Silica Compliance
Compliance · Compliance overview
Silica compliance is the structured discharge of the COSHH duties that apply to respirable crystalline silica: silica risk assessment, silica control selection, silica LEV thorough examination, personal silica air sampling against the silica WEL, training, health surveillance and review. This page sets out what silica workplace compliance looks like in practice, where silica HSE guidance applies, and how silica legal requirements drive monitoring decisions.
What silica compliance actually covers
Silica compliance is not a single document. It is the demonstrable discharge of the COSHH duties that apply specifically to respirable crystalline silica: assess the silica exposure, prevent it where reasonably practicable, otherwise control it against the COSHH hierarchy, verify the controls through silica air sampling and silica LEV thorough examination, train operators, bring exposed workers into appropriate health surveillance, and review the silica COSHH assessment when conditions change.
Silica workplace compliance is judged on whether each of those steps is actually performed and documented for the silica-specific work being done. A generic COSHH file that mentions silica in passing rarely supports silica compliance where silica is a primary exposure on site.
Silica COSHH duties in practice
Silica COSHH duties begin with a suitable and sufficient silica risk assessment that identifies silica-generating tasks, silica-bearing materials, the operators and bystanders exposed, the controls in place and the residual silica exposure after those controls. The assessment is the document that the rest of the silica compliance position is built on.
From the assessment flow the operational duties: prevent silica exposure where reasonably practicable; otherwise control it through the COSHH hierarchy with engineering controls (water suppression, on-tool extraction, enclosure, silica LEV) prioritised over RPE; verify the controls through personal silica air sampling against the silica WEL; subject silica LEV to thorough examination under Regulation 9; fit-test and maintain RPE; train operators; bring routinely exposed workers into health surveillance proportionate to the exposure profile; and review the assessment when tasks, materials, controls, monitoring results or surveillance findings change.
- Silica risk assessment that identifies tasks, materials, operators and controls.
- Silica control selection against the COSHH hierarchy, with engineering controls first.
- Personal silica air sampling against the silica WEL on representative shifts.
- Silica LEV thorough examination under COSHH Regulation 9.
- RPE fit testing and silica-specific operator training.
- Health surveillance proportionate to the silica exposure profile.
Workplace context for silica compliance
Silica compliance carries operational weight in workplaces where respirable crystalline silica is generated routinely: construction cutting and chasing, engineered stone fabrication, concrete cutting and coring, abrasive blasting, quarrying, tunnelling and refractories. Each has its own dominant silica exposure profile and its own dominant control configuration, and silica compliance has to reflect that — a single template applied across very different silica-generating workplaces rarely holds up.
It also matters in workplaces where silica is intermittent but high — short demolition tasks, periodic kerb-cutting, occasional blasting — where the silica COSHH paperwork must still cover those tasks even though they do not run every day. Silica compliance is not measured by frequency of the task; it is measured by whether the exposure it generates is assessed and controlled when it does run.
Silica HSE guidance and enforcement context
Silica HSE guidance — including the EH40 publication of the silica WEL, the HSE construction information sheets on dust control, the silica stone fabrication guidance and sector-specific COSHH essentials — is the practical framing against which UK silica compliance is judged. It is not a checklist, but it is the published expectation of how silica COSHH duties should be discharged on the ground.
UK silica enforcement has consistently focused on the same gaps: dry cutting without water suppression, missing or unconnected on-tool extraction, silica LEV without current thorough examination, RPE without fit testing, silica risk assessments that pre-date the work being done, and missing or incomplete silica air sampling data. Each is a routine inspection finding and each is straightforward to address through a silica-specific compliance review.
Silica monitoring as silica compliance evidence
Personal silica air sampling against the silica WEL is the single most important piece of objective evidence in a silica compliance file. It demonstrates that the silica control configuration in place is actually keeping operator exposure below the WEL on representative shifts, and it allows the silica COSHH assessment to be anchored in measured data rather than in equipment specification or operator self-report.
Silica monitoring also feeds the review trigger. Where measured silica exposure approaches an in-house action level, silica controls are reviewed before the WEL is in play. Where measured silica exposure exceeds the WEL, the silica COSHH assessment is updated and engineering improvements are made before reliance on RPE is increased.
When to request silica monitoring and compliance review
A silica compliance review is normally commissioned after a workplace inspection or enforcement notice, before a tender or insurance audit, after a change in process or materials that the existing silica COSHH assessment did not contemplate, after a health surveillance finding that may relate to silica exposure, or simply where the existing silica compliance file has aged beyond the point that it credibly reflects current work.
Periodic silica air sampling and periodic silica LEV thorough examination are the two recurring inputs that keep a silica compliance position current between formal reviews.
Frequently asked questions
What does silica compliance mean under UK COSHH?
Silica compliance under UK COSHH is the demonstrable discharge of the silica-specific COSHH duties: silica risk assessment, silica control selection against the hierarchy, personal silica air sampling against the silica WEL, silica LEV thorough examination, RPE fit testing, operator training, health surveillance proportionate to the silica exposure profile, and review of the silica COSHH assessment when conditions change.
Is a generic COSHH file enough for silica compliance?
Rarely, where silica is a primary exposure on site. A generic COSHH file that mentions silica in passing does not normally support silica COSHH compliance for engineered stone fabrication, construction cutting, concrete coring, abrasive blasting or quarry processing. A silica-specific risk assessment and silica-specific control evidence are usually required.
Does silica HSE guidance set the silica legal requirements?
The silica legal requirements sit in COSHH and supporting regulations; silica HSE guidance — including EH40 and sector-specific construction information sheets — sets out how those legal requirements are commonly discharged in practice. UK enforcement is normally framed against both the regulations and the published HSE expectation.
How often does silica compliance need to be reviewed?
Silica compliance is reviewed whenever tasks, materials or controls change, whenever silica air monitoring or health surveillance findings suggest the silica exposure profile has shifted, after a workplace inspection or enforcement event, and otherwise on a periodic cycle proportionate to the silica workplace risk. Engineered stone and high-energy construction silica work typically warrant shorter intervals.
What is the role of silica air sampling in silica compliance?
Silica air sampling is the objective evidence that links the silica COSHH assessment to actual operator exposure. It demonstrates whether silica controls are keeping measured exposure below the silica WEL on representative shifts and provides the data needed to defend or to revise the silica compliance position.
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