HAZARDOUS TO CONTAIN DANGEROUS venting for the body, flammable or explosive

Chapter IV

Good evening!

Foul air evacuation
Exhaust ducts suction pressure of plants are installed in areas where the leaks caused by leaks vicierea not create danger to human health, risk of damage to the building, fire or explosion.
Air polluted with dust, smoke, gases and vapors will be cleaned before discharge to the atmosphere, to avoid environmental pollution, in cases that exceed the maximum concentrations in the atmosphere admise. Discharge foul air that contains toxic, corrosive or flammable devices will be the exhaust air to provide a vertical direction, up
Avoid placing outlets on the wall of the building exposed to prevailing wind, or will take measures to protect air outlet opening against the action of wind.

Combination hot air ventilation with heat
Fan heaters will be used in areas with the release of vapors or combustible gas, when their ignition temperature associated with heat temperatures can cause hazardous conditions.
Recirculation is prohibited if it contains toxic substances, irritants, with pathogenic microorganisms, if possible a sudden release of hazardous substances or technology rooms on the danger of fire classified in categories A and B.

Ventilation fault
It allowed emergency ventilation in rooms where it is possible sudden release of a toxic or flammable volume that facilities designed for normal I can not evacuate in time required to restore normal working conditions. Order startup and shutdown of emergency equipment will be provided automatically or manually, both inside and outside the room served by devices placed near the entrance doors.
Installation of emergency will be independent of any other ventilation plant room. . Electric interlock system is used to introduce air facility so can not function during the purging rooms.
Air intake for compensation is made only by nature, that through the windows and exterior doors or holes provided for this purpose.

Terms Of Use fans
Fans mounted in inteiorul buildings belonging to introduce fresh air systems or air intake bad for rooms where gas is released that is combustible substances, fumes or dust in quantities which may form explosive mixtures with air. Drive motors of these fans and electrical installations for construction will be explosion.
Fans will be provided with these measures of protection and insurance for correct operation:
Making the right connections in the terminal box of the electric motor so that the meaning of spinning the blades to be correct.
When installing fans in the average fire danger will not use damping with steel springs. Earthing electric motor

Ventilation air aspiration through local
Above the sudden and violent sources releasing gas hoods are mounted receiver with great depth, so that air flow can escape danger evacuate without their harmful substances in the work area
The use of suction on the sides of vertical niches are recommended in case the generation of harmful substances is done with violence and danger out harmful particles inside niches.

Best regard !