L&T on Friday appointed Subramanian Sarma as non-executive director, and chief executive officer (CEO) and managing director (MD) of its wholly-owned subsidiary L&T Hydrocarbon, spun into a separate company in 2013 and to be listed in 2016.The hydrocarbon segment recorded a revenue of Rs 2,207 crore in the first quarter ended June 30 registering a growth of 42%.