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TOBIN Consulting Engineers were appointed in 2004 as Client’s Representative for the Stage 5 expansion of the Leixlip Water Treatment Plant.  The current expansion, with a capital cost of approximately €30 million, includes for the construction of a state of the art “stand-alone” facility, on a site adjacent to the existing treatment infrastructure with a capacity of 80Ml/d plant which, when combined with the existing facilities (175Mld), will bring the total potential peak through the capacity of the entire plant to 225Ml/d.  This total capacity will serve up to one-third plant of the third demand in the Greater Dublin Region, and it effectively provides the planning headroom for the Shannon Project.

The new Stand-Alone Water Treatment Plant was constructed within the curtilage of a new building with overall dimensions of 90m x 43m and an overall height of 10m with a separate an annex (12m x 12m) used to house a number of nonprocess elements. The building houses the following elements of the water treatment plant expansion.

  • Inlet Pumping Station and Flash Mixer
  • 4 No. Sedimentation Tanks;
  • 6 No. Filters;
  • Plant Room (Blowers and Air compressors);
  • Workshop and Store;
  • Control Room;
  • Fluoridation Room and Bulk Storage Room;
  • Disinfection Process Room;
  • Alum Tanks, Alum / Acid Dosing Room & Alum Delivery Room;
  • Polyelectrolyte Dosing Room;
  • Activated Carbon Dosing Room (relocated from behind existing administration block);
  • ESB Substation and Meter Room;
  • SCADA & Mimic Control Room;
  • Canteen;
  • Toilets/Showers
  • Office

The fabric of the buildings was designed to present a high-quality appearance and a high degree of integration where the selection of the materials was of paramount importance in ensuring a long design life with the mal necessity for significant maintenance to the fabric or structure of the building all with a view of having a design life of not less than 50 years.  The proposed Main Treatment Building was constructed using a steel frame with a wall and roof cladding system with the following finishes: –

  • Metal cladding with grey tone finishes and colours backed with insulation and metal linear sheets on blockwork and steel structure;
  • Selected curtain wall glazing system (with backlighting to northern elevation);
  • Metal capping with grey-toned finishes and colours and
  • Metal louvres with grey-toned finishes and colours.

The contract for the construction stage was signed in December 2011.  Works are now substantially complete.

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Galway Harbour Project