ML22040A338: Difference between revisions

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=Text=
=Text=
{{#Wiki_filter:Enclosure 1 Kairos Power Response to NRC Questions 2.5-1, 2.5-2, 2.5-3, and 2.5-4 (Non-Proprietary)
{{#Wiki_filter:Enclosure 1 Kairos Power Response to NRC Question s 2.5-1, 2.5-2, 2.5-3, and 2.5-4


({J Kairos Power Question Number: 2.51 Section 2.5.3 of the application relies on the information of Clinch River Early Site Permit applications earthquake catalog, which ends in 2013. An updated (2013  2021) earthquake catalog should be provided to demonstrate that the assumptions and conclusions in the CRN PSHA remain valid.
(Non-Proprietary)
Kairos Power Response:
 
The possible changes in earthquake activity in the Hermes, and Clinch River Nuclear (CRN),
({J Kairos Power
site region during the 20132021 period relative to the CRN rates have not yet been finalized. The PSAR reflects an assumption that the Clinch River Early Site Permit application earthquake catalog is representative of the seismic activity to be expected at the Hermes site, based on proximity to CRN and the fact that recent seismic activity in the Central and Eastern United States (CEUS) since the 2012 Mineral Virginia earthquake event has not been significant.
 
Kairos Power is not requesting final approval of a seismic hazard design profile for Hermes as part of the PSAR. The information provided is sufficient to determine suitably of the site for the proposed use of a test reactor. The Hermes Operating License Application will report the seismic hazard with updated earthquake catalog recurrence rates.
QuestionNumber:2.5 1
Impact on Licensing Document:
 
This response has no impact on the content of PSAR Section 2.5.
Section2.5.3oftheapplicationrelies ontheinformationofClinch RiverEarlySitePermit applicationsearthquakecatalog,whichendsin2013.An updated(20132021) earthquake catalogshouldbeprovidedto demonstratethattheassumptionsandconclusionsinthe CRNPSHAremainvalid.
 
KairosPowerResponse:
 
Thepossible changesinearthquakeactivityintheHermes,andClinch RiverNuclear(CRN),
siteregionduringthe20132021periodrelativetotheCRNrateshavenotyetbeen finalized.ThePSARreflectsanassumptionthattheClinchRiverEarly SitePermitapplication earthquakecatalogisrepresentativeoftheseismicactivitytobeexpectedat theHermes site, basedonproximityto CRNandthefactthatrecentseismicactivityintheCentraland EasternUnitedStates (CEUS)sincethe2012MineralVirginiaearthquakeeventhasnot been significant.
 
Kairos Powerisnot requesting finalapprovalofaseismichazard designprofileforHermes aspartofthePSAR.The information providedissufficienttodeterminesuitablyofthesite fortheproposeduseofa testreactor.TheHermesOperatingLicenseApplicationwill reporttheseismichazardwithupdatedearthquakecatalogrecurrencerates.
 
Impacton LicensingDocument:
 
ThisresponsehasnoimpactonthecontentofPSARSection2.5.


==References:==
==References:==
None
Page1of1
({J Kairos Power
QuestionNumber:2.5 2


None Page 1 of 1
ForSection2.5.4.3,howdoesKairosintendtodeterminethatthefoundationrock showsno evidenceofkarstic dissolution?


({J Kairos Power Question Number: 2.52 For Section 2.5.4.3, how does Kairos intend to determine that the foundation rock shows no evidence of karstic dissolution?
KairosPowerResponse:
Kairos Power Response:
 
Boring data closest to the proposed Hermes reactor location indicates the top of the weathered rock is encountered at a depth of approximately 13.5 ft., and the top of sound rock at a depth of approximately 30 ft. The overburden soils and the weathered rock will be excavated. Below the weathered rock, sound bedrock recovered from the borings drilled shows no evidence of the weakening or weathering that is observed in the interface closer to the surface. The Hermes foundation will be deployed over an engineered crushed stone or lean concrete fill placed directly over sound rock. The excavation is planned to reach the approximately 30 ft depth, exposing the surface of the foundation rock to allow for inspection and surface preparation. These activities, boring data and foundation rock inspection following excavation, will allow the determination to be made that the foundation rock shows no evidence of karstic dissolution.
Boringdataclosestto theproposedHermesreactor locationindicatesthetopofthe weathered rockisencounteredata depthofapproximately13.5ft.,andthetopofsound rock at a depthofapproximately30 ft.Theoverburdensoilsandtheweatheredrockwillbe excavated. Belowtheweatheredrock,soundbedrockrecoveredfromtheboringsdrilled showsnoevidenceoftheweakeningorweatheringthatisobservedintheinterfacecloser to thesurface.TheHermesfoundationwillbedeployedoveranengineeredcrushedstone orleanconcretefillplaced directlyoversoundrock. Theexcavationisplannedtoreachthe approximately30ftdepth,exposingthesurface ofthefoundationrocktoallowfor inspectionandsurface preparation.Theseactivities,boringdataandfoundationrock inspectionfollowingexcavation,willallowthedeterminationto bemade thatthe foundationrockshowsnoevidenceofkarsticdissolution.
Impact on Licensing Document:
 
