GEV FMG 1350, User Manual, Page: 14 / 104

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User manual
1.2 Effect of radon on the organism
Radon is an invisible gas that is formed inside earth crust and escapes naturally into the
air. For example, it can reach through different rock layers inside buildings by cracks in
floor slabs, as well as by pipes and windows in buildings. Permanently high concentrations
in the breathing air may be e.g. carcinogenic due to its radioactive decay products by alpha
radiation. Due to the low half-life of 3.82 days, radon components usually evaporate quickly
and effectively through proper ventilation.
Radon content in
the room air
Possible actions
0–49 Bq/m³ No action required.
49–99 Bq/m³ Try lowering the radon values by venting and sealing cracks.
100–299 Bq/m³ If these values persist for more than 3 months, contact a specia-
list for reducing the radon concentration.
300 Bq/m³ and higher If the values persist for more than 1 month, contact a specialist
for reducing the radon concentration.
1.3 Emergency measures in case of gas leakage
• Always observe your own safety.
• Hold your breath.
A cloth held in front of the mouth and nose does not protect and does not filter toxic
gases.
• Extinguish open flames including smokers.
• Breathe fresh air, eg. at the window.
• Provide fresh air by opening windows and doors.
Thus, the concentration of gas in the air is rapidly reduced.
• Turn off all gas sources.
• Rescue victims with symptoms of intoxication in the fresh air.
• Do not turn on or off electrical appliances, including telephones, doorbells and
the Radon detector.
• Close the main gas stopcock.
With LPG this is usually directly at the gas tank.
• Depending on the situation, call the gas supplier or the fire brigade: 112
1.4 Warning steps
DANGER
Warnings against hazards that will result directly in death or serious
injuries in case of non-observance.
WARNING
Warnings against hazards that may result in death or serious injuries
in case of nonobservance.
CAUTION
Warnings against hazards that may result in injuries in case of non-
observance.
NOTICE
Warnings against hazards that may result in material damage in case of
non-observance.
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