人(ren)(ren)(ren)孔(kong)(kong)是(shi)指用于人(ren)(ren)(ren)員進出設(she)備(bei)以(yi)便安(an)裝、檢(jian)修和安(an)全檢(jian)查的(de)(de)開(kai)(kai)孔(kong)(kong)結(jie)構。主(zhu)要(yao)由短筒節（或短管）、法蘭和帶把手的(de)(de)人(ren)(ren)(ren)孔(kong)(kong)蓋(gai)組成。從安(an)全檢(jian)查考慮，壓(ya)力(li)容器要(yao)求開(kai)(kai)設(she)的(de)(de)人(ren)(ren)(ren)孔(kong)(kong)數及其小(xiao)尺寸見“檢(jian)查孔(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)材料有碳鋼和不銹(xiu)鋼。按受壓(ya)情況人(ren)(ren)(ren)孔(kong)(kong)分(fen)為(wei)(wei)常壓(ya)和受壓(ya)人(ren)(ren)(ren)孔(kong)(kong)；按形(xing)(xing)狀(zhuang)人(ren)(ren)(ren)孔(kong)(kong)分(fen)為(wei)(wei)圓形(xing)(xing)、橢圓形(xing)(xing)和矩(ju)形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)，矩(ju)形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)僅(jin)適(shi)用于常壓(ya)設(she)備(bei)；按安(an)裝位置人(ren)(ren)(ren)孔(kong)(kong)分(fen)為(wei)(wei)水(shui)平和垂(chui)直(zhi)安(an)裝人(ren)(ren)(ren)孔(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)蓋(gai)固定方式有迥轉蓋(gai)和吊蓋(gai)；人(ren)(ren)(ren)孔(kong)(kong)開(kai)(kai)后速度有普(pu)通式和快開(kai)(kai)式，人(ren)(ren)(ren)孔(kong)(kong)結(jie)構和尺寸一(yi)般都已(yi)標準化，可參照(zhao)有關(guan)手冊選用或設(she)計(ji)。