select coalesce((select id from courses where languageNo=0 and id in (select id from courses where languageParentNo=417 and active<100) and orgNo=1), (select id from courses where (id=417 or parentNo=-417 and active<100 and orgNo=1)), 417)

DAN Assurance of Breathing Gas Quality

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Course DescriptionLevel: Student

The DAN Assurance of Breathing Gas Quality e-learning course is designed to help compressor operators identify, prevent and respond to gas contamination incidents. With this training, your staff will be prepared to prevent injuries and accidents that result from contaminated breathing air and properly respond to these issues if they occur despite the best efforts to prevent them. Completing this course not only improves a fill station operator's capabilities but illustrates their commitment to safety.

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Course Materials

Potential Sources of Contamination

Potential sources of carbon monoxide (CO) and carbon dioxide (CO2) contamination in scuba breathing gas (air and mixture)

Identifying Gas Contamination

Identifying gas contamination in scuba breathing gas (air and mixtures)

Gas Contamination

Spring 2014 Alert Diver article "Preventing Breathing Gas Contamination"

Air Quality Standards

Here is a list of common scuba air quality standards used in the industry.

Carbon Monoxide Safety

The rationale behind the set carbon monoxide contaminant limit for acceptable scuba air quality is explained.

Carbon Dioxide Safe Limits

The rationale behind set carbon dioxide contaminant limits for acceptable scuba air quality is explained.

Oil and Particulates

The rationale behind the set contaminant limits for oil and particulates is explained.

Common Symptoms

Common symptoms of gas contamination in scuba breathing gas (air and mixtures)

Emergency Action Plan (EAP)

This form can be used to generate your own emergency action plan. Please open this file in Acrobat for it to work properly.

Air Quality Testing Form (Imperial units)

This form can be used as your own checklist for Air Quality Testing your cylinder filling station.

Air Quality Testing Form (Metric units)

This form can be used as your own checklist for Air Quality Testing your cylinder filling station.

Filling Station Risk Assessment

This form can be used as a checklist to assess the risks in and around your filling station.

Historical Course Records