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|Tool or process name||Vibration magnitude m/s²||Exposure points per hour||Time to reach EAV||Time to reach ELV||Exposure duration Hours||Exposure duration Minutes||Partial exposure m/s² (A8)||Partial exposure points|
EAV: Exposure Action Value = 2.5 m/s² A(8), ELV: Exposure Limit Value = 5 m/s² A(8)
Tools to Measure and Monitor HAVS
How do you measure the Vibration Magnitude (m/s²)?
The vibration magnitude should be measured precisely using a Hand-Arm Vibration Meter.
What is Hand-Arm Vibration Syndrome (HAVS)?
HAVS is a condition caused by regular and prolonged use of hand-held vibrating tools and equipment. It affects blood vessels, nerves, muscles, and joints of the hand, wrist, and arm. Symptoms can include numbness, tingling, and loss of strength or dexterity in the hands.
How does the HAVS calculator help?
The HAVS calculator is designed to help users assess the risk of HAVS by calculating the vibration exposure level of tools or processes. It provides estimates on exposure points per hour, time to reach Exposure Action Value (EAV), and Exposure Limit Value (ELV), helping users manage and limit exposure to hand-arm vibration.
If you require an offline version of a HAVS Calculator, we recommend downloading the HSE HAVS Calculator here.
What are EAV and ELV?
EAV (Exposure Action Value) and ELV (Exposure Limit Value) are thresholds set for vibration exposure. EAV is the level above which employees should be informed of the risks to health and preventive actions taken. ELV is the maximum amount of vibration an employee may be exposed to on any single day.
What can be done to reduce the risk of HAVS?
To reduce HAVS risk, consider:
- Using low-vibration tools and equipment.
- Implementing regular maintenance on tools to ensure they are in good condition.
- Limiting the time spent using vibrating tools each day.
- Providing training on the correct use of equipment.
- Encouraging regular breaks and exercises to improve blood circulation.
Are there any legal requirements regarding hand-arm vibration?
Yes, employers have legal responsibilities under health and safety law to assess and manage the risks from hand-arm vibration and prevent HAVS. Failing to comply with these legal requirements can result in large fines from the HSE.
What are common tools that might cause HAVS?
Common tools include:
- Hand-held power drills
How often should I use the HAVS calculator?
Use the calculator whenever there is a change in tools, processes, or work patterns. Regular assessments help in keeping track of exposure levels and making necessary adjustments.
Can HAVS be cured?
While the symptoms of HAVS can be managed, the condition is largely irreversible. Early diagnosis and intervention are crucial to prevent further damage. If symptoms are experienced, it’s important to consult a healthcare professional.
Who should be concerned about HAVS?
Workers in construction, mining, forestry, manufacturing, and maintenance, or anyone frequently using hand-held or hand-guided power tools and machines should be aware of HAVS risks.
What are the early signs of HAVS?
Early signs include:
- Tingling or numbness in the fingers.
- Not being able to feel things properly.
- Loss of strength in the hands.
- Fingers going white (blanching) and becoming red and painful on recovery (particularly in cold and wet conditions).
If you need help measuring your power tools for hand-arm vibration, please call us on +441723 339 715, email sa[email protected] or message us on our live chat below.