Describe hand-arm vibrations (HAVS); what are the long-term issues an employee might have if vibration sources are not corrected?

1# Describe hand-arm vibrations (HAVS); what are the long-term issues an employee might have if vibration sources are not corrected?

Describe hand-arm vibrations (HAVS); what are the long-term issues an employee might have if vibration sources are not corrected

Vibration and Workstation design
1# Describe hand-arm vibrations (HAVS); what are the long-term issues an employee might have if vibration sources are not corrected?

2# Describe the ergonomic risk factors associated with a sharp edge on a work bench. Include supporting evidence as part of your discussion.

More details;

The hand-arm vibration syndrome (sometimes abbreviated to HAVS) causes changes in the sensation of the fingers which can lead to permanent numbness of fingers, muscle weakness and, in some cases, bouts of white finger. It is caused by working with vibrating tools. It would be unusual for you to develop hand-arm vibration syndrome unless you had used vibrating tools for at least ten years. If you stop working with vibrating tools it may prevent mild symptoms from becoming worse.

What is hand-arm vibration syndrome?

Hand-arm vibration syndrome (HAVS) causes symptoms in fingers, hands and arms, as a result of using vibrating tools. The name was changed to HAVS, as other symptoms may occur in addition to white fingers.

What causes hand-arm vibration syndrome?

HAVS is caused by repeated and frequent use of hand-held vibrating tools – for example, power drills, chainsaws and pneumatic drills. It may also be cause by holding or working with machinery that vibrates. It is not clear how vibration causes the condition. Probably, due to slight but repeated injury to the small nerves and blood vessels in the fingers. Over time these may gradually lose some of their function and cause symptoms. Possibly, up to 1 in 10 people who work regularly with vibrating tools may develop HAVS.

Nerve symptoms

Loss of feeling (numbness) and/or having pins and needles (tingling) in one or more fingers are usually the early features. It may be mild and just affect the tips of the finger(s) and come and go. In severe cases a permanent numbness may extend along affected fingers. This may cause clumsiness and difficulty in doing fine tasks. For example, it may become difficult to fasten buttons or to handle coins, screws, nails, threads, etc. In many people the severity of nerve symptoms is somewhere in between these two extremes.

Describe hand-arm vibrations (HAVS); what are the long-term issues an employee might have if vibration sources are not corrected?

Describe hand-arm vibrations (HAVS); what are the long-term issues an employee might have if vibration sources are not corrected

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