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Fire Piston

Igniting cotton wool by compressing a cylinder of air.

To do - this experiment belongs to Dave.

Either we can ask Dave to make one or buy one of these from Cochrane's of Oxford.
This one is £36 and I think Dave's are bigger but more expensive.

Risk Assessment
Date risk assesment last checked: 
Tue, 01/01/2019
Risk assesment checked by: 
Date risk assesment double checked: 
Tue, 01/01/2019
Risk assesment double-checked by: 
Risk Assessment: 

Drive a piston down a cylinder so fast that the air heats up enough to ignite some cotton wool:

Hazard Risk Likelihood Severity Overall Mitigation Likelihood Severity Overall
Tube Risk of tube cracking and firing bits, injuring demonstrator/children. 2 2 4 Tube is made out of polycarbonate which is very tough. Inspect for any cracks/weaknesses before use. Cover tube in tape/fablon to catch any splinters.
Call first aider in the event of injury.
1 1 1
Pushing too hard Risk of pushing too hard and damaging demonstrator 2 2 4 Only to be done by a demonstrator that is strong/heavy enough and knows what they are doing. 1 1 1
Cotton wool (lit) Burns from cotton wool when lit. Possible fires if allowed to spread to other flammable material. 2 3 6 Only demonstrator should handle cotton wool. Put out quickly once ignited. Only demonstrate in an are clear of flammable material.
Call first aider in the event of injury. Follow venue RA protocol for in case of fire (raise alarm and evacuate).
2 1 2