ML13093A191
| ML13093A191 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 04/03/2013 |
| From: | NRC/RGN-III |
| To: | |
| References | |
| Download: ML13093A191 (2) | |
Text
Palisades Surveillance Capsules
- Purpose of surveillance
- Monitor embrittlement of specific steels in specific plants
- Provides advance information on pressure vessel condition
- Provides data for predictive models
- Data sources for Palisades
- Initial program
- 8 irradiation
- 2 thermal
- Supplemental program
- 2 irradiation
- Other Plants
- Indian Point 2&3
- H.B. Robinson 2 1
Pressure Vessel Surveillance Capsules Surveillance Samples
Palisades Surveillance Data Some Technical Details Program complies with ASTM-185(1966) 10 CFR 50 Appendix H not in force when Palisades was licensed Included high-Cu weld, but not exactly same as in Palisades pressure vessel Palisades supplemented surveillance program to get data on limiting weld 2 capsules in Palisades 8 capsules in other plants (HBR, IP) 4 capsules remain in Palisades. One more will be pulled before 2031.
2
- Palisades embrittlement known from 1st capsule pull in 1978
- Licensing dates lie well within data (no extrapolations)
- Data follows expected trends Dates 78 83 93 03 98 00 Palisades End of License xx: Date capsule was pulled &
tested 10CFR50.61 Screening Criteria (Years of Reactor Operation)