Understand the abrasive and the surface
Start by identifying what will be projected and what will be removed. An abrasive containing less Respirable crystalline silica may reduce one hazard, while the removed coating can contribute lead or other contaminants. Replacing sand does not make every blasting task harmless.
Product safety data and substrate information support selection. Resolve uncertainty about old paint or suspected asbestos before intervention. Restrictions on abrasive materials depend on the jurisdiction and need checking rather than transferring a rule from another country without review.
Isolate the process and preserve visibility
A cabinet or blast room with extraction can separate blasting from other activities. Doors, seals and windows need maintenance; interlocks should prevent hazardous operation with access points open. Dust removal must preserve the enclosure’s effectiveness throughout the work and subsequent cleaning.
Open blasting requires an exclusion area and control of dispersion. Wind and obstructions alter how particles and dust travel. Other work should not continue within an exposed area merely because the people carrying it out are wearing safety glasses.
Control stored energy and wear
Abrasive action wears nozzles, hoses and connections. Inspections should identify deterioration before leakage, rupture or loss of control occurs. Check component compatibility and capacity against manufacturer documentation, without improvised adjustments or assuming that physically matching fittings are suitable.
The hold-to-run control must remain under the operator’s control and stop flow safely when released. Securing it permanently defeats an essential safeguard. Clearing blockages and repairs require isolation and control of residual pressure according to the equipment’s established procedure.
Protection and subsequent cleaning
Select respiratory protection for the actual contaminants and conditions alongside impact and hearing protection. Where breathing air is supplied, its quality and connections need specific control. A blasting helmet does not replace effective extraction or maintenance of the complete system.
Used abrasive can be contaminated by the removed coating. Define collection, any permitted treatment and disposal without dispersing dust. Compressed-air cleaning can resuspend contaminants. The review must also address assistants, cleaning personnel and people carrying out maintenance on dust filters.
