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Session 2 - Shutdown 2012

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Session 2 - Shutdown 2012. Consolidations of Cryogenic Systems Review of the consolidation works scheduled for the cryogenic installations during a long shutdown. Olivier Pirotte on behalf of TE/CRG. OUTLINE. Non conformities (ECRs) / Repairs - PowerPoint PPT Presentation
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Session 2 - Shutdown 2012Consolidations of Cryogenic Systems

Review of the consolidation works scheduled for the cryogenic installations during a long shutdown

Olivier Pirotte on behalf of TE/CRGOUTLINESession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Non conformities (ECRs) / RepairsDFBs safety valves : DFBA (S23/S78/S81), DFBM (Q6R2 & Q6L8)Air leak DFBAO & DFBMC abnormal thermal loadReplacement of flexible in DFBA (leak prevention)IT safety valve DN300 collector (safety)He level gauge on Standalone Magnets (see JPh Tocks talk)Leaks in Y-lines (see JPh Tocks talk)Instrumentation of the tunnel (Recommendation #12, TF Report)HRL sectorization (Recom. #13, TF Report)DFBA CLs : TT channels 1.9 kV consolidation(EDMS 919146)Quench lines

OUTLINESession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Consolidations & new proposalsDecoupling of adjacent cryogenic sectors(reminder of G. Ferlins presentation, Chamonix 2009)Access platforms to the QRL Service ModulesQRL service module compressed air distributionInsert of flowmeters on Beam Screen circuitsUpgrade of DFBX Current Leads controlAddition of a pressure measurement on header BATLAS consolidationsDFBAO: improvement of LHe level control (idem DFBAC)QURC P6 : change CV241 valves (idem P4, reduce downtime)

OUTLINESession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Mandatory maintenance activitiesMajor overhauling planning

Upgrade / new installationAdditional refrigerator at P4 (cavities)

HRL sectorizationSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Motorization of the HRL sector valvesCost : 100 kCHF Installation : 1w/sect. + cablingAllow safe interventions in the tunnel and improve cryogenic consignations AIM HOW

DFBA CLs : TT channels 1.9 kV consolidationSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Prevent destruction of TT on 13kA CLs (major downtime risk) Restore conformity with LHC specification (Tests @ 1.9 kV) Cancel 5 TeV limitation AIM Cost : material already supplied Duration : 2-3 w / DFBA (cards CRG, cables EN/EL, connectors MPE)Change :ConnectorsCablesDAQ Cards HOW

QUENCH LINES CONSOLIDATIONSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Restore the operation of quench lines (quench sector issue : He -> atm.) Avoid major downtime risk (use of He strategic storage) Avoid extra cost risk : ~700 kCHF / sector AIM

Point 5Figures : New integration solutions to be studied Issue : sections with vacuum insulated TL ? Cost estimate : ~500 kCHF Installation : 10 weeks / Point 2012->2013 ?: no consequence if E ~3.5/4 TeVHOW : Restore the functionality of QLs

Test of QLs at P5

Many conflicts with neighbouring equipements during shrinkage

Destruction of the insulation / Liquid air on cable traysOUTLINESession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Consolidations & new proposalsDecoupling of adjacent cryogenic sectors(reminder of G. Ferlins presentation, Chamonix 2009)Access platforms to the QRL Service ModulesQRL service module compressed air distributionInsert of flowmeters on Beam Screen circuitsUpgrade of DFBX Current Leads controlAddition of a pressure measurement on header BATLAS consolidationsDFBAO: improvement of LHe level control (idem DFBAC)QURC P6 : change CV241 valves (idem P4, reduce downtime)

Decoupling of adjacent sectorsSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Allow exchanging a magnet or a QRL SM in a sector while keeping the adjacent sector in nominal cryogenic operation Cost : 130 kCHF / sector (QUI) Installation : 4-6 w / sector AIM Add a submarine DN250 valve on header B HOW

QUI

Platforms for QRL Service ModuleSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Allow safe intervention on instrumentation of a QRL SM (arc, SAM, DFBs)Study with EN/MEF of a retractable platform to access a standard QRL Service Module in the arcs AIM HOW : Install access platforms

QRL Service Module Access Issue ArcSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG

Maintenance activities + interventions on cryogenic systems required access to instrumen-tationHow to get and work on the instrumentation of the SM ?Safety issue with maintenance personnel

QRL Service Module Access Issue - DFBsSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG How to get and work on the DFBs ?

