Controlling stray current

摘要

Railway structures are at risk from stray current interference inducing accelerated corrosion. Stray currents may arise from the proximity of unbonded structures to cathodic protection systems, leakage from overhead lines or from associated electrical facilities, such as signalling. If unchecked, the effects can be devastating. They can also be managed through efficient design and management methods. Here, James A. Phipps, Paul Lambert, Mott MacDonald Ltd, and Graeme Jones, C-Probe Technologies Ltd, recount two instances where novel approaches mixed with knowledgeable management procedures provided solutions and information to give peace of mind to important structural assets.