Abstract :
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Corrosion costs nearly $4 Trillion worldwide
each year. April 24, 2012 has been dedicated to raising awareness about what can be done to prevent the impact of corrosion on people, infrastructure, and the environment. Though Codes and standards on corrosion exist on the basis of physical parameters,there is little focus on performance criteria. .The US is
losing more than $276 billion and India Rs 1 Lakh crore per annum on account of corrosion. The annual loss due
to corrosion can be compared with that of other natural
calamities like fire, floods, hurricanes, tornadoes,
earthquakes and cyclones; only its impact is indirect.
Corrosion destroys the objects made up of metals and
their alloys but the modern world can not afford
without the use of these materials. Around 80 per cent
of the unscheduled shutdowns and breakdowns in
industries are due to corrosion. Corrosion causes plant
shut downs, waste of valuable resources, loss or
contamination of products, reduction in efficiency and
costly maintenance. Corrosion solutions are highly
customized as standards must be created on the basis of
prevailing local conditions as India is a tropical country
and environment and climatic conditions differ from
region to region. If this corrosion cannot be eliminated
completely, industries can ensure the prevention at the
design stage. Improved technology and awareness can
only come through consistent research and development
activities. While this has become a reality in some
industries such as nuclear power, refineries, space,
railways, shipping and defense, most medium and
small-scale industries do not take up corrosion issues
seriously or are simply not aware of them. Additionally,
corrosion may lead to loss of metals and their strength
which in turn can cause serious accidents, loss of
manpower and human lives. Out of the total loss due to
corrosion, 25 per cent of loss can be easily saved with
pro-active approach and protecting the system by
appl
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