12月8日(ri)，由(you)華(hua)陸公(gong)司EPC總承包(bao)的(de)萬(wan)華(hua)化(hua)學煙臺低(di)(di)溫乙(yi)烷罐(guan)(guan)及配套公(gong)輔設施項目2#低(di)(di)溫罐(guan)(guan)氣(qi)頂升圓滿成功(gong)，該低(di)(di)溫罐(guan)(guan)是公(gong)司首次承建(jian)的(de)采用公(gong)司自有(you)技術的(de)超大規模(mo)預應力混凝土全包(bao)容低(di)(di)溫儲罐(guan)(guan)，具有(you)重要示(shi)范(fan)意義。項目建(jian)設單(dan)(dan)位(wei)、監理單(dan)(dan)位(wei)和各參建(jian)單(dan)(dan)位(wei)主(zhu)要領導等到場(chang)指導。

本次氣(qi)頂升工作是利用(yong)封閉(bi)空(kong)間(jian)和外界壓(ya)力差的(de)原理，通過鼓風機（兩(liang)用(yong)一(yi)備）向密閉(bi)的(de)儲罐(guan)內部(bu)輸入(ru)低(di)壓(ya)空(kong)氣(qi)，將直徑82米、重量約(yue)650噸的(de)鋼拱(gong)頂結構從底部(bu)提(ti)升到(dao)離(li)承臺基(ji)礎約(yue)36.86米高的(de)頂部(bu)預(yu)定(ding)位置，整(zheng)個提(ti)升時(shi)間(jian)持續(xu)約(yue)3小時(shi)，在拱(gong)頂升至罐(guan)頂部(bu)后(hou)最終完成拱(gong)頂與承壓(ya)環的(de)焊(han)接固(gu)定(ding)。

該項目(mu)主(zhu)要包(bao)括建設兩座16萬立方米的全包(bao)容(rong)低溫罐組及配套公(gong)(gong)輔設施，由(you)華陸公(gong)(gong)司(si)負責項目(mu)設計、采購、施工及開車技術支(zhi)持(chi)服(fu)務(wu)工作。其中，低溫罐是公(gong)(gong)司(si)首次承(cheng)建的超大規模(mo)預應(ying)力混凝土全包(bao)容(rong)低溫儲罐，采用(yong)公(gong)(gong)司(si)自有(you)(you)知識產權的專利(li)專有(you)(you)技術。該項目(mu)的成功執(zhi)行(xing)，將對公(gong)(gong)司(si)開拓大型低溫儲罐市場領域具有(you)(you)重要意義。

項(xiang)目(mu)2#低溫罐(guan)自2023年3月份開(kai)始基坑開(kai)挖以來，項(xiang)目(mu)部精心設計(ji)、統籌部署，克服地(di)(di)質(zhi)條件(jian)復雜、場(chang)地(di)(di)受限、高溫雨雪天氣等(deng)不利因素，歷時4個月完(wan)成地(di)(di)基處理(li)、基礎筏板、架(jia)空短(duan)柱和(he)上承臺(tai)混凝(ning)土(tu)(tu)澆(jiao)筑，10月底(di)完(wan)成外罐(guan)大體積混凝(ning)土(tu)(tu)墻體施(shi)工(gong)(gong)。同時，提前(qian)組(zu)織(zhi)施(shi)工(gong)(gong)單(dan)位編制超危(wei)大工(gong)(gong)程專(zhuan)項(xiang)施(shi)工(gong)(gong)方案并組(zu)織(zhi)專(zhuan)家完(wan)成評(ping)審論證，全面梳理(li)具備氣頂升(sheng)條件(jian)的工(gong)(gong)作項(xiang)詳(xiang)細清(qing)單(dan)，針對(dui)性制定(ding)專(zhuan)項(xiang)進(jin)度計(ji)劃，每天定(ding)期(qi)組(zu)織(zhi)施(shi)工(gong)(gong)單(dan)位對(dui)照清(qing)單(dan)逐項(xiang)檢查確認氣頂升(sheng)條件(jian)，確保相關準(zhun)備工(gong)(gong)作提前(qian)完(wan)成，有力保證了氣頂升(sheng)順利進(jin)行。

2#低溫乙(yi)烷罐氣頂(ding)升的圓滿成(cheng)功，為后續穹(qiong)頂(ding)附件及(ji)罐內安裝工作的開展奠定了良(liang)好(hao)基礎。下一步，項(xiang)目(mu)部(bu)將(jiang)全力以赴，在保證安全質量的前(qian)提下切實抓好(hao)各項(xiang)工作，不斷加強精細化(hua)管理，高(gao)質量推進項(xiang)目(mu)建設，為業(ye)主和公司交上(shang)一份滿意答卷(juan)。

氣升頂小知識

氣升頂能有(you)效減(jian)少(shao)高空作業(ye)，有(you)利于降(jiang)低(di)施工(gong)(gong)(gong)(gong)成(cheng)本，加快項(xiang)目建設進(jin)度，同(tong)時保證(zheng)工(gong)(gong)(gong)(gong)程(cheng)質量(liang)。該項(xiang)工(gong)(gong)(gong)(gong)作也是大型低(di)溫儲罐(guan)施工(gong)(gong)(gong)(gong)中(zhong)難度最(zui)大、工(gong)(gong)(gong)(gong)藝最(zui)復雜、風險最(zui)高的關鍵工(gong)(gong)(gong)(gong)序之一，需(xu)要在過程(cheng)中(zhong)對(dui)平衡系(xi)統(tong)(tong)、密封系(xi)統(tong)(tong)、動力系(xi)統(tong)(tong)、測(ce)量(liang)與監測(ce)系(xi)統(tong)(tong)進(jin)行嚴格把控，以確(que)保各(ge)項(xiang)工(gong)(gong)(gong)(gong)作萬無一失。