Cabling activities in the LHC-injectors during LS1
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Transcript of Cabling activities in the LHC-injectors during LS1
Cabling activities in the LHC-injectors during LS1
Daniel RICCI, on behalf of EN-EL-CF
LS1 : Cabling activities
The consolidation and maintenance of the accelerator infrastructure (cabling and fibres)
A large amount of requests from equipment groups
D. Ricci – Cabling activities during LS1 – IEFC workshop2
Priority 2
Priority 1 & Priority 2but also Priority 3 & 4
Reliable Operation of LHC
Operation of LHC @ 7 TeV
9 March 2012
The goal of LS1 is to implement everything needed for a safe and a reliable operation of LHC @ 7
TeV/beam
Priority
Definition
0 safety1 Beam to 6.5 - 7 TeV2 Reliable operation3 CERN approved
projects4 Not approved
projects
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Outline Part1: status of the accelerator infrastructure
(why we need to consolidate) Overloaded cabling areas Irradiated cabling areas
Part 2: activities foreseen for LS1 Consolidation projects Requests from equipment groups
Part 3: resources and priorities Summary and conclusions
Cabling activities:- Installation of copper cables- Installation of optical fibres- procurement of cables/connectors
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4 D. Ricci – Cabling activities during LS1 – IEFC workshop
LS1 : Cabling activities
Part1: status of the accelerator infrastructure (why we need to consolidate) Overloaded cabling areas Irradiated cabling areas
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Status of the accelerator infrastructure
SPS was put in service in 1976 (36 years old) So far, cables for new systems were just “added” Irradiated cable replacement campaigns carried on
regularly since 20 years PS was put in service in 1959 (53 years old)
Only one cleaning campaign carried on in 1995-2000 600 km of cables removed in PS and PSB No irradiated cable replacement
Rest of PS-complex and Meyrin technical galleries Till now, cables were just “added” for new machine
systems and general CERN infrastructure All cables installed before ’80s are with halogens (risk
in case of fire accidents)
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Overloaded areas: SPS
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BA3 false floor
TS5 et ECX5
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Overloaded areas: SPS
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Galleries
Shafts
Overloaded cable trays do not allow pulling cables in the proper technical way
This situation is general for SPS
In some cases, cables cannot be installed anymore
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Overloaded areas: PS-complex and Meyrin site
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PS ring centre
Gallery TP9Intersection Linac2-
Linac4-PSB
Tunnel TT2
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Overloaded areas: PS-complex and Meyrin site
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Bld.361 (under the Booster), room BCER
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Overloaded cable areas (ordered by critical state)SPS machine
Critical state 1: Point 5 surface, shafts and
underground Point 4 surface, shafts and
underground Point 3 surface, shafts and
underground
Critical state 3: Point 6 surface, shafts and
underground Point 1 surface, shafts and
underground Point 2 surface, shafts and
underground Point 7 surface, shafts and
underground
Critical state 5: TT60, TT70
Shafts are the most critical areas for all points.
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PS-Complex and Meyrin site Critical state 2: Bld.360-361 (under the Booster),
rooms BCER, BOR, BAT Bld.354, room CCR et MNR, gallery
815 Gallery TP9 between Bld.354 and
Bld.361 Bld.353 (ring centre) and tunnel of PS
Bld.350 accelerator TT2 entire tunnel (from Build. 269 to
TT2A towards nTOF)
Critical state 4: Bld.2001 (upstairs), cable
connections from Build.2008
Critical state: severity of overload (1=highest)
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9 March 2012
Overloaded areas: PS-complex and Meyrin site
Gallery TP9
Tunnel TT2
Bld. 2001
B354
B361
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Maintenance of the accelerator infrastructure
Consolidation (clean-up) activities: With the help of users’ groups:List of unused cables Identify unused cables on site Disconnect unused cables from their equipment
Remove unused cables
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BA1: TS1
BA2: TS2
BA6: TS6, TCC6, TT60, TT61, TNC
BA4: TS4
North Area: TCC2, TDC2
Maintenance of the accelerator infrastructure: replacement of
SPS irradiated cables
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Total cables concerned: 6300Total length: 630 km (~12% of the total)
TS2: 1400TS1: 1200BA6: 2100TDC2-TCC2: 800TS4: 800
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Maintenance of the accelerator infrastructure: replacement of
irradiated cables SPS: regular replacement carried on until 2009
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Areas 1990 91 92 93 94 95 96 97 98 99 2000 01 02 03 04 05 06 07 08 09
TS1 All
TS2 ZS/MST/MSE All ZS/MST/V
acExc TCT Exc TCT
TCC2 All AA R
TDC2 All All
TS4 Part
TS6 ZS/MST/MSE
Exc TCT TCT Exc TCTVac exc
TCT TCT
TT60 All
TCC6 All
TNC All
TCT
Rem. ZS, Inst MKE
All
Cable volume
0
500
1000
1500
2000
2500
1992 93 94 95 96 97 98 99
2000 01 02 03 04 05 06 07 08
2009
Years
Cabl
e qu
antit
ies
0
50
100
150
200
Cable quantitiesTot length (km)
1 complete SPS point every shutdownReplacement foreseen every 5/6 years is today every ~10 years
TCT: Top cable tray, AA: Almost All, R: Rest, Part: Partial.
