Thanks!
Erosion and corrosion of the pipe wall within the plant is periodically checked by radiographs for damage and wear.

The quality of crude is good so the acidity is low and therefore Carbon steel pipework has been used from day one.

Please advise on this:
It seams that the existing pipework/system we are tying into will probably have some wear due to it being there from 1960. Radiographs of key wear points are being taken and i can reduce the pipe wall thickness value in Caesar to match.

However, i am worried about the heat exchangers.
Is wear also problem with these? Should i de-value the nozzle allowables in line with the reduction in pipe wall thickness?.
The stiffness/strength ratio of the nozzle wall will be difficult to judge.

My solution is to model the system in a worst case senario with minimum wall thichnes's and to
stay well within the allowables given.

Comments appreciated.