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Technical Meeting on Unified Procedure for Lifetime Assessment of Components and Piping of VVER Nuclear Power Plants during Operation (VERLIFE), Rez, Czech Republic, 11-13 March 2009
Within the framework of activities under the IAEA regional project RER 4/030 "Strengthening Capabilities for Nuclear Power Plant Performance and Service Life including Engineering Aspects", the first technical meeting on upgrade of current VERLIFE 2008 procedure (Unified Procedure for Lifetime Assessment of Components and Piping of VVER NPPs during Operation), was held on 11-13 March 2009 in Rez, Czech Republic. Latest version of VERLIFE procedure (2008) is being used as a Guideline document for life assessment of components in countries operating VVER type of reactors.
The project will be implemented during three years from 2009 to 2011. The effort is focused on upgrade and expansion of the current VERLIFE procedure. This will be done through series of technical meetings and small group meetings. The results will be introduced and presented through the final workshop.
Detailed discussion was held to all proposed new Appendices to current VERLIFE procedure:
| Appendix A: | LBB assessment procedure of VVER piping during operation |
| Appendix B: | No-break-zone assessment procedure of VVER piping during operation |
| Appendix C: | Integrity and lifetime assessment procedure of RPV internals in VVER NPPs during operation |
| Appendix D: | Procedure for risk informed approach for ISI of piping |
| Appendix E: | Recommended procedure for NDE qualification |
| Appendix F: | Component and Piping Supports |
The importance of unified design fracture toughness curve for RPV materials has been stressed. An unified database of fracture toughness data should be created. The proposal for input of data from national databases will be discussed.