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Analysis of the contribution of natural sources of radiation to the total dose received by workers

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People working with ionising radiation are receiving radiation coming from artificial and natural sources. In Spain, as in many other countries, there is a serious control by the national authorities, Spanish Nuclear Safety Council, of the dose the workers receive from artificial sources. However, until the publication of the European Basic Safety Standards Directive, 96/29/EURATOM, the old criteria referring to the "above natural background" were widely used. This directive was incorporated to the Spanish legislation in July 2001 (BOE 178); in its Title VII it recommends to evaluate the dose coming from natural sources and take it into account for establishing the safety criteria. It is noteworthy to assess the natural doses received at homes and the dose received by workers of radioactive installations subject to regulations, and to compare the two results. The social and economical implications of the results derived can be important in the practical application of the recommendations included in the above-mentioned BOE 178 Directive.
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Bibliogr. 14 poz.
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