sâmbătă, 8 octombrie 2011

Special conditions in central ventilation or ventilation installations

Chapter VI
Hello!
Equipment that is circulated fuel gas and dust are placed:

Outdoors but in compliance with the regulations in force regarding the design, execution and reception of electrical installations in potentially explosive environment.
Directly in the production halls only when the technological process requirements impose this solution and / or technological equipment they have in ventilation equipment fitted, in this case required construction of ventilation equipment meets the requirements imposed by the medium of the danger of fire and / or explosion .
In their rooms made of combustible elements required.

Ventilation access for people in power is as follows:
For rooms without release of dust, toxic gases or irritating
Direct from outside
From rooms with the same type of fire hazard
Of rooms available in the buffer ie when the central pressure ventilation is a category A or B fire hazard and the room with the other categories they communicate is when room is class A or B fire hazard and ventilation plant that communicate Another category is the danger of these situations incendiu.In buffer has room door 45 minutes fire resistant and equipped with automatic closing.
The buffer chambers when placed in pressure chambers communicate with the central ventilation with gas release toxic or irritating.

The doors open access to outside ventilation plant.
Ventilation power category A or B fire hazard fans are equipped with direct travel on axis electric motor driven fans or by direct coupling.

Warning: the installation of ventilation with a joining mobile joints are not used in areas with danger of fire.
Installations for the disposal of gas, smoke, and dust shall not be equipped with devices that serve masura.Instalatiile room with a fire and / or explosion will be equipped with stop signal in case of accidental fans.
Install the fan to respect the prescriptions of the rules and fire prevention regulations. Air ducts, special pieces of plastic confectioante are not used in rooms in categories A and B fire hazard.
Thermal insulation of air ducts made with materials that meet the following conditions:
To be non-combustible
Do not rot
To be rigid at high temperaturesIt does not emit pollutants at high temperatures
It does not emit sulfur at high temperatures

A wonderful day for all!

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