ML110950596

Licensee Slides from 4/5/11 Meeting with Omaha Public Power District to Discuss Its Plans to Submit an Extended Power Uprate for Fort Calhoun Station and Issues Related to Equipment Environmental Qualification

ML110950596
Person / Time
Site:	Fort Calhoun
Issue date:	04/05/2011
From:	Omaha Public Power District
To:	Office of Nuclear Reactor Regulation
Wilkins, L E, NRR/DORL/LPL4, 415-1377
References
TAC ME5104
Download: ML110950596 (24)

Text

Fort Calhoun Station Extended Power Uprate (EPU)

Project EPUs Impact on Environmental Qualification Program 1

AGENDA

• Introductions and Overview

• EPU Impact on Environmental Qualification (EQ)

Program

• License icense Amendment Request

• Overview of EQ Project & HELB Reconstitution

• Take Aways

• Question and Answer 2

Introductions and Overview 3

Introductions

• Bernard Van Sant EPU BOP Project Manager

• Mark Frans Manager Engineering Programs

• Tim Leibel eibel EPU PU BOP OP I&C Electrical lectrical Lead ead

• Tom Shudak FCS Program Engineer

• Ron Wise Consultant

• Bill Hansher FCS Licensing Supervisor 4

EPU Project Overview

• 17% EPU: 1500 MWt to 1755 MWt 80 MWe

• Engineering & Licensing work in progress

• Submit LAR to NRC: May 3131, 2011

• Plant modifications: 2011/2012 RFOs

• Implement EPU: Post-2012 RFO 5

EPU Impact on Environmental Qualification Program 6

EPU Impact on EQ Program EPU Impact on the EQ Program focused on:

• Identifying changes to environmental conditions (normal and accident)

• Ensuring E i that h theh EQ PProgram equipment i will ill continue to perform as required following implementation of EPU 7

EPU Impact on EQ Program Licensing Basis Criteria:

• 10 CFR 50.49 / RG 1.89 / SRP 3.11

• DOR Guidelines (Enclosure 4 to IEB 79-01B)

• Final EQ SER 8

EPU Impact on EQ Program PROCESS USED FOR EVALUATION 9

EPU Impact on EQ Program Method of Evaluation:

• Compared the EPU environments to the current environments and profiles used to demonstrate environmental qualification

• Where EPU profiles exceed the current profiles, then specific parameters were compared against the qualification basis in the EQ File

• Applied Lessons Learned from other utilities 10

EPU Impact on EQ Program Evaluation:

• Based on existing EQ SER

• Containment environmental conditions

- LOCA

- MSLB

• Auxiliary Building environmental conditions

- LOCA

- MSLB / FWLB

- Other

• Normal environmental conditions 11

EPU Impact on EQ Program Results:

Containment

• Peak temperature/pressures are bounded by existing Q values EQ

• LOCA vapor and sump temperatures profiles increased

• Total integrated doses increased

• Analysis included change in containment spray chemistry up to 2500 ppm boron 12

EPU Impact on EQ Program Results:

Auxiliary Building

• MSLB peak temperatures and pressures in Main Steam Line ine Room increased

• Flood level from a FWLB in Main Steam Line Room increased 13

EPU Impact on EQ Program Results:

Auxiliary Building

• Post LOCA temperatures in rooms containing sump recirculation piping increased

• Total integrated doses increased

- Dose increase did not result in any Mild areas becoming radiation Harsh 14

EPU Impact on EQ Program Impacts:

• Evaluation resulted in the identification of required changes to ensure qualification on a component level

• Changes include:

- Update to EQ Files to reflect new EPU conditions (equipment remains fully qualified)

- New or additional test reports need to be incorporated into the EQ Files

- Equipment replacements identified 15

License Amendment Request

• Licensing Report prepared in accordance with RS-001

• Licensing Report content based on lessons learned from previous EPU submittals dealing with EQ

• Licensing icensing Report provides a summary of the pre pre-EPU PU and post-EPU environmental parameters 16

Overview of EQ Project and HELB Reconstitution 17

Overview of EQ Project

• The EQ Project is a program improvement plan to improve the EQ Program (12/2011)

- Improvements to Program Infrastructure

- Validating Design Inputs to EQ Program

- Improvements to the EQ Files

• Scope includes reconstituting HELB analysis outside of containment (6/2011) 18

HELB Reconstitution

• Systems being evaluated for HELB reconstitution are:

- Main Steam (complete)

- Feedwater (complete)

- Letdown / Charging

- Steam Generator Blowdown

- Auxiliary Steam 19

HELB Reconstitution

• Being performed to reconstitute and upgrade the HELB analysis

• The HELB reconstitution is being performed as part of the EQ Project at EPU levels 20

Take Aways 21

Take Aways

• The EPU Project has assessed the impact on the EQ Program

• The assessment focused on the changes to the normal and accident environmental conditions used by the EQ Program

• The EPU assessment has addressed OE from recent submittals related to EQ 22

Take Aways

• Prior to implementation of EPU all EQ Program equipment affected by EPU will be qualified to EPU conditions

• EQ Project and HELB Reconstitution being performed separately but at EPU Conditions and will be completed prior to EPU implementation 23

Questions??

24