Quality Assurance Aspects of the Environmental Code NECTAR

摘要

This report describes the quality assurance (QA) procedures which have been adopted in respect of the Environment code NECTAR (Nuclear Environmental Consequences, Transport of Activity and Risks). These procedures involve the verification, validation and evaluation of the individual NECTAR modules, namely RICE, SIRKIT, ATMOS, POPDOS and FOODWEB. The verification and validation of each module are considered in turn, while the final part of the report provides an overall evaluation of the code. The QA procedures are designed to provide reassurance that the NECTAR code is free from systematic errors and will perform calculations within the range of uncertainty and limitations claimed in its documentation. Following consideration of a draft version of this report by the Off-site Dose Methodology Working Group, the ATMOS, POPDOS and FOODWEB modules of NECTAR have been endorsed for use by the Board in reactor design and safety studies. (ERA citation 13:014679)