beam vacuum quality control outline vsc consolidation vsc support organization status cédric...

Beam Vacuum Quality Control

Outline

VSC consolidation

VSC support

Organization

Status

Cédric Garion on behalf of TE-VSC

Cédric Garion TE/VSC Beam Vacuum Quality Control 3rd LHC Splice Review, 12-14 Nov ‘12


VSC consolidation – Beam Vacuum (1)

1. Eliminate critical PIM Corrective action: ~14

Ball tests localization of buckled fingers and finger exchange

Endoscopic inspections Preventive consolidation (TETM, 17/01/2011)

Arc extremities : 18

Magnet exchanges: 18*4

Damage bellows: ~10

V1 V2 V1 V2 V1 V2 V1 V2 V1 V2 V1 V2 V1 V2 V1 V2QQBI.7R 1.0 1.0 0 0 1.0 1.0 0 0 1.0 1.0 0 0 1 1 0 0QBQI.8L 1.0 1.0 0 0 1.0 1.0 0 0 0 0 1.0 1.0 0 0 0 0

7-8 8-11-2 2-3 3-4 4-5 5-6 6-7

1. Ball test (TE/VSC & BE/BI)2. Interconnection opening (SIT)

3. Beam line cutting (SIT)4. Dummy PIM installation5. PIM reconditioning (VSC) // Lip measurements* (ICIT) // Endoscopy (ICIT) 6. PIM positioning, tack welding and PIM bellows protection (VSC)7. PIM welding (SIT)

8. Beam line leak test (VSC)9. Ball test (VSC)


Work is done in collaboration with the Special Intervention Team (SIT)

Simplified PIM consolidation sequence:


* Required for PIMs at magnet exchanges and for damaged bellows In case of buckled RF fingers, the same PIM body is re-installed at the same location (PIM WG, 2/12/08)


2. Protect against overpressure:

Install rupture disks and non-return valves

Install protective shells to limit the bellows deformations

3. Protect against electrical arcs and melted particle projection Install protective shells (PEI)



4. Protect against pressure wave, cold gas and debris propagation (no impact on SMACC): Reduce sector valve closure time

Install fast shutter valves close to the RF cavities


VSC Support – Beam Vacuum (1)

Check integrity of bellows: Beam screen, PIM and X line bellows Visual inspections of bellows after opening and before closure Installation of temporary protections in place throughout the period during

which the interconnections are open: rubber strip + stainless steel foil

Additional protections (1 protective half shell per line) will be installed during (at least) the cutting activities.


1. Interconnection opening (MSC): W bellows, thermal and radiative shields2. Rubber protections on V1, V2 and X bellows (MSC)3. M bellows shell dismounting (MSC)

4. Interconnection inspection and thermometers disassembly (IC QA)

5. Rubber protection removal and bellows inspection (ICIT)6. Rubber and stainless steel foil protection installation (ICIT)

7. Installation of additional dedicated protective half shell before the cutting train and removal after ~1 week (recycling) (ICIT)

8. Beam vacuum line leak tests (VSC)

9. Temporary protection removal and bellows inspection (ICIT)10. Installation of permanent protective half shells (ICIT)

11. Interconnection inspection and thermometers assembly (IC QA)

12. M bellows shell assembly (MSC)13. Interconnection closure (MSC)

VSC Support – Beam Vacuum (2)

Opening/closure and inspection/protection sequence:



VSC Support – Beam Vacuum (3)Inspection work flow:

The status of existing non-conformities is available (based on EDMS data)

Expected state

1st inspection: state conformed to expectations

Yes No

NC follow up (if exists):

to cut or not to cut?

Visual localisation of damage, if any, and protections

Other activities: splice, leak tests,ELQA,…

2nd inspection: state conformed to expectations

NC follow up: to cut or not to cut

Delete of damage localisation marks,

Installation of the protective half shells

NC opening

Yes No NC opening

NC closure

NC closure

VSC Organization

LHC cold beam vacuum

LBV: RF Ball tests, Rupture disks and non-

return valves,

EIV: PIM repair/consolidation Beam line inspection and

protection Protective half shells

Extra resources: 1 tech. student (traceability) 0.5 FSU (PIM) 6 staffs from polish

collaboration: cold beam line inspections and protections


Status

• Component procurement Protective half shells Received Temp. V bellows protection (& X) Received Spare PIMs Received Tools Received or ordered

• Documentation & workflow Existing NC on bellows OK Procedures EDMS 1244128: to be released WISH tool On-going ECR EDMS 1184071: to be released


Thanks for your attention!

beam vacuum quality control outline vsc consolidation vsc support organization status cédric...

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