Thermacote repairing Nitrile Rubber Insulation

on a Gas Production Vessel – October 2003

 

 

Click here to open a printable

version of the whole Thermocote

trial on a GP3

 

Problem

  • Nitrile Rubber Insulation was fully saturated with water and creating a significant CUI problem.

  • Replacement of the lining required temperature to be dropped from >80oC  to <40oC this would require a process shut down.

Solution

 A system of RL 500 PF and Thermacote RA 1000T was specified because both can be applied without a process shut down:

  • RL 500 PF is a moisture  and surface tolerant primer that requires little surface preparation.

  • Thermacote RA 1000T can be applied at temperature up to 150o C and would not need a process shut during application.

Thermacote Specification

  • Water blast to remove corrosion products.

  • Apply 1 coat Epochem RL500PF (2 pack Zn-MIO epoxy) to wet substrate

  • Allow to part cure.

  • Apply Thermacote insulation in 10 – 15mm thick slabs made on site using a light weight flexible moulding process.

  • Temperature fall from 80 – 85oC to 35 – 40oC in <5 minutes.

  • Glue nitrile rubber to Thermacote.

   

   

  

   

  

   

  

   

  

   

   

   

 

 

 

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