人(ren)孔(kong)(kong)分(fen)為緊急泄壓(ya)人(ren)孔(kong)(kong)、防爆阻(zu)火呼吸人(ren)孔(kong)(kong)、罐頂人(ren)孔(kong)(kong)、罐壁人(ren)孔(kong)(kong)和帶芯人(ren)孔(kong)(kong)

人(ren)(ren)孔已(yi)有成(cheng)型產品，直(zhi)徑通(tong)常為600mm。人(ren)(ren)孔中心距地板一般為750mm。便于工(gong)作人(ren)(ren)員在(zai)安(an)裝(zhuang)、清洗、維(wei)護(hu)時進出油(you)罐或(huo)通(tong)風。

非金屬(shu)油罐(guan)的(de)(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)設在罐(guan)頂上(shang)，金屬(shu)油罐(guan)的(de)(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)設在罐(guan)壁***下(xia)圈板上(shang)。大都為(wei)直徑600mm的(de)(de)圓(yuan)孔(kong)(kong)(kong)，其中心距底板750mm，為(wei)油罐(guan)清洗(xi)或維修人(ren)(ren)(ren)員(yuan)進出油罐(guan)用(yong)，又稱作道門。檢修清理油罐(guan)時刻(ke)利用(yong)人(ren)(ren)(ren)孔(kong)(kong)(kong)進行采光和通風。立式油罐(guan)的(de)(de)容量在5000m3以下(xia)時設1~2個(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)，5000m3以上(shang)的(de)(de)設2個(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)。人(ren)(ren)(ren)孔(kong)(kong)(kong)的(de)(de)安裝應與(yu)進出油管(guan)線相隔(ge)(ge)不大于(yu)90°。當只設一(yi)個(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)時，應將其置于(yu)罐(guan)頂透光孔(kong)(kong)(kong)的(de)(de)對面(mian)(mian);當設2個(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)時，其中一(yi)個(ge)(ge)設在透光孔(kong)(kong)(kong)的(de)(de)對面(mian)(mian)，另一(yi)個(ge)(ge)應至少與(yu)第 一(yi)個(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)相隔(ge)(ge)90°。

人孔應有一(yi)個(ge)設在進(jin)出油(you)管右側附近，并盡量使人孔正對罐(guan)室密閉門，以便人員(yuan)進(jin)出、維(wei)修油(you)罐(guan)和通風接管用。

由(you)于人(ren)(ren)孔(kong)(kong)安裝(zhuang)在(zai)油罐的下層體圈(quan)上(shang)(shang)，防滲漏就顯得特別(bie)重要(yao)。要(yao)求兩法蘭結合面必須保證其平(ping)直度，無飄扭(niu)現(xian)象。加強板(ban)(ban)和(he)(he)法蘭應盡量(liang)在(zai)整(zheng)塊鋼板(ban)(ban)上(shang)(shang)切割而不拼(pin)接(jie)。法蘭和(he)(he)蓋板(ban)(ban)上(shang)(shang)加工有密封圈(quan)，在(zai)施工中要(yao)特別(bie)注意(yi)保護。密封用3mm厚(hou)石棉橡膠墊(dian)片，不允許有折裂。安裝(zhuang)人(ren)(ren)孔(kong)(kong)蓋板(ban)(ban)上(shang)(shang)緊螺栓時，要(yao)成對角(jiao)均勻用力，以防孔(kong)(kong)蓋變形(xing)。