ML022470274
| ML022470274 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 08/29/2002 |
| From: | Office of Nuclear Reactor Regulation, Virginia Electric & Power Co (VEPCO) |
| To: | |
| Burton W, NRR/DRIP/RLEP, 301-415-2853 | |
| References | |
| Download: ML022470274 (6) | |
Text
Flow Accelerated Corrosion Predictive Analysis Methoddlogy CHECWORKS Parameter Allowable Input Actual Values Steam rate Velosity Steam quality Op. Temperature CONCLUSION: All values within parameters Enclosure I
Flow Accelerated Corrosion Predictive Analysis Methodology FAC affects carbon steel components in steam cycle where process temperature exceeds 2000 F North Anna and Surry use standardized programs to predict, detect, and monitor for FAC based on EPRI Guidlines EPRI CHECWORKS code is used to evaluate changes Conditions are bounded by CHECWORKS parameter ranges
Flow Accelerated Corrosion Programatic Controls FAC wear rates based on predictive analysis and actual inspection results:
Largest wear rate is ??? mils/year Largest wear rate found in ??????? system Inspection of susceptible lines will continue and compare predictions with inspection results
Flow Accelerated Corrosion Conclusion North Anna and Surry have effective FAC program which monitors susceptible piping for degradation caused by FAC Inspection data is incorporated into the FAC program and thus the program is continuously fine tuned The FAC program will ensure that components susceptible to FAC will be managed during the period of extended operation
- Dominion Surry and North Anna License Renewal Applications Secondary Piping & Component Inspection AMA 07-Aug-02 Chart Title 1200 800 600 200 0#
N 3/4 N
1/4~
"-u-Tot4 planned Replacrtlrlts Linear (Total Planned Replacements) 7
ODominion Secondary Piping & Component Inspection AMA 07-Aug-02 Surry and North Anna License Renewal Applications Chart Title 250 200 150 100
-Tota Inspection Replace-m Linear (Total Ins pection Replacem ents-)-
6