ML19176A004

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Summary of Meeting with Exelon Generation Company, LLC, on a Planned License Amendment Request Regarding the Relaxation of Containment Differential Pressure Requirements
ML19176A004
Person / Time
Site: FitzPatrick Constellation icon.png
Issue date: 07/15/2019
From: Carleen Parker
Plant Licensing Branch 1
To: Bryan Hanson
Exelon Generation Co
Parker C, NRR/DORL/LPL1
References
EPID L-2019-LRM-0027
Download: ML19176A004 (3)


Text

July 15, 2019 LICENSEE: Exelon Generation Company, LLC FACILITY: James A. FitzPatrick Nuclear Power Plant

SUBJECT:

SUMMARY

OF JUNE 18, 2019, MEETING WITH EXELON GENERATION COMPANY, LLC, ON A PLANNED LICENSE AMENDMENT REQUEST REGARDING THE RELAXATION OF CONTAINMENT DIFFERENTIAL PRESSURE REQUIREMENTS AND THE MODIFICATION OF THE TORUS WATER LEVEL (EPID L-2019-LRM-0027)

On June 18, 2019, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company, LLC (Exelon, the licensee) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss the licensees plan to submit a license amendment request regarding the relaxation of containment differential pressure requirements and the modification of the torus water level at the James A. FitzPatrick Nuclear Power Plant (FitzPatrick). The meeting notice and agenda, dated May 28, 2019, are available in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML19154A262. A list of attendees is provided as Enclosure 1.

The licensee presented an overview of its plans to submit the license amendment request for FitzPatrick. The presentation closely followed Exelons slides provided for the meeting (ADAMS Accession No. ML19168A169).

The licensee stated that the amendment request will contain two separate change requests: the relaxation of containment differential pressure requirements and the modification of the torus water level. The licensee stated that the results of the various testing and calculations will be included and that additional details will be available to the NRC staff for review. The licensee plans on providing a workbook to assist the staff review, which will include, among other items, background information and General Electric Report 005N1724, Short-Term Containment Analysis for Zero Drywell-to-Wetwell Pressure Differential, dated May 2019. The licensee has had success with this approach previously.

The NRC staff provided some feedback to the licensee, including the following:

The licensee should consider including the following in its application:

General Electric Report 005N1724 Methods, assumptions, and results of short-term containment pressure response, temperature response for equipment qualification for equipment inside the containment, and containment wall temperature for structural analysis, and the short and long-term net positive suction head analysis

Methods, assumptions. and results of vent thrust loads, pool swell, condensation oscillation, and chugging analyses Methods, assumptions, and the results of analysis of the loading on the torus walls, and structural analysis of the piping and components inside the torus due to mass and energy release from a design-basis loss of coolant accident and safety relive valve discharge A markup for the FitzPatrick Updated Final Safety Analysis Report The licensee should consider providing a summary of the calculation methodology and how the calculation meets the guidance of Regulatory Guide 1.105, Setpoints for Safety-Related Instrumentation, and Regulatory Issue Summary 2006-17, NRC Staff Position on the Requirements of 10 CFR 50.36, Technical Specifications, Regarding Limiting Safety System Settings During Periodic Testing and Calibration of Instrument Channels. At a minimum, the calculation summary should include the safety limit, the analytical value, total loop error, limiting setpoint, nominal trip setpoint, allowable value, and as-left and as-found limits.

The licensee should identify if it has adopted Technical Specifications Task Force (TSTF) Traveler TSTF-493, Clarify Application of Setpoint Methodology for LSSS

[Limiting Safety System Settings] Functions. If TSTF-493 has been adopted, the relevant notes should be added to the FitzPatrick Technical Specifications regarding as-left and as-found tolerances, or a justification should be provided for not adding the notes.

The schedule currently calls for the license amendment request to be submitted by the end of August 2019.

Members of the public were not in attendance. Public Meeting Feedback forms were not received.

Please direct any inquiries to me at 301-415-1603 or Carleen.Parker@nrc.gov.

/RA/

Carleen J. Parker, Project Manager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-333

Enclosure:

List of Attendees cc: Listserv

LIST OF ATTENDEES JUNE 18, 2019, MEETING WITH EXELON GENERATION COMPANY, LLC PLANNED LICENSE AMENDMENT REQUEST REGARDING THE RELAXATION OF CONTAINMENT DIFFERENTIAL PRESSURE REQUIREMENTS AND THE MODIFICATION OF THE TORUS LEVEL NRC Participants Carleen Parker Calvin Cheung Ahsan Sallman Nagesware Karipineni Gursharan Singh Jerome Bettle Exelon Participants Bill Drews Jason Ritzel Thomas Yurkon Dave Burch Christian Williams Shane Gardner Raymond Paige (Imperia Engineering Partners)

Enclosure

ML19176A004 OFFICE NRR/DORL/LPL1/PM NRR/DORL/LPL1/LA NRR/DORL/LPL1/BC NRR/DORL/LPL1/PM NAME CParker LRonewicz JDanna CParker DATE 07/09/2019 07/08/2019 07/10/2019 07/15/2019