ABB-Substation-Condition-Monitoring-Schedule(3)

Painting and Galvanizing (Applicable to all equipments and systems)Depending on geographical location, local environmental condition, periodic inspection of painting and galvanizing condition of structures, panels, equipments etc. is required. Inspect for paint condition, damage paint, chalking effect, rusting etc. If any damage observed, do necessary repaint or repair work.

Grounding System

Check for loose connections of all ground connections at equipments, structures, panels, other equipments etc. Check for any sparking marks at termination or joint. Observe the condition of any flexible braid type connections for damage. Tighten the connections, clean the joints and replaced if found damage. Earth pits should be kept wet so as to have low resistance. Measure overall ground grid resistance. The Value obtained should be comparable with initially measured values or designed values.Structure

Inspect all the structures for loose or missing bolts or nuts. Observe any damage paint/ galvanizing or signs of corrosion. Inspect for deterioration, bending, buckling and cracking.

Civil work-Foundation and Control Room

Inspect for sings of settlement, cracks, spalling, honeycombing, exposed reinforcing steel, and anchor bolt corrosion. Check for break/ missed cable trench cover. Inspect for any crack/ leakages in control room and water tank. Check for proper functioning of sump pump and drainage system.