SISOSCB008 — SCUBA dive using Enriched Air Nitrox

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What an assessment for SISOSCB008 must cover

35 assessable components: 4 elements (15 performance criteria), 4 performance evidence and 12 knowledge evidence requirements, plus 4 foundation skills. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Plan EANx dives.

1.1Determine site, depth and duration of dives.
1.2Identify hazards and assess risks associated with use of EANx equipment, blend, site, depth and duration of dives.
1.3Prepare EANx dive plans according to industry technical and safety criteria.
1.4Use dive computer or dive tables, as required, to plan requirements.
1.5Select and order EANx blend to meet dive requirements.

2 Analyse blend, select and assemble equipment.

2.1Analyse supplied EANx blend using equipment according to manufacturers’ calibration and analysis recommendations.
2.2Complete all required pre-dive analysis logs.
2.3Select and assemble dive equipment suitable for use with EANx gas blend.
2.4Utilise EANx compatible dive computers to finalise details of dive, according to industry technical and safety criteria.

3 Dive using EANx.

3.1Complete EANx dive according to dive plan and EANx industry technical and safety criteria.
3.2Monitor depth and time throughout dive, according to dive plan using dive computer data.
3.3Take remedial action to avoid hazards.

4 Disassemble and maintain equipment.

4.1Maintain positive pressure in cylinder to avoid entry of atmospheric air.
4.2Disassemble regulators and gauges according to industry technical and safety criteria.
4.3Complete basic post dive maintenance of equipment compatible with elevated oxygen mix according to industry technical and safety criteria.

Performance evidence

plan and complete two EANx SCUBA dives, each for different parameters
prior to each dive: - select a supplier and order a blend of EANx suitable for dive requirements - analyse and confirm blend requirements and complete required log documents - safely and accurately assemble all equipment in line with the particular requirements of EANx use
during each dive, use effective techniques to control: - entry and exit - buoyancy - underwater swimming - ascent and descent - buddy management
after each dive, disassemble equipment and complete basic maintenance tasks, at water’s edge, in line with elevated oxygen mix effects on equipment.

Knowledge evidence

compositions and recreational uses of: - standard air - Enriched Air Nitrox (EANx) within the range of 22% to 40% oxygen - EANx above 40% oxygen at a fundamental level of understanding
different terminology and abbreviations used to described enriched air and composition, e.g. Enriched Air Nitrox, EANx22, Enriched Air 22, Enriched Air Nitrox 22, Nitrox 22
primary benefits of using EANx, commonly used blends and benefits of different blends
how use of EANx of different composition affects, or has no particular effect on: - no stop limits (no decompression limits) - decompression illness (DCI) - narcosis
the primary medical hazard of central nervous system oxygen toxicity (CNS toxicity) associated with use of EANx when diving: - causes - prevention - signs and symptoms - first aid treatments
for Enriched Air Nitrox (EANx) cylinders: - why cylinders are dedicated for use with EANx, and hazards associated with mixing use of dedicated and standard compressed air cylinders - identifying features and their purpose including: - colours, colour bands, wording - visual inspection stickers (decals) - oxygen service standard stickers (decals) - contents stickers or tags - any unique markings required by local regulations
for obtaining EANx and equipment: - quality standards that apply to provision of EANx - quality standards that apply to servicing cylinders - how to choose a quality provider for renting, filling, and servicing cylinders and other equipment to avoid risks to divers
special usage, maintenance, service considerations and manufacturer’s recommendations that can apply to the use of EANx with other equipment: - regulators - buoyancy control devices (BCD) - submersible pressure gauges (SPG)
primary equipment related hazards associated with use of EANx and precautions taken to avoid risks: - fire and combustion when filling and analysing content of mixed gases - deterioration of equipment when exposed to high levels of oxygen
processes to personally analyse and log the EANx blend in filled cylinders before use: - how to calibrate an oxygen analyser between uses using manufacturer’s recommendations - how to use an oxygen analyser to determine the oxygen content using manufacturers’ recommendations - how to complete logs
how to use dive computers for use with EANx to: - determine no-decompression limits for single and repetitive dives - properly plan and execute a dive - determine PO2 and how to establish equivalent air depth mix - determine maximum operating depth (MOD)
the advantages of dive computers over dive tables when planning and completing dives.

Foundation skills

Oral communication skills: use clear and unambiguous verbal and non-verbal communications to make intent known.
Numeracy skills: interpret and calculate complex and changeable numerical data involving pressures, percentages and depths.
Teamwork skills: work in harmony with a buddy diver to complete safe dives.
Planning and organising skills: manage own timing to complete activities within planned timeframes.

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing SISOSCB008

What does an assessment tool for SISOSCB008 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for SISOSCB008 needs to address all 35 unit components: 4 elements with 15 performance criteria, 4 performance evidence requirements, 12 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for SISOSCB008?

Auditori pulls the current release of SISOSCB008 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for SISOSCB008 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing SISOSCB008 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of SISOSCB008, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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