS Accession Unit 2 Transformer Yard Doors     19.1 ft          Minimal            19.1 ft              No. ML16116A060 Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U2-CB-1 Unit 2 Transformer Yard Doors      19.2 ft           Minimal            19.2 ft Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U2-PAB-1 Unit 2 Transformer Yard Doors     19.0 ft          Minimal            19.0 ft Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U2-ABFP-1 Unit 3 Transformer Yard Doors      18.3 ft           Minimal            18.3 ft Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U3-ABFP-1 Unit 3 Transformer Yard Doors      18.5 ft           Minimal            18.5 ft Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U3-ABFP-2 Unit 3 Transformer Yard Doors      18.6 ft           Minimal            18.6 ft Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U3-ABFP-3 Unit 3 Transformer Yard Doors      18.8 ft           Minimal            18.8 ft Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U3-PAB-1 Unit 3 Transformer Yard Doors      18.9 ft           Minimal            18.9 ft Maximum Water-Surface             NGVD29                              NGVD29 Elevation - Door ID U3-PAB-2 Unit 3 Transformer Yard Doors      19.2 ft           Minimal            19.2 ft Maximum Water-Surface             NGVD29                               NGVD29 Elevation - Door ID U3-CB-1 1
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.
Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism            Stillwater        Waves/         Reevaluated                    Reference Elevation          Runup              Hazard Elevation Streams and Rivers Cool Season on Hudson River        16.5 ft            2.1 ft            18.6 ft    FHRR Rev. 2 (12/9/2014) Sections PMF with Snow Pack Coincident    NGVD29                              NGVD29      3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.
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.}}
with 25-year Surge and 10%                                                                12/10/2015) Section 6.2.2 Exceedance High Tide Failure of Dams and Onsite Water Control/Storage Structures REDACTED                        REDACTED        REDACTED          REDACTED                    REDACTED Storm Surge Combined Event with 150,000 cfs    18.9 ft           2.9 ft             21.8 ft     Letter dated April 5, 2016, entitled Flow in Hudson River Coincident  NGVD29                              NGVD29        "Entergy Supplement to Basis for with the Probable Maximum                                                              Performance of the Mitigating Storm Surge (PMSS), Including                                                        Strategies Assessment with the Antecedent Water Level (AWL)                                                      Flood Hazard Information and Report and Coincident Wind-Generated                                                        for Recommendations 2.1 of the Waves (CWGW) - Values                                                                Near-Term Task Force Review of Reported in Open Water in River                                                    Insights from the Fukushima Dai-ichi Outboard of River Bulkhead and                                                          Accident ADAMS Accession U2 Intake Structure                                                                          No. ML16104A041 Combined Event with 150,000 cfs    18.9 ft            2.1 ft            21.0 ft Flow in Hudson River Coincident  NGVD29                              NGVD29 with PMSS, Including AWL and CWGW - Values Reported in Open Areas of Powerblock Yard Between U2 Intake Structure and U2 Turbine Building Combined Event with 150,000 cfs    18.9 ft            4.7 ft            23.6 ft Flow in Hudson River Coincident  NGVD29                              NGVD29 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          Waves/          Reevaluated                  Reference Elevation            Runup              Hazard Elevation Storm Surge (continued)
Combined Event with 150,000 cfs        18.9 ft            0.0 ft            18.9 ft    Letter dated April 5, 2016, entitled Flow in Hudson River Coincident      NGVD29                                NGVD29        "Entergy Supplement to Basis for with PMSS, Including AWL and                                                                Performance of the Mitigating CWGW - Values Reported at                                                                  Strategies Assessment with the Location East of U2 and U3                                                              Flood Hazard Information and Report Turbine Buildings                                                                          for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident ADAMS Accession No. ML16104A041 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 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.
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Revision as of 20:45, 30 October 2019

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: Richard Rivera-Lugo
NRC/NRO/DSEA/RHMB
To:
References
Download: ML16112A368 (7)
v • d • e


