Sbastien MICHAL March 2009 EES 1 GROOVE EES

Sébastien MICHAL March 2009

EES 1 GROOVE • EES 1 laid on table to be milled – Move horizontally EES frame crossing bar Sébastien MICHAL March 2009

EES ASSEMBLY • EES 1 and EES 2 fixed on assembly table and lifted • EES chamber struts and temporary pin inserted Sébastien MICHAL March 2009

EES ASSEMBLY • EES frame mounted, alignment bar in REST position • EES assembly fixed to the table, lifting beam connected to the assembly Adjustable supports EES frame REST position Sébastien MICHAL March 2009

EES ASSEMBLY • Crane fixed to the assembly table. • EES assembly (chambers, alignment bar, frame, lifting • • • beam) are rotated until the vertical position. Assembly table rocking fixation connected to the floor. Crane connected to the lifting beam. Fixation btw assembly table and EES assembly disconnected. EES assembly lifted and fixed to the EO rack with two EES assemblies transported to point 1 and lowered into the pit. Sébastien MICHAL March 2009

EES SUPPORTING STRUCTURE • Fixed to barrel struts and voussoirs • Surveyed • Removable in sector 5 Curved aluminum pipes (rails) Supports Sébastien MICHAL March 2009

RAIL SUPPORT • Adjustable connecting pin Sébastien MICHAL March 2009

EES INSTALLATION TOOLING • Fixed to sector 5 strut • Removed for the sliding of chambers and walkways • Before EES installation, installation of walkways and gangways Sébastien MICHAL March 2009

WALKWAYS AND GANGWAYS • Modular and divided in two portions. • They surround the EES assembly. • Installation step: – – – First portion introduced EES assembly introduced and positioned Second portion introduced • They will be inserted using EES rails Sébastien MICHAL March 2009

EES ASSEMBLY LOWERING • EES assembly lowered with lifting beam • Installation of the hanging fixations, lifted to sector 5 Hanging fixations Sébastien MICHAL March 2009

EES INSTALLATION TOOLING • Trolleys positioned on the rails 4 trolleys Sébastien MICHAL March 2009

EES ASSEMBLY INSERTION • Pass trough struts and voussoirs • Ladder placed in sector 5 must be removed Sébastien MICHAL March 2009

EES ASSEMBLY INSERTION • EES assembly fixed to the strut, IPN profiles partially removed, installation of missing rails Sébastien MICHAL March 2009

EES ASSEMBLY INSERTION • Tireforts and rail hoist slightly tensioned, strut fixation and trolleys detached, hanging fixation removed. • EES assembly pulled with rail hoist and safely guided by tireforts Sébastien MICHAL March 2009

ALIGNMENT BAR POSITIONING • Before arriving at correct location, alignment bar move up by 40 mm WORK position Camera mount Safety strip REST position • Metallic safety strip and rest support removed Sébastien MICHAL March 2009

EES ASSEMBLY INSERTION • Survey clamp (two pieces): correct azimuthal location • EES assembly locked up in position with the second clamp • Tireforts detached • Gangways installed • Chamber aligned using adjustable support and struts Sébastien MICHAL March 2009