ML030150628
| ML030150628 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 01/14/2003 |
| From: | Gerber D NRC/NRR/DRIP/RLEP |
| To: | |
| Arrighi RJ, NRR/DRIP/RLEP, 301-415-3936 | |
| References | |
| Download: ML030150628 (3) | |
Text
Fatigue Monitoring LAN Server
- at oackus
Contact:
- Results Storage David A. Gerber Structural Integrity Associates 3315 Almaden Expressway, Suite 24 San Jose, CA 95118
" I(408) 978-8200 FatiguePro PC.s FAX: (408) 978-8964 Fatguemalysis Review Results SPirl E-mail: dgerber@structint.corn Web Site: www.structint.corn V
Structural Integrity Associates
"* Fulfills Plant Technical Specification Transient Counting Requirements
"* Best Approach for Addressing NRC Issues
- Bulletins 79-13, 88-08, 88-11
+ Pressurizer Surge Line Stratification and Pressurizer Insurge/Outsurge addressed using actual plant data
- Reduced Fatigue Usage Compared to Design Projections
- Significantly More Knowledge of Plant Cycles
- Focused evaluation of critical areas
- Ability to assess alternate operating approaches
- Ability to rapidly evaluate plant transients
- Plant Life Extension
- Projected fatigue usage and cycle counting estimates
+ Required to demonstrate fatigue is adequately managed
- Environmental fatigue issues require more refined approach
+ Implementation now will require significantly less effort later
- Simulation Capabilities to do "What-If" Studies PRS-02-006-2/2 Structural Integrity Associates BACKGROUND
"* Stress-Based Fatigue Monitoring
- Stress-based fatigue (on-line stress analysis) for critical components
+ Takes account of actual plant transient severity and number of occurrences
- Powerful graphics review of all relevant plant parameters, resulting stress, and fatigue usage
"* Automated Cycle Counting and Cycle-Based Fatigue Monitoring
+ "Smart logic" counts and categorizes plant transients
+ All events and important parameters saved by software
- Fulfills plant Technical Specification cycle counting requirements
- Powerful, graphics review of all events
+ Cycle-based fatigue, utilizing cycle counts, for less severe components "o Fatigue Crack Growth Monitoring
- Performs fatigue crack growth flaw tolerance assessments (actual or postulated flaws)
- Takes account of actual plant transient severity and number of occurrences
- Can be used to justify continued operation or determine re-inspection interval PRS-02-0O6-2/3 Structural Integrity Associates SUPPORT AREAS