人(ren)(ren)孔(kong)(kong)(kong)(kong)是指用于(yu)人(ren)(ren)員進出設備以便安(an)(an)裝(zhuang)、檢(jian)(jian)(jian)修和(he)安(an)(an)全檢(jian)(jian)(jian)查(cha)的開孔(kong)(kong)(kong)(kong)結(jie)構(gou)。主要由短(duan)筒節(jie)（或(huo)短(duan)管）、法蘭和(he)帶把手(shou)的人(ren)(ren)孔(kong)(kong)(kong)(kong)蓋(gai)組成。從安(an)(an)全檢(jian)(jian)(jian)查(cha)考慮，壓力容器要求(qiu)開設的人(ren)(ren)孔(kong)(kong)(kong)(kong)數及其小尺寸見“檢(jian)(jian)(jian)查(cha)孔(kong)(kong)(kong)(kong)”。人(ren)(ren)孔(kong)(kong)(kong)(kong)材料(liao)有(you)碳鋼和(he)不銹鋼。按受壓情(qing)況(kuang)人(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為(wei)常(chang)壓和(he)受壓人(ren)(ren)孔(kong)(kong)(kong)(kong)；按形(xing)狀人(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為(wei)圓形(xing)、橢(tuo)圓形(xing)和(he)矩形(xing)人(ren)(ren)孔(kong)(kong)(kong)(kong)，矩形(xing)人(ren)(ren)孔(kong)(kong)(kong)(kong)僅適(shi)用于(yu)常(chang)壓設備；按安(an)(an)裝(zhuang)位置人(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為(wei)水平和(he)垂直安(an)(an)裝(zhuang)人(ren)(ren)孔(kong)(kong)(kong)(kong)；人(ren)(ren)孔(kong)(kong)(kong)(kong)蓋(gai)固定方式有(you)迥轉蓋(gai)和(he)吊蓋(gai)；人(ren)(ren)孔(kong)(kong)(kong)(kong)開后速度有(you)普通式和(he)快(kuai)開式，人(ren)(ren)孔(kong)(kong)(kong)(kong)結(jie)構(gou)和(he)尺寸一般都已標準化(hua)，可參照有(you)關(guan)手(shou)冊選用或(huo)設計(ji)。