Observation

Most of the candidates were able to provide the right responses to 2 (a) and (b) but could not give correct responses to 2 (c). The required responses are as follows.

2(a)      (i)         Movement of cylinder

• Fit suitable protection valve caps and lever to cylinders when transporting.
• Securely stow gas cylinders to protect them from moving or falling
• Do not let cylinder project beyond the side or end of fork lift trucks.
• Disconnect regulators and hose  from cylinders
• Ensure gas cylinder are clearly marked to show their content
• Cylinder should be stored in a well ventilated area.
• Keep full and empty cylinder away from each other.

(ii)        Storage precautions for cylinders

• Store gas cylinders in a dry, safe, flat, open space.
• Store cylinders where they are not vulnerable to hazards as a result of impact.
• Gas cylinder containing flammable gas should not be stored in part of a building used for other purposes.
• Protect cylinders from external heat sources that may adversely affect their mechanical integrity.
• Secure the cylinder in a vertical position.

 (b)       (i)        Pipe jointing is the process of connecting pipes that ensures tight sealing   
and straightness.

OR      Pipe Joining is a means of joining one or more pipes together by using a fitting or welded joints.

(c)        Factors to be considered in selecting pipe jointing method are

• type of pipe (the material i.e. mild steel, pvc, copper, etc);
• type of joint to be made;
• the service environment (where it will be used);
• Comparative cost.