Table III.
Allowable monitor units per week for floor below.
| Lead (mm) | Concrete (mm) | Noncontrolled | ||||
|---|---|---|---|---|---|---|
| Distance to occupied area (meters) | ||||||
| 1 | 2 | 3 | 4 | 5 | ||
| 0 | 0 | 70 | 300 | 600 | 1000 | 1600 |
| 5 | 25 | 90 | 400 | 800 | 1400 | 2100 |
| 10 | 50 | 120 | 500 | 1000 | 1800 | 2800 |
| 15 | 75 | 150 | 600 | 1400 | 2400 | 3700 |
| 20 | 100 | 200 | 800 | 1800 | 3200 | 5000 |
| 25 | 125 | 300 | 1100 | 2400 | 4200 | 6500 |
| 1000 MU/min | ||||||
|---|---|---|---|---|---|---|
| Lead (mm) | Concrete (mm) | Controlled | ||||
| Distance to occupied area (meters) | ||||||
| 1 | 2 | 3 | 4 | 5 | ||
| 0 | 0 | 3 200 | 13 000 | 29 000 | 52 000 | 81 000 |
| 5 | 25 | 4 300 | 17 000 | 38 000 | 69 000 | 110 000 |
| 10 | 50 | 5 600 | 23 000 | 51 000 | 90 000 | 140 000 |
| 15 | 75 | 7 500 | 30 000 | 67 000 | 120 000 | 190 000 |
| 20 | 100 | 10 000 | 40 000 | 89 000 | 160 000 | 250 000 |
| 25 | 125 | 13 000 | 52 000 | 120 000 | 210 000 | 330 000 |
| 1000 MU/min | ||||||