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
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Sun Wee