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Safety during tyre inflation in motor vehicle repair
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Safety during tyre inflation in motor vehicle repair
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Operation of the ultrasonic transducers is based on the echo-sounding principle. Short ultrasonic pulses are sent out by the ultrasonic transducer, reflected from objects in the vicinity and received again by the ultrasonic transducer. The ultrasonic transducer sends the period of time required between sending the ultrasonic pulse and receiving the first echo to the PDC unit which, in turn, calculates the distance to the nearest object from this period of time. Ultrasonic waves propagate at different speeds in gases, liquids and solids. The approximate speed of ultrasonic waves through air at 15 °C is 340 miles. | HSE Health and Safety Executive Safety during tyre inflation in motor vehicle repair HSE Health and Safety Executive Introduction Safety during tyre inflation in motor vehicle repair This is a web-friendly version of leaflet INDG433 Removal replacement and inflation of tyres is extremely common in motor vehicle repair around 30 million tyres are replaced in the UK each year so it may seem a simple task. But it can cause injury and even death resulting from manual handling of the tyre and wheel collapse of an elevated vehicle being struck by vehicles at the roadside and explosion of the tyre or disintegration of the wheel during inflation. This leaflet deals specifically with the dangers during tyre inflation - advice on the other hazards can be found in Health and safety in motor vehicle repair and associated industries HSG261 . See Need to know more at the end of the leaflet for details. 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. 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. Risk of failure There will be an increased risk of failure following tyre repair where there has been sidewall damage eg after a tyre has been run flat or significantly underinflated or when fitting a tyre to a split-rim wheel. 1 of pages Health and Safety Executive Cuts and splits should be clearly visible by inspection and there
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Safety during tyre inflation in motor vehicle repair
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