ML20128J298

Attachment 5: HI-STORM 100 CoC Appendix D Proposed Changed Pages

ML20128J298
Person / Time
Site:	Holtec, Consolidated Interim Storage Facility
Issue date:	04/28/2020
From:	Holtec
To:	Office of Nuclear Material Safety and Safeguards
Shared Package
ML20128J292	List: ML20128J293 ML20128J295 ML20128J296 ML20128J297 ML20128J298 ML20128J299 ML20128J300 ML20128J306 ML20128J307
References
5014896
Download: ML20128J298 (2)

Text

5014896 Attachment 5 Approved Contents 2.0 Table 2.1-4 BURNUP AND COOLING TIME FUEL QUALIFICATION FOR MPC-32M Polynomial Coefficients, see Paragraph 2.II.1.5.2 Cell Decay Heat Load Limit (kW) A B C D 0.83 6.57083E-14 -4.02593E-09 1.47107E-04 8.01647E-01 0.83 < decay heat 1.25 4.11020E-14 -4.62813E-09 2.17444E-04 -5.55545E-01 1.25 < decay heat 1.46 1.21147E-14 -1.08013E-09 8.66361E-05 4.04455E-01 1.46 < decay heat 3.26 3.76103E-16 4.83486E-11 1.74805E-05 6.53455E-01 The burnup and cooling time for every fuel loaded into the MPC-32M must satisfy the following equation:

= 3 + 2 + +

where, Ct = Minimum cooling time (years),

Bu = Assembly-average burnup (MWd/mtU),

A, B, C, D = Polynomial coefficients listed in Table 2.1-4 Notes:

1) Decay heat per fuel assembly is presented

2) A decay heat value that is equal to or greater than the appropriate decay heat load limit Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 2-11

5014896 Attachment 5 Design Features 3.0 Table 3-1 List of ASME Code Alternatives for HI-STORM Multi-Purpose Canisters (MPCs)

MPC lift lugs NB-1130 NB-1132.2(d) requires that The lugs that are used exclusively for lifting an the first connecting weld of a empty MPC are welded to the inside of the non-pressure retaining pressure-retaining MPC shell, but are not structural attachment to a designed in accordance with Subsection NB.

component shall be The lug-to-Enclosure Vessel Weld is required to considered part of the meet the stress limits of Reg. Guide 3.61 in lieu component unless the weld is of Subsection NB of the Code.

more than 2t from the pressure retaining portion of the component, where t is the nominal thickness of the pressure retaining material.

NB-1132.2(e) requires that the first connecting weld of a welded nonstructural attachment to a component shall conform to NB-4430 if the connecting weld is within 2t from the pressure retaining portion of the component.

MPC Enclosure NB-2000 Requires materials to be Materials will be supplied by Holtec approved Vessel supplied by ASME-approved suppliers with Certified Material Test Reports material supplier. (CMTRs) in accordance with NB-2000 requirements.

MPC Enclosure NB-2121 Provides permitted material Certain duplex stainless steels are not included Vessel specification for pressure- in Section II, Part D, Tables 2A and 2B. UNS retaining material, which must S31803 duplex stainless-steel alloy is evaluated conform to Section II, Part D, in the HI-STORM FW FSAR and meet the Tables 2A and 2B. required design criteria for use in the HI-STORM 100 system per ASME Code Case N-635-1. Appendix 1.A provides the required property data for the necessary safety analysis.

MPC Enclosure NB-3100 Provides requirements for These requirements are not applicable. The HI-Vessel NF-3100 determining design loading STORM FSAR, serving as the Design conditions, such as pressure, Specification, establishes the service conditions temperature, and mechanical and load combinations for the storage system.

loads.

MPC Enclosure NB-4120 NB-4121.2 and NF-4121.2 In-shop operations of short duration that apply Vessel provide requirements for heat to a component, such as plasma cutting of repetition of tensile or impact plate stock, welding, machining, and coating are tests for material subjected to not, unless explicitly stated by the Code, defined heat treatment during as heat treatment operations.

fabrication or installation.

Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 3-4