Silencer in boiler

[coolniks37]

Whether silencer in boiler vent piping to be considered as a pressure part component?
If so, which calculation is to be performed as per which code?
What is ASME disposition, regarding same?

 

[macmet]

It is not clear to me where exactly your silencer is. I work for a HRSG company and we have silencers on our exhaust piping from SRVs as well as from some of our pressure control vent valves. In our systems these are not considered pressure parts, but are designed to withstand backpressure depending on the system.

 

[georgeverghese]

Think the safety concern posed here also is whether a silencer in RV exit piping is acceptable.
Typical oil / gas industry position would be
(a) convoluted internals in an RV exit path could get blocked over time with solids, corrosion products from upstream with slightly leaking SRVs.
(b) are the materials of construction completely corrosion resistant ?
(c) could the internals get sheared off in a high velocity stream, blocking the exit path (has happened before with even simpler internals on HP flare knockout drums)? (due to loose QA during fabrication)
(d) is there a backup exit path which bypasses the silencer in case it gets blocked? If so, how is this configured?