Thank you for quality inputs Mechcolor & Arcpro.

So the final cut off limit for declaring Hot Spot is the Max. Allowable Stresses. What is the impact of internal operating pressure to hot spot material?
Like CS, can we operate material upto 427 C safely at any internal operaing pressure?

Any arbitrary value of temperature of a service material above the critical / allowable limit is considered as 'Hot Spot' and the affected area needs some remedial steps to save it from deterioration / damage.

If the definition is correct, what are the criteria for declaring Critical Limit for hot ...

Really a useful one !

Hmmm.. Terrible

> E-7010 is a non-backing electrode whereas E-7018 must require backing before welding.
> There is less chances of weld porosity with E-7010 as compared to E-7018.

Impressive !

At our plant, we faced a leakage of one of the radiant tubes in primary reformer furnace (Foster Wheeler) a week ago. This was the first tube leakage after the service life of around 18 years (versus the estimated design life of some 12 years). Leaking tube has been isolated successfully thru online ...

Apart with replacement of affected piping, DPT and MT of nearby welds should also be carried out to assess any possible effect on welds.

I could not find this type of software for free. Indeed a great effort!!
Long Live TPS

Thank you for value addition by ben, mechcolor, aterao & piiengineers.