MICE Absorber working group meeting @ Columbia, 13 June 2003

1
MICE Hydrogen System. Preliminary HAZOP.
Elwyn Baynham, Tom Bradshaw and Iouri
Ivaniouchenkov, RAL
MICE Absorber working group meeting _at_ Columbia,
13 June 2003
2
Hydrogen flow and safety system
Version 09/06/2003
He / N2 Purge system
18 K He to Compressor via Radiation shield
14 K He from Cold box
P
Fill valve
X 2
X 2
H2 Gas bottle
1.7 bar
2.1 bar
12 litre Buffer tank
Liquid level gauge
Vent valve
Vent outside flame arrester
Vacuum
Ventilation system
Internal Window
LH2 Absorber
70 K Safety window
Vent valve
LHe Heat exchanger
Vent outside flame arrester
Evacuated vent buffer tank Volume
Vacuum vessel
Hydrogen module enclosure (igloo)
Pressure relief valve
Pressure regulator
Non-return valve
Pressure gauge
Vacuum pump
Valve
Bursting disk
MICE Absorber working group meeting _at_ Columbia,
13 June 2003
3
Node 1 Hydrogen tank Intent To keep hydrogen
gas in the tank-hydrogen vessel closed system.
MICE Absorber working group meeting _at_ Columbia,
13 June 2003
4
Node 2 Hydrogen absorber internal vessel with
hydrogen windows. Intent To keep hydrogen
liquid inside hydrogen absorber module.
5
Node 3 Hydrogen absorber vacuum jacket with
safety windows. Intent - To insulate thermally
the internal hydrogen vessel . - To
provide additional barrier for air .
MICE Absorber working group meeting _at_ Columbia,
13 June 2003
6
Node 4 Buffer tank. Intent To quickly relief
pressure in the absorber module in case of window
burst .
MICE Absorber working group meeting _at_ Columbia,
13 June 2003
7
Node 5 Hydrogen module enclosure. Intent To
localize and vent hydrogen in case of hydrogen
leak .
MICE Absorber working group meeting _at_ Columbia,
13 June 2003