Working level
In the context of exposure to Radon and Radon progeny, the historical unit for potential alpha energy concentration, defined as any combination of the short-lived progeny of 222Rn or 220Rn in air that will result in the emission of exactly 1.30 × 108 MeV m–3 of potential alpha energy, which is approximately equal to 2.08 × 10–5 J m–3.
(Adapted from ICRP Publication 126, 2014)
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from ICRP Publication 126, 2014
The historical unit for potential alpha energy concentration defined as any combination of the short-lived progeny of radon in 1 m3 of air that will result in the emission of 1.30 × 108 MeV m-3 of potential alpha energy which is approximately equal to 2.08 × 10-5 J m-3.
from ICRP Publication 115, 2010
Any combination of the short-lived progeny of radon in one litre of air that will result in the emission of 1.3 × 105 MeV of potential alpha energy. 1 WL = 2.08 × 10-5 J/m3