Anyone who cuts, grinds or drills concrete, stone, brick, block, tile, mortar or screed, including engineered stone worktop fabrication, and anyone working nearby without protection of their own.
The dangerous respirable silica dust is too fine to see in normal light, so you cannot judge the risk by eye. Silicosis is scarring of the lung that cannot be reversed and can keep getting worse after exposure stops. Engineered stone worktop material can carry a much higher silica content than natural granite, which makes worktop fabrication some of the highest-risk cutting work.
The pack covers control before RPE, never dry cutting silica-bearing material, setting up water suppression or on-tool extraction before work starts, RPE and face fit testing on the individual wearer, and never sweeping or using compressed air to clean up dust.
One hazard, done completely, for the whole firm.
The pack also has a theory test answer key. It is supplied separately to the employer, not published in the pack itself, so the test stays a genuine assessment when your own supervisor marks it.
Available for each person, where a customer or principal contractor wants third-party evidence.
You assess your own people in-house using the pack, and send PHW the completed records. PHW checks the records and, where they hold up, issues a certificate carrying a QR code that resolves to a live verification page. The certificate states plainly that the assessment was carried out in-house and verified by PHW, recording PHW's verification of that in-house assessment; records that are too thin are rejected rather than certified.
Trades that cut, grind or drill silica-bearing material.