Speakers
Mr
A. CherifMr
S. Atieh
Description
The Cryogenic Distribution Line (QRL), running along the machine tunnel parallel to
the regular lattice of superconducting quadrupole and dipole magnets of LHC,
distributes the refrigeration fluids produced by the refrigerators over long
distances. With a total length of about 25.8 km, the QRL consists of a modular set-up
of pipe and Service Modules (SM), Vacuum Barriers (VB), Fixed Points (FP), steps and
elbows.
The TS department has been in charge of replacing the non-conform sliding tables
included in the QRL. For this repair work, based on technologically advanced methods,
TS/MME imposed strict quality assurance programme and follow-up for the mechanical
repair works, as well as for the metrological measurements carried out with an
innovative polyarticulated arm, a portable measuring device and leak testing by argon
