人孔(kong)(kong)分為緊急泄壓人孔(kong)(kong)、防爆阻火呼吸人孔(kong)(kong)、罐頂(ding)人孔(kong)(kong)、罐壁人孔(kong)(kong)和帶芯人孔(kong)(kong)

人孔已有(you)成型(xing)產品，直徑通(tong)常為(wei)(wei)600mm。人孔中心距地(di)板一般為(wei)(wei)750mm。便于工(gong)作人員(yuan)在安(an)裝、清(qing)洗、維護時進出油罐或通(tong)風(feng)。

非(fei)金屬(shu)油罐(guan)的(de)(de)人(ren)孔(kong)(kong)(kong)設在罐(guan)頂(ding)上(shang)，金屬(shu)油罐(guan)的(de)(de)人(ren)孔(kong)(kong)(kong)設在罐(guan)壁***下(xia)圈(quan)板上(shang)。大都為(wei)直徑600mm的(de)(de)圓孔(kong)(kong)(kong)，其中心距底板750mm，為(wei)油罐(guan)清洗(xi)或維修(xiu)人(ren)員進出(chu)油罐(guan)用，又稱作道門。檢修(xiu)清理(li)油罐(guan)時刻利用人(ren)孔(kong)(kong)(kong)進行(xing)采光(guang)和通風。立式油罐(guan)的(de)(de)容(rong)量在5000m3以下(xia)時設1~2個(ge)(ge)(ge)人(ren)孔(kong)(kong)(kong)，5000m3以上(shang)的(de)(de)設2個(ge)(ge)(ge)人(ren)孔(kong)(kong)(kong)。人(ren)孔(kong)(kong)(kong)的(de)(de)安裝應(ying)與進出(chu)油管(guan)線相(xiang)隔不大于90°。當只(zhi)設一個(ge)(ge)(ge)人(ren)孔(kong)(kong)(kong)時，應(ying)將其置于罐(guan)頂(ding)透光(guang)孔(kong)(kong)(kong)的(de)(de)對面;當設2個(ge)(ge)(ge)人(ren)孔(kong)(kong)(kong)時，其中一個(ge)(ge)(ge)設在透光(guang)孔(kong)(kong)(kong)的(de)(de)對面，另一個(ge)(ge)(ge)應(ying)至少與第(di) 一個(ge)(ge)(ge)人(ren)孔(kong)(kong)(kong)相(xiang)隔90°。

人(ren)孔應有一個設在進(jin)出油管(guan)右側附(fu)近(jin)，并(bing)盡量(liang)使人(ren)孔正對罐室密閉門，以便人(ren)員進(jin)出、維(wei)修油罐和通風接(jie)管(guan)用。

由于人孔(kong)(kong)安裝在油罐的(de)下(xia)層體圈上，防(fang)滲漏就顯(xian)得特(te)別重(zhong)要(yao)。要(yao)求兩法(fa)蘭(lan)結合面(mian)必須保證其(qi)平直度(du)，無飄(piao)扭(niu)現象(xiang)。加強板(ban)(ban)和(he)法(fa)蘭(lan)應盡量在整塊鋼板(ban)(ban)上切(qie)割而(er)不(bu)拼接(jie)。法(fa)蘭(lan)和(he)蓋板(ban)(ban)上加工(gong)有密封(feng)圈，在施工(gong)中要(yao)特(te)別注意保護。密封(feng)用3mm厚(hou)石棉橡膠(jiao)墊(dian)片，不(bu)允(yun)許(xu)有折裂。安裝人孔(kong)(kong)蓋板(ban)(ban)上緊螺栓時，要(yao)成(cheng)對(dui)角(jiao)均勻用力，以防(fang)孔(kong)(kong)蓋變形。