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Steam relief piping

Glenn_7
Glenn_7 Member Posts: 2
in THE MAIN WALL
Our building has a 6" relief pipe for the low pressure side of our steam station that we have just discovered terminates into the base of a former heavy gauge black iron range hood exhaust duct 47" x 38". The duct spans the height of the building ( 20 stories). Can this duct be considered an acceptable chimney for the application? It does vent to the outside. The situation was discovered when a new tenant on the first floor was trying to recover some floor sf and removed a section of the duct. I'd like to extend the piping back into the shaft. The other option is to run it through the side of the building which would look terrible and be expensive. Help !

Comments

  • Weezbo
    Weezbo Member Posts: 6,232
    Glenn, is the vented section insulated incinerator flanged..

    and bolted sections?if it is it is likely way oversized for what you actually need.
  • Glenn_7
    Glenn_7 Member Posts: 2


    It does have bolted sections. Regarding the size.. the Code states that "safety and relief valve discharge pipes shall be of rigid pipe that is approved for the temperature of the system. The discharge pipe shall be the same diameter as the relief valve outlet." Is there a real reason why this shaft shouldn't work a in essence as a relief pipe?
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