人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)是指用(yong)于人(ren)(ren)(ren)員進出設備(bei)(bei)以便(bian)安(an)(an)裝、檢修和(he)(he)安(an)(an)全檢查的(de)開(kai)孔(kong)(kong)(kong)(kong)結構。主(zhu)要(yao)(yao)由短(duan)筒節（或短(duan)管）、法蘭和(he)(he)帶把手(shou)的(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋組(zu)成。從(cong)安(an)(an)全檢查考慮，壓(ya)(ya)(ya)力容器要(yao)(yao)求開(kai)設的(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)數及其小尺(chi)寸見“檢查孔(kong)(kong)(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)材(cai)料有(you)碳鋼和(he)(he)不銹鋼。按(an)受壓(ya)(ya)(ya)情況人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為(wei)常(chang)壓(ya)(ya)(ya)和(he)(he)受壓(ya)(ya)(ya)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；按(an)形(xing)(xing)狀人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為(wei)圓形(xing)(xing)、橢圓形(xing)(xing)和(he)(he)矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)，矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)僅(jin)適(shi)用(yong)于常(chang)壓(ya)(ya)(ya)設備(bei)(bei)；按(an)安(an)(an)裝位置人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為(wei)水平和(he)(he)垂直安(an)(an)裝人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋固定方(fang)式(shi)有(you)迥(jiong)轉蓋和(he)(he)吊蓋；人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)開(kai)后(hou)速(su)度有(you)普通式(shi)和(he)(he)快(kuai)開(kai)式(shi)，人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)結構和(he)(he)尺(chi)寸一般都已標準(zhun)化，可參照有(you)關(guan)手(shou)冊(ce)選用(yong)或設計。