人(ren)(ren)(ren)孔(kong)(kong)(kong)是(shi)指用于人(ren)(ren)(ren)員進出設備以便安裝、檢(jian)修和(he)(he)安全檢(jian)查(cha)的(de)(de)(de)開孔(kong)(kong)(kong)結構。主要由短筒節（或短管(guan)）、法(fa)蘭和(he)(he)帶(dai)把手(shou)的(de)(de)(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)蓋(gai)(gai)組成。從安全檢(jian)查(cha)考慮(lv)，壓(ya)力容器要求開設的(de)(de)(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)數及其小尺寸見(jian)“檢(jian)查(cha)孔(kong)(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)(kong)材料有(you)(you)碳鋼(gang)和(he)(he)不(bu)銹鋼(gang)。按(an)受壓(ya)情(qing)況人(ren)(ren)(ren)孔(kong)(kong)(kong)分為常壓(ya)和(he)(he)受壓(ya)人(ren)(ren)(ren)孔(kong)(kong)(kong)；按(an)形(xing)(xing)狀人(ren)(ren)(ren)孔(kong)(kong)(kong)分為圓形(xing)(xing)、橢圓形(xing)(xing)和(he)(he)矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)，矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)僅(jin)適用于常壓(ya)設備；按(an)安裝位置人(ren)(ren)(ren)孔(kong)(kong)(kong)分為水(shui)平和(he)(he)垂直安裝人(ren)(ren)(ren)孔(kong)(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)(kong)蓋(gai)(gai)固(gu)定方式有(you)(you)迥(jiong)轉蓋(gai)(gai)和(he)(he)吊(diao)蓋(gai)(gai)；人(ren)(ren)(ren)孔(kong)(kong)(kong)開后速度有(you)(you)普通(tong)式和(he)(he)快開式，人(ren)(ren)(ren)孔(kong)(kong)(kong)結構和(he)(he)尺寸一般都已標準(zhun)化，可參(can)照有(you)(you)關(guan)手(shou)冊(ce)選用或設計(ji)。