GWO Lift Commission, Inspection, Installation and Maintenance Training Standard V0
2021-09-30_TS_LCIIM_V0
When lifting within the top most ⅓ part of the yellow area, manual handling is only accepted if it is performed under optimal conditions (i.e. the entire lifting operation is performed centered in front of the body, the lift is performed between mid-thigh and elbow height, the load is intended for manual handling, each lift is followed by a two-minute rest, the load is not carried, the foothold is stable, and the climate is appropriate). Lifting within the middle ⅓ part of the yellow area, the amount and degree of aggravating factors determine whether the manual handling is harmful to health and to what extent it is harmful. Lifting within the bottom ⅓ part of the yellow area, it usually requires several aggravating factors for the manual handling to be harmful to health. In some cases, one single aggravating factor, e.g. the working posture, may cause lifting within the bottom ⅓ part of the yellow area to be harmful to health. Green area: Lifting within the green area is usually not harmful to health based on the load weight and reaching distance. There may be additional risk factors, which are individually harmful, causing the manual handling to be harmful to health, e.g. poor working postures, a high lifting frequency, or an excessive overall strain on the body. 2. AGGRAVATING FACTORS The aggravating factors of the lifting operation must be considered which, individually and especially in combination, will enhance the strain on the muscular- skeletal system posing a risk of injury and manual handling harmful to health.
Examples of aggravating factors - categorized related to the four elements of the T.I.L.E principle:
Concerning the Task
No suitable handling aids available, stooping/bending, twisting, stooping/bending and twisting, lifting below knee height or above shoulder height, carrying, pushing, pulling or precise positioning of the load, sudden movement or stop, lifting for a longer period of time, high pace of work, inadequate rest or recovery periods, asymmetric or one-handed lifting, team handling1, seated or kneeling position, or lack of planning.
Concerning the Individual
No warm-up, capability, previous and pre-existing injuries, unusual strength or height required for the activity, specialist knowledge or training required, uneven height of team handling individuals.
Concerning the Load
Unwieldy, difficult to grasp, difficult to grip, sharp edges, contents likely to move or shift, hot or cold.
Concerning the Environment
1 Team handling is in general not a legitimate substitution for using handling aids.
Global Wind Organisation www.globalwindsafety.org
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