Turbine Blade Corrosion Experts
Experts in Corrosion, Metallurgy and Engineering
 POWER CORROSION (CONSULTANTS) LTD
Pitted Turbine Blades
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  POWER CORROSION
  (CONSULTANTS) LTD.


   Ashby de la Zouch
   Leicestershire
    United Kingdom


   Email: enquiries@powerccl.co.uk          
   Tel: +44(0)1530 412418
 

   Web:  www.powerccl.co.uk
 
 
   Last Updated: 09-Mar-17

      
Pitted Turbine Blades
Turbine blade cracking

Pitting

Steam chemistry

The pitting of these high pressure turbine blades and the shroud was caused by a leaking isolation valve
combined with incorrect steam chemistry. We investigated this  problem and recommended changes to protect the steam turbines, condensers and pipework.
Tubine Blade Corrosion Turbine blade corrosion

Turbine disc pitting

Acidic Condensate

The corrosion of the turbine blade roots and cover band was caused by incorrect steam chemistry.
We investigated this  problem and recommended changes to protect the steam turbines.
 
Fouled Turbine Blades and Discs
Turbine blade fouling

Boiler carryover

Silica in steam
We investigated the cause of chemical deposits/fouling on these blades and discs. We then recommended changes in plant operation to avoid a repetition and its consequences.
Erosion Corrosion on Turbine Blade Erosion-corrosion

Material selection

Low pH

The low alloy steel components in this low pressure turbine sufferred scalloping and rusting. We investigated this incident and discovered the erosion-corrosion being caused by the passage of high velocity wet steam. The chemistry of the wet steam had been adversely affected by the plant operators making a small change to the boiler water chemistry.
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