Destructive examinations are often necessary. Initially, such tests are often made with separate plates, but lately, using entire elements. In all cases when new fuel is proposed, there is a need, for safety reasons, to test it, especially regarding the mechanical evolution due to burn-up (swelling, etc.). In these cases research is made either on silicide with higher density, or on other types of fuel (UMo, etc.). This would permit some plants to convert without losses in flux or in cycle length and would allow new reactor projects to achieve higher possibilities especially in fluxes. However, a need exists for research on new reactor fuel. The two types of fuel most frequently used by the main research reactors are metallic: highly enriched uranium (>90%) and silicide low enriched uranium ( 3. Testing of research reactor fuel in the high flux reactor ( Petten) Work continued on thirty irradiation projects and ten development activities
The average annual occupation by experiments was 55% as compared to 38% in 1973. Equipment for irradiation experiments has been replaced and extended. International Nuclear Information System (INIS)Īfter conversion to burnable poison fuel elements, the High Flux Materials Testing Reactor (HFR) Petten (Netherlands), operated through 1974 for 280 days at 45 MW. High Flux Materials Testing Reactor (HFR), Petten
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