圖2.97 可燃氣體排氣筒(tong)或放空管高度(du)示(shi)意圖注：陰影部分為平臺或建筑(zhu)物(wu)的設置(zhi)范圍

 對有毒(du)、可燃(ran)介質應(ying)按項目規定(ding)引至指(zhi)定(ding)的收(shou)集系(xi)統(tong)、火炬系(xi)統(tong)或放(fang)空(kong)場所。當幾(ji)根(gen)支管(guan)(guan)(guan)(guan)合并成一根(gen)集合管(guan)(guan)(guan)(guan)向總(zong)管(guan)(guan)(guan)(guan)排放(fang)時，集合管(guan)(guan)(guan)(guan)的截面積(ji)應(ying)不小(xiao)于幾(ji)根(gen)支管(guan)(guan)(guan)(guan)截面積(ji)之和。排放(fang)閥(fa)出(chu)口管(guan)(guan)(guan)(guan)道不得小(xiao)于閥(fa)門出(chu)口的直徑，并由工(gong)藝系(xi)統(tong)專業根(gen)據實際配管(guan)(guan)(guan)(guan)核算放(fang)空(kong)、放(fang)凈的壓力(li)降，使之適應(ying)泄放(fang)系(xi)統(tong)的要求。