National Nuclear Laboratory

News archive - September 2025

UKNNL’s Nassia Tzelepi Receives ASTM International’s Highest Honour 

UKNNL congratulates Nassia Tzelepi, our Senior Fellow for Graphite Technology, on being presented with American Society for Testing and Materials (ASTM) International’s highest honour – the Award of Merit.

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Latest Case Study Series Showcases Our Science and Technology Innovations 

UKNNL congratulates Nassia Tzelepi, our Senior Fellow for Graphite Technology, on being presented with American Society for Testing and Materials (ASTM) International’s highest honour – the Award of Merit.

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Advancing Technology for Safer Monitoring of Nuclear Waste 

UKNNL congratulates Nassia Tzelepi, our Senior Fellow for Graphite Technology, on being presented with American Society for Testing and Materials (ASTM) International’s highest honour – the Award of Merit.

Find out more