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Underwater Arc Welding

Welding Technology · Level 6  ·  8 Chapters

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Chapters

1
Conduct underwater welding site assessment and dive planning
8 topics
No Notes Yet
2
Set up diving support systems
10 topics
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3
Set up underwater arc welding equipment and materials
8 topics
No Notes Yet
4
Carry out underwater arc welding
10 topics
No Notes Yet
5
Carry out underwater cutting operations
9 topics
No Notes Yet
6
Inspect and test underwater welds
9 topics
No Notes Yet
7
Maintain underwater welding equipment
8 topics
No Notes Yet
8
Respond to underwater welding emergencies
9 topics
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What Underwater Arc Welding covers: 71 main topics in 8 chapters

1. Conduct underwater welding site assessment and dive planning

  1. 1.1 Observation of health and safety in underwater operations as per OSHA
  2. 1.2 Interpretation of working drawings as per 2553
  3. 1.3 Identification of underwater workplace hazards
  4. 1.4 Assessment of depth, visibility and water current
  5. 1.5 Environmental assessment procedures
  6. 1.6 Risk assessment procedures
  7. 1.7 Dive planning procedures
  8. 1.8 Pre-dive briefing procedures

2. Set up diving support systems

  1. 2.1 Observation of health and safety in diving operations
  2. 2.2 Diving support systems
  3. 2.3 Diving helmet components
  4. 2.4 Breathing gas supply systems
  5. 2.5 Underwater communication systems
  6. 2.6 Umbilical systems
  7. 2.7 Pressure gauges
  8. 2.8 Inspection of diving equipment
  9. 2.9 Testing of communication systems
  10. 2.10 Testing of breathing systems

3. Set up underwater arc welding equipment and materials

  1. 3.1 Observation of health and safety in underwater welding
  2. 3.2 Interpretation of working drawings as per job requirements
  3. 3.3 Selection of materials, tools and equipment
  4. 3.4 Joint preparation techniques
  5. 3.5 Surface preparation techniques using water-based degreasers
  6. 3.6 Underwater welding equipment and accessories
  7. 3.7 Equipment setup procedures
  8. 3.8 Welding parameter setting

4. Carry out underwater arc welding

  1. 4.1 Underwater arc welding principles
  2. 4.2 Underwater arc welding equipment and accessories
  3. 4.3 Underwater welding specifications
  4. 4.4 Underwater communication during welding
  5. 4.5 Pressure monitoring procedures
  6. 4.6 Underwater welding techniques
  7. 4.7 Factors affecting weld quality
  8. 4.8 Welding defects, causes and remedies
  9. 4.9 Underwater welding of mild steel (ISO 15618)
  10. 4.10 Workplace housekeeping

5. Carry out underwater cutting operations

  1. 5.1 Observation of health and safety in underwater cutting
  2. 5.2 Underwater cutting equipment and accessories
  3. 5.3 Cutting consumables
  4. 5.4 Underwater cutting principles
  5. 5.5 Underwater cutting techniques
  6. 5.6 Factors affecting cut quality
  7. 5.7 Cutting defects, causes and remedies
  8. 5.8 Inspection of cut surfaces
  9. 5.9 Workplace housekeeping

6. Inspect and test underwater welds

  1. 6.1 Visual inspection procedures
  2. 6.2 Dimensional inspection procedures
  3. 6.3 Weld measurement techniques
  4. 6.4 Non-destructive testing principles
  5. 6.5 Ultrasonic testing procedures
  6. 6.6 Magnetic particle testing procedures
  7. 6.7 Weld acceptance criteria (ISO 5817, ISO 15618)
  8. 6.8 ISO weld inspection standards
  9. 6.9 Inspection reporting procedures

7. Maintain underwater welding equipment

  1. 7.1 Equipment inspection procedures
  2. 7.2 Fault diagnosis techniques
  3. 7.3 Preventive maintenance procedures
  4. 7.4 Corrective maintenance procedures
  5. 7.5 Cable inspection procedures
  6. 7.6 Electrode holder maintenance
  7. 7.7 Waterproof sealing inspection
  8. 7.8 Storage of tools and equipment

8. Respond to underwater welding emergencies

  1. 8.1 Identification of emergency situations
  2. 8.2 Underwater rescue procedures
  3. 8.3 Emergency ascent procedures
  4. 8.4 Decompression procedures
  5. 8.5 First aid procedures
  6. 8.6 CPR procedures
  7. 8.7 Oxygen administration procedures
  8. 8.8 Incident reporting procedures
  9. 8.9 Post-emergency housekeeping

Revise this unit

Exam-style questions Written to CDACC standard, with answers Test yourself Multiple-choice, one at a time Practise questions Quick recall — check you know the facts
3 more for this unit
Oral exam preparation What the assessor asks, and how to answer out loud Worked calculations Step-by-step maths with the common mistakes Quick cards Myth busters, skill tips and scenarios

Beyond the syllabus

Decision simulator On site, what would you do? Workplace scenarios Real site situations — what would you do? Turn this into income Where this skill earns — what to charge, how to find clients

Other units in Module VI