Chemical safety & exposure control
Workers and supervisors who use or work near hazardous substances
What learners will practise.
- Use labels and safety data sheets as inputs to task assessment.
- Recognise exposure routes and choose stronger controls.
- Respond to unknown substances, failed controls and spills within role limits.
- Apply the course decisions to a worked case and justify a response to the capstone.
- Record control evidence, responsible roles and stop/escalation conditions in the workplace worksheet.
Inside the course
- Start with a real decision
- Outcomes and limits
- How the learning works
- The decision map
- M1 · Recognise substances and exposure routes
- Map source, pathway and person
- Include process-generated contaminants
- Exercise 1 · Recognise substances and exposure routes
- M2 · Labels and SDS support assessment
- Use the SDS as evidence, not the assessment
- Resolve identity before use
- Exercise 2 · Labels and SDS support assessment
- M3 · Prevent and control exposure
- Compare control options in order
- Check that extraction captures the contaminant
- Exercise 3 · Prevent and control exposure
- M4 · Select PPE for the substance and task
- Select gloves for the actual substance and use
- Treat respiratory protection as a system
- Exercise 4 · Select PPE for the substance and task
- M5 · Storage, labelling and hygiene
- Store by compatibility and conditions
- Prevent contamination leaving the task
- Exercise 5 · Storage, labelling and hygiene
- M6 · Spills and exposure incidents
- Set a spill-response boundary
- Prepare for exposure before it happens
- Exercise 6 · Spills and exposure incidents
- Worked case · establish the facts
- Worked case · select and verify controls
- Worked case · maintain control
- Capstone · defend your decision
- Capstone · respond to a change
- Workplace job aid
- Local adaptation and references
- Assessment and transfer commitment
Start with understanding.
Hazardous exposure can involve gases, vapours, dusts, fumes, mists or liquids. Harm can result from breathing substances, skin or eye contact, swallowing contamination or other routes relevant to the task. Process-generated dust and fume may be hazardous even without a labelled container.
Then make a decision.
A cleaner finds an unlabelled bottle beside a labelled product. A colleague says both are the same and suggests mixing them to finish faster. The cleaner has only general-purpose gloves.
Discuss: What are the facts, what could go wrong, and what must be verified before proceeding?
Make it specific to your workplace.
- Actual substance inventory and current safety data sheets
- Task-specific exposure controls, PPE and storage compatibility
- Spill, first-aid, waste and emergency procedures
Before deployment, confirm these details with the client’s responsible technical reviewer. The course is a starting point for awareness learning, not a replacement for approved work procedures.
Technical reference basis
- HSE: Substance assessment ↗
- HSE: Safety data sheets ↗
- HSE: Exposure controls ↗
- HSE · hazardous substances at work (INDG136) ↗
Reference review: 2026-10-24. HSE references concern Great Britain; OSHA references concern the United States. They are used for general safety principles, not presented as local law. No regulator endorsement or external accreditation is claimed.