The reliability of a structure depends on the quality of the materials and construction, and the adequacy of maintenance provided after installation. Future has a maintenance program, which involves planned inspections and repairs during the life of the structure.
The intervals needed for inspection need to be in tune with the operational environment and structural / service function needs of the structure. The interval between maintenance inspections will depend on the following factors:
- Corrosion potential of the environment and the degree of protection required for maintenance of design reliability
- Importance of the structure to its service
- Severity of local conditions
- Sensitivity to structural response
- Grounding conditions
Future recommends that an interval between inspections should be between one and three years according to the relative importance of the above factors.