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Schedule: Still on time ?. Content: Part I: status of installation and present delay What was planned a year ago Status of the QRL, magnet transport and interconnect Part II: can we limit the increase of the delay? The “hard limits”

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Schedule: Still on time ?

  • Content:

  • Part I: status of installation and present delay

    • What was planned a year ago

    • Status of the QRL, magnet transport and interconnect

  • Part II: can we limit the increase of the delay?

    • The “hard limits”

    • Dates for hand over to the Hardware Commissioning

  • Conclusions

S.Weisz


Situation a year ago
Situation a year ago:

  • Civil Engineering:

    • Last underground area at Point 5 (RB/UJ56) delivered mid-November 04

  • General services:

    • Close to completion in most sectors

    • Collimation region at Point 7 just being re-designed

  • QRL:

    • Sector 7-8: all elements to be repaired and re-installed

    • Sector 8-1: 2 validation cells installed

  • Cryo-dipoles:

    • 480 magnets to store at the surface

    • Struggling to find storage space

  • New installation strategy:

    • Compressed schedule – beams in summer 2007

    • Skip QRL cold tests (except 7-8 & 8-1)

    • Install cryo-magnets (transport & interconnect) in parallel with QRL installation and leak tests

S.Weisz


QRL (re-)Installation & Cold tests

Sectors 7-8 & 8-1: installation validation

S.Weisz


Status of qrl installation
Status of QRL installation:

  • QRL in sector 7-8:

    • Sub-sector A & B expected ready in July, cold tests started mid-September

    • Completion of the full sector expected for September, done in December

  • QRL in sector 8-1:

    • Cold tests expected in September, done in December

  • On-going installation:

    • Sector 4-5: installed and pressure tested (except JR)

    • Sector 3-4: about to finish, pressure test scheduled for February 18-19

    • Sectors 5-6 & 6-7: in progress

  • 3 months delay with respect to last year estimate

S.Weisz


  • LSS8L power tests:

  • Postponed, DFBM were not available …

  • Impact on HW commissioning

    (short circuit tests in July - on time)

S.Weisz


Short term schedule for dfbs of sector 7 8 and 8 1

DFBM for LSS8L

5 months delay

DFB Project

Short term: schedule for DFBs of sector 7-8 and 8-1

A. Perin – MARIC, December 21st, 2005

S.Weisz



Status of cryo magnet transport

*20 transports/week achieved during wk 2 & wk 3, 2006

Status of cryo-magnet transport:

  • Sector 7-8:

    • LSS8L: expected magnet transport in October,

      Low-/DFBX/D1/D2/Q4 installed in December, Q5 not ready

    • Arc: all magnet in place expected for September, 40 dipoles and 17 SSS transported by December 22th, 2006

  • Sector 8-1:

    • Arc: all magnet in place expected for September, 111 dipoles and 18 SSS transported by December 22th, 2005

    • No installation during 6 weeks of QRL cold tests

  • Sector 4-5:

    • Arc: all magnet in place expected for December, 48 dipoles and 9 SSS transported by December 22th, 2005

      Expected to transport ~600 cryo-magnets in 2005, 249 done

S.Weisz


Problems with cryo magnet transport
Problems with cryo-magnet transport:

  • Slot availability:

    • QRL sub-sectors not ready, leak tests much longer than anticipated in sector 7-8

    • Slots for SSS with jumper not available: cold tests and repair of SM modules in sector 8-1, new leaks in sector 4-5

  • Magnet availability:

    • Dipoles non-conformity problem now solved

    • SSS with plugs are late (required for partial leak tests of interconnect)

    • Special quadrupoles for LSS and DS are also very late

  • Reliability of transport system:

    • Problem with EL power distribution line  replace all breakers (~1 month)

    • Problem with safety valve of unloading equipment (risk to drop a magnet!)

       test and replace all valves (~1 month)

    • Problems with overheat, guiding line, oil for axle, etc…

  • “Small incidents” create discontinuities and have severe

    consequences on the organisation of co-activities in the tunnel

S.Weisz



Status of cryo magnet interconnect

*foresee 7 months for the 1st sector, then 5 months per sector

Status of cryo-magnet interconnect:

  • Sector 7-8:

    • LSS8L: expected for November, not started yet

    • Arc: expected 50% done by end of year, 29 in progress (14%)

  • Sector 8-1:

    • Arc: expected 70% done by end of year, 52 in progress (25%)

  • Sector 4-5:

    • Arc: expected 25% done by end of year, about to start …

S.Weisz


Part i status of installation and present delay
Part I: status of installation and present delay

Still on time?

  • No, minimal delay of 3 months, up to 5 months on procurement

    of certain elements

What did we learn?

  • Experience with new activities: QRL pressure & cold tests,

    magnet transport & interconnect, installation & test of power

    converters, etc…

  • Leak tests and leak finding are very delicate, they consume

    more time than expected

  • Co-activities versus efficiency, we are close to saturation!

S.Weisz


Part ii can we limit the increase of the delay
Part II: can we limit the increase of the delay?

