Fibreglass Coating

Internal joint and seam preparation for cooling tower fibreglass coating solutions is a critical first step, involving meticulous cleaning and mechanical abrasion or sandblasting of surfaces to remove contaminants and create an optimal profile for adhesion.

This ensures a smooth, monolithic surface that protects the underlying structure from corrosion and deterioration, extending the coating’s longevity and effectiveness.

Leaking BAC legs originate from the upper casing joints. When the sealant at these joints fails, water flows into the hollow legs and travels down to the base, where it eventually leaks out.

Repairing leaking legs and basins on BAC, RCT, and PCT cooling towers involves a structured process with several crucial steps.

The process begins with removing the front access panel, followed by the removal of the fill pack and drift eliminators. The internal seams and joints are then thoroughly cleaned, and the surfaces are prepared using mechanical abrasive tools.

This is followed by the application of the RepelCoat coating system, which includes a flexible primer and a chemical-resistant topcoat. The coating is also designed to seal cracks and penetrations, ensuring the cooling tower operates efficiently and remains leak-free for many years to come.

Corroded BAC cooling tower steel legs pose a serious structural risk. If the internal steel leg (spigot) corrodes out, the fibreglass cooling tower could fail and collapse. The weight of the heavy fan, motor, and motor mount of top of the cooling tower could snap the fibreglass legs off if the steel internal spigot fails.

Beyond the immediate danger, the ongoing water and chemical leaks decrease the cooling efficiency, it reduces the effectiveness of water treatment chemicals, and it pollutes the environment.

Preparation of interior seams and joints for coating in a fibreglass cooling tower is a crucial step to ensure the longevity and effectiveness of the protective coating system.

This involves meticulously cleaning the seams and joints to remove all contaminants like scale, and old sealants. This is followed by abrasive grinding to create an ideal surface profile for strong adhesion of the RepelCoat coating system.

Proper preparation of these critical areas prevents premature coating failure and protects the tower’s structural integrity.

Stopping leaks from a cooling tower’s seams, joints, and legs is paramount to maintaining its efficiency, structural integrity, and biological safety. This requires a comprehensive approach that includes thorough surface cleaning, proper surface preparation, and the application of the specialised RepelCoat coating system to achieve a watertight result.

Effectively addressing these leaks prevents corrosion of the steel spigots, stops water loss, ensures water treatment chemicals are not released into the environment, and extends the cooling tower’s operational lifespan.

DO NOT SEAL LEAKING LEGS AT THE BASE!

Simply sealing the legs at the base where the water exits can be catastrophic. This causes the legs to fill with water, creating a dead leg. Bacteria can then breed, potentially leading to a Legionnaires’ disease outbreak. A dead leg within the BAC corner support legs also accelerates corrosion of the steel leg spigots, ultimately leading to cooling tower failure.