Text

Indian Point Nuclear Generating Units 2 & 3 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Waves/ Design Basis Reference Elevation Runup Hazard Elevation Local Intense Precipitation Not included Not included Not included Flood Hazard Reevaulation Report in DB in DB in DB (FHRR) Revision 2, Section 4.1.1 Streams and Rivers Probable Maximum Flood (PMF) 12.7 ft 1.0 ft 13.7 ft FHRR Revision 2, Section 2.3.1 and on the Hudson River NGVD29 NGVD29 Table 4.1-1 PMF with Low Tide on the 13.0 ft 1.0 ft 14.0 ft FHRR Revision 2, Section 2.3.1 and Hudson River NGVD29 NGVD29 Table 4.1-1 PMF with High Tide on the 12.4 ft 1.0 ft 13.4 ft FHRR Revision 2, Section 2.3.1 and Hudson River NGVD29 NGVD29 Table 4.1-1 Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Storm Surge Probable Maximum Hurricane 13.5 ft 1.0 ft 14.5 ft FHRR Revision 2, Section 2.3.1 and (PMH) with Spring High Tide on NGVD29 NGVD29 Table 4.1-1 the Hudson River Standard Project Hurricane and 13.0 ft 1.0 ft 14.0 ft FHRR Revision 2, Section 2.3.1 and Standard Project Flood on the NGVD29 NGVD29 Table 4.1-1 Hudson River 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 Waves/ Design Basis Reference Elevation Runup Hazard Elevation Seiche Not included Not included Not included FHRR Revision 2, Section 4.1.5 in DB in DB in DB Tsunami Not included Not included Not included FHRR Revision 2, Section 4.1.6 in DB in DB in DB Ice-Induced Flooding Not included Not included Not included FHRR Revision 2, Section 4.1.7 in DB in DB in DB Channel Migrations/Diversions Not included Not included Not included FHRR Revision 2, Section 4.1.8 in DB in DB in DB Note 1: Reported values are rounded to the nearest one-tenth of a foot.

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Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Local Intense Precipitation Unit 2 Transformer Yard Doors 18.8 ft Minimal 18.8 ft Letter dated August 18, 2014, Maximum Water-Surface NGVD29 NGVD29 entitled "Revised FLO-2D Analysis Elevation - Door ID U2-ABFP-2 to Address the Current LIP Regarding the Flooding Aspects of Recommendations 2.1 of the Near-Unit 2 Transformer Yard Doors 18.8 ft Minimal 18.8 ft Term Task Force Review of the Maximum Water-Surface NGVD29 NGVD29 Insights from the Fukushima Dai-ichi Elevation - Door ID U2-ABFP-3 Accident Indian Point Units Nos. 2 and 3." ADAMS Accession Unit 2 Transformer Yard Doors 19.1 ft Minimal 19.1 ft No. ML16116A060 Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U2-CB-1 Unit 2 Transformer Yard Doors 19.2 ft Minimal 19.2 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U2-PAB-1 Unit 2 Transformer Yard Doors 19.0 ft Minimal 19.0 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U2-ABFP-1 Unit 3 Transformer Yard Doors 18.3 ft Minimal 18.3 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-ABFP-1 Unit 3 Transformer Yard Doors 18.5 ft Minimal 18.5 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-ABFP-2 Unit 3 Transformer Yard Doors 18.6 ft Minimal 18.6 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-ABFP-3 Unit 3 Transformer Yard Doors 18.8 ft Minimal 18.8 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-PAB-1 Unit 3 Transformer Yard Doors 18.9 ft Minimal 18.9 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-PAB-2 Unit 3 Transformer Yard Doors 19.2 ft Minimal 19.2 ft Maximum Water-Surface NGVD29 NGVD29 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 Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Streams and Rivers Cool Season on Hudson River 16.5 ft 2.1 ft 18.6 ft FHRR Rev. 2 (12/9/2014) Sections PMF with Snow Pack Coincident NGVD29 NGVD29 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.

