The construction and commision of industrial
projects is completed phase wise. Hence, manufacturing units and pipelines
are kept ready for commissioning before connection to the circuit or system.
Hydrotesting of these assets such as boilers and pipelines is carried out
before commissioning to ensure that there are no leakages in the system and
water from rivers, irrigation canals and wells is used as available.
On several occasions, water is retained in these assets for longer durations
for preservation since slow drying of these assets after hydrotesting will
initiate the process of corrosion and possibilities of water entrapment in
pockets
During the processes of hydro testing and preservation with water, assets
begin to corrode. The corrosion is both Electro-chemical as well as
Microbiologically Induced Corrosion. In addition, deposition of suspended
particles present in the water used also occurs due to stagnancy.
Consequently, severe damage to these assets such pipelines takes place even
before they are put to productive use.
