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Prevention of corrosion of air conditioning systems.
A treatment to prevent corrosion of the air conditioning system in a building consisting of 10 floors was executed successfully - which resulted in a unique and novel application.



Buildings
(1A) Initial Investigation:
     Severe general corrosion of the entire piping
     was noticeable.


Buildings
(1B) Initial Investigation


Buildings
(2A) Identified causes of the Problem:
      Absence of vapour shield below brackets /
      clamps as well as damaged shield & insulation.


Buildings
(2B) Identified causes of the Problem:

Solution:
1.

2.

A section of pipe work was treated according to the recommended procedure.
Corrosion coupons were inserted into the insulation in the treated section
and also, as a control, into and untreated section.


Results obtained after 1 month:
1 Avarage corrosion rate in treated section =
2 Avarage corrosion rate in untreated section =
0.0398 mpy
0.2115 mpy
3 The corrosion rate in the untreated section was 431 %
   greater than in the treated section!


Buildings
(3A) Condition of the corrosion coupons which were
      removed from the portion of pipe that was
      treated with the corrosion inhibitor.


Buildings
(3B) Condition of the corrosion coupons which were
      removed from the portion of pipe that was
      not treated with the corrosion inhibitor.


Buildings
(4) Condition of the untreated pipe and thermal
     insulation where the corroded corrosion coupon
     sample was removed from.

Summary:

Project was successfully completed after 6 months, 34km of piping was treated with
2 200kg of vapour corrosion inhibitor injected. Most of the work was carried out after hours and over week-ends.


The following results were noticeable :
*
*
*
*
An effective reduction of corrosion of the pipe work.
A significant increase in the life span of the system.
A substantial cost saving for the client.
Minimal disruption to the normal business activities of the specific client.


Also see the following case studies:

Chemical & Petrochemical and other
Military
Vehicle & Component Manufacturers







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