(Adds details)
LONDON, March 3 (Reuters) - Shell's 400,000 barrel per dayPernis refinery in the Netherlands, one of Europe's largest, hasbegun planned maintenance that will close large parts of theplant until early May, Shell's Dutch language website said.
The work, will involve one million man-hours of work byShell employees and contractors, including an extra 2,000 staffa translation of the notice dated March 1 said.
A source said a crude distillation unit and a hydro crackerunit were down for maintenance. Reuters data shows there are twocrude distillation units amounting to 200,000 bpd each. (Reporting by Himanshu Ojha, editing by David Evans)