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Preliminary Waste Management Plan of European Spallation Source

Ene, Daniela LU (2013) ASME 15th International Conference on Environmental Remediation and Radioactive Waste Management In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management, Vol 1: Low/intermediate-level Radioactive Waste Management; Spent Fuel, Fissile Material, Transuranic and High-level Radioactive Waste Management p.001-029
Abstract
The European Spallation Source (ESS) is the European common effort in designing and building a next generation large-scale user facility for studies of the structure and dynamics of materials. The proposed schematic layout of the ESS facility is based on a linear driver (linac) directing the proton beam (5 MW of 2.5 GeV) of 2.8 ms long pulses with a 20 Hz on a tungsten target where neutrons are produced via spallation reactions. Further the neutrons will be moderated to thermal and subthermal energies in a couple of moderators placed around the target. The moderators feed 22 beamlines guiding the neutrons to the scattering instruments, mainly for neutron scattering research, as has been previously mentioned. The objective of this work is... (More)
The European Spallation Source (ESS) is the European common effort in designing and building a next generation large-scale user facility for studies of the structure and dynamics of materials. The proposed schematic layout of the ESS facility is based on a linear driver (linac) directing the proton beam (5 MW of 2.5 GeV) of 2.8 ms long pulses with a 20 Hz on a tungsten target where neutrons are produced via spallation reactions. Further the neutrons will be moderated to thermal and subthermal energies in a couple of moderators placed around the target. The moderators feed 22 beamlines guiding the neutrons to the scattering instruments, mainly for neutron scattering research, as has been previously mentioned. The objective of this work is to develop a waste management plan for ESS facility. In this respect two important aspects are analyzed. First the present status of the problem is outlined as follow. Estimate types and quantities of waste that the ESS project will generate at different stages: commission, operation, decommissioning were derived using: i) precise Monte Carlo calculations ii) scaling the activity from the operation experience of the existing spallation source installations for waste such it is difficult to predict level of activation or for components of the facility in stage of the pre-conceptual model. Associated waste treatment/conditioning options and final disposal route were further analyzed in order to define the waste type and packet descriptions in agreement with Swedish regulations and policy. It was found that the compilation of completely new waste type descriptions for qualification of the ESS waste for disposal will be necessary. Particular attention was devoted to "problematic waste" as Beryllium reflector, C-14 from graphite used as core zone of the beam-dump and collimators or waste arising from the purification systems of both Helium and water cooling circuits. Management of waste on ESS site: collection/segregation systems, characterization system, storage options, is also described. In the second step, the acquired information is used for planning and implementing actions involving all participants (ESS, treatment facility operator, disposal operator, regulatory body and other authorized authorities). (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management, Vol 1: Low/intermediate-level Radioactive Waste Management; Spent Fuel, Fissile Material, Transuranic and High-level Radioactive Waste Management
pages
001 - 029
publisher
American Society Of Mechanical Engineers (ASME)
conference name
ASME 15th International Conference on Environmental Remediation and Radioactive Waste Management
external identifiers
  • WOS:000337804600029
  • Scopus:84900633642
ISBN
978-0-7918-5601-7
DOI
10.1115/ICEM2013-96154
language
English
LU publication?
yes
id
3bab235b-fb8b-40dc-89e5-11c563bba80d (old id 4609287)
date added to LUP
2014-08-26 11:37:07
date last changed
2016-10-13 04:36:48
@misc{3bab235b-fb8b-40dc-89e5-11c563bba80d,
  abstract     = {The European Spallation Source (ESS) is the European common effort in designing and building a next generation large-scale user facility for studies of the structure and dynamics of materials. The proposed schematic layout of the ESS facility is based on a linear driver (linac) directing the proton beam (5 MW of 2.5 GeV) of 2.8 ms long pulses with a 20 Hz on a tungsten target where neutrons are produced via spallation reactions. Further the neutrons will be moderated to thermal and subthermal energies in a couple of moderators placed around the target. The moderators feed 22 beamlines guiding the neutrons to the scattering instruments, mainly for neutron scattering research, as has been previously mentioned. The objective of this work is to develop a waste management plan for ESS facility. In this respect two important aspects are analyzed. First the present status of the problem is outlined as follow. Estimate types and quantities of waste that the ESS project will generate at different stages: commission, operation, decommissioning were derived using: i) precise Monte Carlo calculations ii) scaling the activity from the operation experience of the existing spallation source installations for waste such it is difficult to predict level of activation or for components of the facility in stage of the pre-conceptual model. Associated waste treatment/conditioning options and final disposal route were further analyzed in order to define the waste type and packet descriptions in agreement with Swedish regulations and policy. It was found that the compilation of completely new waste type descriptions for qualification of the ESS waste for disposal will be necessary. Particular attention was devoted to "problematic waste" as Beryllium reflector, C-14 from graphite used as core zone of the beam-dump and collimators or waste arising from the purification systems of both Helium and water cooling circuits. Management of waste on ESS site: collection/segregation systems, characterization system, storage options, is also described. In the second step, the acquired information is used for planning and implementing actions involving all participants (ESS, treatment facility operator, disposal operator, regulatory body and other authorized authorities).},
  author       = {Ene, Daniela},
  isbn         = {978-0-7918-5601-7},
  language     = {eng},
  pages        = {001--029},
  publisher    = {ARRAY(0xad55108)},
  series       = {ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management, Vol 1: Low/intermediate-level Radioactive Waste Management; Spent Fuel, Fissile Material, Transuranic and High-level Radioactive Waste Management},
  title        = {Preliminary Waste Management Plan of European Spallation Source},
  url          = {http://dx.doi.org/10.1115/ICEM2013-96154},
  year         = {2013},
}