Earning Criteria

• This person has successfully demonstrated all of the knowledge and practical competencies required to achieve the Basic Ducting Fabrication.
• They can use different types and applications of lifting aids and accessories. Lifting aids: block and tackle, pull lifts, rope, wire and chain slings, lifting clamps and dogs, eyebolts and shackles, jacks, trestles and stands. Dangers of using faulty/misusing lifting aids and techniques. Dangers: knots in slings, damaged slings, loads with sharp corners, loose and swinging loads, wrapped and greased loads, handling materials under adverse conditions.
• They can use drill types and state their applications. Drill types: parallel shank (ie jobber, long series, stub), morse taper shank, drills with more than two flutes, special purpose drills (ie countersinking, counter boring, taper drilling, drills with integral lubricant/cooling feeds). Working principles of drills. Types of reamers and their applications. Process of reaming a hole using vertical spindle machines. Methods of cutting internal and external screw threads.