ADVERTORIAL FEATURE | GNS
GNS – More than just the inventors of the Dual Purpose Casks!
Based on its unique nuclear experience of more than five decades, GNS offers
comprehensive solutions for the management and disposal of spent fuel and all types of operational radioactive waste, as well as for the decommissioning and dismantling of nuclear power plants.
Below: First loading of a CASTOR® geo24B at the Belgian nuclear power plant Doel
Throughout its 50-year history, the German company GNS (Gesellschaft für Nuklear-Service mbH) has always served the needs and requirements of its customers: the operators of nuclear power plants and nuclear facilities. Originally founded as a packaging and transport specialist, GNS quickly became a pioneer in the field,
developing ductile cast iron (DCI) casks for ILW transport and storage in the mid-1970s. These have long been known as MOSAIK® casks and, with more than 9,000 units already in use, are among the most successful heavy shielding casks in the world today. Soon after, GNS engineers introduced the world’s first
dual-purpose cask for spent fuel: the CASTOR®, also made of DCI. The first CASTOR® was loaded in Switzerland in 1983 and remains safely stored at the ZWILAG facility to this day. Today, more than 2,000 CASTOR® and CONSTOR®
casks are deployed across four continents, making GNS the global leader in shielded transport and storage casks. Deliveries to international customers are contracted until well beyond 2040, and GNS is already developing packaging concepts for future deep geological repositories. But GNS’s expertise extends far beyond packaging. Back in the 1980s GNS established a waste management division to meet growing customer demand. For over three decades, GNS has managed all radioactive waste and spent fuel from Germany’s nuclear power plants. Following the country’s nuclear phase-out, GNS expanded its services to include full decommissioning support – from defueling to dismantling and packaging of reactor pressure vessels and their internals as well as other primary circuit components. Sophisticated activation calculations ensure efficient segmentation and minimal radiation exposure. Decommissioning orders from operators abroad are also proof of GNS’s competitiveness. GNS’s portfolio includes the design and manufacture
of containers for high-, intermediate-, and low-level waste, as well as the construction and operation of conditioning facilities. GNS treats both solid and liquid radioactive waste to ensure compliance with interim storage and final disposal requirements. This process involves extensive data collection and documentation. To support this, GNS offers advanced software and database solutions for tracking operational and decommissioning waste. With around 1,000 employees and an annual turnover
of more than €350 million, the GNS Group continues to deliver on its promise: Excellence for Nuclear. ■
22 | July 2025 |
www.neimagazine.com
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