3 Safety
Residual risks
Page
3 - 14
MB-20-G/MB-200G-W_MB-LABmaster_MB-200 MOD_TP700
Operating Manual - V5.0 - 04/2018 - STD
3.13.3 Risk of suffocation
Working with large volume of inert gas in a small room increases the risk of suffocation.
High concentrations of inert gas may lead to the loss of consciousness and injury or suf-
focation if the oxygen concentration in the ambient air drops below 19%.
¡ The selected location must have a room volume that is significantly larger than the
volume inside the glovebox.
¡ The system must be located in a well ventilated area.
¡ Exhaust fumes and gases must be vented via an adequate ventilation system.
¡ Before performing maintenance work inside of an active glovebox, the glovebox at-
mosphere must be completely replaced by ambient room air.
3.13.4 Risk of combustion and explosion
Solvent vapors or hydrogen with a concentration of ≥ 4% in the working gas atmosphere
may be explosive at a temperature higher as 60 °C.
¡ For regeneration of a reactor, a mixture of hydrogen gas and working gas is used.
¡ The maximum concentration of the flammable substance must be below its explosion
temperature limit (4% for hydrogen, this limit can be lower for solvents).
¡ The inert gas system must be equipped with all required safety features.
If in doubt, please contact MBRAUN.
3.13.5 Risks when operating a damaged system
The system is considered unsafe for operation if:
¡ There is any visible damage.
¡ There is a damage or a malfunction of a safety feature.
¡ It fails to perform according to specification.
¡ It has been subjected to prolonged storage under unfavourable conditions.
¡ It has been subjected to severe transport stress.
3.13.6 Risk of environmental damage
The following components and materials may be polluted with toxic substances and can
harm the environment if not disposed properly. None of the following components and
substances is permitted to enter the environmental atmosphere, mains drainage, ground
water, or soil:
¡ All exhaust fumes should be vented through an adequate disposal/ventilation system.
The system must be safeguarded if the room size does not comply with the specifica-
tions.
¡ All components of the gas purification system (including compressor oil) must be dis-
posed of accordance with the applicable national regulations.
¡ Used filters must be disposed of at the local collection point for hazardous waste or in
accordance with applicable local and national regulations.
¡ The contaminated solvent filter medium (activated carbon) must be disposed in ac-
cordance with applicable national regulations depending on the substances used
within the glovebox, and/or as specified in the material safety data sheets.
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