DS397 Saf Use Mod RRs with NUSSC comments 18-06-2010

movable provisions (i.e. shielding, ventilation provisions) to facilitate handling operations)should be demonstrated to be adequate to deal with the worst possible situation.9.4. The equipment for the handling, dismantling and safe storage or disposal of irradiatedmaterials and devices should be procured and tested in advance.9.5. The operations should be planned such that the personnel exposures and the amountsof radioactive materials released are minimized. Measures necessary to prevent contaminationshould be developed.9.6. If the irradiated equipment can release airborne contamination, a handling process toprevent this release should be developed, (e.g. by keeping the material in leak tight containersor by providing a system of negative pressures and filters). Criteria for items important tosafety (e.g. single failure criterion, to ensure that no single failure or single maintenanceaction or any other single human action could disable a safety function, redundancy) shouldbe used in planning such a process. The requirements are presented in Ref. [2].9.7. Decontamination schemes should be developed for all surfaces that may becontaminated by the experiment. The storage or disposal of decontaminants should beensured.SPECIFIC RECOMMENDATIONSTraining9.8. All documentation describing the sequence of operations and the instructions foroperating the equipment should be known to the personnel and should be available throughoutthe time of handling, dismantling, post-irradiation examination and storage of irradiatedelements until final disposal.9.9. The personnel performing the handling, dismantling, post-irradiation examination andstorage of experimental device should be given the necessary training in all aspects of theseoperations, including, if necessary exercises with mock-ups, before work with irradiatedobjects is undertaken. A method for determining the effectiveness of training should be inplace.37