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Elements and Performance Criteria

1. Plan EANx dives.
   • Determine site, depth and duration of dives.
   • Identify hazards and assess risks associated with use of EANx equipment, blend, site, depth and duration of dives.
   • Prepare EANx dive plans according to industry technical and safety criteria.
   • Use dive computer or dive tables, as required, to plan requirements.
   • Select and order EANx blend to meet dive requirements.
2. Analyse blend, select and assemble equipment.
   • Analyse supplied EANx blend using equipment according to manufacturers' calibration and analysis recommendations.
   • Complete all required pre-dive analysis logs.
   • Select and assemble dive equipment suitable for use with EANx gas blend.
   • Utilise EANx compatible dive computers to finalise details of dive, according to industry technical and safety criteria.
3. Dive using EANx.
   • Complete EANx dive according to dive plan and EANx industry technical and safety criteria.
   • Monitor depth and time throughout dive, according to dive plan using dive computer data.
   • Take remedial action to avoid hazards.
4. Disassemble and maintain equipment.
   • Maintain positive pressure in cylinder to avoid entry of atmospheric air.
   • Disassemble regulators and gauges according to industry technical and safety criteria.
   • Complete basic post dive maintenance of equipment compatible with elevated oxygen mix according to industry technical and safety criteria.
   • Determine site, depth and duration of dives.
   • Identify hazards and assess risks associated with use of EANx equipment, blend, site, depth and duration of dives.
   • Prepare EANx dive plans according to industry technical and safety criteria.
   • Use dive computer or dive tables, as required, to plan requirements.
   • Select and order EANx blend to meet dive requirements.