3 replies to this topic

[SafetyUser]

I'm interested in your opinion about the use of silencers downstream relief valves or blowdown flow orifices (this may arise from noise limitations requirements on work areas).
Do you consider this practice potentially unsafe on this systems eg. might lead to limitation or blockage of discharge?

regards

[JoeWong]

I'm interested in your opinion about the use of silencers downstream relief valves or blowdown flow orifices (this may arise from noise limitations requirements on work areas).
Do you consider this practice potentially unsafe on this systems eg. might lead to limitation or blockage of discharge?

regards

In principle, downstream of PSV shall NOT be equipped with any device which potentially lead to blockage. However, if you can assure that there is NO possibility of silencer blockage, you may do so. One of the my pain "example" in using silencer is the PSV relieving steam.

[SafetyUser]

In principle, downstream of PSV shall NOT be equipped with any device which potentially lead to blockage. However, if you can assure that there is NO possibility of silencer blockage, you may do so. One of the my pain "example" in using silencer is the PSV relieving steam.

Of course I'm assuming these silencers should be designed and maintained by keeping this failure mode well in mind. You can easily find manufacturers for this kind of equipment
Sorry but I'm novel to this matter: what example are you referring to about steam relieving? Do you have any lesson learnt to share?

[JoeWong]

In principle, downstream of PSV shall NOT be equipped with any device which potentially lead to blockage. However, if you can assure that there is NO possibility of silencer blockage, you may do so. One of the my pain "example" in using silencer is the PSV relieving steam.

Of course I'm assuming these silencers should be designed and maintained by keeping this failure mode well in mind. You can easily find manufacturers for this kind of equipment
Sorry but I'm novel to this matter: what example are you referring to about steam relieving? Do you have any lesson learnt to share?

Silencer induce pressure drop. If this is installed as common for multiple PSVs (i.e. 5 x 25%), there is potential lead to all PSV open unnecessarily...