INTEGRATED PLANT LIFE MANAGEMENT(PLIM) – THE IAEACONTRIBUTION

摘要

For the past couple of decades there has been a change of emphasis in the world nuclear powerfrom that of building new Nuclear Power Plants (NPP) to that of taking measures to optimize the lifecycle of operational plants. National approaches in many countries showed an increase of interest inPlant Life Management (PLiM), both in terms of plant service life assurance and in optimizing theservice or operational life of NPP. A strong convergence of views is emerging from different Nationalapproaches, particularly in the area of the economic aspects of NPP operation and in the evolution inthe scope of NPP PLIM.The latter can directly affect the cost of electricity from NPP in an increasingly competitiveenvironment. The safety considerations of a NPP are paramount and those requirements have to bemet to obtain and to extend/renew the operating license. To achieve the goal of the long term safe,economic and reliable operation of the plant an integrated Plant Life Management Programme (PLiM)is necessary. Some countries already have advanced PLiM Programmes while others still have none.The PLiM objective is to identify all that factors and requirements for the overall plant life cycle. Theoptimization of these requirements would allow for the minimum period of the investment return andmaximum of the revenue from the sell of the produced electricity.Recognizing the importance of this issue and in response to the requests of the Member States theIAEA Division of Nuclear Power implements the Sub-programme on "Engineering and ManagementSupport for Competitive Nuclear Power". Four projects within this sub-programme deal with differentaspects of the NPP life cycle management with the aim to increase the capabilities of interestedMember States in implementing and maintenance of the competitive and sustainable nuclear power.Although all four projects contain certain issues of PLiM there is one specific project on guidanceon engineering and management practices for optimization of NPP service life includingdecommissioning. This particular project deals with different specific issues of NPP life managementincluding aspects of ageing phenomena and their monitoring, issues of control and instrumentation,maintenance and operation issues, economic evaluation of NPP life cycle management includingguidance on its earlier shut down and decommissioning.