Unsafe access conditions : risks of injuries and collateral damage to neighbouring equipements

Platforms for QRL Service ModuleSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Allow safe intervention on instrumentation of a QRL SM (arc, SAM, DFBs)Figures : 310 QRL Service Modules Standard config. : ~200 SM in the arcs Non standard config. : SAMs / DFBs (DFBX?) / RMs Cost estimate : 850 kCHF Installation : 4-6 weeks / sector Shift from 2012 to 2013 : no consequence AIM HOW : Install access platforms

Study of a retractable platform to access a standard QRL Service Module in the arcs

He guardQVPV, CV6 barAirQRL SM - Compressed air distributionSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Improve performance and life time of cryogenic control valves

Cost : 25 kCHF / sector (manpower) Installation : 2-3 w / sector (ideally after access platforms installation) AIM Split air distribution : add a 2 bar collector for CV in // of the 6 bar one HOW

2 barFT

Proposal following last operation issues:add flowmeters on BS circuitsAim : measurement of BS heat load (e-clouds, ?)How : add Coriolis FT to measure mass flow in BSProposal : 1 FT / 400 m (8/sector)Cost : 64 x (15 kCHF + 5kCHF for cabling) = 1.3 MCHFIssue : integration in the interconnectionsSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG CEHSupport posts & 60 A CLTTC'm2, T2m1, T1DQRL sideMagnet sideAperture 1Aperture 2IbIbBasic cooling scheme of beam screens : ~ 53mmt, TtTTDFBX: 600 A and 120 A CL control upgrade & control of heaters Session 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Improve performance and reduce risk of downtime due to the operation of DFBXs Cost : 130000 CHF / DFBX Installation : 3 w / DFBX AIM Replace 2008 consolidation by a more reactive and robust control strategy of 120A and 600A current leads (19 x flowmeters / DFBX) Consolidate temporary local control system of heaters on DFBXs installed in 2008 HOW

ATLAS consolidationsCryogenicskCHFCompressors 1450Cryocontrols 470Small spares 50He pumps 17511kL return line 80PCS pipe extension 707kL buffer 340He dryers 360Total ~ 3 MCHFSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG

Courtesy H. Ten KateOUTLINESession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Mandatory Maintenance activitiesMajor overhauling planning

Upgrade / new installationAdditional refrigerator at P4 (cavities)

Mandatory Maintenance activities Major overhauling planningSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG The full revision of the 74 compressors is the determining factor in the planning : up to 18 weeks for compressor station with 8 CPs (QSCA)

Cost : CP major overhauling : 5.2 MCHF Preventive maint. : 1.6 MCHFAll other preventive maintenance tasks can be carried out in the shadow of the revisions : up to 6 weeks / installation (C199 contract)

HL-LHC : new refrigerator at P4Session 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG

Decouple the operation of the cavities from the magnets (Sensitive control of the LP cavities performance)&Improve P4 cryogenic margins to equivalent level as P6 & P8

Cost : 300 kCHF Duration : 6 weeks AIM Profit of LSD to install pipework in the shaftIn summaryThe list of consolidations and maintenance activities scheduled for the next long SD has been presented. The total cost is about 12.15 MCHF.

The following consolidations should strongly be considered :

Consolidations involving safety issues for the personnel :HRL sectorization : 100 kCHF, 1 w / sectorAccess platforms to the QRL SMs : 850 kCHF, 6 w / sector

Consolidations needed for 14 TeV or to avoid major downtime risk :DFBA Current Leads TT channels 1.9 kV consolidation : 3 w / DFBAQuench lines : 500 kCHF, 10 w / sectorUpgrade of the DFBX CLs control : 1 MCHF, 3 w / DFBXMandatory maintenance activities (CP major revision) : 6.8 MCHF, 14 months (18 w / LHCA)Session 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG AcknowledgementsAll CRG colleagues (J. Casas, S. Claudet, G. Ferlin, A. Perin, G. Perini, L. Tavian, )

ATLAS team (H. Ten Kate)

Inputs from EN/MEF

Thanks for your attentionSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG ADDITIONAL SLIDESSession 2 - Shutdown 2012 - Consolidations of Cryogenic Systems - O. Pirotte on behalf of TE/CRG Non Conformities Remaining work from 2009Session 2 - Shutdown 2012 - Consolidations of Cryogeni

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