|In any industry, where
production is undoubtedly the most important part of the operation, it is usually
difficult to effectively maintain all the supporting structures, - or the equipments - in
view of the production deadlines / targets to be achieved. These production deadlines /
targets usually result in lesser shut-down periods, resulting in only a few of the
critical equipments being checked / maintained, but not the structures. These structures
could easily get distressed, due to several reasons like mechanical vibrations of
machinery, resonance, fatigue, thermal stress corrosion due to seepage of acid,
atmospheric corrosion, etc.
this type of distress is difficult to observe, since these occur over a long time, and is
not easily visible at a glance. Considering the fact that several hundred crore rupees
worth of production equipments are supported on these structures, it is extremely
important that these structures be in a healthy state with adequate factor of safety. The
failure, and ultimate collapse of any structure would be extremely disastrous for any
industry, particularly due to loss of life, and production.
with these eventualities in mind that throughout the world the industries are getting the
safety survey of their plants done through specialised agencies, and this system has been
catching up in India also.
UNITED has done the structural safety survey of Fertiliser, and chemical plants which were
subjected to acidic corrosion, and also pyro-metallurgical plants subjected to structural
damage due to heat, and mechanical vibrations. For each of these safety surveys we have
suggested remedial measures which were rigidly followed, resulting in restoration of
complete strength in all the damaged structures, and all these plants are now running
these remedial measures are so designed as to restore the structural strength in running
plant conditions without the need of a shutdown. The cost-benefit of this system is
enormous because in addition to the structures being rejuvenated & safe enough to
withstand all loads, the repairs / revamping are done in running plant conditions without
the need of an unscheduled shutdown, which would otherwise result in a loss of production.