4 Inspection & Maintenance
4.1 Introduction
Following the recommended procedures set out in this section will help to ensure safe
operation of the WAVE.
4.2 Definitions
Transfer Lifts
One transfer lift is defined as one pickup and put down when passengers or cargo are on
board.
Usage Category
This is defined by the number of transfer lifts per year. There are three different usage
categories. See Table 4.5.
Critical Parts
These are the identified set of load bearing parts.
Consumable Parts
These parts are identified as needing periodic replacement. The timing for their replacement
is based on both the unit’s usage and a parts condition assessment.
Competent Person
A competent person is a person who has appropriate practical and theoretical knowledge
and experience of the equipment. This will enable them to detect defects and weaknesses
and to assess their importance in relation to the safety and continued use of the equipment.
It is recommended that the competent person is sufficiently independent and impartial to
allow objective decisions to be made.
Non-destructive Testing
Although not considered necessary, some operators choose to carry out non-destructive
testing prior to any re-installation of a critical part.
If this is done, then a dye penetrant test should be used, as any other tests may produce a
false positive.
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