人(ren)(ren)孔(kong)(kong)(kong)是指用于人(ren)(ren)員進出設(she)(she)備(bei)以便(bian)安(an)(an)裝(zhuang)、檢(jian)修和(he)(he)安(an)(an)全檢(jian)查(cha)(cha)的開(kai)孔(kong)(kong)(kong)結構。主(zhu)要(yao)由短筒節（或短管(guan)）、法蘭和(he)(he)帶把手的人(ren)(ren)孔(kong)(kong)(kong)蓋(gai)組成。從安(an)(an)全檢(jian)查(cha)(cha)考(kao)慮(lv)，壓(ya)力容器(qi)要(yao)求開(kai)設(she)(she)的人(ren)(ren)孔(kong)(kong)(kong)數及其(qi)小尺寸見“檢(jian)查(cha)(cha)孔(kong)(kong)(kong)”。人(ren)(ren)孔(kong)(kong)(kong)材料有(you)碳(tan)鋼和(he)(he)不銹鋼。按受壓(ya)情況人(ren)(ren)孔(kong)(kong)(kong)分(fen)為常壓(ya)和(he)(he)受壓(ya)人(ren)(ren)孔(kong)(kong)(kong)；按形狀人(ren)(ren)孔(kong)(kong)(kong)分(fen)為圓形、橢(tuo)圓形和(he)(he)矩(ju)形人(ren)(ren)孔(kong)(kong)(kong)，矩(ju)形人(ren)(ren)孔(kong)(kong)(kong)僅適(shi)用于常壓(ya)設(she)(she)備(bei)；按安(an)(an)裝(zhuang)位(wei)置人(ren)(ren)孔(kong)(kong)(kong)分(fen)為水平和(he)(he)垂直安(an)(an)裝(zhuang)人(ren)(ren)孔(kong)(kong)(kong)；人(ren)(ren)孔(kong)(kong)(kong)蓋(gai)固(gu)定方式有(you)迥(jiong)轉蓋(gai)和(he)(he)吊蓋(gai)；人(ren)(ren)孔(kong)(kong)(kong)開(kai)后速度有(you)普通式和(he)(he)快開(kai)式，人(ren)(ren)孔(kong)(kong)(kong)結構和(he)(he)尺寸一般都已標準化(hua)，可參照有(you)關手冊選用或設(she)(she)計。