ML16190A346

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Agenda and Presentation, June 28, 2016, Public Meeting with Dominion, Inc
ML16190A346
Person / Time
Site: Kewaunee Dominion icon.png
Issue date: 06/28/2016
From:
Dominion Energy Kewaunee
To:
Office of Nuclear Material Safety and Safeguards
Ted Carter 301-415-5543
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ML16190A347 List:
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Download: ML16190A346 (24)
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Load Drop Analysis for Spent Fuel Cask Handling Operations Handling Operations Kewaunee Power Station June 28, 2016 License Amendment Request Pre-Application NRC Presentation Dominion Energy Kewaunee Dominion Energy Kewaunee 1

Agenda

  • Meeting Objectives
  • Cask Handling Operations Current Licensing Basis (CLB)

(CLB)

  • NAC International Secure Lift System
  • Basis for Requesting Prior NRC Approval Basis for Requesting Prior NRC Approval
  • Load Drop Analysis
  • License Amendment Request (LAR)

License Amendment Request (LAR)

  • Questions Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 2

Meeting Objectives

  • Discuss basis and need for LAR submittal
  • Discuss proposed cask handling methods Di LAR b

itt l d

ti i f ti

  • Discuss LAR submittal and supporting information required for NRC review
  • Develop a clear understanding of any NRC Develop a clear understanding of any NRC concerns
  • Respond to NRC Questions Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 3

Cask Handling Operations Auxiliary Building Spent Fuel Pool Cask Decontamination Area Truck Bay Auxiliary Building Cross Sectional View (looking South)

Area Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 4

Cask Handling Operations View from S

t F l

Spent Fuel Pool Elevation (looking North)

Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 5

Cask Handling Operations Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 6

Views from Spent Fuel Pool Elevation (looking North)

Cask Handling Operations CLB (cont.)

ili B ildi

)

(Auxiliary Building)

- Storage Canister Loading (Spent Fuel Pool)

- Storage Canister Processing (Cask

- Storage Canister Processing (Cask Decontamination Area)

- Storage Canister Transport (Truck Bay)

  • Auxiliary Building (AB) Crane

- Single-failure-proof upgrade (LA 205)

- NUREG-0612 / NUREG-0554 guidance

- USAR includes additional detail and clarifications Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 7

Cask Handling Operations CLB (cont.)

  • Heavy Loads Program

- Cask handling in/around the SFP (TRM) (LA 200)

- Cask handling requires a single-failure-proof handling system when using AB Crane (USAR) handling system when using AB Crane (USAR)

  • USAR includes additional details and clarifications

- Cask load drop not considered credible and Cask load drop not considered credible and accident removed from licensing basis (LA 200)

- Relied on for spent fuel protection Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 8

NAC Secure Lift System Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 9

NAC Secure Lift System (cont.)

  • Special Lifting Devices

- Secure Lift Yoke

- Chain Hoist Assembly Top Bracket TSC Adapter Plate

- TSC Adapter Plate

- Single-failure-proof handling system devices (NUREG-0612 / ANSI 14.6-1993)

(

)

  • Chain Hoist Assembly is not a Special Lifting Device Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 10

NAC Secure Lift System (cont.)

  • Chain Hoist Assembly (CHA) (ASME B30.16-2007)

- Critical Load Handling Equipment (ASME NUM-1-2009)

  • Type IB (Enhanced Safety Features)

>> Design factors 10:1

>> Design factors 10:1

>> Redundant braking and two-block protection

>> Important to Safety Category B component (QA Program)

Program)

>> Rigorous testing, including 300% (MCL) load test

  • Not Type IA (Single-Failure-Proof Features)

- Equipment not acceptable within a nuclear single-failure-proof handling system (NUREG-0612 or NUREG-0554)

NUREG 0554)

Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 11

Basis for Prior NRC Approval

  • Heavy Loads Current Licensing Basis R

l ti Resolution

- NUREG-0612 alternatives:

  • Single-failure-proof equipment; or Single failure proof equipment; or
  • Load drop analysis demonstrating satisfactory outcomes (non-single-failure-proof equipment)

Single-Failure-Proof Alternative Disadvantages (to CHA)

Free Standing Stability Analysis /

Slings ALARA, Complexity, Schedule Seismic Restraint / Slings Industrial Safety, ALARA, Building Capacity, Space Limitations, Schedule Dual Reeve Electric Hoist Complexity, Space Limitations, Crane C

it M i

S h d l Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 12 Capacity Margin, Schedule

Basis for Prior NRC Approval (cont.)

  • Add Cask (TSC) Load Drop Accident into CLB

- Use of non-single-failure-proof NAC chain hoist assembly

- 10 CFR 50.59(c)(2) requires prior NRC approval 10 CFR 50.59(c)(2) requires prior NRC approval

  • Accident of a different type (TSC load drop) than previously evaluated Malf nction of eq ipment important to safet (CHA)
  • Malfunction of equipment important to safety (CHA) with a different result (impact loading to the truck bay structure) than previously evaluated 10 CFR 72 48 d t

i i i t

- 10 CFR 72.48 does not require revision to MAGNASTOR current licensing basis Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 13

Load Drop Analysis Single-Failure Proof Crane Hook Secure Lift Yoke (SLY)

Stack Up Physical Configuration Chain Hoist Assembly (CHA) Top Bracket Chain Hoist Assembly (CHA)

TSC Adapter Plate MAGNASTOR Transfer Cask (MTC)

Maximum TSC Drop Height (Pedestal):

Minimum HHT Deck Height:

Minimum HHT Lower Support Height:

Truck Bay (at grade) Elevation:

18 ft.- 0.33 in.

