HORN RADI OACTI VE HANDLI NG CERN - CNGS Project CERN - S. Rangod/ - - PDF document

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HORN RADI OACTI VE HANDLI NG CERN - CNGS Project CERN - S. Rangod/ - - PDF document

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1 HORN RADI OACTI VE HANDLI NG CERN - CNGS Project CERN - S. Rangod/ EP NBI 2003 November 2003 Summary 1 Underground structures General layout of t he t arget chamber (hor n area) 2 Handling equipment in the target chamber 2.1

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SLIDE 1

November 2003 CERN - S. Rangod/ EP 1

CERN - CNGS Project NBI 2003 HORN RADI OACTI VE HANDLI NG

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SLIDE 2

November 2003 CERN - S. Rangod/ EP 2

Summary

  • 1 Underground structures

General layout of t he t arget chamber (hor n area)

  • 2 Handling equipment in the target chamber

2.1 - Crane (main charact erist ics, limit s, precision … ) 2.2 - Crane lif t ing beam

  • 3 Horn exchange procedure (removal)

3.1 - Horn disconnect ion f rom t he st rip-line (Fast Coupling Syst em) 3.2 – Removal sequence (shield arrangement under development )

  • 4 Horn transport to the storage gallery f or “hot components”

General layout of t he underground areas concerned

  • 5 Spare horn installation

I nst allat ion procedure

  • 6 Conclusions
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SLIDE 3

November 2003 CERN - S. Rangod/ EP 3

CNGS Underground structures

(t arget area)

Target chamber Access galleries Storage gallery Ventilation chamber Junction chamber Service gallery Access gallery HORN PULSE TRANSFORMER STRI PLI NE

Slope 5. 66% 2%

  • 1. 15%
  • 2. 24%

Horizontal f loor

  • rage

gallery Junction chamber Target Chamber Ventilation chamber n beam line Neutrino access gallery Slope 5. 66% 2%

  • 1. 15%
  • 2. 24%

Horizontal f loor

  • rage

gallery Junction chamber Target Chamber Ventilation chamber n beam line Neutrino access gallery St Proto St Proto

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SLIDE 4

November 2003 CERN - S. Rangod/ EP 4

TCC4 Handling equipment

  • TCC4 gallery is equipped wit h a radiat ion hard underslung crane. The very

limited space and saf ety aspects make the crane quite complicated.

  • Main parameters:

– Maxi working load of t he main hoist : 7.5 T corresponding t o t he weight

  • f t he heaviest CERN shielding blocks

– Maxi working load of t he auxiliary hoist : 5 T – Theoret ical posit ioning precision: +/ - 2.5 mm – Slope: 5.66 % (ident ical t o t he beam slope and TCC4 f loor) – St ainless st eel rails and racks – One video camera f ixed on t he main hoist chariot

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SLIDE 5

November 2003 CERN - S. Rangod/ EP 5

Area covered by the main hoist (cross sect ion)

Horn outer conductor

1000 1600 4525

1800

3600

1950

3400

Approach distances of Main hoist

Area covered by the main hoist Area covered by the auxiliary hoist

2800 3000 Shield

Limit distances of the main hoist

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SLIDE 6

November 2003 CERN - S. Rangod/ EP 6

Lif ting beam proposal

250 R205 15 2 7 b e t w e e n e x t r e m i t y h

  • k

s T

  • t

a l l e n g t h : 3 m a x i 388 10 S p e c i f i c h

  • k

s w i t h a d j u s t a b l e p

  • s

i t i

  • n

( s h a p e n

  • t

y e t d e t e r m i n e d ) All pawls will be removed later (after handling tests and first installation) 3 6 t

  • t

h e T C C 4 f l

  • r

Ø30 Working Load 7500 Kg WL 3750 Kg WL 3750 Kg 232 260 The central rotating double hook can be blocked each 90° S l

