Response to West Cumbria MRWS consultation: Why a deep nuclear waste repository should not be sited in Cumbria By David K. Smythe Emeritus Professor of Geophysics, University of Glasgow La Fontenille 1, rue du Couchant 11120 Ventenac en Minervois France
[email protected] www.davidsmythe.org March 2012 Prof D K Smythe Response to MRWS consultation Page i NON-TECHNICAL EXECUTIVE SUMMARY The Managing Radioactive Waste Safely (MRWS) process uses the unique concept of a ‘volunteer approach’ to siting a deep geological nuclear waste repository. There a suspicion of predetermination because the only district that has come forward is West Cumbria. A national site search based on geological criteria was carried out in the 1980s. The site finally selected was Longlands Farm, near Sellafield, but this was very different, geologically, from the ‘Sellafield’ in the original list of 437 potential sites. Criteria were manipulated and the site location moved twice, to ensure that a near-Sellafield location was chosen. But the Inspector at the Public Planning Inquiry of 1995-96, held to determine whether Nirex could go ahead at Longlands Farm, rejected Nirex’s proposals. He said that the underground laboratory was the precursor to a full underground repository, that the site had been chosen on manipulated criteria, that the geology and hydrogeology were unsuitable, and that some of the ‘more promising’ sites elsewhere in England should be investigated instead. National and international guidance on how best to select potential sites for deep geological nuclear waste disposal is being ignored. Among the desirable criteria cited the same themes emerge; of geological simplicity and slow, predictable groundwater flow, because the final and most important barrier to escaping radioactivity is always the natural geology.