Shell has shut down one of its oil processing units at its refinery complex in Singapore to investigate a suspected leak in the system, the Maritime and Port Authority of Singapore (MPA) said on Friday. The Shell Energy and Chemicals Park at Pulau Bukom, Singapore, is the supermajor’s only energy and chemicals park in Asia. Shell has informed MPA and the National Environment Agency (NEA) that it shut down one of the oil processing units, which produces refined oil products such as diesel. Water drawn from the sea is used as part of the process…