Remote Videoscope Inspection (RVI)
How the RVI be useful in the lighting column inspection?
Steel lighting column succumbs to corrosion due to unfavourable climatic and environmental conditions. Esthetical grouting over the flange base and bolts/nuts could make it worse as water trapped inside.
Magnetic Particle Testing can detect crack and defects on surface and sub-surface, but not internal corrosion. Undetected internal corrosion of a steel lighting column can be catastrophic as it can topple and cause serious damages and injuries.