Some lifts have exposure that will be considered not acceptable for normal lifts, this could be exposure to persons, dangerous materials, chemicals, critical structure, pressurized pipes in live plants, wellhead or pipelines. Common among these cases is the fact that the consequence of a failed lift is much larger with regards to damage of the lifted object itself or the immediate surroundings. These lifts are all in the category of high risk as per NORSOK standards and requires measures.
Lifting appliances and lifting operations in the category as listed above, shall be designed and planned so as to mitigate and prevent the amount of risk. NORSOK R002 Annex K (informative) describes possible methods and applicable means.