1. Endcap shielding senarios:
YE1-2 Gap senarios – (Ref. Boki C vs Surkov 6)
YE1 closed and YE2 opened 3.05m
YE2-3 Gap senario – (Ref Boki E vs Surkov 2)
YE1 open 3.74m YE2 open 3.84m and YE3 opened 7.64m
YE3-4 Gap senario – (Variation of Surkov 3)
YE1 and YE2 closed YE3 open 0.1m YE4 opened 3.8m.
Note 1: YE3 and YE4 can be opened more if gap remains at 3.7m as long as YE4 is not opened more then 6.7m
Note 2: Supporting outriggers with a 3.7m gap and no or minimal bracing to YE3 allows for cherry picker access and maximum crane coverage

2. ISO view of shielding assembly
For guiding into position over beam- pipe
Removable third leg for setting on the floor
Linear slide for bottom lead plates

3. Step 1 - Drilling and taping of holes for shielding support
Steps of installation
Step 1 - Drilling and taping of holes for shielding support
Note: This is done after the existing beam pipe is removed
Will add a view to show drilling

4. Step 2 - Install permanent mounts
Note: leaving the shielding mounting hardware on YE2 requires a small modification to the spacer disk shielding
Will add a view to show permanent mounting features

5. Step 3 - Installation of the guides
The guide post slides into base and is secured with a quick release pin. The guides should be installed for both the external and internal shielding assemblies
Base
Guide
Weight is approximately 10 pounds (5 kg)
Rated side force is approximately 310 lbs(140kg)

6. Step 4 - Adjust pick point on lifting beam
Match the pitch of the shield to the pitch of the hall.
Pick point slides to adjust
Secures pick point to set position

7. Step 5 - Install and secure external half of shielding assembly
ISO view of shielding before installation
Note will show ropes/tethers for additional guidance

8. Step 5 - Continued
Iso view of shielding in place.

9. Step 5 continued - Securing the shielding assembly
End view of shielding in place showing cherry picker positions for securing shielding
Bottom corner of cherry picker
Additional fixtation will be located here

10. Step 6 - Close the bottom doors
Doors must be closed before the second shielding assembly is installed
Will show a end view with doors closed

11. Step 7 - Install and secure IP side of the shielding assembly
Repeat steps 4-6
Will add a view showing the second half being installed

12. Removal Done in reverse order of assembly
Note: If additional lead is added after installation, it must be removed to establish the original center of gravity. The pick point of the lifting beam must be returned to its original position for that assembly before removing that assembly

13. Adapter is required for mounting the to the front of the YE3 disk
Adapter for mounting on YE3
Top mount point on YE2

14. Side view of shielding mounted in YE2-3 gap
Will add view

15. T1 cables and flexible pipes will be pulled back to the external side of the YE4 inner disk
The cables and flexible gas and water lines will be disconnected from the IP side of the YE4-outer so it can be moved with the YE4 wall. The cables and flexibles will be tied back on the external side so that they are not damaged when the shield is installed on the IP side?
View of the external side of the YE-4 inner

16. Side view of shielding in YE3-4 gap
Will add view

17. Strength of M20 fasteners
2xM20 Rx Ry
Reacts against the 10mm step of the inner ring
2663
875
2750kg (6050lbs)
FS=5.5 w/o 10mm step and nofriction Rx

18. Plan for testing the shielding assembly
Will show shielding mounts being tested by hanging assembly on a fork lift.

19. Back up slides follow this page

20. Widest part if beam pipe is bracket for vacuum pump at 440mm

21. Cherry picker access to end cap gaps

22. Another ISO view

23. Side View of shield in place