What is Hand-Arm Vibration Syndrome (HAVS)?

Hand-Arm Vibration Syndrome (HAVS) is an occupational health condition caused by prolonged exposure to vibrating tools and equipment. It affects the blood vessels, nerves, muscles, and joints of the hand, wrist, and arm. Symptoms can include numbness, tingling, and loss of strength in the hands. HAVS can significantly impact a person’s quality of life and ability to work, making it crucial to monitor and control exposure to vibration in the workplace.

How to Use the Hand-Arm Vibration Calculator

Step 1: Enter the Vibration Magnitude

Input the vibration magnitude of the tool or equipment you’re using in m/s² (meters per second squared). This information should be available from the tool manufacturer or can be measured using a vibration meter.

Step 2: Input Exposure Duration

Enter the amount of time you’re exposed to the vibration. This is split into two fields: hours and minutes. Be as accurate as possible to ensure precise calculations.

Step 3: Click “Calculate”

After entering the required information, click the “Calculate” button. The tool will process your input and display the results.

Step 4: Review the Results

The calculator will show your total daily exposure A(8) in m/s² and exposure points. It will also provide an interpretation of your results based on the Exposure Action Value (EAV) and Exposure Limit Value (ELV).

Step 5: Add Multiple Tools (Optional)

If you use multiple vibrating tools throughout the day, you can repeat steps 1-3 for each tool. The calculator will keep track of all entries and calculate your total combined exposure.

Step 6: Interpret the Results

Use the provided interpretation to understand your exposure level. If your exposure is above the EAV (2.5 m/s² A(8)), consider taking action to reduce exposure. If it’s above the ELV (5.0 m/s² A(8)), immediate action is required as this level of exposure is not legally permitted.

Step 7: Take Preventive Action

Based on the results, implement measures to reduce vibration exposure. This could include using low-vibration tools, limiting exposure time, or improving work practices.

Remember, this calculator is a tool to help assess and manage vibration exposure risks. Regular use, combined with appropriate preventive measures, can help protect workers from developing HAVS and ensure compliance with health and safety regulations.