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Peer Review Service on Safe Long Term Operation for Dukovany Nuclear Power Plant, 21–25 April 2008, Dukovany, Czech Republic
A peer review mission on safe long term operation (SALTO) was provided on 20–25 April 2008 at Dukovany Nuclear Power Plant (NPP) in the Czech Republic. The review covered the areas of basic principles, long term operation (LTO) feasibility including time limited ageing analyses, scoping and screening processes, preconditions for LTO, ageing management and other LTO related activities for mechanical components, electrical and I&C components including equipment qualification and civil structures, and radiological environment impact assessment.
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The IAEA team realized that comprehensive plans are being prepared and extensive engineering work has been launched to review ageing degradations and implement ageing management programmes. In addition, the team noticed good practices and good performances in areas such as follows:
- Corrective measures based of Safety Issues defined by IAEA for VVER 440
- Ongoing cable ageing management programme
- The analysis using the database on I&C reliability recording
- Seismic re-qualification for piping and components
- Design fatigue analyses, Fatigue monitoring
- Data management tool for erosion corrosion
- Post annealing re-embrittlement evaluation
Taking into account of the above mentioned points, the team recognized that the plant approaches and initial preparation work for safe long term operation are in line with international practices. Lessons learned from this mission will be reflected on finalizing the SALTO review guideline.
References:
- Safe long term operation of nuclear power plants, IAEA-SRS-57, IAEA, Vienna (2008)
- Final Report of the Programme on Safety Aspects of Long Term Operation of Water Moderated Reactors, IAEA-EBP-SALTO, IAEA, Vienna (2007)
- Safety guide on ageing management (in preparation), DS 382, IAEA, Vienna (2009)
- Plant Life Management for Long Term Operation of Light Water Reactors, IAEA-TRS-448, IAEA, Vienna (2006)
- Periodic Safety Review of Nuclear Power Plants, Safety Standards Series Safety Guide No. NS-G-2.10, IAEA, Vienna (2003)