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NRC to add new items to categorical exclusions list
The Nuclear Regulatory Commission has identified five categories of action to add to its list of categorical exclusions to reduce its documentation work under National Environmental Policy Act (NEPA) procedures.
These revisions are included in the final rule, “Categorical exclusions from environmental review,” which was published in the Federal Register on March 30. The final rule will become effective on April 29.
Genichi Matsumoto, Soichi Doi, Kohei Ohkubo, Yasushi Ikeda
Nuclear Technology | Volume 68 | Number 1 | January 1985 | Pages 94-101
Technical Paper | Analyse | doi.org/10.13182/NT85-A33570
Articles are hosted by Taylor and Francis Online.
To investigate the feasibility of applying a porta-ble neutron generator for neutron radiography (NR), an underwater NR facility was designed and constructed in the water pool in a hot laboratory. By using the system, including neutron converters and films, it was possible to obtain NR images within ∼10 min. Various characteristic tests and photography by both emulsion and tracketch methods were carried out for various objects containing irradiated nuclear fuel samples. Some combinations of the converter and x-ray films, such as gadolinium foil/Type AA, were found to be suitable for NR in this case, but the much more sensitive converter NE426 was able to reduce the exposure time considerably. The strongly irradiated nuclear fuel samples were successfully photographed by CA-8015 track-etch films with a 10BN converter.
