NAS — National Assurance Standard

Compliance Tools · COSHH

COSHH Checker — Do Your Assessments Cover What They Should?

Check whether your COSHH assessments contain the detail that assessors look for across all major pre-qualification schemes.

What COSHH Assessments Must Cover

Substance identification (product name, supplier, SDS reference)
Hazard classification (GHS/CLP hazard categories)
Routes of exposure (inhalation, skin, ingestion)
Control measures (following the hierarchy of controls)
PPE requirements (specific product and standard, e.g. FFP3 mask)
Emergency procedures (spill, exposure, fire)
Review date and signature of person responsible
Date the assessment was carried out

Common Missing Elements in COSHH Assessments

Generic substance list with no detail

A list of products without hazard data or control measures is not a COSHH assessment.

No control hierarchy applied

COSHH requires you to consider elimination, substitution, and engineering controls before PPE.

Missing PPE specification

"Wear gloves" is not acceptable — the type, standard, and reason must be specified.

Unsigned or undated assessment

Assessors cannot confirm the document is current or authorised without a date and signature.

Why COSHH Matters for Contractors

COSHH assessments are required by all major schemes for contractors who use or are exposed to hazardous substances. This is especially important for painters, roofers, flooring contractors, gas engineers, and anyone using solvents, adhesives, dusts, or fumes. The scan checks your documents for substance lists, control measures, PPE specifications, and signatory/date evidence.

Ready to Check Your Documents?

Upload your compliance documents and get an instant gap analysis across CHAS, SMAS, Constructionline, SafeContractor and NRTAUK NAS.

One-off fee · No subscription · Plain-English report · Downloadable PDF

This tool provides an automated gap analysis based on uploaded evidence and rule-based checks. It is not legal advice, certification, approval, or a guarantee of acceptance by CHAS, SMAS, Constructionline, SafeContractor or any other organisation.

Frequently Asked Questions