ML030710565
| ML030710565 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 03/12/2003 |
| From: | Donohew J NRC/NRR/DLPM/LPD4 |
| To: | |
| Donohew J N, NRR/DLPM,415-1307 | |
| Shared Package | |
| ML030830280 | List: |
| References | |
| Download: ML030710565 (16) | |
Text
Review of 2002
- May 2002 Meeting with NRR
+ Review of Unit 2 Cycle 11
- CENTS Implementation
- Clad Performance Strategy
- CEA Investigation
- Dry Cask Storage Update 2
I
Agenda Today
- Reactivity Management
- CENTS & RSG/Power U prate
- Fuel Performance
- CPC Replacement
+ CEA Replacement
+ Dry Cask Storage Update Reactivity Management
+ Palo Verde Actions
- Results 2
Overview
+ INPO Identified
- 2001 Plant Evaluation
- Reactivity Management AFI
"* REACTOR ENGINEERING
"* OPERATIONS Palo Verde Actions
+ NFM/Operations/Training Interface
+ Operations Single Point of Contact
+ Xenon Program
- Maneuvering Box
- Procedure Enhancement
+ Training 6
3 a
M-ý LJk I ýL 5
Results
- NO REACTIVITY EVENTS
- Standardized Game Plans
- Improved Inter-Departmental Relationships
- Improved Tools CENTS, RSG, U2 Uprate
- CENTS Implementation Status
- U2 Power Uprate Submittal 4
CENTS Implementation Status
+ U1, U2 Complete - U3 April 2003
+ SABD Revision 20% Complete
+ Two Events Await U2 SER
- Long Term FWLB (PSV Operability)
U2 RSG & Power Uprate
- SABD Supplement In Progress
- U2C12 Reload Safety Analyses Begun
- Actively Participating in Development of SG Startup Test Program 10 5
Fuel Performance
- Integrated Fuel Clad Strategy:
- Advanced Clad Alloys
- Primary Chemistry
- CRUD/Oxide Software
- Low Duty Core Designs
+ Long Range Fuel Inspection Plan N'I 6
Advanced Clad Alloys
- Westinghouse Decision: Low Tin Zirlo
- Alloy A LTA in U3C1O (Spring 2003)
- First Batches of Standard Zirlo &
Columbia Fuel Rod
- U2Cll, UICll (2002)
- U3ClI In April 2003
+ Fuel Handling Accident Rod Pressure 12
\\
- Primary Chemistry
+ Additional RCS Cleaning at EOC Shutdown
+ Early Lithium Injection During Startups
+ Elevated-Coordinated Lithium Strategy
- Currently 7.1 pH
- Hold Until Inconel Corrosion Issue Resolved CRUD/Oxide Software
+ Steaming Rate in Core Design Tools
- Screen Patterns Against U3C9 Benchmark
+ APS CRUD/Oxide Model
- Nodal Level/High Duty Ass'y Rod Level
+ Vendor Fuel Duty Model
- Safety Grade Oxide and FDI Calculations 7
Low Duty Core Designs
+ Increase Feed Batch Size
- 104 vs 96 Assemblies
- Minimal Feed-Face-Feed
- UlCIO Visuals of P1M316
- U2 Uprate Corrosion Strategy
- Zirlo Clad
- Re-design Lattice Pattern IU, Re-Designed Lattice
+ Current Lattice
- 2 Enrichments
- 12 High Enrichment Rods on Each Face
+ New Lattice
- 3 Enrichments
- Same Assembly Average Enrichment
- All Peripheral Rods Low Enrichment
+ Extensive Design Review 16 8
Long Range Fuel Inspection Plan
+ Unit 2, Beginning Fall 2003
- Zirlo Oxidation (R11, R12, R13)
- New Lattice (R12, R13)
- Assembly Bow (R11)
- Higher Burnup Leakers CPC Replacement
- Overview of Changes
- Licensing Schedule 9
CPC Replacement Overview
+ Upgrade to Modern Hardware
- 8 CEA Calculators
- Concurrent Software Language Change
- Preserve Original Functionality & Timing
+ First Installation - Fall 2003 Outage 19 10 CPC Replacement Licensing
- SER on Westinghouse Common-Q
+ Schedule for Formal RA! on PVNGS
- U2C12 Reload Engineering
- No Impact to Safety & Uncertainty Analyses
- PVNGS Supports Joint Meeting 20
CEA Replacement
- Review CEA History
- Determination of New, Conservative Lifetime i
- Design of New Replacement CEAs
+ Replacement of PLCEAs Review of CEA History
- CEA Finger Failures Observed - 2001
- Cracks in High Fluence CEA Tips
- Root Cause - IASCC, Inadequate Testing
- U21U3 With Small Pellet Less Severe
+ All Full Length CEAs Replaced
- Replaced by Design with Smallest Pellet
+ Lifetime Software Abandoned 22 1I
Determination of New Lifetime
- Investigating Various Options
+ Monitoring YGN Inspections
- Inconel IASCC Threshold
. Vendor Has Adjusted Software 23 Design of New CEAs
+ Now: Unique Feltmetal Design
+ Want: Industry Standard AgInCd Tips
+ Tip Region Extended 4 Inches
- Hollow AgInCd Slugs 24, 12
Replacement of PLCEAs
- Original Equipment
- Part Length, Part Strength
- Not Subject to Same Failure Mode
- Reviewing Design Bases
- Replacements
- Full Length, Part Strength
- Transparent to Safety Analysis
- Tech Spec Change Required 25 Dry Cask Storage Update 26 13
Dry Cask Storage Update SCurrent status Unit 2
- Loaded 24 assemblies in first canister March 3
- Shield lid welded March 6
- Completed first vacuum drying period March 8
- March 10 will start 2nd vacuum drying period
.apturing lessons learned from first loading 26
Fuel Loading Schedule
- Complete first canister loading in March, 2003
- Time out for Unit 3 Refueling outage, ends early May, 2003
- Complete Unit 2 campaign in June
- Load 5 casks in Unit 1 later in 2003
+ Plan to load 10 casks per year 27
UMS Amendment 3
- Palo Verde benefits
- Extended vacuum drying times
- Action statements won't require submersion of Transfer Cask and Canister for cooling
- Increased seismic limit
- Increased PWR fuel enrichment limit
+ Anticipate issuance early May 2003 28