Contents
iv H171764_6_001
4.3 Safe Handling of Cryogenic Substances ..........................................................................24
4.3.1 Types of Substances ........................................................................................................24
4.3.2 General Safety Rules........................................................................................................25
4.3.3 Cryogen Transport Dewars...............................................................................................25
4.3.4 Health Hazards .................................................................................................................25
4.3.5 First Aid.............................................................................................................................25
4.3.6 Protective Clothing............................................................................................................26
4.3.7 Other Safety Rules............................................................................................................26
4.3.8 Smoking ............................................................................................................................26
4.4 Liquid Nitrogen Refill.........................................................................................................26
4.4.1 Condensing Oxygen .........................................................................................................27
4.4.2 Nitrogen Flow System.......................................................................................................27
4.4.3 Other General Rules .........................................................................................................27
4.5 Liquid Helium Refill ...........................................................................................................27
4.5.1 The Helium Vessel............................................................................................................28
4.5.2 Helium Refill Instructions ..................................................................................................28
4.5.3 Rapid Helium Transfer ......................................................................................................28
4.6 Ventilation .........................................................................................................................28
4.6.1 Ventilation During Normal Operation ................................................................................29
4.6.2 Emergency Ventilation During Magnet Installation or a Quench ......................................29
4.6.3 Emergency Exhaust..........................................................................................................29
4.6.4 Oxygen Monitor and Level Sensors..................................................................................30
5 Probe Safety Considerations ..........................................................................................................31
5.1 Personnel Safety Issues ...................................................................................................31
5.1.1 First Aid.............................................................................................................................32
6 CryoProbe Safety .............................................................................................................................33
6.1 Emergency Shutoff ...........................................................................................................33
6.2 Personnel Safety Issues ...................................................................................................34
6.2.1 First Aid.............................................................................................................................34
6.3 Pressurized Helium Gas Supply .......................................................................................35
6.4 Electrical Safety ................................................................................................................35
6.5 Equipment Safety..............................................................................................................36
7 CryoProbe Prodigy Safety ...............................................................................................................37
7.1 Personnel Safety Issues ...................................................................................................37
7.1.1 First Aid.............................................................................................................................38
8 Contact ..............................................................................................................................................39
List of Figures...................................................................................................................................41
List of Tables ....................................................................................................................................43
Index ..................................................................................................................................................45
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