Describe the work, not just the chemical
List the substances and explain how they will be handled. Include quantities, concentrations, temperatures, duration, equipment and waste. Identify normal work and foreseeable variations, including cleaning and maintenance.
Keep the safety data sheets with the procedure. The assessment should consider who may be exposed and the controls required for the complete task.
Build an equipment information pack
| Input | Useful detail |
|---|---|
| Cupboard | Model, instructions, working arrangement and test records. |
| Extraction | Fan, duct route, controls and operating requirements. |
| Room | Layout, ventilation and nearby activities. |
| People | Training, supervision and response responsibilities. |
The safe-use guide and room-ventilation guide help organise those discussions.
Turn decisions into instructions
Record the approved working arrangement, operating limits and response to faults. Make it clear who can authorise changes to the procedure or equipment. Where the assessment requires specialist advice or exposure monitoring, include that work in the plan.
For a new installation, use the design brief to carry those requirements into equipment and building-services discussions.
Define review triggers
- A new substance, concentration or procedure.
- Different apparatus, heat input or working layout.
- Changes to the fan, ducting, controls or room ventilation.
- A fault, incident or concern about control effectiveness.
- A planned change in users, workload or maintenance method.
Keep the assessment with the equipment records and make the resulting instructions accessible to the people doing the work. Review the actual arrangement, rather than relying on a generic form alone.