21.25 in.

3.5 in.

606 ft.- 0 in.

Stack Up Physical Configuration

(

)

- (outer cylinder)

Transportable Storage Canister (TSC) - (inner cylinder)

MTC Doors (shown closed)

MTC Doors (shown open) y (

g

)

Foundation Elevation:

586 ft.- 0 in.

Transfer Adapter Vertical Concrete Cask (VCC) 216.33 VCC Pedestal Heavy Haul Trailer (HHT)

ELEV 606 0 21.25 3.5 Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 14 ELEV. 606-0

Load Drop Analysis (cont.)

Auxiliary Building Spent Fuel Pool Cask Decontamination Area Truck Bay Auxiliary Building Cross Sectional View Area Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 15

Load Drop Analysis (cont.)

  • Configuration Analyzed

- Loaded TSC/MTC and empty VCC in stack up position on HHT

- HHT positioned and leveled for transfer operation HHT positioned and leveled for transfer operation on Auxiliary Building Truck Bay concrete floor

  • Analysis Methodology D Solid Finite Element Model (LS-DYNA Nonlinear Time-History Analysis)

- ANSYS Simulation software

- ANSYS Simulation software

- ASME Code Section III Appendix F criteria

- NUREG-0612 Appendix A guidance pp g

Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 16

Load Drop Analysis (cont.)

  • Analysis Methodology (cont.)

- Conservative TSC Drop heights

  • 18.25 ft (base case) through 27.5 ft (150% base case)

- HHT gap heights at 3 and 4 inches

- HHT gap heights at 3 and 4 inches

- Maximum TSC payload and associated dropped component weights included

- Secondary impacts conservatively modeled with HHT, fuel, fuel basket and TSC bottom plate Flexural energy in HHT and impact damping

- Flexural energy in HHT and impact damping conservatively ignored Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 17

Load Drop Analysis (cont.)

  • Additional Evaluations

- Storage canister spent fuel sub-criticality

- Storage canister passive cooling Auxiliary building truck bay floor stability

- Auxiliary building truck bay floor stability

  • Structural capacity margin

- Spent Fuel Pool (SFP) integrity p

(

)

g y

  • Simplified limit states analysis methodology

- Affect on SSCs supporting SFP functions Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 18

Load Drop Analysis (cont.)

  • Results (preliminary)

- Storage canister confinement integrity maintained

- Concrete cask passive cooling adequate Storage canister and concrete cask remain upright

- Storage canister and concrete cask remain upright on transport trailer (floor stability)

- Auxiliary Building Crane maintains control of MTC (no secondary drop accident)

- Spent fuel pool (SFP) integrity maintained SFP t

i t

ff t d

- SFP support equipment unaffected Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 19

License Amendment Request

  • Add Cask (TSC) Load Drop Analysis into CLB

- Narrow applicability and scope

  • Applies ONLY when away from Spent Fuel Pool (SFP)
  • Applies ONLY for MAGNASTOR TSC transfer Applies ONLY for MAGNASTOR TSC transfer operations between MTC and VCC Chain Hoist Assembly Lifts (110 Ton Capacity / 55 Tons MCL)

Component Lifted Weight (Tons)

Area Transportable Storage Canister (TSC) 49 Truck Bay (stack up only)

  • All other cask handling requirements unchanged Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 20

License Amendment Request (cont.)

- Supporting load drop analyses Proprietar finite element model

  • Proprietary finite element model
  • Auxiliary Building Structural Evaluation
  • No Radiological Consequences

- Proposed Kewaunee USAR revision

  • Intermediate lift device design requirements and safety features safety features
  • Testing, inspection and maintenance standards for use D

l d

i ti d

f

  • Drop analyses descriptions and references Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 21

License Amendment Request (cont.)

- Proposed TRM revision Ne section to ens re anal sis parameters are

  • New section to ensure analysis parameters are satisfied
  • Compensatory measures for nonconforming diti conditions
  • Technical verification prior to lifting a loaded TSC

- Schedule

  • Target submittal in late July

- Request expedited review

  • Provide details required for efficient NRC review
  • Planned decommissioning (PSDAR) activities affected Kewaunee LAR Pre-Application NRC Presentation - Load Drop Analysis for Spent Fuel Cask Handling Operations 22

Questions?

Questions?

List of Acronyms ALARA As Low As Reasonably Achievable CoC Certificate of Compliance MTC MAGNASTOR Transfer Cask NAC Nuclear Assurance Corporation (NAC International Inc )

CLB Current Licensing Basis DEK Dominion Energy Kewaunee (Dominion)

FSAR Final Safety Analysis Report HHT H

H l T il International, Inc.)

NRC Nuclear Regulatory Commission QA Quality Assurance SFP Spent Fuel Pool SLY/CHA S

Lift Y k d Ch i H i t HHT Heavy Haul Trailer ISFSI Independent Spent Fuel Storage Installation KPS Kewaunee Power Station LA License Amendment SLY/CHA Secure-Lift Yoke and Chain Hoist Assembly SSC System, Structure, Component TRM Technical Requirements Manual TSC Transportable Storage Canister LA License Amendment LAR License Amendment Request MAGNASTOR Modular Advanced Generation Nuclear All-purpose STORage MCL Maximum Critical Lift TSC Transportable Storage Canister USAR Updated Safety Analysis Report VCC Vertical Concrete Cask MCL Maximum Critical Lift Kewaunee LAR - Load Drop Analysis for Spent Fuel Cask Handling Operations 24

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