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Pressure relief valve DN200 Status 05/03 Sectors 1-2, 3-4, 5-6, 6-7. M. Karppinen TE-MSC-ML on behalf of S. Atieh, P. Cruikshank, M. Duret, J-C. Perez, V. Parma, T. Renaglia, S107, S108, Dubna teams. SV. SV. SV. SV. SV. Cold sectors , new (temporary) relief scheme. - PowerPoint PPT Presentation
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M. Karppinen TE-MSC-MLon behalf of
S. Atieh, P. Cruikshank, M. Duret, J-C. Perez, V. Parma, T. Renaglia,
S107, S108, Dubna teams
Pressure relief valve DN200 Status 05/03
Sectors 1-2, 3-4, 5-6, 6-7
05-Mar-091
M. Karppinen TE-MSC-ML
Cold sectors, new (temporary) relief scheme
2
Keep existing 2 DN90 relief devices Mount relief springs on 5 DN100 vac. flanges Mount relief springs on 8 DN100 BPM flanges Mount relief springs on 4 DN63 cryo.instr. flanges
Cross section increase: x 10
PTQVQV QV QVQV SVSV
Q D D QD D D QD D D QD D D QD
SV SVSV SV SV
2 kg/s
20 kg/s
40 kg/s
DP1
1.5
2
2.5
3
3.5
4
0 20 40 60 80 100 120
Vac
encl
osur
e P
[bar
]
Vac enclosure He T [K]
3.32.8
V. Parma Chamonix 2009
L.Tavian
Pressure for MCI still high and well above 1.5 bars design pressure
Reinforced ground fixations for SSS with vacuum barriers are being studied (see O. Capatina’s talk)
Further testing of support posts and vacuum barriers to assess next structural limit
05-Mar-09M. Karppinen TE-MSC-ML
Warm sectors: New overpressure relief scheme
3
Keep existing 2 DN90 relief devices Mount relief springs on 4 DN100 blank flanges Add 12 DN200 new relief devices (1 per dipole)
Cross section increase: x 33
PTQVQV QV QVQV SVSV
Q D D QD D D QD D D QD D D QD
SV SV SV SV SV SV SV SV SV SV SV SV SV SV SV SV SV
V. Parma Chamonix 2009
2 kg/s20 kg/s
40 kg/s
DP
1
1.1
1.2
1.3
1.4
1.5
1.6
0 20 40 60 80 100 120
Vac
encl
osur
e P
[bar
]
Vac enclosure He T [K]L.Tavian05-Mar-09M. Karppinen TE-MSC-ML
Special cases
4
Mid-arc vacuum sub-sectors: ½ length insulation vacuum sub-
sector (~100 m) 6 dipoles only 6 DN200 relief
devices 2 SSS 4 DN100
2 kg/s
20 kg/s
40 kg/s
11.21.41.61.8
22.22.4
0 20 40 60 80 100 120
Vac
encl
osur
e P
[bar
]
Vac enclosure He T [K]
6 DN200 + 4 DN100
L.Tavian
>1.8 bars install 12 x DN200 (2 per MB)
DS zones: 20% shorter insulation vacuum sub-
sector (~170 m) 8 dipoles only 8 DN200 relief
devices 4 SSS (Q11-Q8), [5 around Pt.3-7
(Q7)] ~ 8 DN100
2 kg/s
20 kg/s
40 kg/s
11.11.21.31.41.51.61.7
0 20 40 60 80 100 120
Vac
encl
osur
e P
[bar
]
Vac enclosure He T [K]
8 DN200 + 8 DN100
Marginal, >1.5 bars, if T>80K install 12 x DN 200
L.Tavian
V. Parma Chamonix 2009
05-Mar-09M. Karppinen TE-MSC-ML
DN200 Std. Location
05-Mar-09M. Karppinen TE-MSC-ML5
Courtesy of T. Renaglia
Relief valve: detailed view
6
Top position is best for safety (personnel, H/W). IFS end best for flow conductance through thermal shield (large
openings). Interconnection sleeve (W bellow) need to be opened to protect MLI
(fire risk due to hot metal chips).
T. Renaglia
05-Mar-09M. Karppinen TE-MSC-ML
05-Mar-09M. Karppinen TE-MSC-ML7
Courtesy of T. Renaglia
DN200 Point-6 (8xMB)
05-Mar-09M. Karppinen TE-MSC-ML8
Protective measuresProtective measures
Opening W bellows
Protection of the IC
IFS covers
MLI protection
DN200 Status: Preparation Personnel:
Three contracts: S107 (6+1), S108 (6+1), ATLAS-Dubna collaboration (6) 2 teams of 3 (1 welder + 2 mechanics) per sector. Dedicated FSU (S108) team of 10 persons opening and closing W bellows.
Material & Tooling: All tools and equipment available. 420 nozzles delivered. Blank flanges expected W10 (TBC) Issues with the cutting machines: Modifications to improve the reliability in
progress. In parallel looking for alternative solutions. Machine for in-situ rectification of the sealing surface being commissioned.
Quality control: Visual inspection of the welds being done by external welding inspectors. Dimensional control of the valves (flatness of the sealing surface) Local leak detection equipment tested and qualified. Inspections underway. Leak testing of vacuum sectors after closing the W bellows.
9M. Karppinen TE-MSC-ML 05-Mar-09
05-Mar-09M. Karppinen TE-MSC-ML10
M. Duret, P. Lambert, J-F. Rakotoarison
Core drilling machinesCore drilling machines
T. Renaglia
05-Mar-09M. Karppinen TE-MSC-ML11
Local Leak detectionLocal Leak detection
Rubber sealRubber sealP. Cruikshank
05-Mar-09M. Karppinen TE-MSC-ML12
J-C Perez & T. Sahner
In-situ rectification of the sealing surface
In-situ rectification of the sealing surface
Flatness spec < 0.3 mmFlatness spec < 0.3 mm
DN200 Status: Installation
All magnets marked and the paint stripped off in the arcs and DS. W-bellow opening synchronized with the valve installation.
Installation status (3/3/09):Surface 25 magnets (29 valves)Sector 1-2 34 magnets (44 valves)Sector 3-4 19 magnets (25 valves)Sector 5-6 22 magnets (28 valves)=========================== TOTAL: 100 magnets (126 valves)
13M. Karppinen TE-MSC-ML 05-Mar-09
DN200 Installation Schedule (27 Feb)
14M. Karppinen TE-MSC-ML 05-Mar-09
TotalSector
1-2Sector
3-4Sector
5-6Sector
6-7Remarks
W6 2 2 Surface
W7 11 9 Surface
W8 34 9 11 3 Surface & Tunnel
W9 87 21 12+6 14 Surface & Tunnel
W10 157 30 20 20
W11 235 30 24 24
W12 313 30 24 24
W13 391 30 24 24
W14 473 18 24 24 16
W15 551 12 24 42
W16 634 11 72
W17 672 38
SUM 168 168 168 168
Contract DUBNA S-107 S-108 ALL