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RADON (:fountain_pen: MEASUREMENT Usually in Kitchen & Living (Long…
RADON
:fountain_pen: MEASUREMENT
Usually in Kitchen & Living
Long-term
2 mn (in heating season)
Short-term
10 days
[gamma radiation]
:explode: BLD MATERIALS
Aerated concrete
Ballast concrete
Granite – Pegmatite
GROUND Rn level -->
normal radon conditions ->
Radon protecting
design
:check: SEAL pipes in
element against ground
:green_cross: LEAKS to the ground
Radon proof
design
:check: DENSE concrete slab
AIRTIGHT pipes
IN SITU concrete basement walls
Normal design
PRECAUTION
Rn Barrier
Polyethylene
Asphalt
Between layers under slab
On the ground
On top of slab
Radon extractor
1) Under pressure in ground (Drainage volume)
2) Exhaust channel (insulated)
3) Fan on roof
VENTILATION
:check: can remove Rn
(e.g. from bld element)
too much --> :explode: under pressure
--> Rn from ground increase
:explode:
Radioactive decay
Breathing
-->
Cancer
TAP WATER
:check: Aeration
Active carbon filtration
Reverse osmosis
Storage (13 days: -90%)