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Scope Hydrogen system manufacture progress Safety issue: cryostat jacketing Next steps MICE Collaboration Meeting, RAL, 9 October 2007
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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
Scope
Hydrogen system manufacture progress Safety issue: cryostat jacketing Next steps
MICE Collaboration Meeting, RAL, 9 October 2007
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
Hydrogen R&D System Layout
TestCryostat
Gas Panel
VacuumSystem
Exhaust
Heater Chiller
Hydride Bed
Storage
Buffer Volume Hydrogen
DeliveryControlSystem
MICE ControlSystem
Extraction Hood / Cabinet
Safety Relief
TestCryostat
Gas Panel
VacuumSystem
Exhaust
Heater Chiller
Hydride Bed
Storage
Buffer Volume Hydrogen
DeliveryControlSystem
MICE ControlSystem
Extraction Hood / Cabinet
Safety Relief
Hydrogen R&D System
MICE Collaboration Meeting, RAL, 9 October 2007
Hydrogen R&D System P&ID
H
H
H
H
Hydrogen R&D System P&ID
MICE Collaboration Meeting, RAL, 9 October 2007
Hydrogen R&D System Test Cryostat
Hydrogen R&D System Layout
MICE Collaboration Meeting, RAL, 9 October 2007
Hydrogen R&D System Test Cryostat
Hydrogen R&D System Layout (2)
MICE Collaboration Meeting, RAL, 9 October 2007
MICE Metal hydride storage tank
MICE Collaboration Meeting, RAL, 9 October 2007
Hull coolingWater/Glycol Inlet, 1”
Hull coolingWater/Glycol Outlet, 1”
Dia 470
1590
Hydrogen connection with shut-off valve and safety valve
Internal coolingWater/Glycol Inlet/Outlet
Top removable thermal insulation cover
1680
Nominal capacity: 2450 g (27 Nm3) H2
Volume of overall storage tank: 250 litresOverall weight: 375 kg
Test cryostat assembly
MICE Collaboration Meeting, RAL, 9 October 2007
Hydrogen condenser vessel
MICE Collaboration Meeting, RAL, 9 October 2007
Hydrogen vessel
MICE Collaboration Meeting, RAL, 9 October 2007
Safety issues
Safety issue: Cryostat jacketing
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
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
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
