Aiming for no stray current on LUAS extension

We have all experienced situations where something important has become an afterthought, and consequently it has led to problems. In large scale projects involving a range of disciplines the chance of something being overlooked is always more of a threat. In light rail projects an area that is often ignored or passed around like the proverbial hot potato is stray current management. Stray currents are easy to define (any current which does not follow the intended path) but terribly difficult to resolve. When current follows other paths to ground they can cause horrendous damage to any metallic item with which it comes into contact, such as underground services or the foundations of surrounding structures; when the current finds these metallic items they cause corrosion on a massive scale. It is worth considering that stray currents can travel for significant distances underground and still cause awful damage. Fortunately the joint venture for the C100 extension will not be caught out on stray current management on this project; they recognised the threats and contacted JMI to assist. JMI engineers travelled to Dublin to undertake

by Taryn Caleno

July 8th 2008

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