1. Progress on Hydrogen R&D System
Yury Ivanyushenkov
on behalf of
Elwyn Baynham, Tom Bradshaw, Mike Courthold, Matthew Hills, Tony Jones
MICE Collaboration Meeting, RAL, 9 October 2007

2. Scope Hydrogen system manufacture progress
Safety issue: cryostat jacketing
Next steps
MICE Collaboration Meeting, RAL, 9 October 2007

3. Hydrogen System Manufacture Progress
Contract for hydrogen system manufacture was given to AS Scientific Ltd, Abingdon.
Bi-weekly regular meetings with AS.
Manufacture status:
First batch of detailed drawings produced ( see next slides)
Certification of cryostat vessel is on the way
Supplies of valves and safety valves are suggested
Some materials has been ordered
MICE Collaboration Meeting, RAL, 9 October 2007

4. Hydrogen R&D System Layout
MICE Collaboration Meeting, RAL, 9 October 2007

5. Hydrogen R&D System P&ID
MICE Collaboration Meeting, RAL, 9 October 2007

6. Hydrogen R&D System Test Cryostat
Hydrogen R&D System Layout
Hydrogen R&D System Test Cryostat
MICE Collaboration Meeting, RAL, 9 October 2007

7. Hydrogen R&D System Test Cryostat
Hydrogen R&D System Layout (2)
Hydrogen R&D System Test Cryostat
MICE Collaboration Meeting, RAL, 9 October 2007

8. MICE Metal hydride storage tank
Nominal capacity: 2450 g (27 Nm3) H2
Volume of overall storage tank: 250 litres
Overall weight: 375 kg
Dia 470
Top removable thermal insulation cover
Hydrogen connection with shut-off valve and safety valve
Hull cooling
Water/Glycol Outlet, 1”
1680
1590
Internal cooling
Water/Glycol Inlet/Outlet
Hull cooling
Water/Glycol Inlet, 1”
MICE Collaboration Meeting, RAL, 9 October 2007

9. Test cryostat assembly
MICE Collaboration Meeting, RAL, 9 October 2007

10. Hydrogen condenser vessel
MICE Collaboration Meeting, RAL, 9 October 2007

11. Hydrogen vessel
MICE Collaboration Meeting, RAL, 9 October 2007

12. Safety issue: Cryostat jacketing
Safety issues
In the Specification document the cryostat is shown to be covered with a nitrogen jacket.
Tertiary container structure for the test cryostat is difficult to built.
Analysis of requirement for cryostat jacketing is done in the document presented to the MICE TB.
Conclusions and suggestion:
In the steady state scenarios probability of generating an explosive mixture is low
Only in the scenario of a catastrophic vent of the outer vessel an explosive mixture can be formed.
This can be mitigated by bagging ( using a flexible cover) the cryostat with inert gas -> Simple solution can be found .
MICE Collaboration Meeting, RAL, 9 October 2007

13. Next steps Next 3 months: Sign off manufacture drawings
Prepare for the system test at RAL (Cryogenics group lab)
Monitor work on control system by Daresbury group
Prepare ventilation system spec
Make plans for installation of the system in the MICE Hall
MICE Collaboration Meeting, RAL, 9 October 2007

14. Personal
This is probably my last presentation in front of the Collaboration as I will be leaving RAL (and MICE) in about a month time.
Thank you all for a possibility to work with you during these last years.
I wish the Collaboration a successful start of the experiment soon.
Looking forward to continue working with members of MICE on other projects (ILC positron source, superconducting undulators for light sources and FELs etc.)
MICE Collaboration Meeting, RAL, 9 October 2007