Illustration 3-14: Magnet Room Exhaust Fan Schematic with Optional Oxygen Monitor
8.4 Pressure Equalization Vent Requirement
1. A pressure equalizing vent is required in the magnet room ceiling or in the wall, at the
highest point possible
2. The vent minimum size must be 24 in. x 24 in. (610 mm x 610 mm) or equivalent area
3. The pressure equalization vent must be located so any Helium gas is not vented into
occupied areas
NOTE:
Location may affect acoustic noise transmission into occupied spaces.
8.5 Cryogenic Venting
WARNING
CRYOGENIC BURNS OR ASPHYXIATION
FAILURE OF THE CRYOGENIC VENT MAY CAUSE EXTREMELY COLD
HELIUM GAS TO ENTER THE MAGNET ROOM OR OTHER OCCUPIED
BUILDING SPACE. DIRECT CONTACT COULD CAUSE CRYOGENIC BURNS
AND ASPHYXIATION COULD RESULT FROM OXYGEN DISPLACEMENT.
THE CUSTOMER IS RESPONSIBLE CRYOGENIC VENTING. DESIGNERS
AND INSTALLERS OF THE VENT MUST BE FAMILIAR WITH INDUSTRIAL
PIPING SYSTEMS.
SIGNA Voyager Pre-Installation
Direction 5680008–1EN, Revision 2
Chapter 3 Magnet Room
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