人(ren)(ren)(ren)(ren)孔(kong)(kong)是指(zhi)用于人(ren)(ren)(ren)(ren)員進出(chu)設備(bei)以便安(an)(an)裝、檢(jian)修和(he)安(an)(an)全檢(jian)查的(de)開(kai)孔(kong)(kong)結(jie)(jie)構。主(zhu)要由(you)短(duan)筒節（或(huo)短(duan)管）、法蘭和(he)帶把手(shou)的(de)人(ren)(ren)(ren)(ren)孔(kong)(kong)蓋組成(cheng)。從安(an)(an)全檢(jian)查考慮，壓力容(rong)器要求開(kai)設的(de)人(ren)(ren)(ren)(ren)孔(kong)(kong)數及其小尺寸(cun)(cun)見“檢(jian)查孔(kong)(kong)”。人(ren)(ren)(ren)(ren)孔(kong)(kong)材(cai)料有(you)(you)碳鋼(gang)和(he)不銹鋼(gang)。按(an)受壓情(qing)況人(ren)(ren)(ren)(ren)孔(kong)(kong)分(fen)(fen)為(wei)常(chang)壓和(he)受壓人(ren)(ren)(ren)(ren)孔(kong)(kong)；按(an)形(xing)(xing)狀人(ren)(ren)(ren)(ren)孔(kong)(kong)分(fen)(fen)為(wei)圓形(xing)(xing)、橢(tuo)圓形(xing)(xing)和(he)矩形(xing)(xing)人(ren)(ren)(ren)(ren)孔(kong)(kong)，矩形(xing)(xing)人(ren)(ren)(ren)(ren)孔(kong)(kong)僅適用于常(chang)壓設備(bei)；按(an)安(an)(an)裝位置人(ren)(ren)(ren)(ren)孔(kong)(kong)分(fen)(fen)為(wei)水平和(he)垂直安(an)(an)裝人(ren)(ren)(ren)(ren)孔(kong)(kong)；人(ren)(ren)(ren)(ren)孔(kong)(kong)蓋固定(ding)方(fang)式有(you)(you)迥轉蓋和(he)吊蓋；人(ren)(ren)(ren)(ren)孔(kong)(kong)開(kai)后速度有(you)(you)普(pu)通式和(he)快開(kai)式，人(ren)(ren)(ren)(ren)孔(kong)(kong)結(jie)(jie)構和(he)尺寸(cun)(cun)一般(ban)都已標準化(hua)，可參照有(you)(you)關手(shou)冊選(xuan)用或(huo)設計。