Chemical Exposure Emergency Response

Chemical exposure emergencies on construction sites involve skin contact, eye splash, inhalation, or ingestion of hazardous substances.
Common chemicals causing emergencies include cement, lime, solvents, acids, epoxies, and treatment works dosing chemicals.
Immediate first aid within seconds of exposure dramatically reduces the severity of chemical injuries.
Eye contact with alkaline substances like cement and lime causes rapid corneal damage without immediate irrigation.
Inhalation of chemical vapours, fumes, or gases can cause unconsciousness and respiratory failure within minutes.
The Health and Safety (First Aid) Regulations 1981 require adequate first aid provision for chemical risks on site.
Safety data sheets (SDS) for every chemical on site provide specific first aid instructions for each substance.
Emergency eyewash stations and safety showers must be within 10 seconds' travel of all chemical handling areas.
Some chemicals require specific antidotes or treatments — hospital staff need to know the substance involved.
Skin absorption of some chemicals including organophosphates and solvents can cause systemic poisoning.

Save sight	Alkaline chemicals destroy the cornea within minutes — immediate eye irrigation is the only way to prevent blindness.
Prevent death	Inhaled chemical vapours can cause fatal respiratory failure — rapid removal to fresh air and calling 999 saves lives.
Time critical	Chemical injury worsens every second without treatment — knowing what to do immediately makes the critical difference.

Do

Don't

Flush chemical splashes from eyes with clean water for at least 20 minutes immediately
Remove contaminated clothing while flushing the affected skin with large volumes of water
Move casualties exposed to chemical vapours to fresh air and call emergency services
Check the safety data sheet for specific first aid instructions for the chemical involved
Test emergency eyewash stations and showers weekly to confirm they are operational
Tell paramedics the name of the chemical, how the exposure occurred, and the duration
Keep the SDS available to give to hospital staff treating the casualty
Ensure first aiders are trained in chemical exposure first aid specific to site chemicals
Position eyewash stations within 10 seconds' walk of all chemical handling work areas
Report all chemical exposure incidents including minor splashes for investigation and learning

DON'T delay eye irrigation — start flushing immediately even before calling for help
DON'T rub eyes after chemical contact — this spreads the chemical and worsens damage
DON'T attempt to neutralise chemicals on the skin — flush with water only
DON'T induce vomiting if a chemical has been swallowed unless the SDS specifically instructs it
DON'T enter a vapour-contaminated area to rescue someone without RPE and backup
DON'T remove contact lenses before flushing — irrigate immediately then remove if possible
DON'T leave a casualty alone after chemical exposure — monitor for deterioration continuously
DON'T use cold water or ice on chemical burns — use running clean water at ambient temperature
DON'T assume minor skin contact is harmless — some chemicals absorb through the skin
DON'T allow eyewash stations to remain empty, expired, or inaccessible in work areas

See also: Chemical Spill Response | COSHH Awareness

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