ML19094A184

Cover Letter Final Safety Evaluation for Westinghouse Electric Company Topical Report WCAP-18032-P, Revision 0, and WCAP-18032-NP, Revision 0, Calculation of Mixed Core Safety Limit Minimum Critical Power Ratio

ML19094A184
Person / Time
Site:	Westinghouse
Issue date:	05/06/2019
From:	Dennis Morey NRC/NRR/DLP/PLPB
To:	Gresham J Westinghouse
Lenning E
Shared Package
ML19094A033 -Pkg.	List: ML19094A184 ML19098B054
References
EPID L-2016-TOP-0015
Download: ML19094A184 (3)

Text

OFFICIAL USE ONLY - PROPRIETARY INFORMATION May 6, 2019 Mr. James A. Gresham, Manager Regulatory Compliance and Plant Licensing Westinghouse Electric Company 1000 Westinghouse Drive Cranberry Township, PA 16066

SUBJECT:

FINAL SAFETY EVALUATION FOR WESTINGHOUSE ELECTRIC COMPANY TOPICAL REPORT WCAP-18032-P, REVISION 0, AND WCAP-18032-NP, REVISION 0, "CALCULATION OF MIXED CORE SAFETY LIMIT MINIMUM CRITICAL POWER RATIO" (EPID: L-2016-TOP-0015)

Dear Mr. Gresham:

By letter dated December 12, 2016 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML16350A113), Westinghouse Electric Company (Westinghouse) submitted for U.S. Nuclear Regulatory Commission (NRC) staff review Topical Report (TR)

WCAP-18032-P, Revision 0, and WCAP-18032-NP, Revision 0, "Calculation of Mixed Core Safety Limit Minimum Critical Power Ratio." By letter dated January 16, 2018 (ADAMS Accession No. ML17352A013), the NRC issued its request for additional information questions for the review of TR WCAP-18032-P, Revision 0, and WCAP-18032-NP, Revision 0.

The enclosed final SE addresses the applicability of the WCAP-18032-P, Revision 0, and WCAP-18032-NP, Revision 0, "Calculation of Mixed Core Safety Limit Minimum Critical Power Ratio."

The NRC staff has found that WCAP-18032-P, Revision 0, and WCAP-18032-NP, Revision 0, "Calculation of Mixed Core Safety Limit Minimum Critical Power Ratio" is acceptable for referencing in licensing applications provided that the limitations and conditions stipulated in the Section 4.0, conclusions in Section 5.0, and applicability defined in the enclosed NRC final SE are met along with the proper documentation.

NOTICE: Enclosure 2 and Attachment 2 transmitted herewith contains SUNSI. When separated from Enclosure 2 and Attachment 2, this transmittal document is decontrolled.

OFFICIAL USE ONLY - PROPRIETARY INFORMATION

OFFICIAL USE ONLY - PROPRIETARY INFORMATION J. Gresham Our acceptance applies only to material provided in the subject TRs. In accordance with the guidance provided on the NRC website, we request that Westinghouse publish accepted proprietary and non-proprietary versions of these TRs within three months of receipt of this letter.

The accepted versions shall incorporate this letter and the enclosed final SE after the title page.

Also, they must contain historical review information, including NRC requests for additional information (RAIs) and your responses. The accepted versions shall include an "-A" (designating accepted) following the TRs identification symbol.

As an alternative to including the RAIs and RAI responses behind the title page, if changes to the TRs were provided to the NRC staff to support the resolution of RAI responses, and the NRC staff reviewed and approved those changes as described in the RAI responses, there are two ways that the accepted version can capture the RAIs:

1. The RAIs and RAI responses can be included as an Appendix to the accepted version.

2. The RAIs and RAI responses can be captured in the form of a table (inserted after the final SE) which summarizes the changes as shown in the approved version of the TRs. The table should reference the specific RAIs and RAI responses which resulted in any changes, as shown in the accepted version of the TRs.

If future changes to the NRCs regulatory requirements affect the acceptability of this TR, Westinghouse will be expected to revise the TR appropriately or justify its continued applicability for subsequent referencing. Licensees referencing this TR would be expected to justify its continued applicability or evaluate their plant using the revised TR.

Sincerely,

/RA Jonathan Rowley for/

Dennis C. Morey, Chief Licensing Processes Branch Division of Licensing Projects Office of Nuclear Reactor Regulation Docket No. 99902038

Enclosures:

As stated OFFICIAL USE ONLY - PROPRIETARY INFORMATION

ML19094A033 Pkg.

ML19094A184 Ltr.

ML19098B024 Prop SE Enclosure 2 ML19098B076 Prop Comment Resolution Attachment 2 ML19098B091 Non-Prop Comment Resolution Attachment 1 ML19098B054 Non-Prop SE Enclosure 1

• concurred via e-mail NRR-106 OFFICE NRR/DLP/PLPB NRR/DLP/PLPB/LA* NRR/DSS/SNPB* NRR/DLP/PLPB/BC NAME ELenning DHarrison RLukes DMorey (JRowley for)

DATE 4/4/19 4/16/19 5/1/19 5/6/19