BIG UPGRADE SLATED AT SHELL'S PERNIS REFINERY

Shell Nederland Raffinaderij BV plans a $2 billion upgrade of the Pernis refinery near Rotterdam. A hydrocracker and oil gasification plant valued at $1.5 billion are to go on stream in 1997 to modify the plant's product mix, while $500 million will be spent during 10 years mainly on emissions control. "These investments will lead to a partly renovated refinery geared to cope with customer demand for cleaner products, while continuing to reduce emissions to the atmosphere and surface