WIKA GDM-100 Manual De Instrucciones página 10

3. Safety
Danger of suffocation caused by insulating gases and gas mixtures
High concentrations of gases can lead to asphyxiation, since breathable air is displaced
from the lungs with the inhalation of gas.
Since SF₆ gas is heavier than air, it collects, especially, at ground level or lower-lying
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rooms below the reference level (e.g. cellars). This is particularly dangerous since SF6
gas is colourless and odourless and thus may be imperceptible to people.
3.8 Danger caused by decomposition products
Insulating gas in electrical systems may contain decomposition products generated by
electric arcs:
Gaseous sulphur fluorides
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Sulphur hexafluorides
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Solid and atomized metal fluorides, metal sulphides, metal oxides
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Hydrogen fluoride
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Sulphur dioxide
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Decomposition products can be harmful to health.
They can cause poisoning by inhalation, ingestion or contact with the skin.
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They may be irritating to the eyes, the respiratory system or the skin and burn them.
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Inhalation of large quantities may damage the lungs.
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Observe the following safety instructions in order to avoid danger from insulating gas:
Wear personal protective equipment.
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Read the material safety data sheet of the gas supplier.
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With large leakage, evacuate the area quickly.
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Ensure good ventilation.
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Ensure the leak tightness of the equipment with a leak detector (e.g. model GIR-10).
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3.9 Applicable standards and directives for installation, assembly,
commissioning:
BGI 753 (SF₆ plants and equipment in Germany)
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IEC 61634 (Handling of SF₆ gas)
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IEC 60376 (New SF₆ gas, technical grade SF₆ gas)
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IEC 60480 (Used SF₆ gas)
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CIGRE report 276, 2005 (Practical SF₆ gas handling instructions)
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Leakages during operation:
IEC 60376 (New SF₆ gas, technical grade SF₆ gas)
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IEC 60480 (Used SF₆ gas)
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CIGRE 2002 ("SF₆ gas in the electrical industry")
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SF is a colourless and odourless, chemically neutral, inert and
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non-flammable gas which is approx. five times heavier than air, non-toxic
and not harmful to the ozone layer.
Detailed information is given in IEC 60376 and IEC 61634.
WIKA operating instructions gas density monitor model GDM-100