FRP Lining Procedure &
Quality Control

A SIGN TO DESIGN AS YOU DESIRE


  • 1-Safety:

    The tank to be lined should be thoroughly emptied and clean.

    Vapor in the tank should be purged to reduce explosion and inhalation hazards.

    2-Surface preparation:

    -Concrete:

    Holes in the floor greater than an inch diameter are repaired by welding metal plates over them and patched by putty. Check the moisture contents with moisture meter, to make sure an ideal moisture 4% – 10% Max.

    -Metal:

    The surface must be free of scale, oil and grease. Sand blast to near white color.

    3-Prime the clean surface

    The metal and concrete surfaces are protected by brushing on a epoxy resin to increase bonding strength between FRP to metal and concrete.

    4-Apply The Laminate

    All areas to be lined with Glass Mat and Polyester or vinyl ester resin as specified. The standard of glass is E glass that would be reinforcement layer. The resin and glass are to be worked down with special grooved roller and brushes in order to minimize the surface free of pin holes and air pockets.

    5-Apply the Corrosion barrier

    After apply the laminate as reinforcement layer, surfacing veil as the corrosion barrier should be applied with polyester or vinyl ester as specified.

    6-Spark Test

    Before applying the finish coat, all surface to be inspected to found any pin holes with spark test machine. Any pinholes detected and found, would be repaired at this time.

    7-Finish Coating & Hardness Test

    Polyester and vinyl ester finishing coating would be brushed on the surface, mix the resin with wax additive and pigment color as specified. Make sure the hardness surface with barcol hardness test machine.