What you need to know before you use the V-MAC
To use the V-MAC you need to:
- Be familiar with the MAC;
- Use the V-MAC graph alongside the MAC;
- Find out the weights of each load the worker handled during a shift;
- Find out the average distances loads are carried (if at all).
Downloading the V-MAC workbook
You can download the V-MAC workbook from here. Your computer needs to be able to use files created with Microsoft Excel 2003 or later.
The V-MAC uses exactly the same colour bands as the MAC.
What about different length shifts?
You can use the V-MAC for shift lengths between 4 and 12 hours. It takes account of allowances for breaks within a work shift.
It can’t deal with shifts longer than 12 hours. If you have a shift system with longer shifts you should do a detailed risk assessment instead of using the V-MAC.
Here is what we mean by some key terms:
- Picking up a load and putting it down again somewhere within 2 m of the start position.
- An item a worker picks up in the workplace.
- Picking up a load, walking a distance of at least 2 m while holding it in the arms, and putting it down again.
- Carry distance
- Where a task involves carrying many loads for different distances, the carry distance is the distance to the half-way point between the shortest carry and the longest carry.
- Shift length
- The total time somebody is expected to be in the workplace on a working day, including meal breaks and other rest breaks.