Barrier to Radioactive Contaminated Particles EN1073-2:2002
Part 2 – Requirements for non ventilated protective clothing against particulate radioactive contamination.
The test method used is the total inward leakage method defined in EN ISO 13982-2 Method B.
The test follows essentially the same protocols as the Type 5 test.
This test involves exposing a whole suit (6 or more test suits) to a dry aerosol of sodium chloride. The particle size is 0.6 μm. While being exposed to the dry aerosol, the wearer of the suit performs the following sequence of movements: standing, walking, squatting. The total inward leakage is expressed as a percentage of the concentration of sodium chloride outside the suit measured for each test suit at 3 points – knee, waist and chest. Therefor for each suit 9 measurements are taken and the 54 results averaged and consolidated as follows -
| Position | Knee | Waist | Chest | Average |
|---|---|---|---|---|
| Stand | TILE % | |||
| Walk | TILE % | |||
| Squat | TILE % | |||
| Average | TILA % |
The average readings are then used to determine the following -
Total Inward Leakage % - TILA %- average results all 6 wearers, all activities and all positions.
Total Inward Leakage % -TILE % - average inward leakage results all 6 wearers, all positions for one activity of standing, walking or squatting.
The highest mean value of Total Inward Leakage for one activity – highest TILE % and the TILA % are then used to determine the Nominal Protection Factor as defined in the table below.
Non-ventilated protective clothing shall be classified according to BS EN 1073-2:2002.
| Class | Mean value of the inward leakage of the three sampling positions inside the suit while standing, walking or squatting - 6 suits: 9 measurements recorded per suit. | Nominal Protection Factor | |
|---|---|---|---|
| One Activity TILE % | All Activities TILA % | ||
| 3 | < 0.3 | < 0.2 | 500 |
| 2 | < 3.0 | < 2.0 | 50 |
| 1 | < 30.0 | < 20.0 | 5 |