This response has no impact on the content of PSAR Section 2.5.
ImpactonLicensingDocument:
 
ThisresponsehasnoimpactonthecontentofPSARSection2.5.


==References:==
==References:==
None
Page1of1
({J Kairos Power
QuestionNumber:2.5 3
GeologiccrosssectionAA(Figure2.52)appearstobemissingtheMascotDolomite,which isshownonthemap(Figure2.51)butnot inthecrosssection.Provideanewcrosssection thatincludesallgeologicunitsshownonthesurfaceandencounteredinthesubsurface.


None Page 1 of 1
KairosPowerResponse:


({J Kairos Power Question Number: 2.53 Geologic crosssection AA (Figure 2.52) appears to be missing the Mascot Dolomite, which is shown on the map (Figure 2.51) but not in the crosssection. Provide a new crosssection that includes all geologic units shown on the surface and encountered in the subsurface.
Figure2.52hasbeenupdatedtoaddtheMascotDolomite,consistent withFigure 2.51.
Kairos Power Response:
Locationofinterfaces anddipsareindicated asapproximate.
Figure 2.52 has been updated to add the Mascot Dolomite, consistent with Figure 2.51.
 
Location of interfaces and dips are indicated as approximate.
ImpactonLicensingDocument:
Impact on Licensing Document:
 
The PSAR Section 2.5 Figure 2.52, Subsurface Profile AA has been deleted and replaced by the updated Figure 2.52 (attached). This change will be included in a future revision to the PSAR.
ThePSARSection2.5Figure2.52,Subsurface ProfileAAhasbeen deleted andreplacedby theupdatedFigure2.52(attached).Thischange willbeincludedinafuture revisionto the PSAR.


==References:==
==References:==
None


None Page 1 of 2
Page1of2 UPDATEDFIGURE2.5 2SubsurfaceProfileA A PROFILE A-A'


UPDATED FIGURE 2.52 Subsurface Profile AA PROFILE A-A' RESIDIUU M ROCK W eathered ELEV [ft]                                                           Limestone                          SURFACE SOILS FILL Fragments Fat clay w/rock 780 fragments B-5 Stiff to very Stiff 770                       N =10 to 20 760 750 740                                                                                        =--'    Om CT go 730 720 710 Limestone RESIDIUU M CLAY                      LIM ESTONE                                                        Light Gray Fat C la y                        Light Ol ive Gray WEATHERED Very Soft                                                          LI MESTONE N = 2 to 5 CLAY FILL                        o'<"'            GEOLOGIC BOUNDARY                              p-,                I
RESIDIUU M ROCK W eathered ELE V [ft] FILL L imestone SURFACE SOILS Fat cla y w/ rock Fragments 780 fragments Stiff to very Stiff B-5 770 N =10 to 20
                                                                  - Ops: Pond Springs Formation                0      50'      200'
          ~    CLAY FILL & GRAVEL                                - Om: Murfreesboro Limestone
[H ORIZONTAL ]
                                                    \            - Oma: Mascot Dolomite LIMESTONE                                  o"' - Unit interfaces and dips shown are              p-,                I
          ~    DOLOMITIC LIMESTONE approximate (Tennessee Geological            0      20'      50'
          ~    RESIDIUM CLAY                                      Survey, 2015)                                    [VERTICAL]
ALLUVIAL CLAY
                                                      - ~ - GROUNDWATER TABLE (Approx imate )
RESIDIUM ROCK Information between borings is assumed lfil WEATHERED LIMESTONE                                                        and actual conditions may vary Page 2 of 2


({J Kairos Power Question Number 2.54 Geologic crosssection BB (Figure 2.53) shows the Mascot Dolomite appearing to dip to the northwest. However, geologic maps of the site show all units at the site location dipping to the southeast (see Geologic Map of the Elverton Quadrangle, Tennessee Geological Survey, 2015). Please confirm the correct dip direction of the Mascot Dolomite and provide a new crosssection that shows the correct dip if needed.
760
Kairos Power Response:
 
