Chlorine Rooms - Grundfos Vaccuperm VGA-111 Installations- Und Bedienungsanleitungen

1.6 Chlorine rooms

Chlorine rooms are rooms, where a chlorine gas dosing system
and/or chlorine containers are located. The chlorine in these
rooms is under pressure.
1.6.1 Regulations for chlorine rooms
According to the German regulations for accident prevention
"Chlorination of water", such rooms have to meet the following
requirements:
• They should not have connections to other rooms, and must
be separated gas-tight and fire-resistant.
• They must be at ground level, dry and air-conditioned. The
recommended room temperature is 18-20 °C. It should be
neither lower than 0 °C nor higher than 50 °C.
• Overpressure lines of dosing equipment must not end in the
open air.
• Ventilation openings leading into the open air must be limited
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to 2 x 20 cm .
• Appropriate exhaust devices with downstream absorption
systems must be installed.
• Chlorine gas must not get into lower-lying rooms, shafts, pits,
canals or aspirating holes of ventilation systems.
• Chlorine rooms must be equipped with a water sprinkling
system to precipitate the escaping chlorine gas.
– The sprinkling system must have a run-off with air trap.
– Operation must be possible manually from outside the
chlorine rooms.
• A chlorine gas warning system must be installed
– with optical and acoustical alarm device,
– with connection to the water sprinkling system,
– with a warning system that reactivates automatically after
switch-off (e.g. for container exchange).
• The floor of a chlorine room must be even, the exit not below
ground level and not higher than a possible loading ramp.
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• Requirements of chlorine rooms
• Chlorine rooms must have a direct exit to the open air.
• Doors must be lockable, open outwards, and it must be
possible to open the doors without a key from inside the room.
• Chlorine rooms must not be dedicated for the permanent stay
of people.
• Eating, drinking, or storing food in chlorine rooms is
prohibited.
1.6.2 Labelling of chlorine rooms
In Germany, according to DIN 4844, the following warning signs
must be installed outside the entrance of a chlorine room:
Fig. 3
Inside a chlorine room, the mandatory sign "Use the gas mask"
and the "Instruction sheet for first aid in case of chlorine gas
intoxications" must be installed.
Fig. 4
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Warning sign and supplementary sign "Chlorination
plant: Access only for instructed persons"
Mandatory sign (DIN 4844)
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