Gomes R S, Lopes Gomes J D R, Costa M L L, Miranda M V F E S
Comissão Nacional de Energia Nuclear, Diretoria de Radioproteção e Segurança Nuclear, Rua General Severiano 90, 22290-901-Rio de Janeiro/RJ, Brazil.
J Radiol Prot. 2013 Dec;33(4):839-53. doi: 10.1088/0952-4746/33/4/839. Epub 2013 Oct 1.
Radiation sources have being widely used in industrial applications, but their inappropriate use presents a large potential for hazards to human health and the environment. These hazards can be minimised by development of specific radiation protection rules and adequate procedures for the handling, use and storage of radiation sources, which should be established in a national normative framework. Recently, due to discovery of new oil and gas reservoirs on the Brazilian continental shelf, especially in deep water and the pre-salt layer, there has been a large and rapid increase in the use of radiation sources for well logging. Generic radiation protection regulations have been used for licensing the use of radiation sources for well logging, but these are not comprehensive or technically suitable for this purpose. Therefore it is necessary to establish specific Brazilian safety regulations for this purpose. In this work, an assessment is presented of the relevant radiation protection aspects of nuclear well logging not covered by generic regulations, with the aim of contributing to the future development of specific safety regulations for the licensing of radioactive facilities for oil and gas well logging in Brazil. The conclusions of this work relate to four areas, which include the specific requirements to control (1) radiation sources, (2) radiation survey meters and (3) access to radiation workplaces and (4) to control and identify the workers who are occupationally exposed.
辐射源已在工业应用中广泛使用，但其不当使用对人类健康和环境构成了巨大的潜在危害。通过制定特定的辐射防护规则以及针对辐射源的处理、使用和储存的适当程序，可以将这些危害降至最低，这些规则和程序应在国家规范框架内制定。最近，由于在巴西大陆架，特别是在深水和盐下层发现了新的油气藏，用于测井的辐射源的使用大幅快速增加。通用的辐射防护法规已被用于对测井辐射源的使用进行许可，但这些法规并不全面或在技术上不适用于此目的。因此，有必要为此制定巴西的特定安全法规。在这项工作中，对通用法规未涵盖的核测井相关辐射防护方面进行了评估，目的是为巴西油气测井放射性设施许可的特定安全法规的未来发展做出贡献。这项工作的结论涉及四个领域，包括控制（1）辐射源、（2）辐射测量仪、（3）进入辐射工作场所的特定要求，以及（4）控制和识别职业受照工人。
