lethal service consideration in pressure vessel design 2

[Devya22]

Dear All,

ASME defines well what to do in "lethal service". In my companies case we are building pressure vessel for chemical process where this chemical will not be in contact with vessel skin/material or any nozzles and mountings. process will conduct in small confined area in the vessel where it is covered by big layer of insulation/ refractory(@20 inches). My question is in this situation does ASME rules for Lethal services is applicable? or Is there any special regulations for this type of case?

Thanks in Advance,

 

[EmmanuelTop]

What is the fluid/substance in question and what are the possible effects on personnel?

Also check these threads:

http://www.eng-tips.com/viewthread.cfm?qid=23360

http://www.eng-tips.com/viewthread.cfm?qid=386610

http://www.eng-tips.com/viewthread.cfm?qid=54439

Dejan IVANOVIC
Process Engineer, MSChE

 

[MJCronin]

More discussion here:

http://www.eng-tips.com/viewthread.cfm?qid=218657

And here:

http://www.eng-tips.com/viewthread.cfm?qid=308653

Obviously, there are some cranky old people on these fora that have a big problem with the ASME methods for assigning lethality responsibility ...

MJCronin
Sr. Process Engineer