Handling and movement of all nuclear fuel in the UK is controlled by legislation which is described in detail in Chapter 4. Attached to the station site licence

are conditions which relate specifically to the storage and carriage of nuclear fuel and also to the formula­tion of Station Operating Rules, in which the obligation to carry out the various Criticality Safety Assessments described in the previous section is formally laid down bv the CEGB as an instruction to the appropriate power station manager. The work involved is under­taken by a nominated assessor, who prepares a Cri — ticalitv Safety Submission’ (which includes the ‘Assess­ment’) for subsequent consideration by a Criticality Safety Panel, consisting of the Station Manager and representatives of the CEGB Headquarters Depart­ments and Divisions. If the panel agree to the pro­posals contained within the submission, clearance is reported to the Nuclear Safety Committee and the Station Manager then formally signs a ‘Criticality Safe­ly Certificate’, an intrinsic part of the original Cri­ticality Safety Submission, copies of which will be kept in Station Operating Manuals. He then ensures that the appropriate area(s) of the fuel route at the power station displays a copy of a relevant notice containing all related essential guidance and restrictions to be observed in practice and which will therefore guarantee the avoidance of criticality at all times. The full pro­cedure for gaining criticality safety clearances is set down in a formal document issued by the CEGB.