Industry
Power Generation
Date
April 2018
Substrate
Cast Iron Column Pump
Products
Internals, Chem-tect™ RB 364 a glass flake filled vinyl ester. Ceram-chem™ RP 500 a ceramic filled epoxy.
Externals, Epo-chem™ RS 500P a surface and moisture tolerant primer. Epo-chem™ RA 500M a glass flake filled epoxy.
Environment
Ambient Salt Water
Challenge
Chemcote were brought in to carry out pump refurbishment after catastrophic failure of bearing causing the impeller to wear through the casing of the column pump
Chemco’s Solution
Refurbish pump lining to extend service life using glass flake filled coatings, then top coated using RP 500 to improve fluid flow efficiency.
Scope
Abrasive blast to AS.1627.4 to class 2.5
Masking and protection of critical tolerances and bush area on flange.
Pit filled to allow smooth transition and prevent coating defects
Sand smooth where necessary & application of RB364 to 1,000µm
Internal & external holiday testing to ensure coating continuity using the required voltage to suit the dry film thickness.
Application of the top coat Ceram-chem™ RP 500
Results
Improved corrosion resistance and fluid flow efficiency through the quality assurance process employed by Chemco.