4.16.1 If required, further engineering analyses
are used to verify that the design is feasible with respect to intentions
and overall safety in all phases of operation. That is, the analyses
and tests will ensure that the alternative and/or equivalency will
meet expectations from a functional and safety point of view, including
environmental protection. The engineering analyses are performed by
the Submitter. Models used for the analyses, input data and results
are documented and submitted to the Administration for review.
4.16.2 The types and extent of the analyses and
tests required depend on the level of novelty, confidence in analyses
and the extent of experience with similar concepts. While the objectives
of the analyses are primarily to verify function and reliability,
additional objectives of the tests are also to obtain data for analyses
and verify the results obtained from analytical methods. The analyses
and tests are meant to demonstrate additional safety margins compared
to target limits defined in the design basis. The tests are performed
in accordance with the requirements. The Administration should oversee
these tests with experts in relevant areas.
4.16.3 Submittals required with respect to the
analyses and tests include:
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.1 statements of relevant codes and standards
applied and deviations made to their application;
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.2 selection of appropriate evaluation criteria
used to assess the design;
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.3 design calculations;
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.4 analyses reports (including objectives, scope,
assumptions, results, conclusions and recommendations);
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.5 test/simulation reports, including descriptions
of modelling/test set-up, as well as objectives, scope, results, analyses,
conclusions and recommendations; and
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.6 error and uncertainty assessments.