Summary OPERA Safety Case
|Author||Covra, E.Verhoef, E.Neeft, N.Chapman, C.McCombie|
|Classification||1.01.4.30/73 (WASTE - GEOLOGICAL DISPOSAL IN SALT/CLAY)|
|Remarks||Available at https://www.rijksoverheid.nl/documenten/rapporten/2018/01/29/opera-safety-case|
From the publication:
Summary The principal objective of this report is to present an overview of the results and conclusions of the OPERA Safety Case for a geological disposal facility (GDF) in the Boom Clay, which will contain almost all radioactive wastes arising in the Netherlands. Because it marks a major milestone in the Dutch radioactive waste management programme, the report also covers other research performed in the framework of the wider OPERA research programme. The OPERA programme and future work on geological disposal is being structured around the development of a series of Safety Cases for a GDF in the Netherlands. The national context of the geological disposal programme, the wider than usual range of objectives and the wide target readership, mean that there are significant differences between the Initial Safety Case presented here and recent national Safety Cases published in other countries. The OPERA Safety Case is less comprehensive, given that it is an initial analysis that will be followed by further iterations. This initial Safety Case covers only one of the options for geological disposal that are being studied in the Netherlands. The report focuses on clay as a host rock but the option of disposal in salt remains open and no siting decisions will be taken in the Netherlands for many decades into the future. On the other hand, the report is wider in scope than many other national Safety Cases. To make the report accessible to a wide readership, explanatory material has been included to describe the basic concepts involved in geological disposal and to summarise the current international consensus on the recognised approaches to achieving safety and to structuring a technical Safety Case for a GDF. In addition, proposals for future scientific and technical studies have been developed, using the information gathered during preparation of the Safety Case. These are presented in a roadmap, laying out all COVRA’s (Centrale Organisatie Voor Radioactief Afval) ongoing activities leading eventually to implementation of a GDF in the Netherlands. The present report is a scientific/technical document. It describes engineering and geological requirements needed to assure that a safe GDF can be implemented in the Netherlands. The OPERA project team is, however, fully aware that a successful GDF programme must address both technical and societal issues. OPERA has initiated work on communication with the Dutch public, to which this report is a contribution. A separate, complementary synthesis report deals with the wider, societal issues of disposal, including stakeholder engagement and conditions for an inclusive process for long-term decision-making on disposal [Heuvel van den, 2017]. This report by the OPERA Advisory Group also provides recommendations on how this important issue will be continued in future projects.