Task No. 26.1
Task: Electric arc welding practice
Sub Task: Identify tools and apparel
used for arc welding.
Aims:
1. What are the tools
used for arc welding identify them.
2. What are the
apparels used for arc welding.
Requirement for performing the task:
1. Reference theory from MEK text book.
2. Welding machine, electrode holder, earth clam and cables
3. Apparels such as
1. Leather apron
2. Leather hand gloves
3. Safety shoes
4. Welding shield
Precaution
to be observed:
1. Wear proper PPE
2. Surface should be free from oil and grease.
3. Shoelace should be properly tight.
4. Should not wear loose clothing.
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Task No. 26.2
Task: Electric arc welding practice
Sub Task: Identify hazards and demonstrate the safety precaution to be observed
Prior commencement and during arc welding.
Aims:
1. What are the welding hazards?
2. What safety precaution to be followed during arc welding and before starting arc welding.
Requirement for performing the task:
1. Referencetheory from MEK text book.
2. All PPE such as welding apron, face shield, etc.
Precaution
to be observed:
1. Wear proper PPE
2. Surface should be free from oil and grease.
3. There should not be any flammable material.
4. Welding should not be carried out on wooden surface.
5. No combustible material should be present.
6. Firefighting equipment should be available in welding area.
7. Welding area should have
well ventilation
8. Electrical part should
not touch by naked hand.
9. Welding should not carry out on wet surface.
10. Use face shield with proper filter.
WELDING HAZARDS:
1. Electric Shock
2. Noise Hazards
3. Exposure to UV and IR Radiation
4. Exposure to Fumes and Gases
5. Burns
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Task No. 26.3
Task: Electric arc welding practice
Sub Task: Prepare two plates for joining by arc welding in simplest way (Single butt)
Aims:
1. How to prepare two plates for butt joint by arc welding.
2. What are the types of welding joints?
Requirement for performing the task:
1. Reference theory from MEK text book.
2. Metal peace
3. Welding machine, electrode, etc.
Precaution
to be observed:
1. Wear proper PPE
2. Select the electrode according to the metal thickness.
3. Make sure there should not be any combustible material present.
4. Fire fighting extinguisher should be present.