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Maintenance of the accelerator infrastructure: replacement of
SPS irradiated cables
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SPS TS1, TS6
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Maintenance of the accelerator infrastructure: replacement of
SPS irradiated cables
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Cable ageing + radiation can cause failure of SPS equipment and could stop the machine
Replacement is organized by campaigns. Not possible selective replacement of one/few cables: Cables entangled Risk of damaging the other cables High dose level taken by workers
Irradiated cable areas are also overloaded the consolidation (clean-up) benefits also the irradiated areas and viceversa
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Affected area: ~200 m
Maintenance of the accelerator infrastructure: replacement of
radiation-sensitive fibres
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July 2011 @ LHC-P7 found rad-sensitive optical cable contingent problem solved (new cable installation) started measurement campaign in all LHC & SPS radiation areas
Measurement and replacement campaigns Rad-sensitive fibres found so far in P1, P5, P7 Strategy:
install new spare cables (in Xmas break + LS1) replace rad-sensitive cables (LSI) continue monitoring + fiber database (2012 + LS1)
New procedure = Quality Control
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LS1 : Cabling activities
Part 2: activities foreseen for LS1 Consolidation projects Requests from equipment groups
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Consolidation: replacement of irradiated cables: TS1+, TCC2-
TDC2, RAL
2000 cables concerned incl. replacement of kickers cables in TS1+ (requested by TE-ABT)
2.8 MCHF 6 FTE 2013-2014
9 March 2012D. Ricci – Cabling activities during LS1 – IEFC workshop
SPS racks RAL
No. Zones Descr. Areas Duration* Remarks
1 SPS-P1 Repl. Irradiated cables TS1+ 14W 2 shifts, not // to (2), mid LS1
2 SPS-North Area
Repl. Irradiated cables TCC2, TDC2 14W 2 shifts, not // to (1), end LS1
3 SPS P1,P2,P4,P6,NA
Cons. Irradiated and aged rack RAL
P1, P2 8+12 W P1 // to (1), P2 after (2), mid-LS1
* Not including zone preparation (only cabling)
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Consolidation: replacement of irradiated cables: Radio
Protection
9 March 2012D. Ricci – Cabling activities during LS1 – IEFC workshop
Very high dose levels foreseen for EL activities during LS1 Increasing efforts in preparatory activities (dose estimation,
ALARA, etc.) and in contract management (training, rotation of personnel, etc.)
