LH2 system R

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LH2 system RD status and plans
Yury Ivanyushenkov for RAL EID group Applied
Science Division, Engineering and Instrumentation
Department RAL
MICE-UK Collaboration Meeting, DL, January 10,
2006
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Scope

• Design and Safety Review of the MICE Hydrogen
  Delivery System, RD Stage.
• 21-22 November 2005 at RAL
• Project status and plans

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Safety Review Roadmap

• Set up by MICE management with RAL approval

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Review panel
Gary Allen RAL Gianpaolo Benincasa CERN Peter
Bout Air Products John Dowell
Birmingham (Chair) Jane Vickers
RAL (Secretary) John Weisend SLAC Jim
Wells RAL
MICE-UK representatives Ken Long and Paul
Drumm MICE representative Mike Zisman
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Terms of reference

• Scope of the review
• To examine the mechanical, electrical and
  functional design of the hydrogen delivery system
  and test cryostat proposed to be used for the RD
  examination of the parameters needed for MICE.
• To consider the design and the test programme in
  terms of the applicability to the ultimate
  application in the MICE experiment.
• To recommend what further level of review is
  required, by highlighting potential risks, before
  the results of the RD are implemented in MICE
  absorber focus coil module.
• To report the findings to the ISIS management
  responsible for ISIS Facility Safety.

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Terms of reference (2)

• General questions to the review
• Does the proposed design allow for safe operation
  of the system and does it comply with the
  appropriate design codes?
• Does the proposed operational plan allow for safe
  operation of the system including the case of
  failures?
• Is the proposed environment (experimental hall,
  surrounding activities, and adjacent hazards)
  considered safe to carry out the proposed work?
• Is the system likely to achieve the stated
  scientific aims and are the risks commensurate
  with the value of the results?

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Overview of talks
Talks are on the web http//www.isis.rl.ac.uk/acc
elerator/mice/hreview/index.html
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Objectives of RD - by Tom
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Control logic. Helium purge sequence - by Mike
Evacuate
Evacuate
Purge Sequence
Evacuate
Close PV18, Open PV19, Open CV4 100
Close PV18, Open PV19, Open CV4 100
Open PV19
H2 system pump on, valves ready
VG5lt1mbar
VG5lt1mbar
VG5lt1mbar
No
No
No
VP1 On Close PV1,18,19 Close PV14,17 Open
PV2,3,5,7 Open CV4 100
Yes
Yes
Yes
System evacuated
System evacuated
System evacuated
Purge
Purge
Purge
Close PV19 Open PV18 Open CV4 5 to control flow
Close PV19 Open PV18 Open CV4 5 to control flow
Close PV19 Open PV18 Open CV4 5 to control flow
1barltPG1lt1.3bar AND 1barltPG2lt1.3bar
1barltPG1lt1.3bar AND 1barltPG2lt1.3bar
1barltPG1lt1.1bar AND 1barltPG2lt1.1bar
Leave system under pressure
No
No
No
Close PV18 Open CV4 100
Yes
Yes
Yes
System purged
System purged
System purged
H2 System Purged
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Control sequences. Example spreadsheet - by Mike
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Hydrogen system PID by Matthew
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Hydrogen RD system test area layout - by Tony
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Hydrogen system test cryostat - by Tony
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Hydrogen system HAZOP. Node 1 - by Yury
Node 1 Metal hydride storage unit
Intent To keep hydrogen gas in the storage unit
- absorber vessel closed system.
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Review results

• A number of useful comments are given by the
  Review panel to the group.
• The panel has sent their recommendations to Tim
  Broome.
• The group is waiting for the Tims conclusions.

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Project status and plans

• Design
• Conceptual design is completed.
• Detailed design for the test cryostat is done.
• Detailed design for the gas panel to be started.
• Hardware
• Requisition form for the metal hydride storage
  unit is now signed by Paul.
• Delivery time is 16 weeks after order.
• Technical specification for the test cryostat is
  being prepared.
• Control system
• Detailed design to start soon
• Hydrogen safety
• Next step depends on the recommendations by Tim
  Broome