Silica Dust VR Training: Cutting, Water Suppression and RPE (COSHH 2002)
VR silica dust scenario on COSHH 2002: cutting blocks, kerbs and slabs with water suppression or extraction, RPE fit, face fit testing and cleaning without dry sweeping.
QUICK ANSWER
COSHH 2002 requires employers to assess and prevent or adequately control exposure to hazardous substances, including respirable crystalline silica, which has a workplace exposure limit of 0.1 mg/m3 over 8 hours. A VR scenario shows cutters the dust cloud they cannot see and the controls that bring it down.
What the Rule Requires
Control of Substances Hazardous to Health Regulations 2002 (SI 2002/2677): employers must assess the risk from hazardous substances (regulation 6), prevent or adequately control exposure (regulation 7), maintain and test control measures (regulation 9) and provide information, instruction and training (regulation 12). Respirable crystalline silica has a workplace exposure limit of 0.1 mg/m3 as an 8-hour time-weighted average in HSE EH40.
The scenario is a kerb laying gang cutting concrete kerbs with a petrol saw. The water bottle is empty, one cutter wears a disposable mask that has not been face fit tested, and the dust is being swept up dry at the end of the day.
Hazards in This Scenario
- Lung disease from respirable crystalline silica
- Dust that is invisible at harmful levels
- Poorly fitted RPE
- Dry sweeping
The Procedure the Scenario Rehearses
- Use water suppression or on-tool extraction
- Check the water supply before cutting
- Wear RPE that has been face fit tested
- Position yourself upwind and away from others
- Clean up by vacuum or wet methods
- Report damaged controls
Mistakes the Scenario Is Built to Catch
- Cutting dry because the water ran out
- Wearing RPE over stubble
- Dry sweeping
- Cutting near other workers
Competence Assessment Matrix
| Decision point | What the assessor sees | Pass standard |
|---|---|---|
| Control | Water or extraction | Used throughout |
| Supply | Water checked | Checked before cutting |
| RPE | Fit tested and worn correctly | Face-fit test in date, mask sealed |
| Cleanup | Method | Vacuum or wet |
What VR Covers
- Visible dust levels for each method
- Control choice
- RPE fit practice
- Records per operative
What VR Does Not Replace
- Face fit testing
- Health surveillance
- Exposure monitoring
Scope of a One-Scenario Pilot
A pilot builds this scenario as a single module, in Unity or Unreal Engine depending on the visual fidelity the task needs and the headsets on site. It runs on standalone headsets, logs every learner decision, and exports a per-person record for your training file. It is measured against your current method with a test cohort before anything is scaled.
Frequently Asked Questions
What is the UK limit for silica?
The workplace exposure limit for respirable crystalline silica is 0.1 mg/m3 over 8 hours.
Is a dust mask enough?
RPE is the last line of defence and must be face fit tested. Water or extraction should come first.
Is health surveillance required?
It may be under COSHH regulation 11 depending on exposure.
Want this scenario built around your site?
We review your current procedure and tell you which parts can be rehearsed in VR and which still need hands-on practice.
Map Your Highest-Risk ScenarioFurther reading
- Work at Height VR Training for UK Construction Sites (Work at Height Regulations 2005)
- Scaffold Inspection VR Training: 7-Day Checks and Reports (Work at Height Regulations, Regulation 12)
- Ladder and Stepladder VR Training for UK Sites (Work at Height Regulations, Schedule 6)
- MEWP VR Training: Scissor and Boom Lift Operation, Entrapment and Rescue (PUWER and LOLER)
- Silica dust exposure safety guide
- All VR training scenarios: United Kingdom
- VR pilot readiness checklist
- How VR training programs are priced