An update to Figure 2.53 is provided showing the dip of the interface consistent with the Elverton Quadrangle (Reference 1). Figure 2.53 has been updated to be consistent with Figure 2.51 and the Reference 1 geologic map. The location of interfaces and dips are indicated as approximate and consistent with Reference 1.
750
Impact on Licensing Document:
 
The PSAR Section 2.5 Figure 2.53, Subsurface Profile BB has been deleted and replaced by the updated Figure 2.53 (attached). This change will be included in a future revision to the PSAR.
740 = --' Om CT go 730
 
720
 
710 RESIDIUU M CLAY LI M ESTONE L imestone Fat C la y L ight Oliv e Gra y WEATHERED L ight Gra y V ery Soft LI M ESTONE N = 2 to 5
 
CLAY FILL o'<"' GEOLOGIC BOUNDARY p-, I
- Ops: Pond Springs Form at ion 0 50' 200'
~ CLAY FILL & GRAVEL - Om: Murfreesboro Limestone [HORIZONTAL ]
\\ - Oma: Mascot Dolomite LIMESTONE o"' p-, I
~ DOLOMITIC LIMESTONE - Unit interfaces and dips shown are 0 20' 50' approximate (Tennes see Geological
~ RESIDIUM CLAY Survey, 2015) [VERTICAL]
ALLUVIAL CLAY -~- GROUNDWATER TABLE (Approx imate )
RESIDIUM ROCK Information between borings is assumed lfil WEATHERED LIMESTONE and actual conditions may vary
 
Page2of2
({J Kairos Power
 
QuestionNumber2.54
 
GeologiccrosssectionBB(Figure2.53)showstheMascotDolomiteappearingto dipto thenorthwest.However,geologicmapsofthesiteshow allunitsatthesitelocation dipping to thesoutheast(seeGeologicMapoftheElvertonQuadrangle,TennesseeGeological Survey,2015).PleaseconfirmthecorrectdipdirectionoftheMascotDolomiteandprovide a newcrosssectionthatshowsthecorrectdipifneeded.
 
KairosPowerResponse:
 
An updatetoFigure 2.53isprovidedshowingthedipoftheinterfaceconsistentwiththe ElvertonQuadrangle(Reference1).Figure 2.53hasbeenupdated tobeconsistent with Figure2.51andtheReference1geologicmap.Thelocationofinterfacesanddipsare indicatedasapproximateandconsistentwithReference1.
 
ImpactonLicensingDocument:
 
ThePSARSection2.5Figure2.53,Subsurface ProfileBBhas beendeletedandreplacedby theupdatedFigure2.53(attached).Thischange willbeincludedinafuture revisionto the PSAR.


==References:==
==References:==
: 1. PSAR Section 2.5.6 Reference 4, Limiszki, P., "Geologic Map of the Elverton Quadrangle, Tennessee," Tennessee Geologic Survey. 2015.
: 1. PSARSection2.5.6Reference4,Limiszki,P.,"GeologicMapoftheElvertonQuadrangle, Tennessee,"TennesseeGeologicSurvey.2015.
Page 1 of 2
 
Page1of2 UPDATEDFIGURE 2.5 3SubsurfaceProfileBB
 
PROFILE B-B'
 
ELE V [ft]
 
780
 
770
 
760
 
750
 
740
 
730
 
720
 
710
 
700
 
690
 
RESIOIUU M CLAY Oma DO LOMIT E Ops LI MESTONE Fat Cla y light Oli v e Gra y Light Olive Gra y Ve ry Soft { assume d )
N=2to5
 
R"' GEOLOGIC BOUNDARY o \\ - Ops: Pond Springs Formation
- Om : Mu rfreesboro Limestone Ill CLAY FILL - Oma : Mascot Dolomite
~ CLAY FILL & GRAVEL o"' - Unit interfaces and dips shown are 0 50' 200' approx imate (Tennessee Geo log ica l [ HOR IZ ON TAL]
Ill LIMESTONE Survey, 2015)
~ DOLOMITIC LIMESTONE -*-GROUNDWATER TABLE 0 20' 50'
~ RESIDIUM CLAY (Approx imate) [VERTICAL ]
Ill ALLUVIAL CLAY RESIDIUM ROCK Information betw een borings is assumed LJ WEATHERED LIMESTONE and actual conditions may vary


