Neccessity of Silencer for PSV on Boiler SteamDrum

[farzam]

I have a question about the neccessity of silencer for PSV on boilers,i want to know about any Specifications and standards for this matter.
please let me know your idea.

Thank you

 

[hadams417]

OSHA standards call for specific noise levels, most of which are below 90 dB(A) for an 8 hour work day. However, it doesnt seem as though this would be applicable to your situation with PSV. You may want to investigate IEC 60534-8-3. This is a standard for predicting Aerodynamic noise produced by control valves, and may be modified to be made applicable to a PSV on a boiler. Hope this information helps.