  • p

e : 5 . 6 6 % 55 9 2 ( m i n i ) 2 2 ( m a x i ) 1 1 x 5 ( p i t c h ) 45

Extremity hooks used f or the horn handling

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SLIDE 7

November 2003 CERN - S. Rangod/ EP 7

CNGS Horn – general assembly

Court esy S. Wallon/ LAL

St irrups f ixed t o t he base f rame of t he horn

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SLIDE 8

November 2003 CERN - S. Rangod/ EP 8

Horn and stripline arrangement

(Shielding not shown)

Fast Coupling System Stripline part 3 Stripline part 1 Stripline part 2 Link section HORN BEAM

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SLIDE 9

November 2003 CERN - S. Rangod/ EP 9

Horn removal procedure (Disconnect ion of t he Fast Coupling Syst em)

Shielding wall Passageway

Court esy S. Wallon/ LAL

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SLIDE 10

November 2003 CERN - S. Rangod/ EP 10

Horn removal procedure (Disconnect ion of t he Fast Coupling Syst em)

Shielding wall Passageway Opening f or access to the nuts

  • f the Fast Coupling System

Court esy S. Wallon/ LAL

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SLIDE 11

November 2003 CERN - S. Rangod/ EP 11

Horn removing sequences (Top view)

BEAM Target I ron collimator HORN

Sequence 1

Through t he side wall, unscrew t he 5 nut s (M16)

  • n t he Fast Coupling Syst em t o release t he horn

f rom t he st ripline part 1 Fast Coupling System Stripline 1 Stripline 2 Link section Side wall shielding Stripline 3 Passageway Trench

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SLIDE 12

November 2003 CERN - S. Rangod/ EP 12

Horn removing sequences (Top view)

I ron collimator HORN

Sequence 2

Manually remove t he link sect ion locat ed in t he t rench Disconnect t he cooling wat er f lexible t ube Fast Coupling System Stripline 1 Stripline 2 Link section Stripline 3 Side wall shielding Passageway BEAM Target Trench

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SLIDE 13

November 2003 CERN - S. Rangod/ EP 13

Horn removing sequences (Top view)

I ron collimator HORN

Sequence 2

Manually remove t he elect rical link locat ed in t he t rench Disconnect t he cooling wat er f lexible t ube Fast Coupling System Stripline 1 Stripline 2 Stripline 3 Side wall shielding Passageway BEAM Target Trench

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SLIDE 14

November 2003 CERN - S. Rangod/ EP 14

Horn removing sequences (Top view)

I ron collimator HORN

Sequence 3

From t he passageway, slide st ripline 1 downst ream By 100 mm Fast Coupling System Stripline 2 Stripline 3 Stripline 1 Side wall shielding Passageway BEAM Target Trench

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SLIDE 15

November 2003 CERN - S. Rangod/ EP 15

Horn removing sequences (Top view)

I ron collimator HORN

Sequence 3

From t he passageway, slide st ripline 1 downst ream By 100 mm Fast Coupling System Stripline 2 Stripline 3 Stripline 1

100 mm

Side wall shielding Passageway BEAM Target Trench

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SLIDE 16

November 2003 CERN - S. Rangod/ EP 16

Horn removing sequences (Art ist view)

Court esy: LAL/ Orsay Stripline Part 1 Stripline Part 2 Stripline Part 3 Link section Fast Coupling System BEAM

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SLIDE 17

November 2003 CERN - S. Rangod/ EP 17

Horn removing sequences (Cross sect ion)

Concrete I ron Marble Fast Coupling System Trench

Link sections Stripline 2 Stripline 3 Access galleryTSG43 Stripline 1

Sequence 4

Wit h t he crane, remove t he iron blocks of t he t op shield (aut omat ic clamping syst em) Passageway

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SLIDE 18

November 2003 CERN - S. Rangod/ EP 18 Concrete Marble Fast Coupling System Trench

Stripline 2 Stripline 3 Access galleryTSG43

Sequence 4

Wit h t he crane, remove t he iron blocks of t he t op shield (aut omat ic clamping syst em) Link sections Stripline 1 Passageway

Horn removing sequences (Cross sect ion)

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SLIDE 19

November 2003 CERN - S. Rangod/ EP 19 Concrete Marble Fast Coupling System Trench

