HOW TO VALUE AND TRANSMIT NUCLEAR INDUSTRY LONG TERM KNOWLEDGE

Abstract

The French nuclear industry deals with technologies which will soon be thirty years old. If suchtechnologies are not renewed they must last for another ten years- or more if the decision is takento keep them working. There is a risk of technological obsolescence- something which is allowedfor in other national and international projects. There is also the question of constant commercialdemand- something also considered elsewhere in establishing contracts. Another problem is nowbeginning to emerge; the continuity and transmission of knowledge and experience concerningthese plants. Personnel in the energy sector are being renewed. Most current employees are dueto retire in the course of this decade. How is knowledge (both of maintenance and planning) to betransmitted to the new generations ? This knowledge includes written information but also knowhowand implicit working assumptions; expertise, experience, self-learning…In the United States the EPRI produced a technical dossier [EPRI 1]. The problem of knowledgeof old technologies is therefore recent, but almost universal. As far as EDF knows, nobody isconsidering this subject in its entirety. Instead, each technology puts the emphasis on operation(and thus safety) according to a fixed timetable (ten-year visits, end of use). In this perspectivethe initial knowledge can be lost. It can happen, for example, that the need for renewal can obligethe agency to carry out a costly or difficult retro-engineering project so as to recover the originalknowledge and technology. If we look ahead, the policy of long term development (notablyextending the life of plants) requires us to consider the life-span of the different skills andknowledge required by each environment. So it is necessary to take into account the entire lifecycle of a nuclear installation.We are working on organizing all this knowledge and building an innovating solution for easyacquisition, access and sharing knowledge and experiences. First we are creating an ontologybasedcommon language for all involved and defining some applications on Intranet. Ontology,understood as an agreed vocabulary of common terms and meanings shared by a group of people,is a means for representing craft concepts upon which knowledge can be organised and classified.We shall present one of the first applications based on the Logic Diagrams Designer's ontologywhose main goals are to keep in memory the craft knowledge about relay circuits schemas and toallow accessing and retrieval information. This choice of ontology as a basis provides an easyand relevant navigation, indexing and search of documents...

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