Hand-arm vibration (HAV) is vibration transmitted from work processes into workers’ hands and arms. It can be caused by operating hand-held power tools, such as road breakers, hand-guided equipment, such as bush cutters, or by holding materials being processed by machines, such as pedestal grinders.
Regular and frequent exposure to high levels of vibration can lead to permanent injury. This is most likely when contact with a vibrating tool or process is a regular part of a person’s job. Occasional exposure is unlikely to cause injury, although it should be avoided by people with medical conditions such as Raynaud’s Disease.
Regular exposure to HAV can cause a range of permanent injuries to hands and arms, collectively known as hand-arm vibration syndrome (HAVS). The injuries can include damage to the blood circulatory system, sensory nerves, muscles, bones and joints. One of the commonest conditions is known as vibration white finger (VWF).