The CUELA system for registering bodily posture and load handling during work, developed by BIA, has been used for the quantitatively evaluation of the reduction in health risks by excessive stressing of the body during grinding work in a shipyard. The conventional angle grinder, used in crouching body position was replaced by a belt sander, operated in standing position. The vibration exposure has been reduced from 10.7 m/s2 to 0.96 m/s2 (total vibration value). The ergonomic assessment of the grinding work results in a minimisation of potentially harmful body postures from 90.9 % of working time with the angle grinder to 6.2 % using the belt sander.