人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)是指用(yong)于人(ren)(ren)(ren)(ren)員(yuan)進出(chu)設備以便安(an)(an)裝、檢修和(he)安(an)(an)全檢查的開(kai)(kai)孔(kong)(kong)(kong)結構。主(zhu)要由短(duan)筒節（或(huo)(huo)短(duan)管）、法蘭和(he)帶把(ba)手的人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)蓋(gai)(gai)組成。從安(an)(an)全檢查考慮，壓力(li)容器要求開(kai)(kai)設的人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)數及其小尺寸見(jian)“檢查孔(kong)(kong)(kong)”。人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)材料有(you)碳鋼和(he)不銹鋼。按(an)(an)受壓情(qing)況人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)分為常壓和(he)受壓人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)；按(an)(an)形(xing)狀人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)分為圓形(xing)、橢圓形(xing)和(he)矩(ju)形(xing)人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)，矩(ju)形(xing)人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)僅(jin)適用(yong)于常壓設備；按(an)(an)安(an)(an)裝位置(zhi)人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)分為水(shui)平和(he)垂直安(an)(an)裝人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)；人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)蓋(gai)(gai)固(gu)定(ding)方式有(you)迥(jiong)轉蓋(gai)(gai)和(he)吊蓋(gai)(gai)；人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)開(kai)(kai)后速度有(you)普(pu)通式和(he)快(kuai)開(kai)(kai)式，人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)結構和(he)尺寸一(yi)般都已(yi)標準化，可參照有(you)關手冊選(xuan)用(yong)或(huo)(huo)設計(ji)。