Risk Of Explosion When Using A Forming Gas With Incorrect Mixing Ratio. Risk Of Suffocation Due To Inhalation Of Forming Gas. Risk Of Injury Due To Bursting Of High-Pressure Hoses - AS83.00-Z-0001-02A

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Wear safety glasses and protective gloves. No smoking or open flames. Work in well-ventilated rooms only.

General information

Forming gas is used when searching for leaks on vehicle A/C systems. Observe correct mixing ratio of 95 % nitrogen and 5 % hydrogen.

Concentration levels with more than 5 % hydrogen are explosive and may not be used for leak tests.

Risk of explosion

Forming gas with a hydrogen content of more than 5 % is extremely combustible and in combination with air it can form an explosive mixture.

Risk of injury

There is a risk of injury when working on pressurized parts.

Risk of suffocation

A high concentration level of forming gas can cause suffocation.

Safety precautions and rules of conduct

Ensure sufficient ventilation.
Never directly inhale forming gas.
Perform visual inspection of valves and lines prior to usage.
Wear safety glasses and protective gloves when working with forming gas.
Open valves slowly to avoid pressure surges. The reservoir pressure of the forming gas is 200 bar.
Make sure that the valve on the gas cylinder is closed after each use of the leak tester.
The gas shutoff valve must always be closed during internal transport of gas cylinders.
Always transport gas cylinder in designated cylinder trolley in upright position and with valve protection cap fitted.
The pressure reducing valve must always be freely accessible during operation. It may not be used as a tray for hoses or any other tools.
Never repair valves or safety pressure relief devices on the leak tester or tank yourself.

First-aid measures

Inhalation: After inhaling a high concentration level of forming gas, the affected person should be taken out of enclosed premises straight away, and kept calm and warm.

If unconscious: Position and transport in recovery position. Consult a physician.

If breathing is arrested: Perform artificial respiration.