人(ren)(ren)(ren)孔(kong)(kong)是指用(yong)(yong)(yong)于人(ren)(ren)(ren)員進出設備以(yi)便安裝、檢修和(he)安全(quan)檢查(cha)(cha)的開(kai)(kai)孔(kong)(kong)結構(gou)。主要(yao)由短筒節（或(huo)短管）、法蘭(lan)和(he)帶(dai)把(ba)手的人(ren)(ren)(ren)孔(kong)(kong)蓋組(zu)成(cheng)。從安全(quan)檢查(cha)(cha)考慮，壓力容器要(yao)求開(kai)(kai)設的人(ren)(ren)(ren)孔(kong)(kong)數及其小尺寸見“檢查(cha)(cha)孔(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)材料有(you)碳(tan)鋼(gang)和(he)不銹鋼(gang)。按(an)(an)受壓情況人(ren)(ren)(ren)孔(kong)(kong)分為常(chang)壓和(he)受壓人(ren)(ren)(ren)孔(kong)(kong)；按(an)(an)形(xing)狀人(ren)(ren)(ren)孔(kong)(kong)分為圓形(xing)、橢(tuo)圓形(xing)和(he)矩(ju)形(xing)人(ren)(ren)(ren)孔(kong)(kong)，矩(ju)形(xing)人(ren)(ren)(ren)孔(kong)(kong)僅適用(yong)(yong)(yong)于常(chang)壓設備；按(an)(an)安裝位置人(ren)(ren)(ren)孔(kong)(kong)分為水平和(he)垂直安裝人(ren)(ren)(ren)孔(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)蓋固定方式有(you)迥(jiong)轉蓋和(he)吊蓋；人(ren)(ren)(ren)孔(kong)(kong)開(kai)(kai)后速度(du)有(you)普通(tong)式和(he)快開(kai)(kai)式，人(ren)(ren)(ren)孔(kong)(kong)結構(gou)和(he)尺寸一般(ban)都已標準化(hua)，可參照有(you)關手冊選用(yong)(yong)(yong)或(huo)設計。