瀝(li)青罐(guan)使(shi)用一(yi)段時間后要進行清洗工作，那么清洗瀝(li)青罐(guan)前應該(gai)做好哪些防護呢? 

瀝(li)(li)(li)青(qing)罐清洗(xi)時(shi)一般用柴(chai)油，如(ru)果有一定厚(hou)度的話可以(yi)先通(tong)(tong)(tong)過(guo)物(wu)(wu)理(li)方法清理(li)一遍，然后加(jia)柴(chai)油洗(xi)凈。洞(dong)庫抽吸底(di)油時(shi)啟動通(tong)(tong)(tong)風(feng)(feng)(feng)系統，以(yi)保證作(zuo)業(ye)場(chang)所的通(tong)(tong)(tong)風(feng)(feng)(feng)換(huan)(huan)氣(qi)(qi)。清除(chu)罐底(di)污(wu)物(wu)(wu)期(qi)間極易(yi)發生油氣(qi)(qi)中毒事故，必須(xu)做好防護(hu)工作(zuo)，防止中毒。除(chu)此之外還要(yao)檢(jian)查通(tong)(tong)(tong)風(feng)(feng)(feng)設(she)備技術狀態，啟動風(feng)(feng)(feng)機通(tong)(tong)(tong)風(feng)(feng)(feng)換(huan)(huan)氣(qi)(qi)。洞(dong)室(shi)瀝(li)(li)(li)青(qing)罐、半(ban)地(di)下瀝(li)(li)(li)青(qing)罐應連續(xu)進行通(tong)(tong)(tong)風(feng)(feng)(feng)換(huan)(huan)氣(qi)(qi)，停(ting)止通(tong)(tong)(tong)風(feng)(feng)(feng)時(shi)，必須(xu)將瀝(li)(li)(li)青(qing)罐上孔口密封。檢(jian)查人員防護(hu)著裝和呼吸器(qi)符合安全要(yao)求;檢(jian)查使(shi)用工具、器(qi)材(木質(zhi))是否符合防爆(bao)要(yao)求，合格后進入瀝(li)(li)(li)青(qing)罐清除(chu)污(wu)物(wu)(wu)。 

另(ling)外在瀝(li)青罐的(de)使用(yong)過(guo)程中，突發停電或者循環系(xi)統發生故障，在采取通風降溫外，我們別(bie)忘了冷(leng)導熱油(you)(you)(you)(you)進行置(zhi)換(huan)(huan)(huan)（說白了就是人工加入冷(leng)油(you)(you)(you)(you)），置(zhi)換(huan)(huan)(huan)要(yao)快速有(you)序。在這里要(yao)提醒大家的(de)是千萬別(bie)講冷(leng)油(you)(you)(you)(you)置(zhi)換(huan)(huan)(huan)油(you)(you)(you)(you)閥打開(kai)太(tai)大。在置(zhi)換(huan)(huan)(huan)的(de)過(guo)程中我們的(de)油(you)(you)(you)(you)閥開(kai)啟(qi)度是遵(zun)循由大到小的(de)規(gui)律，這樣(yang)就是盡可能(neng)延長置(zhi)換(huan)(huan)(huan)時間的(de)同時確保有(you)足夠(gou)的(de)冷(leng)油(you)(you)(you)(you)供置(zhi)換(huan)(huan)(huan)，有(you)效的(de)避免了瀝(li)青加溫罐處于(yu)無油(you)(you)(you)(you)或少(shao)油(you)(you)(you)(you)狀態。