EI Research report: Flow performance testing of vapour recovery systems on petroleum road tankers

Document options


EI Technical Partners get free access to publications. You will need to Login or Register here

Dear customer,

Please note that the EI publishing department has moved to a new print supplier for 2021. The option to purchase Hard Copies of our publications has been suspended until the New Year, when we will be making select areas of the catalogue available again. Until then, we will continue to offer PDF versions of our books. Please email pubs@energyinst.org if you have any queries.

Kind regards,
EI Publications

  • Published: April 2017
  • REF/ISBN: 9780852938300
  • Edition: 1st
  • Status: Current

This publication is available to download for free by registering/logging in to this site.

Flow performance testing coverThe VOC (Vapour Recovery) Directive lays down technical requirements for the design of road tankers with respect to loading rates versus the flow capacity of their vapour manifold which returns the displaced vapour to a terminal’s vapour recovery unit.

Road tankers are required by the VOC directive to display a plate giving the maximum number of compartments that may be filled simultaneously without any vapour being expelled to atmosphere; however, no test procedure or protocol to determine that number is defined.

During 2015 the Energy Institute (EI) commissioned Emco Wheaton to carry out flow performance tests on the vapour recovery systems of a number of semi-trailer tanks of different design and manufacture, with a view to determining if there could be some simple guidelines prepared that would allow the number of arms permitted to load a tanker simultaneously to be determined from visual inspection and/or drawing analysis rather than by performing physical tests every time. This report is a summary of the results arising from the tests.

The testing was carried out following the procedures laid out in the EI publication – Testing of vapour containment on petroleum road tankers 2001 and Technical Report CEN/TR 15120:2013 annex B. The findings will feed into the EI guidance Petroleum road tanker design and construction.

Members Benefits

Are you an EI Member? If yes, register/log in now to ensure you receive free access or discounts to EI publications.

If you are not a Member, why not join today and receive all of the benefits of EI Membership? EI Members are entitled to a 25% discount on most EI publications.