Appendix F. Civil Engineering Report Part 2

                                                   SPEL PURACEPTORTM

            PuraceptorsTM should be inspected at three - six - or twelve monthly intervals depending on site conditions, to determine the depth of
            retained pollutants and silt in both chambers and the correct operating of the ACD (automatic closure device). When the depth of the
            oil/fuel retained has reached the predetermined design level, (approx. 50mm) or after a spill it should be cleaned out.

     1      CONTAINMENT CHAMBER: Where silt, sediments, sludge, gross pollutants settle out and light liquids are retained. The auto closure
            device operates in its retaining tube next to the oil alert sensor probe.

     2      COALESCER CHAMBER: Where light liquids separation is enhanced prior to discharge and where the coalescer unit is incorporated,
            the coalescer should be removed and cleaned in accordance with the requirements set out in the coalescer data sheet.




      F                 B                                  C                                                              D                      A                           E




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MAINTENANCE PROCEDURE
 A Coalescer unit C Sucking out oil/fuel and silt                                                                  E Re-insert coalescer unit and ACD
  Use the lifting handle or the        Suck off the retained oil from both chambers of the PuraceptorTM and then   Re-insert the foam insert into the stainless steel coalescer
  chain and lift the coalescer         the silt deposited on the bottom, leaving sufficient water to ensure the    unit and re-insert the coalescer unit into the PuraceptorTM
  unit out of the tank and place       (auto closure device) ACD remains floating.                                 as provided with the SPEL lifting/location/locking system.
  it near the PuraceptorTM. In a
  retained area so pollutants do
                                       D Sucking out complete contents (if necessary)                              Partially fill the PuraceptorTM with clean water (if necessary)
                                       If the quantity of pollutants exceeds recommended level, the                to ensure the ACD when re-inserted remains floating.
  not escape.
                                       complete contents of the PuraceptorTM may need to be removed.               Re-insert the ACD.
  B Cleaning foam insert               After sucking out completely, remove the ACD. Using a pole with
                                                                                                                   Finally check the ACD is floating after it
  Remove foam insert and wash          a hook, lift out the ACD using the lifting eye on the float, if fitted.
                                                                                                                   has been replaced to safeguard against its removal by
  with normal water pressure                                                                                       unauthorised persons, unless depth of tank precludes doing
  ensuring the dirty water runs                                                                                    so from ground level.
  into the PuraceptorTM.
                                                                                                                   F SPEL automatic alarm/monitoring system
                                                                                                                   The SPEL automatic alarm/monitoring system probe should
Important note:                                                                                                    be lifted out of the probe protection tube, wiped clean and
When cleaning out, ensure both chambers are sucked out equally starting with the first chamber and                 re-inserted. the system should now be reset according to
then the second chamber and back again. Ensuring even water pressure against baffle wall.                          instructions.




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