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Expert Mission Service on Preservation of Stored Components and Equipment for Atucha II Nuclear Power Plant, 14–17 July 2008, Atucha, Argentina
The first mission at Atucha II focused on preservation of stored components and equipment took place at the plant site on 23–27 October 2006. The mission objective was to analyse the state of preservation of the Atucha II installed and stored equipment and components regarding their adequacy for further use in the conditions of project restart after a period of more than 10 years delay.
The follow-up mission took place at plant site on 14–17 July 2008. The objective of this follow-up mission was to review the progress on the assessment of the long term preserved and stored mechanical, electrical, I&C and civil components and equipment, as well as the measures which were taken, based on findings and recommendations of the first mission.
Three external experts were invited to perform the mission. The IAEA team realized that comprehensive plans are being prepared and extensive engineering work is underway to continue in erection of all components and equipment during the 2008–2010 and to prepare the plant for the commissioning phase in 2010. Through the review of documents, presentations and discussions with the counterparts, the team confirmed that a considerable progress has been made since the IAEA mission in 2006.
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The following topics were reviewed and discussed:
- solutions for replacement of the old equipment exceeding their design or shelf life
- ageing assessment of mechanical, electrical and I&C components and equipment
- equipment refurbishment programme and database implementation
- criteria to decide which corrective action should be taken on certain components
- structure of plant guidance documentation
- implementation of electronic guidance system.
An important progress took place in all the project areas:
- personnel mobilisation
- freezing of the licensing requirements
- erection activity
- procurement of equipment and services
- assessment of the existing equipment and components at the plant.
References:
- Restarting delayed nuclear power plant projects, Nuclear Energy Series No. NP-T-3.4, IAEA, Vienna (2008).
- Analysis of the state of preservation of stored components for Atucha II NPP and demonstration of fitness for continued use, IAEA, Vienna (2006).