Table 1.

Workload limits in Gy/week for the non‐controlled adjoining areas on the same floor. Various thickness of lead in the walls can be used.

Same Floor		Distance to Non‐controlled Occupied Area (cm)
Lead (mm)	200	300	400	500	600
0	20	40	80	120	170
3	30	60	110	170	240
6	40	90	150	240	340
10	50	100	180	280	410