人(ren)孔分為緊(jin)急(ji)泄壓人(ren)孔、防爆阻火呼吸人(ren)孔、罐(guan)頂人(ren)孔、罐(guan)壁(bi)人(ren)孔和帶芯人(ren)孔

人(ren)孔已有成型產品，直(zhi)徑(jing)通(tong)常(chang)為(wei)600mm。人(ren)孔中心距(ju)地板一(yi)般為(wei)750mm。便于工作人(ren)員(yuan)在(zai)安裝、清洗、維(wei)護時進出油罐或通(tong)風。

非金屬油(you)罐(guan)(guan)的(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)設(she)在罐(guan)(guan)頂上(shang)，金屬油(you)罐(guan)(guan)的(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)設(she)在罐(guan)(guan)壁***下(xia)圈板(ban)上(shang)。大(da)都為(wei)直徑600mm的(de)圓孔(kong)(kong)(kong)(kong)，其中心距底(di)板(ban)750mm，為(wei)油(you)罐(guan)(guan)清(qing)洗或維(wei)修人(ren)(ren)(ren)員(yuan)進(jin)出油(you)罐(guan)(guan)用(yong)，又稱作(zuo)道(dao)門。檢修清(qing)理油(you)罐(guan)(guan)時(shi)(shi)刻(ke)利用(yong)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)進(jin)行采(cai)光(guang)和(he)通風。立式(shi)油(you)罐(guan)(guan)的(de)容量在5000m3以下(xia)時(shi)(shi)設(she)1~2個(ge)(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)，5000m3以上(shang)的(de)設(she)2個(ge)(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)。人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)的(de)安(an)裝應與(yu)進(jin)出油(you)管線相隔不大(da)于90°。當(dang)只設(she)一個(ge)(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)時(shi)(shi)，應將(jiang)其置于罐(guan)(guan)頂透光(guang)孔(kong)(kong)(kong)(kong)的(de)對面;當(dang)設(she)2個(ge)(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)時(shi)(shi)，其中一個(ge)(ge)(ge)設(she)在透光(guang)孔(kong)(kong)(kong)(kong)的(de)對面，另一個(ge)(ge)(ge)應至少與(yu)第 一個(ge)(ge)(ge)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)相隔90°。

人孔(kong)應有(you)一個(ge)設在進出(chu)(chu)油(you)管(guan)右側附近，并盡量使人孔(kong)正對罐室密(mi)閉門，以便人員(yuan)進出(chu)(chu)、維修油(you)罐和通風接管(guan)用。

由于(yu)人(ren)孔(kong)安裝在(zai)(zai)油罐的下層體(ti)圈上，防滲(shen)漏(lou)就(jiu)顯(xian)得特別重要(yao)。要(yao)求(qiu)兩法蘭結合面必須保證(zheng)其平(ping)直度(du)，無飄扭現(xian)象。加強板(ban)和(he)法蘭應盡(jin)量在(zai)(zai)整塊鋼板(ban)上切割而不(bu)拼接(jie)。法蘭和(he)蓋板(ban)上加工(gong)有密封圈，在(zai)(zai)施工(gong)中要(yao)特別注意(yi)保護(hu)。密封用3mm厚石棉橡膠墊片，不(bu)允許有折裂。安裝人(ren)孔(kong)蓋板(ban)上緊螺栓時，要(yao)成對角均勻用力(li)，以防孔(kong)蓋變形。