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2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
X-energy raises $700M in latest funding round
Advanced reactor developer X-energy has announced that it has closed an oversubscribed Series D financing round of approximately $700 million. The funding proceeds are expected to be used to help continue the expansion of its supply chain and the commercial pipeline for its Xe-100 advanced small modular reactor and TRISO-X fuel, according the company.
Christian Passard, Alain Mariani, Fanny Jallu, Jacques Romeyer-Dherbey, Hervé Recroix, Michel Rodriguez, Joel Loridon, Caroline Denis, Hervé Toubon
Nuclear Technology | Volume 140 | Number 3 | December 2002 | Pages 303-314
Technical Paper | Radioactive Waste Management and Disposal | doi.org/10.13182/NT02-A3341
Articles are hosted by Taylor and Francis Online.
The development of a passive-active neutron assay system for alpha low level waste characterization at the French Atomic Energy Commission is discussed. Less than 50 Bq[] (about 50 g Pu) per gram of crude waste must be measured in 118-l "European" drums in order to reach the requirements for incinerating wastes. Detection limits of about 0.12 mg of effective 239Pu in total active neutron counting, and 0.08 mg of effective 239Pu coincident active neutron counting, may currently be detected (empty cavity, measurement time of 15 min, neutron generator emission of 1.6 × 108 s-1 [4]). The most limiting parameters in terms of performances are the matrix of the drum - its composition (H, Cl...), its density, and its heterogeneity degree - and the localization and self-shielding properties of the contaminant.
