m. karppinen te-msc-ml on behalf of s. atieh, p. cruikshank, m. duret, j-c. perez, v. parma, t....

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


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

]


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

]


8 DN200 + 8 DN100

Marginal, >1.5 bars, if T>80K install 12 x DN 200

L.Tavian



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



Courtesy of T. Renaglia

DN200 Point-6 (8xMB)


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


M. Duret, P. Lambert, J-F. Rakotoarison

Core drilling machinesCore drilling machines

T. Renaglia


Local Leak detectionLocal Leak detection

Rubber sealRubber sealP. Cruikshank


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)


DN200 Installation Schedule (27 Feb)


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

m. karppinen te-msc-ml on behalf of s. atieh, p. cruikshank, m. duret, j-c. perez, v. parma, t....

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