Page 70 - MRF Training TJ MRF Manual Version 5 22042024 final April 24_Neat

Pinhole bursts often occur where there is already

surface abrasion damage to the hose (see
photograph). To prevent chafing and abrasion

damage all hydraulic hoses should be suitably
positioned, supported and given sufficient physical
protection to prevent such damage occurring in the
first place.

Formal inspection and maintenance regimes for
hydraulic systems should be in place to ensure hoses
remain in a safe and serviceable condition. Do you
have such a regime on your site?

All non-injury high-pressure ruptured hose
incidents should be reported as a Near Miss

Remember and be thoroughly investigated to establish the
cause of failure.

Because the injection entry wound is small the severity of the injury can easily be
underestimated.

Failure to treat the injury immediately can result in amputation of fingers and limbs.

It is important to avoid a fluid injection injury. However, it is equally important to know
precisely what do if you have one.

19 Compressed Air Safety

Explosive Energy

Inflated tyres contain a large amount of stored energy. For example, the sidewall of a typical
commercial vehicle (CV) tyre has over 34 tonnes of force acting on it. Tyres are designed to
withstand this but if they are damaged or used while flat, or significantly underinflated, they
may fail.

The force can then be released explosively at an angle of up to 45 degrees from the rupture
(which is often, but not always, the face of the sidewall), resulting in a destructive air blast
and the ejection of high-speed particles that can cause serious injuries or even death.

If the wheel is not restrained, it can fly metres through the air. Similarly, failure of multi-piece
(‘split rim’) wheels can result in explosive ejection of component parts. These types of tyre
explosion have led to numerous fatalities.

Page 69 of 181

Reviewed April 2024