BS ISO 23133:2021 pdf free.Nuclear criticality safety — Nuclearcriticality safety training for operations.
BS ISO 23133 Training in nuclear criticality safety shall be provided with due consideration of the nature of the workoperations staff perform and the sensitivity of that work in maintaining nuclear criticality safety.
Operations staff working according to procedures that are required to maintain nuclear criticalitysafety will require a greater extent of training than those staff who do not perform those duties orthose who perform tasks that are intrinsically less sensitive for maintaining nuclear criticality safety.EXAMPLE Staff in a facility handling inventories of multiple critical masses, with nuclear criticality safetybased on administrative control of batch sizes, will typically require a higher level of training than a facilityhandling small fractions of a critical mass.
The scope and the level (depth) of training shall be formulated to enable the operations staff to operatea process with sufficient understanding of the criticality hazards associated with that process, and theimportance and reasons behind the controls identified to maintain nuclear criticality safety.
Understanding the reasons behind the controls may reduce the risk of operations staff deviatingfrom procedures and/or responding inappropriately to unexpected process conditions. Analysis ofpast criticality accidents and near-miss data has revealed a number of instances where inadequateunderstanding of the reasons behind the criticality safety controls has been a contributory factor.
Certain roles are particularly important in maintaining nuclear criticality safety. A supervisory roleto operations staff is one such role, as are those roles responsible for making decisions which couldsignificantly affect nuclear criticality safety (e.g. operations manager or shift team leader).These keysafety roles are termed collectively in this document as operations supervisors (as defined in 3.2).
lt is necessary for operations supervisors to have a more comprehensive understanding of the nuclearcriticality safety issues and their significance.This could include understanding of typical or commonthemes that have caused criticality accidents and the need to maintain systems to monitor,maintainand improve nuclear criticality safety in a facility. The specific content of the required training isdiscussed in Clause 6.
Operations supervisor training shall be in addition to the identified training for operations staff andshould be biased to the particular nuclear criticality safety issues associated with the process for whichthey have responsibilities.
Management shall have an awareness of the severity of the consequences of nuclear criticality accidentsand, hence, of the importance of a suitable nuclear criticality safety program.
Management have overall responsibility for the nuclear criticality safety of operations for a site, processor facility and define the nuclear criticality safety program.Management do not require detailed nuclearcriticality safety training because they do not carry out operations and, therefore, rely on operationssupervisors and operations staff to maintain day-to-day criticality safety.BS ISO 23133 pdf download.