Oil major Total SA (TOT) plans a maintenance turnaround at its 153,000 barrel-a-day Vlissingen refinery starting May 18 and lasting for around a month, a spokesman for the company said Monday.

Total could begin the process of restarting closed units around June 21, he said.

It takes several days to stop refinery units and several days to start them up again, the spokesman noted.

-By Adam Mitchell, Dow Jones Newswires, +33 1 40171756; adam.mitchell@dowjones.com