UPDATED FIGURE 2.53 Subsurface Profile BB PROFILE B-B' ELEV [ ft]
Page2of2}}
780 770 760 750 740 730 720 710 700 690 RESIOIUU M CLAY    Oma DO LOMITE                                  Ops LI MESTONE Fat Clay            light Olive Gra y                                Light Olive Gra y Very Soft                                                                  {assumed)
N=2to5 R"'            GEOLOGIC BOUNDARY o\            - Ops: Pond Springs Formation
                                                      - Om : Mu rfreesboro Limestone Ill CLAY FILL                              - Oma : Mascot Dolomite
          ~  CLAY FILL & GRAVEL o"' - Unit interfaces and dips shown are                0        50'    200'
[ HORIZONTAL]
approx imate (Tennessee Geo logical Ill LIMESTONE                              Survey , 2015)
          ~  DOLOMITIC LIMESTONE
                                          - * - GROUNDWATER TABLE                                      0        20'      50'
          ~  RESIDIUM CLAY                        (Approx imate)                                          [VERTICAL ]
Ill ALLUVIAL CLAY RESIDIUM ROCK Information between borings is assumed LJ WEATHERED LIMESTONE                                            and actual conditions may vary Page 2 of 2}}

Latest revision as of 18:17, 18 November 2024

Kairos Power LLC, Response to NRC Questions 2.5-1, 2.5-2, 2.5-3, and 2.5-4 for PSAR Section 2.5 on Hermes Construction Permit Application
ML22040A338
Person / Time
Site: Hermes File:Kairos Power icon.png
Issue date: 02/09/2022
From:
Kairos Power
To:
Office of Nuclear Reactor Regulation
Shared Package
ML22040A336 List:
References
KP-NRC-2202-002
Download: ML22040A338 (7)
v • d • e


Text

Enclosure 1 Kairos Power Response to NRC Question s 2.5-1, 2.5-2, 2.5-3, and 2.5-4

(Non-Proprietary)

({J Kairos Power

QuestionNumber:2.5 1

Section2.5.3oftheapplicationrelies ontheinformationofClinch RiverEarlySitePermit applicationsearthquakecatalog,whichendsin2013.An updated(20132021) earthquake catalogshouldbeprovidedto demonstratethattheassumptionsandconclusionsinthe CRNPSHAremainvalid.

KairosPowerResponse:

Thepossible changesinearthquakeactivityintheHermes,andClinch RiverNuclear(CRN),

siteregionduringthe20132021periodrelativetotheCRNrateshavenotyetbeen finalized.ThePSARreflectsanassumptionthattheClinchRiverEarly SitePermitapplication earthquakecatalogisrepresentativeoftheseismicactivitytobeexpectedat theHermes site, basedonproximityto CRNandthefactthatrecentseismicactivityintheCentraland EasternUnitedStates (CEUS)sincethe2012MineralVirginiaearthquakeeventhasnot been significant.

Kairos Powerisnot requesting finalapprovalofaseismichazard designprofileforHermes aspartofthePSAR.The information providedissufficienttodeterminesuitablyofthesite fortheproposeduseofa testreactor.TheHermesOperatingLicenseApplicationwill reporttheseismichazardwithupdatedearthquakecatalogrecurrencerates.

Impacton LicensingDocument:

ThisresponsehasnoimpactonthecontentofPSARSection2.5.

References:

None

Page1of1

({J Kairos Power

QuestionNumber:2.5 2

ForSection2.5.4.3,howdoesKairosintendtodeterminethatthefoundationrock showsno evidenceofkarstic dissolution?

KairosPowerResponse:

Boringdataclosestto theproposedHermesreactor locationindicatesthetopofthe weathered rockisencounteredata depthofapproximately13.5ft.,andthetopofsound rock at a depthofapproximately30 ft.Theoverburdensoilsandtheweatheredrockwillbe excavated. Belowtheweatheredrock,soundbedrockrecoveredfromtheboringsdrilled showsnoevidenceoftheweakeningorweatheringthatisobservedintheinterfacecloser to thesurface.TheHermesfoundationwillbedeployedoveranengineeredcrushedstone orleanconcretefillplaced directlyoversoundrock. Theexcavationisplannedtoreachthe approximately30ftdepth,exposingthesurface ofthefoundationrocktoallowfor inspectionandsurface preparation.Theseactivities,boringdataandfoundationrock inspectionfollowingexcavation,willallowthedeterminationto bemade thatthe foundationrockshowsnoevidenceofkarsticdissolution.

ImpactonLicensingDocument:

ThisresponsehasnoimpactonthecontentofPSARSection2.5.

