Maria presented lifting attachments available on the market including 50t capacity, proposing that 2 of these could be bolted by 6x - 8x M36 holes to each unit to be rotated. 

Discussion was about how to machine the M36 holes. Experience with thread machining with the robot goes only up to M16. In addition the proper thread finishing cannot be guaranteed, which means that in any case parts of the machining need to be realized manually.

During LS2 magnet drilling machine (taken from CMS) was used for realizing M16 holes into JFC2s. The same machine can probably be reused. However following datasheet (find attached) threads machining with that machine goes only up to M30. It was further discussed that the threads machining could be partly realized with the robot (e.g. core drill) and finishing could be done manually with the magnet drill. 

Timely planning (preliminary):
- It has been agreed that the 1st JFSU should be brought to b.191 in July 2026 before road works will start blocking the crossing in front of Meyrin Gate B. 
- The 2nd transport operation will be planned to happen in March 2027 and consists of 2 transfers back and forth between SX1 and b.191. 
- For machining of the 2nd JFSU 4 months of time will be considered, so 3rd transport operation will fall to end of July 2027. 
- 1st JFC3 would then be available for machining as from August 2027. (Considering the experience won during machining the JFSUs, an estimated machining time of 4 months seems to be appropriate.) 
- 4th transport operation and the exchange of JFC3s would fall to November 2027.
- 5th transport and end of the project would then be in March/April 2028. 

The following decisions had been taken: 

• Maria looks for similar lifting devices that require threads of max 30 mm that could be machined manually. 
• Oliver and Sergio contacts RP to check dose rates related to manual machining of threaded holes and get their advice on how this kind of work should be carried out. 
• Oliver prepares a preliminary planning with the main milestones of the project for communication (objective mid July)
• Thin rubber sheets will be put between shielding pieces and the floor for protection (less for dampening)