List the disadvantages and advantages of installing the Local Exhaust Ventilation system at a workplace.
Illustrate out the term "Air changes" employed in measuring the dilution ventilation rate.
Compute the volume flow rate which would be required to ventilate a hall where an international conference is being held with the following dimensions: 18 m long, 20 m wide and 5 m high. Select the suggested number of air changes for your calculations.
Illustrate out the significance of having good lighting at a workplace.
Discuss on the factors which should be taken in consideration prior to the employ of respiratory protective equipment by employees when exposed to dusts, chemicals or diminished oxygen.
In brief illustrate out what is meant by Nominal Protection Factor.