General safety notes
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HDK-CNG_EN_03_2016
General safety notes
Working with natural gas
Natural gas is explosive and toxic. Working with natural gas constitutes a
substantial source of hazards to people and the environment.
The operator must adopt appropriate safety precautions in respect of
these potential hazards. Whenever you are working with the dryer, always
follow the safety instructions relating to the handling of natural gas.
Flush the system before commissioning, decommissioning and
maintenance!
The operator must consider these risks and take the necessary safety
measures. When working with the natural gas system, always adhere to
the safety instructions for the handling of natural gas.
In the event of an earthquake
An earthquake can cause pipelines to develop leaks, enabling natural gas to
escape. In the event of an earthquake, immediately
► cut off the supply of gas,
► flush the dryer with inert gas,
► ventilate the room thoroughly,
► check dryer and pipework for leaks, and repair them all.
In the event of an escape of natural gas
► Natural gas is toxic and explosive. In the event of an escape of natural gas,
immediately
► put on a protective mask,
► ventilate the room thoroughly and
► stop the gas from escaping immediately.
Personnel qualification
Only authorised and approved specialist personnel (e.g. in acc. with DVGW) may
be tasked with the work on the dryer described in these operating instructions.
Notes on critical gases
All explosive, combustible and toxic gases in Fluid Groups 1 as defined in the
Pressure Equipment Directive are designated as 'critical gases'.
The release of a critical gas can lead to substantial hazards for people and the
environment and must therefore be avoided at all times.
—
The operator must install appropriate safety precautions.
—
Prior to all work that could lead to a release of critical gases, flush the
affected section of pipework including the dryer and filter with an inert gas.
Then depressurise the dryer and carry out the work.