References:

None

Page1of1

({J Kairos Power

QuestionNumber:2.5 3

GeologiccrosssectionAA(Figure2.52)appearstobemissingtheMascotDolomite,which isshownonthemap(Figure2.51)butnot inthecrosssection.Provideanewcrosssection thatincludesallgeologicunitsshownonthesurfaceandencounteredinthesubsurface.

KairosPowerResponse:

Figure2.52hasbeenupdatedtoaddtheMascotDolomite,consistent withFigure 2.51.

Locationofinterfaces anddipsareindicated asapproximate.

ImpactonLicensingDocument:

ThePSARSection2.5Figure2.52,Subsurface ProfileAAhasbeen deleted andreplacedby theupdatedFigure2.52(attached).Thischange willbeincludedinafuture revisionto the PSAR.

References:

None

Page1of2 UPDATEDFIGURE2.5 2SubsurfaceProfileA A PROFILE A-A'

RESIDIUU M ROCK W eathered ELE V [ft] FILL L imestone SURFACE SOILS Fat cla y w/ rock Fragments 780 fragments Stiff to very Stiff B-5 770 N =10 to 20

760

750

740 = --' Om CT go 730

720

710 RESIDIUU M CLAY LI M ESTONE L imestone Fat C la y L ight Oliv e Gra y WEATHERED L ight Gra y V ery Soft LI M ESTONE N = 2 to 5

CLAY FILL o'<"' GEOLOGIC BOUNDARY p-, I

- Ops: Pond Springs Form at ion 0 50' 200'

~ CLAY FILL & GRAVEL - Om: Murfreesboro Limestone [HORIZONTAL ]

\\ - Oma: Mascot Dolomite LIMESTONE o"' p-, I

~ DOLOMITIC LIMESTONE - Unit interfaces and dips shown are 0 20' 50' approximate (Tennes see Geological

~ RESIDIUM CLAY Survey, 2015) [VERTICAL]

ALLUVIAL CLAY -~- GROUNDWATER TABLE (Approx imate )

RESIDIUM ROCK Information between borings is assumed lfil WEATHERED LIMESTONE and actual conditions may vary

Page2of2

({J Kairos Power

QuestionNumber2.54

GeologiccrosssectionBB(Figure2.53)showstheMascotDolomiteappearingto dipto thenorthwest.However,geologicmapsofthesiteshow allunitsatthesitelocation dipping to thesoutheast(seeGeologicMapoftheElvertonQuadrangle,TennesseeGeological Survey,2015).PleaseconfirmthecorrectdipdirectionoftheMascotDolomiteandprovide a newcrosssectionthatshowsthecorrectdipifneeded.

KairosPowerResponse:

An updatetoFigure 2.53isprovidedshowingthedipoftheinterfaceconsistentwiththe ElvertonQuadrangle(Reference1).Figure 2.53hasbeenupdated tobeconsistent with Figure2.51andtheReference1geologicmap.Thelocationofinterfacesanddipsare indicatedasapproximateandconsistentwithReference1.

ImpactonLicensingDocument:

ThePSARSection2.5Figure2.53,Subsurface ProfileBBhas beendeletedandreplacedby theupdatedFigure2.53(attached).Thischange willbeincludedinafuture revisionto the PSAR.

References:

1. PSARSection2.5.6Reference4,Limiszki,P.,"GeologicMapoftheElvertonQuadrangle, Tennessee,"TennesseeGeologicSurvey.2015.

Page1of2 UPDATEDFIGURE 2.5 3SubsurfaceProfileBB

PROFILE B-B'

ELE V [ft]

780

770

760

750

740

730

720

710

700

690

RESIOIUU M CLAY Oma DO LOMIT E Ops LI MESTONE Fat Cla y light Oli v e Gra y Light Olive Gra y Ve ry Soft { assume d )

N=2to5

R"' GEOLOGIC BOUNDARY o \\ - Ops: Pond Springs Formation

- Om : Mu rfreesboro Limestone Ill CLAY FILL - Oma : Mascot Dolomite

~ CLAY FILL & GRAVEL o"' - Unit interfaces and dips shown are 0 50' 200' approx imate (Tennessee Geo log ica l [ HOR IZ ON TAL]

Ill LIMESTONE Survey, 2015)

~ DOLOMITIC LIMESTONE -*-GROUNDWATER TABLE 0 20' 50'

~ RESIDIUM CLAY (Approx imate) [VERTICAL ]

Ill ALLUVIAL CLAY RESIDIUM ROCK Information betw een borings is assumed LJ WEATHERED LIMESTONE and actual conditions may vary

Page2of2

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