人(ren)(ren)孔(kong)(kong)(kong)是指用于人(ren)(ren)員進(jin)出設(she)備以便安(an)裝(zhuang)、檢(jian)修和安(an)全檢(jian)查的開孔(kong)(kong)(kong)結(jie)(jie)構。主要(yao)由短筒節（或短管）、法(fa)蘭和帶把手的人(ren)(ren)孔(kong)(kong)(kong)蓋組成(cheng)。從安(an)全檢(jian)查考慮(lv)，壓力容器要(yao)求開設(she)的人(ren)(ren)孔(kong)(kong)(kong)數(shu)及其(qi)小尺寸(cun)見“檢(jian)查孔(kong)(kong)(kong)”。人(ren)(ren)孔(kong)(kong)(kong)材料有碳鋼和不銹鋼。按(an)受(shou)壓情況人(ren)(ren)孔(kong)(kong)(kong)分(fen)為(wei)常壓和受(shou)壓人(ren)(ren)孔(kong)(kong)(kong)；按(an)形狀人(ren)(ren)孔(kong)(kong)(kong)分(fen)為(wei)圓(yuan)形、橢圓(yuan)形和矩形人(ren)(ren)孔(kong)(kong)(kong)，矩形人(ren)(ren)孔(kong)(kong)(kong)僅適用于常壓設(she)備；按(an)安(an)裝(zhuang)位置人(ren)(ren)孔(kong)(kong)(kong)分(fen)為(wei)水平和垂直安(an)裝(zhuang)人(ren)(ren)孔(kong)(kong)(kong)；人(ren)(ren)孔(kong)(kong)(kong)蓋固定方式有迥轉蓋和吊蓋；人(ren)(ren)孔(kong)(kong)(kong)開后速度有普通式和快開式，人(ren)(ren)孔(kong)(kong)(kong)結(jie)(jie)構和尺寸(cun)一般都已標準化，可(ke)參照(zhao)有關手冊(ce)選用或設(she)計。