某工程(cheng)管(guan)道(dao)(dao)器材(cai)(cai)設(she)計人員(yuan)因不(bu)了解工藝原(yuan)理，僅僅通(tong)過管(guan)道(dao)(dao)設(she)計溫(wen)度(du)、壓力、流體介質(zhi)特性(xing)參數(shu)，選(xuan)用(yong)了碳鋼材(cai)(cai)質(zhi)管(guan)道(dao)(dao)等級，實(shi)際運行(xing)(xing)時，裝(zhuang)置內因某種(zhong)原(yuan)因釋放的物料溫(wen)度(du)在-40℃以下(xia)，在高荷載作用(yong)下(xia)，管(guan)道(dao)(dao)疲勞(lao)造成管(guan)子裂紋(wen)泄漏。如果管(guan)道(dao)(dao)器材(cai)(cai)設(she)計人員(yuan)了解清楚工藝原(yuan)理再進(jin)行(xing)(xing)器材(cai)(cai)選(xuan)用(yong)，就應該知道(dao)(dao)只有選(xuan)用(yong)低(di)溫(wen)鋼才能保證管(guan)子運行(xing)(xing)的本質(zhi)安全。