We will need help from our RP colleagues: Estimated doses available well before the end of 2012 “Hot” equipment shall be removed in the areas of
intervention Place the shielding in a way to not obstruct the access to the
cable trays Identify clearly for which areas the waste shall be treated as
radioactive RP operator field support during contractor working hours
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Consolidation: clean-up unused cables in SPS-P5
Concerned areas: BA5, BB5, TS5, ECA5,…
Number of cables currently installed: ~6000
Total estimated cable length: 600 km 3.2 MCHF (to be confirmed) 2 FTE 2013
With the help of users’ groups: Started to establish cleaning list of
unused cables Identify and disconnect (all) unused
cables on-site during 2012
9 March 2012D. Ricci – Cabling activities during LS1 – IEFC workshop
https://edms.cern.ch/document/1149428/3
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Clean-up unused cables in SPS-P5: status of feedback
from users (05/3/12)
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Systems (group) Feedback status Missing actions EN-CV List in progress On-site researchEN-STI Replied on xls list + on-site research NoneEN-EL Work in progressTE-ABT Replied on xls list + on-site research NoneTE-MPE Replied on xls list On-site researchTE-VSC Replied on xls list End of on-site researchTE-EPC Replied on xls list On-site researchTE-MSC No reply ReplyTE-CRG No cables BE-CO Replied on xls list + on-site research NoneBE-RF Replied on xls list + on-site research None
BE-BIReplied on xls list + on-site research (in progress) End of on-site research
BE-ABP Replied on xls list + on-site research NoneGS-ASE Replied on xls list End of on-site researchPH-ADO Replied + on-site research NoneIT-CS Replied for the intercom syst. Reply for the other systemsDGS-RP Replied on xls list On site research
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Clean-up unused cables in SPS-P5: summary
Results of activities during the last Xbreak (feedback from users + EN-EL inspection):
Found 1515 cables registered in the cable DB; total length 220 km This includes:
Abandoned cables (oxidated connectors, old patches, etc…): identified by EN-EL Unused cables: identified by the users Unused cables in the racks: identified by the users in collaboration with EN-EL
Found 1400 cables not registered in the cable DB; total length 50 km This are abandoned (cut, etc.) cables to be removed by default (in agreement
with technical coordination)
Total amount of cables to remove: ~2900; total length ~270 km~40% of total installed cables enough to organize a cleaning
campaign!…however we still need the users to complete their actions
(thanks!)9 March 2012
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Clean-up unused cables in SPS-P5: follow-up
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Schedule proposal
Price estimation
Ressources definition
Identification of thestarting points
Identification of the cable ladders or passages concerned
Accessibilities to the cable ladders - schaffoldings, lifting equipment, etc…
Estimation of the waste of irradiated cables.
Estimation of the total length
Volume estimationof the unused cables
Storage of the irradiated cable waste: containers and storage area.
Work Supervisor, transport, RP, safety process, etc…
t
0
Dose level estimation:ALARA comitee
Process definition to reduce the dose level taken by the workers.
Technical and adm.preparation
6-9
mon
ths
Upon the receipt of the list of the unused cables established by the users. (See EDMS 1149428)
See IEFC presentation of 21/10/11 for more details on the challenges related to organize cabling campaigns
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Volume estimatio
n
Preparation
of the campaign
Study of technical constrains
Study of access conditions
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Consolidation: replacement of radiation-sensitive fibres
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Monitoring activities to be continued in 2012
New contract for rad-resistant fibres 1.2 MCHF (to be confirmed) 5.5 FTE 2013-2014
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Consolidation: replacement of WCC hoses in 3 LHC sectors
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Risk of “leakage” due to hoses not conforming to the technical specifications (presence of chlorine and cracks)
Hose of WCC to be replaced in 3 LHC points (4 right, 6 and 8)
Length: 3120 m Commissioning and tests 2 MCHF 5 FTE 2013-2014
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Requests from equipment groups
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A large amount of user requests have already been made filling much more than 100% of our capacity during LS1. Moreover based on the last shutdown, we estimate that only 50% of the requests for LS1 are currently known.Some examples: R2E; relocation of EL equipment and re-cabling in 4 LHC
points PS Access system (PSS) Linac4 and Transfer line to Linac2 RF upgrade project in SPS BA3 the BE/BI upgrade projects, IT upgrade projects, HIE
Isolde, Elena, Video SPS, RF fire brigade, GSM-BTS, DAQ system for CMS and LHCb, etc.
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Requests from equipment groups: relocation of EL equipment and
re-cabling in 4 LHC points.
R2E Huge amount of cabling
relocation activities Work in 2 shifts New WCC for P5 and P1 5 MCHF 10 FTE 2013-2014
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Requests from equipment groups: PS-PSS (Personnel
Safety System)
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Sas Material
NTOFAD
PSBPS
CTF
HALL EST
TT2
ISOLDE
LINAC’s
Sas Personnel
28 new access points to integrate and equip
GS/ASE project (P. Ninin)
3,2 MCHF Cables & Fibres 3.5 FTE 2012-2013 Includes a portion of
consolidation in Meyrin
CABLE DISTRIBUTION ON SITE
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The day-to-day business
Roughly 2200 cables/year are installed on the three main sites: LHC, SPS, PS (~80 cabling requests per site)
This includes: Treatment of DIC and DIF (Demandes Installation Cables et Fibres) Technical study (cable trays, routing, termination, planning, cost,
etc.) Material procurement (price enquiries, invitation to tenders, etc.) Installation works (managing contractors, etc.) Work surveillance Acceptance and quantity check
Day-to-day business includes also: Section and coordination Contract management People training Etc.
