3. Determining your level of exposure

The second type of information to look for concerns the workplace. A step-by-step description of the process can be used to subdivide the various potentially-exposing tasks, and identify the areas where the "nano" risk lies, so that each situation can be dealt with on a case-by-case basis.

For each task, you need to find information on :

• Tool

  containment (size of premises, physical separation of workstations, etc.) and ventilation levels; use Table 2 "Containment index" in the Workstation Evaluation Tool (