Probably one for the texan's
(JR Ewing need not reply!)

I have a H2S sour gas line from a Crude oil refinery which is being piped to the flare header.
This line is heat traced to 100c.

2 questions:

1:The pipework is Carbon steel sch 160.
What does H2S do to this Pipework and how do i asses its suitabillty to carry H2S?

2:Are there any special considerations in the analysis of this line? although the temperature is 'relativly' low, the runs are long and apparntly H2S is leathal.

Advice appreciated.

pps.
This line also has NACE requirements.

From stress analysis point of view, nothing special except support design and corrosion control. For tailing gas system, there is a typical support system to avoid SSCC(sulfide stress corrosion cracking). However, there will be more things to pay attentions. So, please let us know ;
-Is this Tail Gas ? which process/or plant ?
-Pipe size ? Pipe material A106-B means pipe size is small(24” or smaller). Generally tail gas line is large size.
-how much wet H2S 50 ppm ?
-it must be sloped line at the highest level of piperack