Stripline 2 Stripline 3 Access galleryTSG43

Sequence 5

Wit h t he crane, remove t he t op blocks of t he side shielding wall and t hose in f ront of t he Fast Coupling Syst em Link sections Stripline 1 Passageway

Horn removing sequences (Cross sect ion)

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SLIDE 20

November 2003 CERN - S. Rangod/ EP 20 Concrete Marble Fast Coupling System Trench

Stripline 2 Stripline 3 Access galleryTSG43 Link sections Stripline 1

Sequence 5

Wit h t he crane, remove t he t op blocks of t he side shielding wall and t hose in f ront of t he Fast Coupling Syst em Passageway

Horn removing sequences (Cross sect ion)

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SLIDE 21

November 2003 CERN - S. Rangod/ EP 21 Concrete Marble Fast Coupling System Trench

Stripline 2 Stripline 3 Access galleryTSG43

Sequence 6

The horn is t hen t ransport ed upst ream, wit h t he crane t o t he j unct ion chamber Link sections Stripline 1 Passageway

Horn removing sequences (Cross sect ion)

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SLIDE 22

November 2003 CERN - S. Rangod/ EP 22 Concrete Marble Trench

Stripline 2 Stripline 3 Access galleryTSG43 Link sections Stripline 1

Sequence 6

The horn is t hen t ransport ed upst ream, wit h t he crane t o t he j unct ion chamber Passageway

Horn removing sequences (Cross sect ion)

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SLIDE 23

November 2003 CERN - S. Rangod/ EP 23 Concrete Marble Trench

Stripline 2 Stripline 3 Access galleryTSG43 Link sections Stripline 1

Sequence 6

The horn is t hen t ransport ed upst ream, wit h t he crane t o t he j unct ion chamber Passageway

Horn removing sequences (Cross sect ion)

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SLIDE 24

November 2003 CERN - S. Rangod/ EP 24 By hand adjustable part (SL1) I ron

Sequence 7

Lower t he horn ont o a mot orized t r ailer* in t he j unct ion chamber * Under development

Trailer Horn base f rame Guiding rail Lif ting beam device Junction chamber extension

Horn removing sequences

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SLIDE 25

November 2003 CERN - S. Rangod/ EP 25

Transport of the horn

(f rom t he t arget chamber t o t he st orage gallery)

Proton beam tunnel Ventilation Chamber

Hook limit s

Service gallery Storage chamber

S l

  • p

e 2 %

A c c e s s g a l l e r y

Slope 5.6%

Junction chamber

Shielding blocks Guiding rail embedded in the concrete 20 m 15 m

Target chamber

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SLIDE 26

November 2003 CERN - S. Rangod/ EP 26

Horn exchange installation sequences

1- The spare horn is brought t o t he j unct ion chamber, picked up by t he crane and inst alled on t he adj ust able f eet (posit ioning t olerance: r = 50 mm) 2- The horn alignment can be checked, if necessary, at t his st age. Bot h horns are supposed t o be ident ical t o +/ - 0.5 mm t olerances. 3- The shielding is re-inst alled, except f or t he block(s) in f ront t he FCS. 4- From t he passageway, slide st ripline 1 upst ream by 100 mm and f ine adj ust t o t he exact posit ion of t he horn. 5- The f ive nut s of t he FCS are t ight ened. 6- The shielding blocks are placed in posit ion in f ront of t he FCS . 7- I n t he t rench, out side t he shielding t he link sect ion is reinst alled. 8- The cooling wat er f lexible t ube is re-connect ed

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SLIDE 27

November 2003 CERN - S. Rangod/ EP 27

Conclusions

Even if …

  • Posit ioning t olerances of t he crane conf or m t o t he t echnical specif icat ions
  • All horn t olerances are respect ed
  • Fast coupling syst em is now much more easy t o operat e (new design)
  • Fine adj ust ment of t he st rip-line can be done f rom t he passageway (new design)

…the exchange of the horn remains a major operation. The procedure must be caref ully prepared and f ully tested bef ore the beam starts. Outstanding:

  • Trailing hoses (wat er cooling + inert gas)
  • Final shielding conf igurat ion
  • Aut omat ic clamping t ool f or shielding blocks
  • Trailer design