人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)是指(zhi)用于人(ren)(ren)(ren)(ren)員進(jìn)(jin)出設(shè)備(bei)以便安裝、檢修和(he)(he)(he)安全檢查(cha)的開孔(kong)(kong)(kong)(kong)結(jié)構(gòu)。主(zhu)要由短筒節(jié)（或(huo)短管(guan)）、法(fa)蘭和(he)(he)(he)帶把手的人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋組成。從安全檢查(cha)考慮(lv)，壓力容器要求開設(shè)的人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)數(shù)及其小尺寸見“檢查(cha)孔(kong)(kong)(kong)(kong)”。人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)材料有(you)碳鋼(gang)和(he)(he)(he)不銹鋼(gang)。按(an)受(shou)壓情況人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為常壓和(he)(he)(he)受(shou)壓人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；按(an)形狀人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為圓(yuan)形、橢(tuo)圓(yuan)形和(he)(he)(he)矩(ju)形人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)，矩(ju)形人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)僅適用于常壓設(shè)備(bei)；按(an)安裝位(wei)置人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為水平(ping)和(he)(he)(he)垂(chui)直安裝人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋固定方(fang)式(shi)有(you)迥轉(zhuǎn)蓋和(he)(he)(he)吊(diao)蓋；人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)開后速度有(you)普通式(shi)和(he)(he)(he)快開式(shi)，人(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)結(jié)構(gòu)和(he)(he)(he)尺寸一般都已標(biāo)準(zhǔn)化，可參照有(you)關(guān)手冊選用或(huo)設(shè)計(jì)(ji)。