Page 222 - Pipeline Pigging Technology
P. 222

Ethylene pipeline cleaning


     pressure  drops,  friction  factor  comparison,  and  roughness  calculations.
     Removable   test  spool  pieces  will  be  installed  on  the  pipeline  to  further
     monitor the deposition  rate. A long-term objective is to better understand the
     polymer  formation mechanism.

        Future programmes


        With this project's  successful conclusion  and the  restoration  of  pipeline
     capacity,  AGEC  will  be  investigating  a  future  on-line  ethylene  cleaning
     programme to maintain pipeline capacity.  Corrosion  rate predictions  deter-
     mined by Novacorp are presently  being  analyzed to develop  an  inspection
     programme that will ensure a continued  high level of integrity is maintained.

        Safety and public relations



        Great efforts  were  made on this project  to provide  a safe work  environ-
     ment and promote   good public  relations.
        One  minor  recordable  injury  resulted  during  the  60,000  man-hours  of
     work, and two public complaints were  received.



        ACKNOWLEDGEMENTS


        Novacorp   International  Consulting  Inc  wishes  to  acknowledge,  with
     thanks, the help and co-operation afforded  by the  following:

           John  Duncan, P.Eng.
           Lucie Zillinger, P.Eng.


















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