2. L. Tavian, TE/CRG, LSC 21.02.2014 Page 2 February 21 th, 2014 LS1 Committee (LSC) L. Tavian TE-CRG

3. L. Tavian, TE/CRG, LSC 21.02.2014 Page 3 Content Update on: QRL and DFBA progress Major overhauling and maintenance Highlight on other activities Re-commissioning status

4. L. Tavian, TE/CRG, LSC 21.02.2014 Page 4 Repair plan for QRL compensators Thanks to VSC friends for collaboration ! K. Brodzinski

5. L. Tavian, TE/CRG, LSC 21.02.2014 Page 5 QRL complementary information Tightness test: Sector 3-4: will be validated when all compensators in s3-4 replaced, Sector 8-1: following request from M. Pojer we will combine the QRL test with test of repaired arc NCs – planned next week. New spares: First 5 new spares for line C was received at CERN last Monday (modified design with 3 plies ventilated and one tight). The tightness testing by VSC is underway. Two of them will be installed on the QRL at 32L4 and 22R4 The end of mechanical work is foreseen to be completed by 7 March 2014. K. Brodzinski

6. L. Tavian, TE/CRG, LSC 21.02.2014 Page 6 Status of DFBA splices consolidation 109 / 135 splices consolidated (81%), work completed on 4 DFBAs. DFBAs re-closed, 2 DFBA (sect. 6-7) pressure & leak tested A. Perin Thanks to MSC !

7. L. Tavian, TE/CRG, LSC 21.02.2014 Page 7 DFBA 13 kA splices consolidation overview A. Perin Thanks to MME !

8. L. Tavian, TE/CRG, LSC 21.02.2014 Page 8 DFBA shuffling module repair A. Perin

9. L. Tavian, TE/CRG, LSC 21.02.2014 Page 9 LHC - Motor overhaul & Spare part M. Pezzetti

10. L. Tavian, TE/CRG, LSC 21.02.2014 Page 10 S. Junker / O. Pirotte

11. L. Tavian, TE/CRG, LSC 21.02.2014 Page 11 C199 dashboard Tendency Action plan: - focus on finishing P6-P8 a.s.a.p - terminate P18 end of Feb to allow LHe deliveries end of april - study what could be done for P4 !!! Under revision, trying to postpone non-LHC maintenance Situation of WO under analysis Recent effort & progress encouraging ! A. Perin / S. Claudet / L. Serio

12. L. Tavian, TE/CRG, LSC 21.02.2014 Page 12 Sector56 - first PLC project deployment !! First deployment of control CPC6 system PVSS Data Server CPC6 PVSS applications ARC56 and LSS56 have been imported Former panels have been backup and deleted New CPC6 panels have been downloaded PLCs Programs for ARC56 and LSS56 have been downloaded. Commissioning: Coherence test for I/O OK. Finishing checking panels DB Layout completely updated Starting with logic upgrades Beam Screen DFBX LHC Cryo tunnel Control M. Pezzetti

13. L. Tavian, TE/CRG, LSC 21.02.2014 Page 13 CRG-ME LS1 : DFBX consolidation Additional protection DFBX O. Pirotte / A. Perin

14. L. Tavian, TE/CRG, LSC 21.02.2014 Page 14 Storage buffer requalification: AET @ P6 Buffers to be tested : 3 x 250 m3 (Origin : Portugal) 10 x 80 m3 (Origin : Russia) Planning : 3 weeks as scheduled and expected (1+2) Haug compressor station : has fulfilled all the requirements Test procedure : validated Results : 4 x 80m3 classified in cat. 2/5. -> additional NDTs required Improvement : use of a trailer : flexibility & avoid shelter costs S. Junker / O. Pirotte

15. L. Tavian, TE/CRG, LSC 21.02.2014 Page 15 LHC detector LS1 progress No potential show stoppers identified U. Wagner

16. L. Tavian, TE/CRG, LSC 21.02.2014 Page 16 Cryogenic re-commissioning follow-up G. Ferlin Warm compressor stations Surface cold boxes Cavern cold boxes Interconnection boxes Sectors

17. L. Tavian, TE/CRG, LSC 21.02.2014 Page 17 Commissionning of QSCA-8 : issue with 4 motors Commissionning : high vibration level Before LS1 Major overhaul - Detailed vibration analysis  balancing issue with the motors - Overhaul company intervention at CERN on 19/02/2014 - 4 motors to be sent back to Marelli for balancing improvement of the motor - To be carefully followed… S. Junker / O. Pirotte

18. L. Tavian, TE/CRG, LSC 21.02.2014 Page 18 Flushing of Sector 67 (Feb 2014) Flushing of cold masses No solid pollution detected G. Ferlin

19. L. Tavian, TE/CRG, LSC 21.02.2014 Page 19 Flushing of Sector 56 (2007) 1st Flushing of cold masses Solid pollution Felt on filter Kapton Metallic material It has been decided to flush again cold mass G. Ferlin

20. L. Tavian, TE/CRG, LSC 21.02.2014 Page 20 Flushing of Sector 56 (2007) 2 nd Flushing of cold masses Solid pollution: mainly Kapton Felt on filter No more metallic pollution. Cold mass flushing OK G. Ferlin

21. L. Tavian, TE/CRG, LSC 21.02.2014 Page 21 Conclusion QRL and DFBA activities: good progress Major overhauling of compressors and motors on schedule but new issue with bad motor balancing to be carefully followed. Site maintenance activity: critical activity and action plan under study Other activities are progressing well Re-commissioning of cryogenic plants has started: New issue with motor vibration to be carefully followed. Flushing of sector S67 very encouraging  Quality of SMACC work.