with 25-year Surge and 10% 12/10/2015) Section 6.2.2 Exceedance High Tide Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Storm Surge Combined Event with 150,000 cfs 18.9 ft 2.9 ft 21.8 ft Letter dated April 5, 2016, entitled Flow in Hudson River Coincident NGVD29 NGVD29 "Entergy Supplement to Basis for with the Probable Maximum Performance of the Mitigating Storm Surge (PMSS), Including Strategies Assessment with the Antecedent Water Level (AWL) Flood Hazard Information and Report and Coincident Wind-Generated for Recommendations 2.1 of the Waves (CWGW) - Values Near-Term Task Force Review of Reported in Open Water in River Insights from the Fukushima Dai-ichi Outboard of River Bulkhead and Accident ADAMS Accession U2 Intake Structure No. ML16104A041 Combined Event with 150,000 cfs 18.9 ft 2.1 ft 21.0 ft Flow in Hudson River Coincident NGVD29 NGVD29 with PMSS, Including AWL and CWGW - Values Reported in Open Areas of Powerblock Yard Between U2 Intake Structure and U2 Turbine Building Combined Event with 150,000 cfs 18.9 ft 4.7 ft 23.6 ft Flow in Hudson River Coincident NGVD29 NGVD29 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 Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Storm Surge (continued)

Combined Event with 150,000 cfs 18.9 ft 0.0 ft 18.9 ft Letter dated April 5, 2016, entitled Flow in Hudson River Coincident NGVD29 NGVD29 "Entergy Supplement to Basis for with PMSS, Including AWL and Performance of the Mitigating CWGW - Values Reported at Strategies Assessment with the Location East of U2 and U3 Flood Hazard Information and Report Turbine Buildings for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident ADAMS Accession No. ML16104A041 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 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.

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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 Waves/ Design Basis Reference Elevation Runup Hazard Elevation Local Intense Precipitation Not included Not included Not included Flood Hazard Reevaulation Report in DB in DB in DB (FHRR) Revision 2, Section 4.1.1 Streams and Rivers Probable Maximum Flood (PMF) 12.7 ft 1.0 ft 13.7 ft FHRR Revision 2, Section 2.3.1 and on the Hudson River NGVD29 NGVD29 Table 4.1-1 PMF with Low Tide on the 13.0 ft 1.0 ft 14.0 ft FHRR Revision 2, Section 2.3.1 and Hudson River NGVD29 NGVD29 Table 4.1-1 PMF with High Tide on the 12.4 ft 1.0 ft 13.4 ft FHRR Revision 2, Section 2.3.1 and Hudson River NGVD29 NGVD29 Table 4.1-1 Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Storm Surge Probable Maximum Hurricane 13.5 ft 1.0 ft 14.5 ft FHRR Revision 2, Section 2.3.1 and (PMH) with Spring High Tide on NGVD29 NGVD29 Table 4.1-1 the Hudson River Standard Project Hurricane and 13.0 ft 1.0 ft 14.0 ft FHRR Revision 2, Section 2.3.1 and Standard Project Flood on the NGVD29 NGVD29 Table 4.1-1 Hudson River 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 Waves/ Design Basis Reference Elevation Runup Hazard Elevation Seiche Not included Not included Not included FHRR Revision 2, Section 4.1.5 in DB in DB in DB Tsunami Not included Not included Not included FHRR Revision 2, Section 4.1.6 in DB in DB in DB Ice-Induced Flooding Not included Not included Not included FHRR Revision 2, Section 4.1.7 in DB in DB in DB Channel Migrations/Diversions Not included Not included Not included FHRR Revision 2, Section 4.1.8 in DB in DB in DB Note 1: Reported values are rounded to the nearest one-tenth of a foot.

