I am facing some problems while working in various matters and the following questions are related to that problem:
1. What is the expected life of polyurethane seal of floating roof storage tank?
2. What is the expected life of fin tube of overhead air cooler of Atmospheric distillation unit?
3. If caustic dosing suspended due to some unavoidable reasons is it possible to reduce overhead corrosion (caused by hydrochloric acid) by increasing amount of neutralizer like ammonia or amine at overhead of the Atmospheric distillation unit?
Waiting eagerly to know your opinion and reply.
Thanks.



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