Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applications
At the European Laboratory for Particle Physics (CERN), commercial greases and oils are extensively used to lubricate moving devices operating in high-radiation areas, absorbing doses up to the MGy range. Due to their sensitivity to radiation, lubricants can become fluid or solid in operation, poten...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S235217912100154X |
| _version_ | 1819102042371653632 |
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| author | Matteo Ferrari Dominika Senajova Keith Kershaw Antonio Perillo Marcone Marco Calviani |
| author_facet | Matteo Ferrari Dominika Senajova Keith Kershaw Antonio Perillo Marcone Marco Calviani |
| author_sort | Matteo Ferrari |
| collection | DOAJ |
| description | At the European Laboratory for Particle Physics (CERN), commercial greases and oils are extensively used to lubricate moving devices operating in high-radiation areas, absorbing doses up to the MGy range. Due to their sensitivity to radiation, lubricants can become fluid or solid in operation, potentially causing component failures and compromising the operation of the accelerator complex. CERN is therefore developing methodologies to select radiation tolerant commercial lubricants for critical Beam Intercepting Devices (BIDs) such as high-power targets, dumps and collimators. A careful selection of greases is fundamental to reduce the risk of failure, to optimize equipment lifetime and to minimize maintenance and unwanted radiation exposure of personnel in high radiation areas.Three different parameters are considered to select commercial lubricants: the expected total dose absorbed in operation, the maintenance feasibility and the failure impact in terms of accelerator downtime and of personnel involvement in replacement procedures. Based on these criteria, an example of relevant application is presented: the lubrication of the new internal beam dump of the Super Proton Synchrotron (SPS). Experimental radiation damage data allowed the identification of two radiation tolerant commercial greases to lubricate the dump support jack assembly. |
| first_indexed | 2024-12-22T01:28:16Z |
| format | Article |
| id | doaj.art-aa346244ed4a4151bbcb53dd9dc0043c |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-22T01:28:16Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-aa346244ed4a4151bbcb53dd9dc0043c2022-12-21T18:43:34ZengElsevierNuclear Materials and Energy2352-17912021-12-0129101088Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applicationsMatteo Ferrari0Dominika Senajova1Keith Kershaw2Antonio Perillo Marcone3Marco Calviani4CERN, CH-1211, Geneva 23, Switzerland; Corresponding author.CERN, CH-1211, Geneva 23, Switzerland; Imperial College London, SW7 2AZ, London, United KingdomCERN, CH-1211, Geneva 23, SwitzerlandCERN, CH-1211, Geneva 23, SwitzerlandCERN, CH-1211, Geneva 23, SwitzerlandAt the European Laboratory for Particle Physics (CERN), commercial greases and oils are extensively used to lubricate moving devices operating in high-radiation areas, absorbing doses up to the MGy range. Due to their sensitivity to radiation, lubricants can become fluid or solid in operation, potentially causing component failures and compromising the operation of the accelerator complex. CERN is therefore developing methodologies to select radiation tolerant commercial lubricants for critical Beam Intercepting Devices (BIDs) such as high-power targets, dumps and collimators. A careful selection of greases is fundamental to reduce the risk of failure, to optimize equipment lifetime and to minimize maintenance and unwanted radiation exposure of personnel in high radiation areas.Three different parameters are considered to select commercial lubricants: the expected total dose absorbed in operation, the maintenance feasibility and the failure impact in terms of accelerator downtime and of personnel involvement in replacement procedures. Based on these criteria, an example of relevant application is presented: the lubrication of the new internal beam dump of the Super Proton Synchrotron (SPS). Experimental radiation damage data allowed the identification of two radiation tolerant commercial greases to lubricate the dump support jack assembly.http://www.sciencedirect.com/science/article/pii/S235217912100154XRadiation effectsRadiation to materialsLubricantsOilGreaseRadiation tolerance |
| spellingShingle | Matteo Ferrari Dominika Senajova Keith Kershaw Antonio Perillo Marcone Marco Calviani Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applications Nuclear Materials and Energy Radiation effects Radiation to materials Lubricants Oil Grease Radiation tolerance |
| title | Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applications |
| title_full | Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applications |
| title_fullStr | Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applications |
| title_full_unstemmed | Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applications |
| title_short | Selection of radiation tolerant commercial greases for high-radiation areas at CERN: Methodology and applications |
| title_sort | selection of radiation tolerant commercial greases for high radiation areas at cern methodology and applications |
| topic | Radiation effects Radiation to materials Lubricants Oil Grease Radiation tolerance |
| url | http://www.sciencedirect.com/science/article/pii/S235217912100154X |
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