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CW System Components

Reclamation and protection of cooling water pumps Including, when required, the mechanical overhaul

ANALYSIS

Client : British Energy Generation

Location: Hartlepool Power Station
Work undertaken: Glass flake lining of ECW pump casing including the casting in of the wear ring lands

BP Strainer

The power stations dotted around our coast line may benefit from the abundant supply of seawater for their main and auxiliary cooling systems, but there is a price to pay. Seawater is a very corrosive medium and without adequate protection the various components, such as pump casings, valve bodies, strainers, water boxes and pipework, which make up the system can quickly become unserviceable through corrosion. Predominately made from cast iron these components are subjected to erosion / corrosion caused by a combination of the silt contained in the seawater and the velocity of the flow. The coatings which have proved most successful in coping with this severe environment are the glass flake filled polyester / vinyl ester systems. These coatings have a proven track record for providing long term corrosion protection and can be used to reclaim badly pitted and graphitised castings. The service life of these coatings is in excess of fifteen years

BP Strainer

This 18" ECW pump casing was refurbished by the RPM Group using Archo-Rigidon 423D, a vinyl ester based glass flake coating. To further extend the coating life rebates have been machined in the half split, inlet & outlet flange faces into which the coating is terminated and finished flat. This gives additional protection in these critical areas by preventing crevice attack down the back of the coating. RPM can also undertake the mechanical overhaul of components, including the manufacture of replacement parts, offering a one stop all inclusive repair service. This we do through a combination of in house and specialist subcontract services.

Why RPM

  • In-house or on-site application
  • Steel or concrete substrates
  • Fast response by skilled, committed experts

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