Safety concepts and principles

Application of the concept of defence in depth in the design of the research reactor provides a series of levels of defence (inherent features, equipment and procedures) which are aimed at preventing accidents and ensuring appropriate protection in the event that prevention fails. However, defence in depth shall be applied with account taken of the graded approach as mentioned in Section 1 and of the fact that many low power research reactors do not qualify for the fifth level of defence or even for the fourth level. 

The licensee is the holder of a current hcence issued by the regulatory body granting authorization to perform specified activities relating to the research reactor fadhty. The applicant becomes the hcensee on receipt of a hcence issued by the regulatory body. 

General requirements to fulfil the principle concerning quality assurance programmes are established in the IAEA Code and Safety Guides on Quality Assurance for Safety in Nuclear Power Plants and Other Nuclear Installations [9] (see footnote 14). While some of these requirements are quoted in Section 4, the present Safety Requirements publication also includes specific requirements in respect of quality assurance for nuclear research reactors. 

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Type A, relating to fundamental safety concepts and principles... 

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