On call around the clock
The project imposes stringent requirements. Every employee must receive special training to work underground and in radiation protection areas, and every cable fitter must be in possession of an electrical certification for the duration of the works. Arnold’s specialists are on standby 24 hours a day, seven days a week. In the event of a network fault, an express crew with two electricians will carry out repairs within six hours.
Arnold is also available to assist the research institute in case of malfunction. Beatriz Gutiérrez Hernández explains that "the work is extremely delicate and demanding" and involves access both to the particle accelerator and to the electrical distribution and transmission network at CERN. "If it isn’t executed properly, it could lead to defects in the equipment as well as major outages," says Gutiérrez.
The experts at Arnold are, however, doing their utmost to prevent that from happening. They are implementing a special fault localisation service and cable route search throughout CERN’s medium- and high-voltage network. After all, they know that even the tiniest slip-up during work on this extraordinary system could quickly involve astronomical sums of money. Nevertheless, Cédric Favrod says: "We’re very proud to be making our contribution to the smooth operation of a laboratory that is unparalleled anywhere in the world."