EMC Assurance

Sie sind hier: Homepage > Suche

EMC Assurance

Ogunsola, Ade / Mariscotti, Andrea

A railway is a complex engineering system and thus the construction of a new railway infrastructure or the modernisation (refurbishment) of an existing railway infrastructure require a system overview and a consideration of safety. In the context of electromagnetic compatibility, the complexity is due to the close proximity of safety critical systems (and systems performing safety related functions) to electromagnetic disturbances, the majority of which are generated by other railway systems themselves. Electromagnetic interference, whether intentional or not, can cause a wide spectrum of difficulties including momentary, minor inconveniences to system failures in electronic/electrical equipments. In considering EMI risk in railways, it may be necessary to take in account the structural factors in facilities (i.e. control and equipment rooms) with respect to architecture, materials and topography, as this plays a significant role in environmental protection plan. During design and maintenance, significant consideration is given to local weather phenomena, soil, environmental and structural factors based on historical data, as a quantifiable risk. In this book, safety critical systems are railway assets, whose improper function, as influenced by electromagnetic interference, would result in loss of life or injury, while systems performing safety related functions are those that perform a specific function or functions to reduce the risk level to that which is considered tolerable. Reducing the electromagnetic interference (EMI) risk is therefore a major concern in the railway industry.