TP – 1301 An Introduction to Periodic Inspection of Steel Hydraulic Structures for Professional Engineers

Description

Existing hydraulic steel structures are subjected to conditions that could cause structural deterioration and premature failure. Periodic inspections on hydraulic steel structures are primarily visual inspections. The inspection procedure should be designed to detect damage, deterioration, or signs of distress to avert any premature failure of the structure and to identify any future maintenance or repair requirements. The periodic inspection should assure that all critical members and connections are fit for service until the next scheduled inspection. Critical members and connections are those structural elements whose failure would render the hydraulic steel structure inoperable. Fitness for service means that the material and fabrication quality are at an appropriate level considering risks and consequences of failure. To be effective, the periodic inspection should be a systematic and complete examination of the entire structure with particular attention given to the critical locations. It should be done while the structure is in use and, to the extent possible, lifted out of the water. Ideally, inspections should be planned to coincide with scheduled de-watering of the structure.