Risk analysis update of the LHC cryogenic system following the 19th September 2008 incident

On 19th September 2008, during powering tests of the main dipole circuit of the Large Hadron Collider, an electrical fault occurred producing an electrical arc and resulting in mechanical and electrical damage, release of helium from the magnet cold mass to the insulation vacuum enclosure and conseq...

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Detalles Bibliográficos
Autores principales: Chorowski, M, Fydrych, J, Modlinski, Z, Polinski, J, Tavian, L, Wach, J
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1377044
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author Chorowski, M
Fydrych, J
Modlinski, Z
Polinski, J
Tavian, L
Wach, J
author_facet Chorowski, M
Fydrych, J
Modlinski, Z
Polinski, J
Tavian, L
Wach, J
author_sort Chorowski, M
collection CERN
description On 19th September 2008, during powering tests of the main dipole circuit of the Large Hadron Collider, an electrical fault occurred producing an electrical arc and resulting in mechanical and electrical damage, release of helium from the magnet cold mass to the insulation vacuum enclosure and consequently to the tunnel, via the spring-loaded relief discs on the vacuum enclosure. The pressurization of the vacuum space exceeded significantly the allowed design value. Mathematical modeling based on a thermodynamic approach has enabled the revision of the helium discharge system protecting the vacuum enclosure against the over-pressurization in case of a redefined maximum credible incident (MCI) occurrence.
id cern-1377044
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13770442019-09-30T06:29:59Zhttp://cds.cern.ch/record/1377044engChorowski, MFydrych, JModlinski, ZPolinski, JTavian, LWach, JRisk analysis update of the LHC cryogenic system following the 19th September 2008 incidentAccelerators and Storage RingsOn 19th September 2008, during powering tests of the main dipole circuit of the Large Hadron Collider, an electrical fault occurred producing an electrical arc and resulting in mechanical and electrical damage, release of helium from the magnet cold mass to the insulation vacuum enclosure and consequently to the tunnel, via the spring-loaded relief discs on the vacuum enclosure. The pressurization of the vacuum space exceeded significantly the allowed design value. Mathematical modeling based on a thermodynamic approach has enabled the revision of the helium discharge system protecting the vacuum enclosure against the over-pressurization in case of a redefined maximum credible incident (MCI) occurrence.CERN-ATS-2011-019oai:cds.cern.ch:13770442011-08-01
spellingShingle Accelerators and Storage Rings
Chorowski, M
Fydrych, J
Modlinski, Z
Polinski, J
Tavian, L
Wach, J
Risk analysis update of the LHC cryogenic system following the 19th September 2008 incident
title Risk analysis update of the LHC cryogenic system following the 19th September 2008 incident
title_full Risk analysis update of the LHC cryogenic system following the 19th September 2008 incident
title_fullStr Risk analysis update of the LHC cryogenic system following the 19th September 2008 incident
title_full_unstemmed Risk analysis update of the LHC cryogenic system following the 19th September 2008 incident
title_short Risk analysis update of the LHC cryogenic system following the 19th September 2008 incident
title_sort risk analysis update of the lhc cryogenic system following the 19th september 2008 incident
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1377044
work_keys_str_mv AT chorowskim riskanalysisupdateofthelhccryogenicsystemfollowingthe19thseptember2008incident
AT fydrychj riskanalysisupdateofthelhccryogenicsystemfollowingthe19thseptember2008incident
AT modlinskiz riskanalysisupdateofthelhccryogenicsystemfollowingthe19thseptember2008incident
AT polinskij riskanalysisupdateofthelhccryogenicsystemfollowingthe19thseptember2008incident
AT tavianl riskanalysisupdateofthelhccryogenicsystemfollowingthe19thseptember2008incident
AT wachj riskanalysisupdateofthelhccryogenicsystemfollowingthe19thseptember2008incident

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