Question 1
(a) State three safety precautions to be observed in the use of oxy-acetylene equipment.
(b) (i) What is a gangway?
(ii) State two reasons for creating gangways in a workshop.
(c) Sketch each of the following welding symbols:
(i) fillet;
(ii) edge weld;
(iii) single ‘v’ butt.
Observation
Most of the candidates who attempted this question responded correctly. However, some candidates stated the general workshop safety precautions instead of precautions associated with oxy-acetylene. Also, many candidates could not state reasons for creating gangways (b) (ii). The required responses to these parts of the question are given below.
1 (a) Safety precautions to be observed in the use of oxy-acetylene equipment.
- Do not leave a lighted torch unattended to.
- Test gas leakages with soapy water and not with naked flame.
- Do not roll cylinders on the floor, use trolley.
- Do not weld near inflammable materials.
- Do not allow oil or grease to have contact with cylinder connections.
(b) (ii) - Gang ways are created so that workers can move without accident;
- It enables materials to be carried in and out without hindrance;
- It also allows people to run for safety in case of emergency without
hindrance;
- Machines and equipment too can be moved conveniently.