  • The “hard limits”:

    • Present schedule for QRL installation

    • Magnet transport rates

    • Procurement of the special SSS

    • Present schedule for the DFBs

  • Hand over to the Hardware Commissioning:

    • Interconnect, global leak tests & cryostat closure scenario

    • Dates when sectors are ready for Hardware Commissioning

S.Weisz


New schedule for qrl installation
New schedule for QRL installation:

Last sector (sector 1-2) expected by August 06, now scheduled for November

  • maintain present delay on QRL installation

S.Weisz


Cryo magnet transport rate
Cryo-magnet transport rate:

  • Cryo-magnet transport vehicles:

    • 2 “CTV” convoys for dipoles only

    • 2 “MCTV” convoys for dipoles and long special SSS

    • 2 “STV” convoys for arc SSS and short special SSS

  • Transport with CTV & MCTV convoys:

    • 1232 MB, 24 Low-, 24 long special SSS, 16 D1/2/3/4 = 1296 elements

    • 240 are now in place  1056 to go

    • Assume transport rate with CTV & MCTV at 15/week until Easter, then at 18/week takes 61 weeks in total  March 2007*

  • Transport with STV convoys:

    • 376 arc SSS and 74 short special SSS = 450 elements

    • 52 are now in place  398 to go (7.5 on average over 61 weeks!)

  • SSS(arc + short special) for sector 5-6 & 6-7 will come through Point 6

    (storage & final preparation in UX65, could reach 2 transports/day/STV)

  • Reduce delay with respect to present schedule to 3 months

*assuming no interference with QRL installation in UJ22

S.Weisz


Special sss dashboard previsions at increased rate
Special SSS dashboard previsions at increased rate

Rate of cryostating of special SSS in 904 has to increase (1.15 S4/week)

Rate of cold tests of special SSS has to go up to 1.25 S4 /week.

Last special SSS installed in the tunnel at the end of March 07.

S.Weisz

N. Catalan Lasheras, S4 coordination – January 13th, 2006


Latest DFB in sector

15-Apr-06

7-8

8-1

15-Jul-06

15-Sep-06

4-5

3-4

11-Aug-06

07-Sep-06

5-6

23-Oct-06

6-7

1-2

02-Dec-06

2-3

04-Feb-07

DFB Project

A Perin – MARIC

December 21st, 2005

S.Weisz


Dfb versus cryo magnet installation

Up to 4 months lag

behind

magnet transport

DFB versus Cryo-magnet Installation

S.Weisz


Welding V1, V2, E, X, C’, K2, Brazing BP, spools, Y - ic/ic - 8 days - CRI

Partial Assembly Qualification - 2 cell / 2 cell- 1day - MEL

Welding : M1, M2, M3, K1 - 2 cell / 2 cell - 1day -CRI

Line N insertion - 2 cell / 2 cell - 3 days- CRI

6 weeks for a late

isolated element

Line N cabling - 2 cell / 2 cell - 1 day - CRI

AIV - 2 cell is tested with its successor and predecessor - 3 days - MEL

Provisionnal closure - ic/ic - 4 days - CRI

Vacuum tests - Between 2 SSS with plugs - 2 wks - VAC

9 weeks between transport

of cryo-magnets and end of

Interconnect Phase I

Interconnect Phase I:

S.Weisz


Interconnect global pressure leak tests and cryostat closure
Interconnect, global pressure & leak tests, and cryostat closure

  • Interconnect Phase I:

    • Requires at least 9 weeks after transport of cryo-magnets

    • Allocate 6 weeks after the transport of a late and isolated DFBA

  • Global pressure & leak tests:

    • Requires all cryo-magnets and DFB’s connected

    • 2 weeks allocated in present schedule (probably very optimistic)

  • Cryostat closure - Interconnect Phase II:

    • Re-open the cryostat to install thermal shield and MLI

    • Close and check leak tightness of the external compensators

    • 8 weeks allocated in present schedule (probably pessimistic)

  • Assume a minimum of 95 days between end of magnet transport

    and availability of sector for HW commissioning

  • Assume a minimum of 80 days between installation of DFBA’s

    and availability of sector for HW commissioning

S.Weisz


Sectors ready for hardware commissioning

5 sectors ready closure

within 4 months

Sectors ready for Hardware Commissioning

S.Weisz


Conclusions
Conclusions closure:

  • Ramping-up of many new activities in 2005:

    • Repair, installation and tests of the QRL

    • Surface logistics, preparation and underground transports of magnets

    • Alignment, interconnect in a difficult environment (space & co-activities)

  • Status of installation versus planning:

    • We are not on time, actual delays spans from 3 to 4 months

    • We are worried by the late procurement of DFB’s, Special SSS’s, and SSS’s with plugs, where peak delays of 5 months with respect to planning occurred

    • Cryo-magnet transport approaching nominal rates, SSS installation through Point 6 should allow to catch-up the SSS backlog

    • Leak test and leak finding require more time than expected

  • Hardware commissioning:

    • Sector 7-8 should be ready for hardware commissioning by August 2006

    • The hardware commissioning of Sector 8-1 will not be finished this year

    • Last Sectors (1-2 & 2-3) should be ready for HW commissioning by August 2007

    • The present schedule of the DFB’s will impose drastic time & geographical constraints for the hardware commissioning

 Situation radically different from last year

S.Weisz


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