Good Practices In Heavy Water Reactor Operation

Dated June 2010

This publication provides an overview of the various plant life management (PLiM) methodologies, technologies and processes to ensure long term operation of heavy water reactors (HWRs). Implementation of a systematic and comprehensive PLiM programme, such as that outlined in the publication, goes a long way towards meeting the overall goal of HWR owners and operators to successfully achieve design life and continued operation. Included in this publication are technical aspects of HWR PLiM, component specific technology considerations for condition assessment, an example of a proactive ageing management programme, and Ontario power generation experiences. Country reports from Argentina, Canada, India, the Republic of Korea and Romania are attached in an annex in order to share practices and experiences of PLiM programmes.

This report contains practical guidance for performing accident analysis for nuclear power plants with pressurised heavy water reactors, based on current international good practice. It covers key aspects required including selection of initiating events and acceptance criteria, computer codes and modelling assumptions, the preparation of input data, presentation of results and quality assurance.

Outlines the characteristics of heavy water reactors and provides an insight into the technology for specialists in countries where the establishment of nuclear power programmes is being considered. This report should serve as a reference for engineers and scientists working in the field, as well as for lecturers in nuclear technology.