These items are all subject to deterioration or physical damage of one kind or another and should always be inspected before use. Operational structural failure of twist-lock inter-layer stackers may be a result of rough handling at discharge ports (e.g., stevedores throwing down the twist-locks from high level). Such rough handling could also cause defects in other components that could fail under operational stress. The utilization of suitable bags and boxes to collect components before lowering them to deck level helps to prevent such misuse.
Inspections and maintenance reports are to be entered into the "Log for Inspection Maintenance" shown on the last page of this chapter.