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Indian Point Nuclear Generating Units 2 & 3 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Local Intense Precipitation Unit 2 Transformer Yard Doors 18.8 ft Minimal 18.8 ft Letter dated August 18, 2014, Maximum Water-Surface NGVD29 NGVD29 entitled "Revised FLO-2D Analysis Elevation - Door ID U2-ABFP-2 to Address the Current LIP Regarding the Flooding Aspects of Recommendations 2.1 of the Near-Unit 2 Transformer Yard Doors 18.8 ft Minimal 18.8 ft Term Task Force Review of the Maximum Water-Surface NGVD29 NGVD29 Insights from the Fukushima Dai-ichi Elevation - Door ID U2-ABFP-3 Accident Indian Point Units Nos. 2 and 3." ADAMS Accession Unit 2 Transformer Yard Doors 19.1 ft Minimal 19.1 ft No. ML16116A060 Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U2-CB-1 Unit 2 Transformer Yard Doors 19.2 ft Minimal 19.2 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U2-PAB-1 Unit 2 Transformer Yard Doors 19.0 ft Minimal 19.0 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U2-ABFP-1 Unit 3 Transformer Yard Doors 18.3 ft Minimal 18.3 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-ABFP-1 Unit 3 Transformer Yard Doors 18.5 ft Minimal 18.5 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-ABFP-2 Unit 3 Transformer Yard Doors 18.6 ft Minimal 18.6 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-ABFP-3 Unit 3 Transformer Yard Doors 18.8 ft Minimal 18.8 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-PAB-1 Unit 3 Transformer Yard Doors 18.9 ft Minimal 18.9 ft Maximum Water-Surface NGVD29 NGVD29 Elevation - Door ID U3-PAB-2 Unit 3 Transformer Yard Doors 19.2 ft Minimal 19.2 ft Maximum Water-Surface NGVD29 NGVD29 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 Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Streams and Rivers Cool Season on Hudson River 16.5 ft 2.1 ft 18.6 ft FHRR Rev. 2 (12/9/2014) Sections PMF with Snow Pack Coincident NGVD29 NGVD29 3.4.2.5.1, 3.4.2.5.2, and FHRR (Rev.

with 25-year Surge and 10% 12/10/2015) Section 6.2.2 Exceedance High Tide Failure of Dams and Onsite Water Control/Storage Structures REDACTED REDACTED REDACTED REDACTED REDACTED Storm Surge Combined Event with 150,000 cfs 18.9 ft 2.9 ft 21.8 ft Letter dated April 5, 2016, entitled Flow in Hudson River Coincident NGVD29 NGVD29 "Entergy Supplement to Basis for with the Probable Maximum Performance of the Mitigating Storm Surge (PMSS), Including Strategies Assessment with the Antecedent Water Level (AWL) Flood Hazard Information and Report and Coincident Wind-Generated for Recommendations 2.1 of the Waves (CWGW) - Values Near-Term Task Force Review of Reported in Open Water in River Insights from the Fukushima Dai-ichi Outboard of River Bulkhead and Accident ADAMS Accession U2 Intake Structure No. ML16104A041 Combined Event with 150,000 cfs 18.9 ft 2.1 ft 21.0 ft Flow in Hudson River Coincident NGVD29 NGVD29 with PMSS, Including AWL and CWGW - Values Reported in Open Areas of Powerblock Yard Between U2 Intake Structure and U2 Turbine Building Combined Event with 150,000 cfs 18.9 ft 4.7 ft 23.6 ft Flow in Hudson River Coincident NGVD29 NGVD29 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 Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Storm Surge (continued)

Combined Event with 150,000 cfs 18.9 ft 0.0 ft 18.9 ft Letter dated April 5, 2016, entitled Flow in Hudson River Coincident NGVD29 NGVD29 "Entergy Supplement to Basis for with PMSS, Including AWL and Performance of the Mitigating CWGW - Values Reported at Strategies Assessment with the Location East of U2 and U3 Flood Hazard Information and Report Turbine Buildings for Recommendations 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident ADAMS Accession No. ML16104A041 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 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.

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