Chainsaw Operations Safety

Chainsaws are one of the most dangerous hand-held tools used on construction sites, capable of causing fatal injuries instantly.
All chainsaw operators must hold a valid NPTC or City & Guilds certificate for the specific chainsaw operation being carried out.
Chainsaw PPE is specialist and mandatory: helmet with visor and hearing defenders, chainsaw trousers, gloves, and steel-toe boots.
Chainsaw trousers contain cut-resistant fibres that clog the chain and stop the saw within fractions of a second on contact.
Kickback occurs when the tip of the bar contacts an object, throwing the saw violently back towards the operator's head and body.
A chain brake stops the chain within milliseconds of activation and must be tested before every use of the saw.
Tree felling on construction sites is a specialist activity requiring specific qualifications beyond basic chainsaw competence.
Exclusion zones must be established around chainsaw operations — the zone for felling is typically twice the tree height.
Refuelling must be carried out with the saw switched off, cooled, and away from any ignition source.
Chainsaw maintenance including chain tension, sharpness, lubrication, and bar condition must be checked before every use.

Fatal contact	A chainsaw cuts through flesh and bone in milliseconds — specialist PPE and correct technique are the only defences.
Kickback	The saw's violent kickback towards the operator's head is the most common cause of chainsaw injuries — anti-kickback features prevent it.
Specialist competence	Chainsaw operation requires specific certification — an untrained operator is a danger to themselves and everyone nearby.

Do

Don't

Hold a valid NPTC or City & Guilds chainsaw certificate before operating.
Wear full chainsaw PPE: helmet, visor, ear defenders, chainsaw trousers, gloves, and boots.
Test the chain brake before every use to confirm it stops the chain immediately.
Establish exclusion zones around the chainsaw operation — two tree heights for felling.
Inspect chain tension, sharpness, lubrication, and bar condition before each use.
Use anti-kickback chain and maintain the chain brake in working condition at all times.
Refuel only with the saw switched off, cooled down, and away from ignition sources.
Plan every cut before starting — assess lean, hazards, and escape routes for felling.
Keep both hands on the saw handles during all cutting operations.
Carry the saw with the chain brake engaged and bar pointing backwards when walking.

DON'T operate a chainsaw without the required NPTC or City & Guilds certification.
DON'T use a chainsaw without full specialist PPE — standard site PPE is not sufficient.
DON'T use a saw with a faulty or untested chain brake — it is your primary defence.
DON'T allow anyone into the exclusion zone during chainsaw or felling operations.
DON'T use a saw with a blunt, slack, or poorly lubricated chain — it increases kickback.
DON'T cut with the tip of the bar — this is the kickback danger zone.
DON'T refuel a hot chainsaw or near sources of ignition.
DON'T fell trees without a specific felling plan covering lean, hazards, and escape routes.
DON'T operate a chainsaw one-handed under any circumstances.
DON'T carry a running chainsaw — engage the brake and point the bar behind you.

See also: Landscaping Safety Awareness | Tree Surgery & Arboriculture Safety

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