ML032671150
| ML032671150 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 08/05/2003 |
| From: | FirstEnergy Nuclear Operating Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML032671150 (6) | |
Text
Containment Conversion Meeting August 5, 2003
' 7 FENOC Agenda
- Introductions
- Objectives
- Background
- Plans to Modify MAAP Code
- Potential Impact on Containment Design Pressure
- Modified MMP Submittals
- Potential Impact on License Amendment Requests
- Staff Comments & Discussion
- Conclusions FENOC 1
Objectives
- Advise Staff on Going Forward Plans on:
- Revised Containment Analysis
- Containment Conversion
- Best Estimate LOCA Analysis
- Large Power Uprate
- Schedules
- Obtain Staff Feedback on Plans FENOC
Background
- Westinghouse Submitted MMP5 Topical March 2001
- BV Atmospheric Containment Conversion License Amendment Request (LAR) Submitted June 2001
- Dependent on MMP5 Topical
- Containment Conversion Assumed in Best Estimate LOCA LAR and Large Power Uprate Efforts FENOC 2
Modified MAAP Code
- MMP5 Topical Report Withdrawn
- Revising MAAP to Align with Previously NRC Approved Methods
- Removed Forced Convection and Entrainment
- Incorporating Tagami/Uchida Heat Transfer
- Treatment of LOCA Blowdown Consistent with GOTHIC (Aerosols)
FENOC Modified MAAP Code - continued
- Single Node Model with Tagami/Uchida Heat Transfer used for Calculating:
- Peak Pressure
- EQ Temperatures
- Liner Temperatures
- Multi Node Model with Conservative Heat Transfer used for Calculating:
- SBLOCA Sump Water Level FENOC 3
Modified MAAP Code - continued d Benchmarking Modified MAAP against GOTHIC
- Benefits of Modified MMP
- Improved Accounting of Water Holdup for NPSH, Water Inventory and Debris Transport Calculations
- Supports Timely Submittal
- Provides Common Platform for PRA &
Containment Applications FENOC Potential Impact on Containment Design Pressure.
- Evaluating Changes that Effect Containment Peak Pressure
- Initial Containment Pressure Condition
- MSLB Mass & Energy Releases
- Heat Sinks
- May Require Increasing Design Pressure FENOC 4
Modified MAAP Submittals
- Current Containment Conversion LAR
- Partial Withdrawal of non Alternate Source Term/Control Room Habitability Portion
- Pre-application Submittal - Fall 2003
- Revised MMP Methodology Description
- Revised MAAP Benchmarks to International Standard Problems and Other Approved Applications
- Revised Input Parameters Including Revised Mass & Energy Releases for MSLB
- Key Containment Analysis Results FENOC 5
Potential Impact on License Amendment Requests (tARs)
- Revised Containment Conversion LAR
- Expect to Submit June 2004
- Stand Alone, No Topical Report
- Withdraw & Resubmit After Revised Containment Conversion LAR is Submitted
- Planned Large Power Uprate LAR
- Expect to Submit 1st Quarter 2004
- Implementation in 2006 FENOC NRC Staff Comments & Discussion
- Containment Analysis Methods
- Staff Review Approach FENOC 6