Decree of the Czechoslovak Atomic Energy Commission No. 9 as of 16 May 1985 on ensuring nuclear safety of nuclear research facilities

Based on the State Surveillance over Nuclear Safety of Nuclear Facilities Act No. 28/1984, the Decree stipulates binding procedures to be adhered to by bodies, organizations and personnel responsible for the design, construction, commissioning, start-up, trial and permanent operation, reconstruction and decommissioning of nuclear research facilities. In addition to general nuclear safety requirements, the Decree sets requirements placed on in-service inspection, radiological protection of the facility environs, radiological protection within the facility, provisions against equipment failures, heat removal, fire protection, protection against effects arising from natural or man-made factors beyond the facility, protection against adverse human activities, and conditions for versatile uses of the facility. The Decree specifies requirements to be met by the reactor core design and by the instrumentation and control system, accident prevention system efficiency, links between the control and protective/preventive functions. Requirements are set for the research reactor cooling system, primary circuit design, quality control and in-service inspection, coolant makeup and purification system, residual heat removal system, emergency core cooling system and its in-service inspection, and secondary circuit design. Ionizing radiation protection principles are also laid down, covering ionizing radiation monitoring, ventilation and filtering systems, and radioactive substance releases into the environment. Conditions are set for the operation, reconstruction and decommissioning of nuclear research facilities: general provisions, personnel qualification and competence requirements, nuclear fuel handling, and limits and conditions. Requirements for physical and power start-up are also specified, as are requirements placed on security and emergency provisions. The Decree entered into force on 1 July 1985. (J.B.)