<Tr> <Th_colspan="2"> History </Th> </Tr> <Tr> <Th> Previous names </Th> <Td> South Indian Railway </Td> </Tr> <P> Tirusulam railway station is one of the railway stations of the Chennai Beach--Chengalpattu section of the Chennai Suburban Railway Network . It serves the neighbourhood of Tirusulam, a suburb of Chennai where the city's airport is located . It is located at a distance of 21 km from Chennai Beach terminus and is situated on the GST Road across the airport, with an elevation of 20 m above sea level . </P> <P> The station lies in the Chennai Beach--Tambaram section of the Chennai Suburban Railway Network, the first suburban section of the city . With the completion of track - lying work in March 1931, which began in 1928, the suburban services were started on 11 May 1931 between Beach and Tambaram, and was electrified on 15 November 1931, with the first MG EMU services running on 1.5 kV DC . The section was converted to 25 kV AC traction on 15 January 1967 . </P>

Which is the nearest railway station from chennai airport