Table 3.
Test results of Radon (Rn-222) concentration of WML board
Items
Max. Rn concentration (Bq/m
3
)
Avg. Rn concentration for 7days (Bq/m
3
)
Radon concentration per unit mass (Bq/(kg•h))
Radon concentration per unit area (Bq/(m
2
•h))
3-layer WML
21.3
12.9
0.008
0.019
Criterion
-
Below 148
-
-