When to apply "lethal service"?

[thestephan]

Dear all,

ASME defines very well what to do in case of "lethal service". Unfortunately, there is no guideline under which conditions (substances, concentration, temperature etc.) the requirement of "lethal service" have to be used.

Questions:
Are there government regulation when to apply lethal service?
Is it up to engineers, to decide which equipment requires "lethal service"?

 

[DeltaCascade]

This was also posted in chemjical plant design and ops...

 

I am looking for the same information and am experiencing the same difficulties. Did you find any answers or references?

 

[TD2K]

thread794-17433

Also, do a keyword search for 'lethal service'