人(ren)(ren)孔(kong)(kong)(kong)(kong)是指(zhi)用(yong)(yong)于人(ren)(ren)員進出設(she)備(bei)以(yi)便安(an)(an)裝、檢修和(he)(he)(he)安(an)(an)全檢查的開孔(kong)(kong)(kong)(kong)結(jie)構。主(zhu)要由短(duan)筒(tong)節(jie)（或短(duan)管）、法蘭和(he)(he)(he)帶把手的人(ren)(ren)孔(kong)(kong)(kong)(kong)蓋組成。從安(an)(an)全檢查考慮，壓(ya)(ya)力容器要求開設(she)的人(ren)(ren)孔(kong)(kong)(kong)(kong)數(shu)及其(qi)小尺寸(cun)見“檢查孔(kong)(kong)(kong)(kong)”。人(ren)(ren)孔(kong)(kong)(kong)(kong)材(cai)料(liao)有碳(tan)鋼和(he)(he)(he)不銹鋼。按受壓(ya)(ya)情況人(ren)(ren)孔(kong)(kong)(kong)(kong)分為常(chang)壓(ya)(ya)和(he)(he)(he)受壓(ya)(ya)人(ren)(ren)孔(kong)(kong)(kong)(kong)；按形(xing)(xing)狀人(ren)(ren)孔(kong)(kong)(kong)(kong)分為圓形(xing)(xing)、橢圓形(xing)(xing)和(he)(he)(he)矩(ju)形(xing)(xing)人(ren)(ren)孔(kong)(kong)(kong)(kong)，矩(ju)形(xing)(xing)人(ren)(ren)孔(kong)(kong)(kong)(kong)僅適用(yong)(yong)于常(chang)壓(ya)(ya)設(she)備(bei)；按安(an)(an)裝位置人(ren)(ren)孔(kong)(kong)(kong)(kong)分為水平和(he)(he)(he)垂直安(an)(an)裝人(ren)(ren)孔(kong)(kong)(kong)(kong)；人(ren)(ren)孔(kong)(kong)(kong)(kong)蓋固(gu)定方式有迥轉(zhuan)蓋和(he)(he)(he)吊(diao)蓋；人(ren)(ren)孔(kong)(kong)(kong)(kong)開后速度(du)有普通式和(he)(he)(he)快開式，人(ren)(ren)孔(kong)(kong)(kong)(kong)結(jie)構和(he)(he)(he)尺寸(cun)一般(ban)都已標(biao)準(zhun)化，可參照有關手冊(ce)選(xuan)用(yong)(yong)或設(she)計。