This on-line database contains a detailed overview of all systems now operating, under construction, or in advanced planning. We of OPL have confined ourselves to the known facts, drawn where at all possible from the relevant operator and/or contractors. Most of the entries in this database have been verified by them. It should be clear however that "verified" does not mean "guaranteed" and no representation can be made as to the ultimate accuracy of the details given in this database.

Users guide

The on-line search capabilities make it very easy for you to select MPS's that match your selection arguments. Just follow the steps below:

• Use the pulldown lists or enter a string of characters in the free text search box to select your search arguments.
  
• Click on search.
  
• Click on the screen image in the column SHOW to reveal its details including images and drawings (if available)
  
• Click on a black and white drawing to reveal a more detailed picture of the MPS.