Operators are poorly trained. Inspection is infrequent. Abrasion, cutting, dirt are present. Shock loads or extreme dynamic loadings are likely. High temperatures are present.
Chemicals are presents.
Ropes are kept in service indefinitely. Tensions on the rope are maintained continuously for long periods. Rope can be subject to sharp bends or is used over pulleys or surfaces with too small a radius. Death, injury or loss of valuable property may result from failure. For critical applications, a design factor greater than 12 may be necessary.