en.Wedoany.com Reported - Ansaldo Nucleare has recently completed two modernization projects at Slovenia's Krško Nuclear Power Plant (NEK): an upgrade of the water treatment system and the replacement of the waste gas compressor unit. Ansaldo Nucleare served as the general contractor for both projects, responsible for engineering, procurement, construction, installation, and commissioning. In February 2026, NEK awarded Ansaldo Nucleare a new contract to upgrade the plant's fire protection system, with completion scheduled for 2027.
The water treatment system upgrade was completed in October 2025 and fully operational in April 2026. This turnkey upgrade enhanced operational flexibility and automated the production of demineralized water for reactor feed. The new configuration includes multiple treatment lines and a modern distributed control system (DCS), improving monitoring capabilities and enabling highly automated operation.
The waste gas compressor unit replacement involved replacing two waste gas compressors with new equipment. Ansaldo Nucleare supported the design and supply of heat exchangers, leveraging its ASME certification and expertise in U.S. and European nuclear standards. Due to limited plant space, the compressors were disassembled, transported to the site, and reassembled. Acceptance tests were completed as planned, and the delivery agreement was signed in November 2025.
Daniela Gentile, CEO of Ansaldo Nucleare, stated that these activities have strengthened the long-term partnership with NEK, supporting NEK in maintaining the highest standards of safety, efficiency, and operational reliability by managing complex upgrade projects under demanding conditions. She noted that in 2025, Italy imported approximately 5 TWh of electricity from Slovenia, accounting for about 10% of its total electricity imports, highlighting Slovenia's significant role in Italy's energy landscape.
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