CSM Summary Memory File

In the Manche department, Andra is monitoring France’s first disposal facility for low- and intermediate-level radioactive waste, the Manche disposal facility (CSM), which is currently in its decommissioning-closure phase following the end of operation in 1994.
Some of the radioactive waste that has been disposed of at the CSM can remain hazardous for long periods (several centuries).
Preserving the memory of disposal facilities is therefore a crucial issue for Andra, addressed by the Memory of Radioactive Waste Disposal Facilities for Future Generations program, which has three aims:
• maintain the integrity of and protect sites by avoiding the risk of unintentional intrusion;• facilitate and inform decisions by future generations;
• pass on a scientific and cultural heritage.
he regulatory requirements relating to the Andra memory preservation program were
introduced by Decree 2016-846 of 28 June 2016, Chapter II of which was devoted to radioactive waste disposal facilities; these requirements were subsequently codified in Article R. 593-75 of the Environmental Code.
In particular, they required the preparation, for each Andra disposal facility, of a "Summary Memory File" (dossier synthétique de mémoire - DSM), to include an as-built description of the facility and an inventory stating the location, physicochemical and radiological properties of the waste disposed of at the facility. This file, produced for the general public, is to be widely distributed in the region around the site, but also internationally.
The file was designed in two stages:
• in 2008, Andra produced an initial version, known as the "Precis for Future Generations"; • in 2019, a second version of the file was proposed by Andra as part of the CSM's ten-
year safety review. It meets the DSM criteria stipulated by the 2016 regulations and takes into account the comments made by the French Nuclear Safety Authority (ASN), the French Institute for Radiological Protection and Nuclear Safety (IRSN) and the public.
This second version is presented herein.