In this article we talk about service and maintenance of vacuums that have only been used to handle dust with silica content.
Exposure to airborne dust with high concentrations of free silica can be harmful and sometimes fatal, the result is a condition called Silicosis which is when the tiny silica particles become lodged in the surface of the lung and causes a scar. eventually the lung is covered in scar tissue and it becomes difficult for the lung to function.
Unlike asbestos and lead contaminated vacuums, there is very little recommended or legislated when it comes to rules for safe servicing and maintenance of vacuums that have handled dust with silica content.
Floorex recommends contractors and hire companies set up their own SOP (Safe Operating Procedure) for your company that suits your workshop and environment to protect your staff and those around them.
An effective SOP may include things like;
- Individuals are to wear protective mask (with correct rating filters) during service and maintenance.
- Any dust remaining in the vacuum bin or bag should be disposed of using this procedure as specified in the manual of the vacuum.
- Do not blow down of equipment using compressed air, use a damp cloth to wipe and absorb dust and dispose of cloths in a bag and seal.
- Clean up and service should only be performed in dust control booth with appropriate exhaust filters.
- Unit should have a cap or method to seal the inlet port to prevent dust becoming airborne during moving or transport.
- Disposal of filters and parts should be bagged in strong 120um poly bags and zip tied off. Something like the CPS-610 is recommended.
- Any other items relevant to your models of vacuum that are outlined in the respective manuals.
- Any other items relevant to your workspace.
We would recommend you make sure your employees know of the risks and SOP and sign off on the procedure to protect them and your company.
At this point, in the concrete grinding industry, we have had very little proof that what has been considered acceptable till now will cause health issues in the future.
Potential for silica exposure when grinding and dealing with the associated machines does exist, so minimising the exposure is important for all personal and bystanders.
Clause: Dealing with asbestos or other hazardous dust requires the strictest safety measures and there is certification and courses available for such. This document only covers the suggestions for dust extractors that have been used with dust containing silica from concrete grinding. This document is correct at the time of posting; however things change quickly. Advice given by Floorex and our staff is general in nature and should not be considered legal in nature, we recommend you seek professional advice.