Profession construction commercial diver
Commercial divers work below the surface of the water to install equipment, such as hydraulic structures, waterways and marine facilities. They also inspect, remove and repair the structures.
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- Realistic / Investigative
- Diving equipment
Equipment used for a dive, including wetsuits and drysuits, helmets, scuba equipment and any umbilical equipment which provides the connection with the surface.
- Diving operation requirements
The operational plan and the contingency plan for the diving operation, the diving equipment to be used in the diving operation, the diving signals to be used in the diving operation, the in-water decompression procedures to be used in the diving operation, and any emergency procedures that might have to be used in the diving operation.
- Comply with legal requirements for diving operations
Ensure that diving operations comply with legal requirements.
- Cope with decompression
Ascend from a dive in stages or slowly according to a decompression plan in order to give the body time to adapt to the lowered pressure. Prevent the buildup of dissolved gases in living tissue, as well as other symptoms linked to rapid ascent, collectively known as decompression sickness or "the bends".
- Weld underwater
Use underwater arc welding equipment to make welds beneath the water surface. Protect yourself from electric shocks by shielding the weld from the water.
- Interrupt diving operations when necessary
Terminate or interrupt the diving operation if you judge that continuing the operation is likely to endanger the health or safety of any person involved.
- Comply with the planned time for the depth of the dive
Ensure that a diver returns from a given depth after the planned time limit has expired.
- Use lift bags
Use bags filled with air to help carry objects underwater, or send them to the surface. Choose the right capacity lift bag for the object to be carried and attach it securely to the object. If multiple bags are used, make sure the lifting capacity is distributed evenly.
- Check diving equipment
Check diving equipment for valid certification to ensure its suitability. Ensure that any diving equipment is examined by a competent person before use, at least once on each day on which it is to be used. Ensure that it is adequately tested and repaired.
- Use safety equipment in construction
Use elements of protective clothing such as steel-tipped shoes, and gear such as protective goggles, in order to minimise risk of accidents in construction and to mitigate any injury if an accident does occur.
- Weld in hyperbaric conditions
Use arc welding techniques to make welds in conditions of very high pressure, usually in an underwater dry chamber such as a diving bell. Compensate for the negative consequences of high pressure on a weld, such as the shorter and less steady welding arc.
- Work ergonomically
Apply ergonomy principles in the organisation of the workplace while manually handling equipment and materials.
- Follow health and safety procedures in construction
Apply the relevant health and safety procedures in construction in order to prevent accidents, pollution and other risks.
- Keep records of work progress
Maintain records of the progress of the work including time, defects, malfunctions, etc.
- Implement dive plans
Implement dive plans, working with the client, vessel teams and marine superintendents.
- Use rigging equipment
Set up rolling and lifting equipment required to lift and move objects e.g. with a crane or block and tackle system.
- Inspect construction supplies
Check construction supplies for damage, moisture, loss or other problems before using the material.
- Maintain diving equipment
Perform maintenance actions, including small repairs, on diving equipment.
Optional knowledge and skillskeep personal administration insert charges into drill holes dive with scuba equipment operate drilling equipment inspect offshore constructions cut metal products ensure health and safety of dive teams work in underwater chamber dispose of sewage sludge inspect pipelines process incoming construction supplies operate hand drill diving vessels systems perform underwater bridge inspection use wrenches ensure diving operations conform with plan critique the dive with the dive team manage explosives in accordance with legislation work in a construction team recognise signs of corrosion install metal gas piping display warnings around dive site repair pipelines inspect concrete structures pour concrete underwater examine prospective blast area
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