7.14. The following observations are relevant to the transparency and traceability of safety assessment: @@- The assessment methodology should be clearly structured and presented, and the assumptions and the basis for the assumptions should be clearly presented. Well defined and documented methods should be used in identifying features and processes, in designing tests and experiments, and determining the necessary instruments, in interpreting test results, in constructing conceptual models, and in analysing and evaluating the models. @@- Consistency between assumptions should be sought, along with consistency in the range of parameter values over which the assumptions are appropriate.@@- Consistency should be achieved among all stages of safety assessment, and with the main objectives and approach at each stage of safety assessment.@@- The evolution of the assessment from one iteration to the next should be transparent to interested parties (e.g. explanations of new data or reasons for changing components of the conceptual or mathematical model should be provided), in order to avoid giving an impression that the assessment is being manipulated to give more favourable results.@@- Confidence should be built by selection of an assessment methodology that is compatible with international experience and guidance.@@- A formal set of management system procedures should be developed, and evidence should be provided that these procedures have been applied. @@- As part of the management system procedures, a comprehensive system for the recording of detailed information on all aspects of the facility and its safety case, including safety assessment, should be established and maintained.@@- Accurate and direct references to the appropriate literature should be provided.