1. LS3 Study & Readiness Meetings
Motivations and need for this set of Meetings:
C&S Review asked us to start the definition of a “Draft0” for the LS3 Activity Plan at IR1 and IR5 (that will start with the machine equipment dismantling)
We have to present an adequate 1st version of this “Draft0” at the next C&SR (Nov 2019!)
 We need to circulate it in the Project and Departments by June 2019
Furthermore, some critical activities following the dismantling need management/contractual decisions that must be analyze and taken soon. They are:
the de-cabling (it will be a quite long activity, we have to study/decide the best approach for that)
cores openings for SLink and RF CC feeding (the CE contracts for that are not yet defined)
We will need to optimize the dismantling planning, studying the parallel and co- activities since this will impact on time duration and global resources (money and staff).
M. Modena, 2 November 2018, HL-LHC Integration Meeting

2. LS3 Study & Readiness Meetings
Expected targets and outcome from these Meetings:
Not expected to have many recurrent meetings for each WP (at least for now)
Meetings should not cover too much technical details but:
Collect and discuss the boundary conditions and input that will impact on dismantling (e.g. RP safety aspects, transports limitation and logistic aspects, parallelism, cohabitation and eventual synergies of activities, etc.)
Collect any info that will be necessary to start the work on the “Draft0” planning (i.e. the correct setting of activities and sub-activities: parallel and co-activities of different WPs or different teams inside a WP; etc.)
Check the readiness of:
dismantling procedures,
special tooling procurement (and staff resources availability for that task),
transport tooling procurement (and staff resources availability for that task),
note-down any eventual existing open issue that needs study and any other activity, study, actions to be launched and when( ACTIONS LIST)
Keep track of the planned/launched actions
M. Modena, 2 November 2018, HL-LHC Integration Meeting

3. LS3 Study & Readiness Meetings
Collimators in P1 and P5 that will be dismounted in beginning of LS3 #
Slot
Beam
Type
DCUM centre (m)
Distance from IP (m) IR
IP Side
MTF Link
Layout DB Link 1
TCTPV.4R1.B2 B2
TCTPV
Right
MTF
Layout DB 2
TCTPH.4R1.B2
TCTPH 3
TCL.4R1.B1 B1
TCL 4
TCL.5R1.B1 5
TCL.6R1.B1 6
TCL.6L5.B2
Left 7
TCL.5L5.B2 8
TCL.4L5.B2 9
TCTPH.4L5.B1 10
TCTPV.4L5.B1 11
TCTPV.4R5.B2 12
TCTPH.4R5.B2 13
TCL.4R5.B1 14
TCL.5R5.B1 15
TCL.6R5.B1 16
TCL.6L1.B2 17
TCL.5L1.B2 18
TCLVW.A5L1.B2
TCLVW 19
TCL.4L1.B2 20
TCTPH.4L1.B1 21
TCTPV.4L1.B1
M. Modena, 2 November 2018, HL-LHC Integration Meeting

4. For discussion
M. Modena, 2 November 2018, HL-LHC Integration Meeting

5. LS3 Study & Readiness Meetings
Some collected info from WP5:
Object
Location
Given by
Date
Description
WP5
Collimators
IP1-IP5
Inigo
02/07/2018
As of today there are 21 collimators in total, P1 Left has 6 collimators and all the others have 5 each.
The collimators are removed in two steps, the first is quick and it consists on the removal of the collimator itself; the second consists on the removal of the support. For the removal of the collimator, assuming that there is no object from BE-BI and nothing from the allignment, the first action is to de-consignate the collimator, then vacuum team opens the line, venting the sector, they remove the m-cat collar and they open the bellow. Then STI removes the plugs that hold the collimator and it is ready to be placed on the transport. The whole thing should take 1day per IP side (5 collimators), except for transport because only one can be taken out during each day. Considering the dismount of the supports, the first thing is to remove the water connections (there is one in and one out). It takes 1 hour per collimator. It is done by CV but mandated by STI. Then, the electric cables are removed from the distribution boxes to the collimator itself. It is about 5 meters of cables, times 6 cables per collimator. 1 hour per collimator should be enough. Then the support is unscrewed and taken out, which should take 1 hour. This means that the whole process takes 3 hours. There is no need for special transport of these equipments.
Everything that concerns the collimators must be taken out in a non-destructive way. They will most likely be reused.
So: about 1 week to empty one IP side. They can have up to 4 teams in parallel. Still the comment of Cristina about choice to leave the collimators there shielded for a while (point that Inigo don't like)
M. Modena, 2 November 2018, HL-LHC Integration Meeting

6. LS3 Study & Readiness Meetings
Some collected info from RP and Transport:
Object
Location
Given by
Date
Description RP
Collimators
IP1-IP5
26/01/2018
With respect to the collimators, it is not clear that they should be the first to come out because of the high levels of radiation. It is true that it is quite easy to remove them, but before taking that as a fact a study must be conducted. They can be shielded temporarily and be removed at a later stage. Follow-up: Inigo says they do not have the experience of using a shield (example, the one used in TOTEM P5). Also, wouldn't it cause disturbances on transport?
Cristina raised the topic of the storage of the collimators. With 5 collimators per point, there will be 20 collimators highly activated to store. This must be checked with Beniamino di Girolamo and the collimators group
Object
Location
Given by
Date
Description
WP17.7
Collimators
IP1-IP5
EN-HE
22/01/2018
there are 5 pal-fingers. Half a day to load each and half a day to transport it outside
All
IP5
In IP5 nothing can go up, it must always be transported to other points
IP1
In IP1 only objects with less than 20 tons and length inferior to 6 meters can be removed
IP4
In IP4 almost everything can come out that weighs less than 40tons except dipoles that need to go through UJ22 (P2)
IP6
In IP6 almost everything can come out that weighs less than 40tons except dipoles that need to go through UJ22 (P2)
Speed of transport convoys in the tunnel is 1 km/h
M. Modena, 2 November 2018, HL-LHC Integration Meeting

7. LS3 Study & Readiness Meetings
Some question to be answered: a
Is the global time for removal reasonable/correct? b
There is a preferred order? c
Will be removal done in parallel on several IP sides ? How many teams could be planned? (  RESOURCES) d
Critical transport aspects ? e
Procedures are all existing and OK? f
Any mock-up to be developed? g
Any other ? h i j k l m
M. Modena, 2 November 2018, HL-LHC Integration Meeting

8. LS3 Study & Readiness Meetings
M. Modena, 2 November 2018, HL-LHC Integration Meeting