Step-by-step procedures for the questions duty holders ask us most.
How to manage asbestos in your building
Start by understanding where asbestos may be present, its condition and how people use the building. Use that information to plan how it will be managed.
- 1
Commission the right survey
Ask a competent surveyor to assess the building and agree the survey scope, including access limitations.
- 2
Build the asbestos register
Record identified or presumed materials, their locations, condition and the information needed to find them again.
- 3
Assess the priorities
Consider material condition alongside occupation, maintenance and the likelihood of disturbance.
- 4
Set out the management plan
Assign responsibilities and identify the actions, controls and records needed for the building.
- 5
Review condition and changes
Arrange reinspection at a risk-based interval and review the plan when materials, use or planned work change.
- 6
Brief staff and contractors
Make relevant asbestos information available before work starts. Seek specialist advice before disturbing suspect materials.
A clear register and management plan help people make informed decisionsTalk to us about this »
How to plan and tender an asbestos removal
Define the project before seeking prices. OHSS provides independent advice, oversight and monitoring; removal is carried out by other contractors.
- 1
Confirm the survey scope
Establish what survey information is needed for the planned works, including refurbishment or demolition areas.
- 2
Define the removal brief
Set out the materials, work area, access and handover requirements so contractors can price a consistent scope.
- 3
Assess suitable contractors
Review competence, relevant permissions and experience alongside the proposed method, programme and price.
- 4
Review the plan of work
Check responsibilities, controls, waste arrangements and applicable notification requirements before work begins.
- 5
Arrange independent monitoring
Agree the independent oversight and air monitoring appropriate to the work and surrounding areas.
- 6
Plan clearance and handover
Arrange the required clearance assessment and documentation, including four-stage clearance where applicable, and update the building records.
Keep independent assessment separate from the removal contractTalk to us about this »
How to investigate damp and mould
Begin with the moisture problem and how the building is used. An investigation should identify likely causes and the evidence needed to choose practical next steps.
- 1
Record the affected areas
Note visible growth, water damage, odours and when the problem appears. Gather maintenance and occupant observations.
- 2
Investigate moisture
Assess possible leaks, condensation and building defects, using appropriate moisture measurements where useful.
- 3
Check use and ventilation
Consider occupancy, heating, ventilation and how moisture moves through the affected space.
- 4
Decide whether to sample
Use specialist sampling only where it can resolve a defined uncertainty. Visible mould does not always need testing.
- 5
Agree corrective work
Address the moisture source and obtain suitable advice on cleaning or remediation and any building repairs.
- 6
Check the outcome
Review completed work, drying and signs of recurrence. Use further measurements or sampling where justified.
Sampling is selected where it will help answer a specific questionTalk to us about this »
How to check indoor air quality
Combine occupant feedback with a review of ventilation, building use and possible sources of contamination. Choose measurements that answer the questions raised.
- 1
Understand the concern
Record where and when issues occur, how rooms are used and any changes to occupancy, equipment or materials.
- 2
Review the building
Look at ventilation arrangements, maintenance, outdoor air sources and possible indoor emissions.
- 3
Select useful measurements
Consider temperature, humidity and carbon dioxide alongside any contaminants identified by the assessment.
- 4
Monitor representative conditions
Plan locations and measurement periods around occupancy and the conditions being investigated.
- 5
Interpret the findings
Assess results against appropriate indoor-air guidance, with context and limitations clearly explained.
- 6
Report and follow up
Prioritise practical improvements and agree how their effectiveness will be checked.
The monitoring plan should reflect the building and its occupied hoursTalk to us about this »
How to run an exposure monitoring programme
Identify who may be exposed, select methods suited to the hazard and use the findings to improve controls. Noise, vibration, chemicals and lead require different measurement approaches.
- 1
Identify exposure groups
Group relevant tasks, hazards and working patterns to decide whose exposure needs to be assessed.
- 2
Plan representative monitoring
Choose suitable personal or task-based measurements for the hazard, work activity and assessment period.
- 3
Use appropriate methods
Use suitable instruments and sampling methods, with laboratory analysis where needed and clear sample records.
- 4
Evaluate the results
Compare findings with applicable limits or action values, explaining variability and the limits of the assessment.
- 5
Improve controls
Prioritise prevention and controls at source, then assess supporting measures for the work involved.
- 6
Review and follow up
Check whether controls work and agree further monitoring. Identify any need for occupational-health advice on health surveillance.
Measurement methods and duration depend on the exposure being assessedTalk to us about this »