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Pressure Relief Valves

Pressure Relief Valves

Pressure Relief Valves

(OP)
Somewhere in code, I know I've seen it, there is a section on recommended practices for installation of Pressure Relief Valves.  It recommends a certain height for relieving hot liquids and steam/condensate so that when it reaches ground level it no longer is hot enough to cause a safety hazard.  Can anyone help me locate this or give me the rules of thumb?  

I seem to remember that from 160-180*F the relieving heigh was somewhere around 22-24 feet.  I'm looking at relieving 150*F liquid.   

RE: Pressure Relief Valves

The ASME B31 Pressure Piping Code provides the
standards and requirements for pressure relief devices.

David Baird

Sr Controls Designer
EET degree.
Journeyman Electrician.

RE: Pressure Relief Valves

(OP)
Yes.  I have B31.1 and 31.3.  However, I also have the full pressure vessel code.  I can't find the section I'm looking for.  I've read the whole thing, awhile ago.  I remember seeing something on recommended discharges.  I can find all of the discharge information on location, direction and support; but I can't find anything on height.  I'm pretty sure I saw it there or in some other training material and I can't find it.  

RE: Pressure Relief Valves

mrsongs-

Perhaps you are thinking of VIII Div. 1 Appendix M?

jt

RE: Pressure Relief Valves


API 520 Has information


AA

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