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The Range Statement relates to the Unit of Competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording in the Performance Criteria is detailed below. |
Decompression tables may include | Defence Civil Institute of Environmental Medicine |
Equipment may include | Breathing system and devices:cylinderconfigurationdemandindependent primarypressurepositivesinglesupplyBuoyancy devices:buoyancy compensatorweight beltDive clothing:finsgloveswet-suit (includes booties and hood)Diving accessory equipment:communications slatecompassface mask/mouthpiece ensembleknifewatchSafety equipment:diver's safety lines |
Entry to the water may include | DiveForward/backward jumpRoll-backWalk-in (backwards) |
Platforms may include | BoatsSemi-permanent platformsShips |
Decompression techniques may include | Lazy-shot and drifting stopsLazy-shot and fixed shot ropeLazy-shot and float lineLazy shot and life lineSurface |
Surface and sub-surface hazards may include | Anchor drop zonesCathodic protection devicesElectrical cablingInlets and sonar/radio frequency hazardsMarine animalsPiers and jettiesPipelinesPollutantsPropellers/thrustersTrapping hazards: beamsculvertsgatesgrottoes and cavesintakes and out-fallsnetssafety, anchor and communications linessluicessewerssubmerged ships, vehicles and structuresVessel rocking and associated movement |
Signs and symptoms of diving induced medical problems may include | Disablement through painIncoherenceLoss of task focusReduction in breathing/bubblesUnconsciousnessVomiting |
Medical problems may include | Compression related problems including:barotrauma (such as equalisation problems with aural/sinus canals)narcosisoxygen toxicityDecompression related problems including:anoxia and hypoxiabarotraumas such as:squeeze (face, body, and lung)dentalauralsinusesgastro-intestinalpulmonary (interstitial emphysema, pneumothorax, tension pneumothorax, mediastinal emphysema, subcutaneous emphysema, and arterial gas embolism)carbon dioxide retentioncarbon dioxide and carbon monoxide poisoning decompression illnessprimary and secondary drowningHeat and cold related problems including:heatstrokehypothermia |
Individual contingencies/ emergencies may include | Blockage to mouthpiecesBuoyancy device malfunctionCommunication device malfunctionComplete breathing system malfunctionEntrapmentFlooding of maskLoss of spatial awarenessPartial breathing system malfunctionSevered safety lines |
Group contingencies/ emergencies may include | Injured buddyLost buddyUnconscious buddy |
Buoyancy includes | Positive NegativeNeutral |
Diving descent and ascent techniques include | BreathingBuoyancy maintenanceEqualisationMaintaining situational and positional awareness throughout the diveMonitoring equipment and gaugesPropulsionSurfacing |
Relevant factors may include | AirDepthEquipmentLocationOther diversTime |
Threats may be posed by | PollutionWeedOther debris |
Effects of open water environment includes | CurrentsSwellsWave action |
Ensuring recovery may include | Employing rendezvous proceduresSurfacing |
Ensuring safe surfacing must include | Checking for the sounds of propellers before committing to breaching the surfaceAdvancing the arm above the head for protection and signalling, and once surfaced, gaining 360 degree awareness |
Electronic communications device may include | Topside/surfaceSub-surface divers systems:hard wirethrough water voice |
Accessories may include | AntennaEar setMicrophone |
Radio telephone procedures may include | Call-signsPhonetic alphabetPro-wordsRelaying messagesWords twice procedures |
Dangerous items may include | Explosives |
Assisting other divers includes | Physically recovering a diver to the surface using the 'companion diver' drill (including unconscious companion)Searching for a lost buddySharing air supply through buddy breathing |
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