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.
