2. CRG-ME YETS 2017/2018 activities
S. Junker / J. Metselaar
TE-CRG-ME
09 October 2017

3. Major opverhaul of rotary machines
Content
Major opverhaul of rotary machines
Screw compressor
Oil pumps
Maintenance plan (PM)
SercAl mechanics and SercAl vacuum sections
Consolidations & WOs
LHC
LHC Detectors
Non LHC (Compass & HIE-Isolde)
CRG-ME OMP 09-Oct. 2017

4. Screw Compressor Four He Screw Compressor for major overhaul
DO-30998/TE/CRG for 3 Stal compressors
S75 compressors to be dismounted and remounted at QSC1H-A-CP3 & 4
S93 spare part compressor to be installed at QSCA-2-CP8
Aerzen VMY536-aH gré a gré with Aerzen Schweiz
To be back as spare compressor latest on the 02nd of March
Batch
Delivery by CERN of compressors at contractor’s premises
Ready at contractor’s premises for delivery to CERN
Total revision period at contractor’s premises [working days]
Type
Nb of comp.
Earliest date
Latest and mandatory date
No later than
S75 2
22-Dec 2017
05-Jan 2018
22-JAN-2018 10
S93 1
31-Jan 2018
26-Feb-2018 20
CRG-ME OMP 09-Oct. 2017

5. Oil Pumps Major Overhaul
Replacement of two Kral oil pumps by new ones with magnetic coupling
Replacement by spare pump (insert);
Inspection of replaced oil pumps to confirm our PM strategy;
Stal (LHC/ATLAS): yearly standard overhaul of (insert) oil pumps;
IMO (LHC): No oil pump for overhaul;
Mycom (LHCC) : No oil pump for overhaul;
Allweiler (ATLAS-SR): No oil pump for overhaul;
Note : OP has confirmed proto is OK and has requested to install a second oil pump with magnetic coupling -> Order send to Schubag AG
Desmi (LHC): 3 x oil pumps
-> Exchange of roller bearings + visual inspection
Position
Last 12 months
Yets 2017
QSCB-4-8P670
7658
56872
QSCB-6-7P670
6576
60734
Installation of variable frequency drivers (VFD) required
Position
Last 12 months
Yets 2017
QSCB-18-2P640
5587
57292
CRG-ME OMP 09-Oct. 2017

6. PM – Maintenance Plan (QSSM & QSSV)
Based on SercAl work package review request
QSSM
24 x Oil analysis (yearly basis)
Already launched
38 x Tooth coupling inspection with re-greasing (yearly basis)
QSSV
PM schedules to be reviewed
Filters replacement of the coalescer cartridges (32’000 h basis) is postponed to LS2
44 x Primary pumps : postponed to LS2
25 x Oil diffusion pumps inspection
22 x Oil diffusion pumps to be inspected.
All overhauls are postponed to LS2 where a resynchronization will be studied
8 x blowers inspection(regeneration of adsorbers)
-> Task list for Kaeser blower to be created
CRG-ME OMP 09-Oct. 2017

7. LHC WOs/Consolidations (1)
LHC-P18
QSCCB-18 - Cleaning of CP piping (between coalescer 1 and compressor suction)
LHC-P2
QSCA-2 - Piping consolidation to reduce vibration values. (List of consolidation points will be provided by OP)
QSCCA-2-CP2
Missing dampers to be installed
Active cleaning or oil change to be performed
LHC-4
QSCA-4-7CV567 - Consolidation of control valve
QSCA-4-J009 - Replacement of the coupling by a well-balanced one
QURA-4-T7 - Adaption flange to be installed (as done for QURA-6-T7)
QSCB-4 - 1HV569 to be taken out. (control valve down stream)
QSCB-4-8P670 - Installation proto type oil pump with magnetic coupling (see slide 5 - Oil pumps major overhauling)
QSCB-4-3LSH666 - Piping to be changed
CRG-ME OMP 09-Oct. 2017

8. LHC WOs/Consolidations (2)
QSCA-6-1P640 (Desmi) - Prototype oil pump to be installed)
QSRB-6-F530 - Prototype water filter to be installed
QSCB-6-7P670 - Installation proto type oil pump with magnetic coupling (see slide 5 - Oil pumps major overhauling)
QSRB-6-T8 - Repair of water circuit thread
LHC-8
QSCCB-8-1GT120 - Slide valve position transmitter to be replaced
QSCA-8-5P621 (IMO) - Installation of a prototype skid for IMO oil pump.
Tunnel
Compressed air isolation valve to be added
Compressed air leak
Helium leak (warm piping)
Helium leak (Flange) between PV931 and CV931
Pressure test S12 (TBC)
CRG-ME OMP 09-Oct. 2017

9. LHC Detector- WOs/Consolidations
Atlas
Installation of solenoid dewar platform
QSC1H-A-J006 - Support to proto type coupling installation
QSC2H-A-1CV Valve body to be replaced (bypass valve)
QSC2H-A-2P Installation of oil pump with magnetic coupling
Underground
2 x water tank heat exchanger to be replaced
Add of 3-way valves + redundant safety vales (SV3272, SV3279)
CMS
QSC1H-C - Realization of 3 purge lines
QSC1H-C-TT177 to be replaced in the GN2 regen mainstream
QSC1H-C-A173 - Replacement of adsorber insulation
CRG-ME OMP 09-Oct. 2017

10. Non LHC : WOs/Consolidations
HIE-Isolde (YETS : Jan – Feb 2018)
Repair of TL by Criotec
Installation and connection of CM4 (Mar 2018)
QSC1H-HIE-P600 - unlink oil pump from motor-compressors skid
QSC1H-198-P362 - System to allow maintenance (big oil diffusion pump)
QSK1H-199-P362 - Système pour maintenance P362
QSK1H-199-PT364 - Upgrader PT364 en deux jauges
QSC1H-198-NRV189 - Upgrade clapet (delta P trop grand)
QSC1H-198-PV100 - Moteur simple effet PV100
QSC1H-198-EH411 - Ajout FS or FT pour regénération charbon
QSC1H-198-FT530 – Install FT on outlet instead of inlet
HIE-Isolde (Pre-YETS : 4-11 December 2017)
Dewar test : QSK1H-199-LT730 to be enabled, calibration to be verified and issue with pressure oscillations
Faulty TTs in cryomodules
COMPASS (Pre-YETS : November 2017)
Dismounting of LH2 system and target
Re-installation of He distribution system including leak detection in CB
CRG-ME OMP 09-Oct. 2017

11. Many thanks for your attention