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143
shielding gases, incomplete combustion, occupational exposure limit, to
cause harm to a person's health.
Speaking
True or false?
1. The smaller the particles the more harmful the fume is.
2. The risk to the welder's health from fume or gases depends on the welding
arc.
3. Welders have lung cancer more often than the general population.
4. Asphyxiation may happen due to inadequate ventilation.
5. Metal fume fever is an incurable illness.
Fill in the gaps in the following sentences or complete them:
1. Argon is a … gas.
2. Particulate fume is very … for man’s health.
3. When exposed to particulate fume of high concentration for a long time, a
welder may … .
4. Welding galvanised steel may cause … .
5. Asphyxiation may happen due to … .
6. To minimise the risk, special attention should be paid to controlling fumes
which may contain chromium or … compounds.
7. In case of metal fume fever, …. recovery occurs soon after removal of the
welder from the exposure.
8. … is a disease caused by fluid on the lungs.
9. MEL means maximum … limit.
10. OES is … exposure standard.
11. Gases encountered in welding are … .
Answer the following questions:
1. What is the difference between welding fume and welding gas?
2. What does the major part of the particulate fume arise from?
3. What does the degree of risk to the welder's health from fume or gases
depend on?
4. Under what condition is control over the exposure of welders to hazardous
fumes or gases considered adequate?
5. Do the COSHH Regulations state only single substances?
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