Bruker BioSpec 117 AVANCE III, Manual

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12 ID: 182463115
Safety
2.2.3 O2 Supervision
The correct function of ventilation system in the magnet room and in storage locations of cryo-
genic liquids is a basic requirement for the safe operation of magnets using liquid cryogens like
N2 or He. In order to establish a second safety level, and especially for magnets that involve
liquid He and N2, Bruker BioSpin MRI strongly recommends the installation of an O2 supervision
system in the magnet room and in storage locations of cryogen liquids.
An O2 supervision unit is not part of the delivery of the MR instrument. It is the responsibility of
the system owner to decide on the usage of O2 supervision systems and to install such systems
in his laboratory. MR compatible O2 supervising units can be obtained from various commercial
providers.
2.2.4 Emergency plan
The conduct of staff and external parties in an emergency must be included in installation plan-
ning and the operation of the system and must be communicated to offices that may be affected.
Therefore emergency access to the control areas by appropriate means must be guaranteed
and the following organizations must therefore be trained in the risks and correct behavior :
▪ Building administrators
▪ Fire department
▪ Police
▪ Emergency paramedics
▪ Building security
Attention must be paid in planning laboratory facilities to ensure that non-magnetic emergency
equipment is available, or that it is possible to use the equipment safely within the control area:
▪ Provision & labeling of non-magnetic fire extinguishers
▪ Use of emergency lighting suitable for magnetic fields (see Chapter
Lighting system
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)
▪ Prevention of use of ferromagnetic oxygen cylinders by emergency personnel
▪ Clarify use of defibrillators in the control area.
WARNING
Blocking of escape routes from overpressure
During a magnet quench, an over pressure situation arises in the magnetic room. Escape
routes and emergency exits must be designed so that they work reliably under pressure con-
ditions.
WARNING
Failure of ventilation system
The correct function of the ventilation system in the magnet room and in storage locations is
a basic assumption for the safe usage of superconducting magnets and for the handling of
cryogen liquids. Therefore, the correct function of the ventilation system needs to be moni-
tored and supervised continuously.