1 / 18

ANTIOXI Description of Work Packages 3 and 4

ANTIOXI Description of Work Packages 3 and 4. Klas Lundgren. Large difference between plants: Influence of HWC, Zn, Cu Ni/Fe, Co, pH, T, (power uprating), decont., etc?.

nina-blackwell
Download Presentation

ANTIOXI Description of Work Packages 3 and 4

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ANTIOXIDescription of Work Packages 3 and 4 Klas Lundgren

  2. Large difference between plants:Influence of HWC, Zn, Cu Ni/Fe, Co, pH, T, (power uprating), decont., etc?

  3. Example of dramatic increase of radiation fields on non-decontaminated PLR piping in European BWR (natZn  DZO, NWC  HWC, Brass  Ti condenser)

  4. BWR example: Significant variation in electrochemistry conditions in the circuit needs to be considered

  5. WP3: Critical evaluation of BWR, PWR and VVER data and benchmarking of proposed model • BWRs: • Scandinavian (11) • RW data, FW data, radiation buildup data (outages and online) • Radiolysis modeling (NWC, HWC), Zn, Fe, Cond, decontamination, etc. • Status: Data collection completed, data processing ongoing. • Report: End of March 2007 • PWRs: • Ringhals 2/3/4 (Some German PWR(s)? Inc 800, Zn) • RW data, radiation buildup data, pH-control (B/Li), SG material (Inc 600, Inc 690) • Status: Data collection from Swedish PWRs complete • Report: End of May 2007 • VVERs: • Finnish and Bulgarian (4) • RW data, radiation buildup data, pH-control (B/K/NH3), SG material (SS) • Status: Data being asked for • Report: End of July 2007 • Literature review: • Existing methods to control the activity buildup power plant conditions • Report:

  6. Example: B2 – RW chemistry data

  7. Example: B2 – RW activity data

  8. Example: B2- RHR gamma scan and dose rate data

  9. B2 – Co‑60 – On-line gamma scan data on RHR pipe compared to reactor water activity

  10. B2 – Mn‑56 – On-line gamma scan data on RHR pipe compared to reactor water activity

  11. B2 – Co‑58 – On-line gamma scan data on RHR pipe compared to reactor water Zn

  12. O2 – On-line monitoring of crud contribution to RHR dose rates (4 locations) compared to reactor water Zn

  13. Ringhals PWR: Removal of Ni during shutdown transient

  14. R2: Co58 removal during shutdown transient

  15. BwrCrud  LwrCrud The BwrCrud code will be used and modified to also cover PWR and VVER conditions

  16. WP4: Development and testing of an integrated corrosion and activity buildup model • BwrCrud  LwrCrud • Simplified fuel crud model • Model implementation from WP1 and WP2 • For system surfaces • Validation based on WP3 data • BWRs: Zn, NWC/HWC, Low/high Fe, decontamination, etc. • PWRs and VVERs: pH and radiolysis control, SG material, (Zn), shutdown procedures, etc. • Deliverables • Report + Scientific publication or full text conference presentation • Schedule • During 2008

More Related