Abstract
CERN operates and maintains the world largest cryogenic infrastructure ranging from ageing but well maintained installations feeding detectors, test facilities and general services, to the state-of-the-art cryogenic system serving the flagship LHC machine complex. A study was conducted and a methodology proposed to outsource to industry the operation and maintenance of the whole cryogenic infrastructure. The cryogenic installations coupled to non LHC-detectors, test facilities and general services infrastructure have been fully outsourced for operation and maintenance on the basis of performance obligations. The contractor is responsible for the operational performance of the installations based on a yearly operation schedule provided by CERN. The maintenance of the cryogenic system serving the LHC machine and its detectors has been outsourced on the basis of tasks oriented obligations, monitored by key performance indicators. CERN operation team, with the support of the contractor operation team, remains responsible for the operational strategy and performances. We report the analysis, strategy, definition of the requirements and technical specifications as well as the achieved technical and economic performances after one year of operation.
Highlights
CERN has been operating cryogenic installations for several decades adapting and improving since the operation, maintenance and performances [1, 2, and 3]
We have recently reviewed, streamlined and optimized the operation and maintenance activities to prepare for the forthcoming phases of the machines exploitation
The experience accumulated over the years has permitted to specify in detail the activities and implement standard industrial maintenance methodologies to reach corrective over preventive maintenance ratios and maintenance costs in line with industrial best practices [6]
Summary
- Upgrade of the cryogenic infrastructure of SM18, CERN main test facility for superconducting magnets and RF cavities A Perin, F Dhalla, P Gayet et al. - Overview of different control strategies for a typical cryogenic warm compressor station at CERN M Pezzetti, C V M Garcia, B Bradu et al. - Dynamic simulations of the cryogenic system of a tokamak R Cirillo, C Hoa, F Michel et al. View the article online for updates and enhancements
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