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LS1 : Cabling activities
Part 3: resources and priorities
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Strategy & workload In order to cope with the huge program of work
during LS1, all CF projects have been organised so that they could start during the technical stops in 2011/2012
and ideally, only those activities which must take place during
a full shutdown are carried out during LS1. Therefore the CF program for the shutdown has
already commenced (2011) EL-CF had already doubled its staff in the last 3
years. This substantial increase of has now reached the limit of the training and supervision capacity of the CF core staff Projects have to be prioritized
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Projects & Priorities
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Summary & conclusions Huge amount of work for CF before and during LS1 Project preparation started already (works are anticipated during TSs) Cabling and fibre activities are strongly dependent from other groups We need your help to cope with everything:
Users: continue helping with the identification of unused cables present your cabling/fibres requests now (for organizing the activity: resources,
plannning, purchase of material) Planning coordination:
SPS, PS: anticipate as much as possible the communication of the access constraints, drive and organize activities with other services/groups
Machine coordination: what do we do with old systems (e.g. Intercom Public Access in SPS)?
RP: estimate doses, remove “hot” equipment, etc. (see slide 21)
Management: help us to set priorities (now…)
Project leaders: start to take into account the cable removal in the new projects in order to avoid
these situation to repeat in the future9 March 2012
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Thank you for your attention
…and have a nice weekend!
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LS1 Cabling activities
9 March 2012D. Ricci – Cabling activities during LS1 – IEFC workshop
Extra slides
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Requests received for LS1(Nov. 2011)SPS machine
Critical state 1: Point 5 : clean-up campaign (EN-EL) Point 4 : - Point 3 : BE-RF cavities/new bld.
Critical state 3: Point 6 : - Point 1 : repl. irr. cables + cons. RAL
(EN-EL) Point 2 : cons. RAL (EN-EL) Point 7 : -
Critical state 5: TT60, TT70 : -
All SPS: BE-BI instr. (BCT, BTV, BPM, BLM, etc.)
+ other cabling requests of various types9 March 2012
PS-Complex and Meyrin site Critical state 2: Bld.361 (Booster) : BE-BI instr. (BCT, BPM,
BLM, etc.) + PSS (GS-ASE) + cons. Multipole (TE-EPC) + Interlock (TE-MPE) + L4-PSB connection
Bld.354 : - Gallery TP9 : - Bld.353, PS tunnel Bld.350 : BE-BI instr. (BCT,
BWS, BBQ, BLM, etc.) + PSS (GS-ASE) TT2 tunnel : BE-BI instr. (SEM) + PSS (GS-ASE)
Critical state 4: Bld.2001-2008 : -+ other cabling requests of various types
From IEFC meeting 27th Jan 2012
38 9 March 2012
How is it possible to arrive to this situation in pt5?
3: The duration of the Shutdownsdoesn’t preview the huge removal of the old system.
Now is not possible to pull (install) new cables in the
tunnel of Point 5.Now is the time to foreseen a cleaning cable
campaign !
1: No huge campaign for removal of old cables since the SPS’ installation in the BA5 and in the tunnel.
2: The installation of a new system doesn’t includes the removing of the previous one.
D. Ricci – Cabling activities during LS1 – IEFC workshop
Cleaning up SPS-P5
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Cleaning up SPS-P5
9 March 2012D. Ricci – Cabling activities during LS1 – IEFC workshop
Summary: For some users we are still missing a reply For other important users we strongly recommend a research in the
field It seems many cables are very old and not known by the users.
However, it is clear to which system they belongs requires system owners to understand “what it is”
In the great majority of cases the users think “What are the cables which I do not need anymore in the existing system?”, they should instead think “I have a system with a lot of cables. How could I improve my system in order to reduce the number of cables? Which cables can I remove then considering these improvements?”
Example: a lot of cables affected to “Intercom Public Address” (Intercom station only). Do we need to keep it in use like it is? Can it be replaced by portable telephones like in LHC?
From IEFC meeting 27th Jan 2012
Cas pratique : Plan de travail
• Fournir les listes de câblages aux utilisateurs :
• Réponse des utilisateurs :
• Relevé des câbles abandonnés:
• Evaluation du volume et de la stratégie (manpower + coûts) :
• Mise en œuvre (préparation) :
• TRAVAUX (durée de 6-9mois) :
Octobre 2011
Janvier 2012
Janvier 2012
Juin 2012
Octobre 2012
Janvier 2013 (LS1)
Action EN/EL
Action utilisateurs
Action coordination
Action EN/EL Action utilisateurs+
Action EN/EL
Action EN/EL +
Action coordinationAction EN/EL +
EDMS n°1154423