{"c":"49-9092.00","n":"Commercial Divers","d":"Work below surface of water, using surface-supplied air or scuba equipment to inspect, repair, remove, or install equipment and structures. May use a variety of power and hand tools, such as drills, sledgehammers, torches, and welding equipment. May conduct tests or experiments, rig explosives, or photograph structures or marine life.","g":"49","tasks":[{"t":"Take appropriate safety precautions, such as monitoring dive lengths and depths and registering with authorities before diving expeditions begin.","core":true,"id":13855,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Check and maintain diving equipment, such as helmets, masks, air tanks, harnesses, or gauges.","core":true,"id":13856,"r":63,"dt":"07/2015","src":"Incumbent"},{"t":"Communicate with workers on the surface while underwater, using signal lines or telephones.","core":true,"id":13854,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Descend into water with the aid of diver helpers, using scuba gear or diving suits.","core":true,"id":13857,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Obtain information about diving tasks and environmental conditions.","core":true,"id":13858,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Supervise or train other divers, including hobby divers.","core":true,"id":13871,"r":64,"dt":"07/2015","src":"Incumbent"},{"t":"Inspect the condition of underwater steel or wood structures.","core":true,"id":20809,"r":63,"dt":"07/2015","src":"Incumbent"},{"t":"Inspect and test docks, ships, buoyage systems, plant intakes or outflows, or underwater pipelines, cables, or sewers, using closed circuit television, still photography, and testing equipment.","core":true,"id":13859,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Repair ships, bridge foundations, or other structures below the water line, using caulk, bolts, and hand tools.","core":true,"id":13860,"r":64,"dt":"07/2015","src":"Incumbent"},{"t":"Recover objects by placing rigging around sunken objects, hooking rigging to crane lines, and operating winches, derricks, or cranes to raise objects.","core":true,"id":13862,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Operate underwater video, sonar, recording, or related equipment to investigate underwater structures or marine life.","core":true,"id":13866,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Take test samples or photographs to assess the condition of vessels or structures.","core":true,"id":13864,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Cut and weld steel, using underwater welding equipment, jigs, and supports.","core":true,"id":13861,"r":64,"dt":"07/2015","src":"Incumbent"},{"t":"Install, inspect, clean, or repair piping or valves.","core":true,"id":13865,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Carry out non-destructive testing, such as tests for cracks on the legs of oil rigs at sea.","core":true,"id":13872,"r":64,"dt":"07/2015","src":"Incumbent"},{"t":"Install pilings or footings for piers or bridges.","core":true,"id":13863,"r":64,"dt":"07/2015","src":"Incumbent"},{"t":"Salvage wrecked ships or their cargo, using pneumatic power velocity and hydraulic tools and explosive charges, when necessary.","core":true,"id":13868,"r":62,"dt":"07/2015","src":"Incumbent"},{"t":"Remove obstructions from strainers or marine railway or launching ways, using pneumatic or power hand tools.","core":true,"id":13867,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Set or guide placement of pilings or sandbags to provide support for structures, such as docks, bridges, cofferdams, or platforms.","core":true,"id":13869,"r":64,"dt":"07/2015","src":"Incumbent"},{"t":"Perform activities related to underwater search and rescue, salvage, recovery, or cleanup operations.","core":true,"id":13870,"r":65,"dt":"07/2015","src":"Incumbent"},{"t":"Perform offshore oil or gas exploration or extraction duties, such as conducting underwater surveys or repairing and maintaining drilling rigs or platforms.","core":false,"id":13875,"r":63,"dt":"07/2015","src":"Incumbent"},{"t":"Drill holes in rock and rig explosives for underwater demolitions.","core":false,"id":13873,"r":64,"dt":"07/2015","src":"Incumbent"},{"t":"Remove rubbish or pollution from the sea.","core":false,"id":13874,"r":64,"dt":"07/2015","src":"Incumbent"}]}