| File Reference : | COSHH Assessment Hot Lime (Quick Lime) |
| Date File Updated | 01-04-26 |
| File Format | MS Word |
| No. of files | 1 |
| Category | COSHH Assessments | Tags: ISO 45001 |
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This example COSHH risk assessment has been prepared using the
F-HS5 COSHH Assessment form template which has been designed to record and manage the risks associated with substances hazardous to health and includes:
- Substance details
- Physical description
- Health effects and first aid
- Workplace exposure limits (WELs)
- CLP hazard classification — visual hazard icons
- Risk rating
- Control measures
- PPE required — visual PPE icons
- Environmental considerations
The file is supplied in fully editable MS Word format and can be easily customised and saved to Google Docs format if required. The document uses pre-defined style formatting throughout with styles to match the risk-ratings. All text is in Calibri font for improved readability.
The following document labelling is included in the footer:
- Form number and title
- Information-classification
- Version
- Page number / total pages
Download this form template with your company name and logo already added!
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This file is included in the alphaZ subscription.
COSHH Assessment — Hot Lime / Quicklime (Calcium Oxide / CaO)
This pre-completed COSHH assessment covers quicklime (calcium oxide / CaO) — a highly reactive white powder or granular material that reacts violently with water generating intense heat (up to 300°C). Used in construction, agriculture and water treatment. Must be treated as a highly hazardous material; full PPE and immediate access to eyewash and emergency shower are essential.
What Does This COSHH Assessment Cover?
The assessment is fully completed and ready to use, covering all sections required for a complete hazardous substance risk assessment:
- Substance identification — trade name (Quicklime / Hot Lime / Calcium Oxide), chemical name (CaO), SDS reference and physical state
- Health effects and first aid — severe inhalation burns including risk of pulmonary oedema; life-threatening ingestion burns; severe exothermic skin burns (heat accelerates injury); permanent blindness from eye contact; specific emergency first aid for each route
- Violent exothermic reaction hazard — quicklime reacts violently with water; dry lime must be brushed off skin before applying water; adding water to bulk quicklime causes explosive spattering; may ignite combustible materials through heat of reaction
- Workplace exposure limits — calcium oxide TWA 2 mg/m³ over 8 hours; avoid all dust inhalation using LEV or RPE
- CLP hazard classification — Corrosive pictogram
- PPE requirements — full face shield (minimum goggles), FFP3 dust respirator, full coveralls, PVC or neoprene gloves covering forearms; eyewash and emergency shower immediately accessible
- Emergency procedures — do not apply water to dry spills; contain and collect dry; store in sealed containers in dry location
Who Is This COSHH Assessment For?
This assessment is suitable for any workplace where quicklime is used, including:
- Heritage lime slaking and hot lime plastering specialists
- Agricultural lime spreading and soil treatment operations
- Water and wastewater treatment facilities
- Chemical and industrial processing using CaO
COSHH Compliance
This document provides ready-to-use evidence of COSHH compliance and supports occupational health and safety management. The assessment is based on the F-HS5 COSHH Assessment template, is fully editable in Microsoft Word, and can be customised with your company details, site-specific information and review dates.
