Utility Requirements
H157655_1_008
71
8.8
Fire Detection System and Fire Extinguishers
Rooms containing NMR magnets should be equipped with
temperature sensors
for fire
detection. These must respond
only
to a sudden rise of temperature, and not be triggered by
a quench (sudden drop of temperature).
Optical smoke detectors cannot discriminate between smoke from a fire and fog from either a
helium refill or caused by a quench, so these may not be used. Combined
heat and smoke
detectors
are recommended instead.
Fire extinguishers
in the vicinity of the magnet room must be
non-magnetic
(stainless steel
or aluminum). It is the obligation of the customer to inform the local fire department about the
dangers of magnetic fields. These magnets stay at field for a long time even in a most blazing
fire!
Ceiling sprinkler heads
should be made of metal instead of glass. A quench could falsely
trigger the alcohol-filled glass vials, which can shatter in the presence of cold helium gas.
Sprinklers should not be located directly over the magnet.
Any sprinkler lines or other metal pipes located above the magnet should be thermally-
insulated to prevent O
2
condensation or water freezing in the line from the large amount of
cold He gas following a magnet quench.
A
pre-action sprinkler system
is recommended, as it is not loaded with water, but is
activated through an interlock mechanism enabling the water to fill the lines in case of a fire.
Summary of Contents for AVANCE
Page 6: ...Contents vi H157655_1_008 ...
Page 24: ...System Components 24 H157655_1_008 ...
Page 32: ...Magnet Access and Rigging 32 H157655_1_008 ...
Page 38: ...Ceiling Height Requirements 38 H157655_1_008 ...
Page 72: ...Utility Requirements 72 H157655_1_008 ...
Page 82: ...Floor Plan 82 H157655_1_008 ...
Page 96: ...CryoProbe and Other Accessories 96 H157655_1_008 ...
Page 102: ...Contact 102 H157655_1_008 ...
Page 104: ...List of Figures 104 H157655_1_008 ...
Page 109: ...H157655_1_008 109 ...
Page 110: ...Bruker Corporation info bruker com www bruker com Order No H157655 ...