Operation and or use procedures are not well defined and or controlled. Inspection is infrequent. Abrasion, dirt, and cutting is present. Shock loads or extreme dynamic loadings are likely. High temperatures are present.
Chemicals are present.
Ropes are kept in service indefinitely. Tensions on rope are maintained continuously or for long periods. Rope can be subject to sharp bends or in use with pulleys or surfaces with too small a radius. Knots are used. Death, injury or loss of valuable property may result from rope failure.