人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)是(shi)指用(yong)于人(ren)(ren)員進出設(she)(she)備以便(bian)安(an)裝(zhuang)、檢(jian)修和(he)(he)安(an)全檢(jian)查(cha)(cha)的(de)開孔(kong)(kong)(kong)(kong)(kong)結(jie)構。主要由短(duan)筒(tong)節(jie)（或短(duan)管）、法蘭和(he)(he)帶把手(shou)的(de)人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)蓋(gai)組成。從安(an)全檢(jian)查(cha)(cha)考慮，壓(ya)力(li)容器(qi)要求(qiu)開設(she)(she)的(de)人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)數(shu)及其小(xiao)尺寸(cun)見“檢(jian)查(cha)(cha)孔(kong)(kong)(kong)(kong)(kong)”。人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)材料有(you)碳鋼(gang)(gang)和(he)(he)不銹鋼(gang)(gang)。按(an)受(shou)壓(ya)情況(kuang)人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)分(fen)為常壓(ya)和(he)(he)受(shou)壓(ya)人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)；按(an)形(xing)(xing)狀人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)分(fen)為圓形(xing)(xing)、橢圓形(xing)(xing)和(he)(he)矩形(xing)(xing)人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)，矩形(xing)(xing)人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)僅適(shi)用(yong)于常壓(ya)設(she)(she)備；按(an)安(an)裝(zhuang)位(wei)置人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)分(fen)為水平(ping)和(he)(he)垂直安(an)裝(zhuang)人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)；人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)蓋(gai)固定方式有(you)迥轉蓋(gai)和(he)(he)吊蓋(gai)；人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)開后速(su)度(du)有(you)普通式和(he)(he)快開式，人(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)結(jie)構和(he)(he)尺寸(cun)一般都已標準化，可參照有(you)關手(shou)冊(ce)選用(yong)或設(she)(she)計(ji)。