1st ltex 22 june 2009d.lacarrere1 protection of ux85 edms no 1005700 ip8 current status & plans ...

1st LTEX 22 June 2009 D.LACARRERE 1

Protection of UX85

EDMS No 1005700

IP8

Current Status & Plans

UX85 Expt Area

RB84 (8-7 sector)

RB86 (8-1 sector)

Works to be done

Remarks 15 June 2009

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Pit 8 – LHCb - UX85 Area

ACCESSPERSONNEL

PM SHAFTUXA

IP8

ACCESSEQUIPMENTPX SHAFT

RADIATION SHIELD

UXCUXB

Access - CheckingPersonnel & Materials

UXA – LHCb Protected AreaUXB – LHCb Detector AreaUXC – LHC Cryogenics

Accessible Area when LHC operates

BEAM 2

BEAM 1

POINT 1(ATLAS)

ACCESSPERSONNEL

PZ SHAFT

UX85 CAVERN

RB86

RB84

SHIELDING PLUGS

FIG. 1

UJX Gallery

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Shielding Plug – RB84 Area

2200

REF. : Document edms no 38083FIG. 2

Beam Axis

IP8

10400Fe Concrete

Concrete

8001200800

Air flux

holes

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RB84 - Segmentation (reminder)

January 2008

Mobile door

Concrete blocks

Aperturefor survey

View from LHC tunnel FIG. 3

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August 2008

Air tightness – First Improvements (August 08)

Metallicjoints

View from LHC tunnel FIG. 4

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18 June 2009FIG. 5

RB84 side - Current Status (June 09)

- Joints filled with PUR- Joints sealed with concrete- Painting

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Aluminium Cover Sheets

Al sheet removable

FIG. 6

Al sheetsremovable

View from LHC tunnel

Al sheetsfixed to tunnel

Additional Improvements (?) (not yet decided)

Installation of Al cover sheets

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19900 from IP8

FIG. 7

Beam Axis

24622 from IP8

FeConcrete

REF. : Document edms no 38083

1200 800

RB86 Area - Improvement Tightness

MF4

MF

4

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Hole 800 x 800 mm2

MF4 – Central Part

NO ACTION

FIG. 8

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Joint PUR + concreteMetallic sheets (Al 8 mm thick)

Joints & Metallic sheets

FIG. 9

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Holes in the chicane

PROPOSED ACTIONS 1 - STRENTHEN SECTOR DOOR2 – FILL HOLE DEDICATED TO SURVEY PIPE

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False floor in the chicane

ADDITIONAL CONCRETE BRICKSIN THE FALSE FLOOR

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RB84 Side- Mechanical stability of the 1st concrete shield (front of VELO) to be checked with a pressure of 40 mbar. Calculations has been performed by J.C. Batista Lopes DG-SC edms 1005362/1 19 June 2009) – Conclusion : Good stability up to pressure 75 mbar – sliding of upper part - Installation of aluminium cover sheets (LHC tunnel side)- Work scheduled fro week 26

RB86 Side- All main joints (MF4) will be filled with PUR or plastic seal (in particular small gaps) + special concrete (repair cement) + cover sheets.- Strengthen of the sector door (?) . But how. - Cover the cryo-line with aluminium sheets (8-10 mm thick)- Work scheduled for wks 30 – 31

Summary – Main Works on going

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Remarks UJX Tunnel (from UJ87 up to PX shaft)

- Mechanical stability of the wall between tunnel & UJX to be checked with a pressure of 40 mbar. Contact with GS-CE Group

US85/UX85- Wall between US85 & UX85 is made of “SIPOREX” concrete (20 cm thick) Mechanical stability to be check (?)

BUDGET & COORDINATION

- Budget code to be used ? Machine side ?- How to proceed ? - Coordination on site – Who ?

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