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      四川成都永通機械經過24年的發展已成為集粉流體混合機,攪拌機,反應釜,輸送機,分散機,除塵器,計量包裝機,研磨機,涂料建材化工成套設備等綜合性機械制造企業如:干粉砂漿設備,膩子粉設備,儲罐,;⒅樵O備,涂料設備,研磨設備,化工反應釜設備,樹脂設備,等設備,永通還致力于:鋼襯塑,鋼襯PE,鋼襯PO,鋼襯四氟儲罐反應釜和管道的非標化工防腐設備生產為一體的大型企業,2009年成立四川金梯永通四氟防腐科技有限公司將四氟防腐高端技術帶進四川成都、重慶等大城市力圖打造西部化工防腐強軍。

      儲罐該如何做定期檢驗

      來源:成都市新都永通機械廠 瀏覽次數:4653次 更新日期:2014-07-14

       儲罐是化工行業儲存和運輸物料的基本設備,為了避免儲罐出現安全隱患,儲罐要定期進行安全檢查,因此對于使用單位了解儲罐的檢驗安全技術操作章程是非常重要的。今天四川成都金梯永通機械廠小編在中國儲罐網看到一篇關于儲罐安全檢查的文章覺得有必要和大家分享一下!

      首先,我們要知道什么是儲罐檢驗?儲罐檢驗分為外部檢驗、內部檢驗和全面檢驗。儲罐的周期檢驗則根據設備的技術使用條件來確定,一般來說外部檢查每年至少一次,內部檢查每3年至少一次,全面檢查每6年至少一次。若儲罐使用年限達到15年以上,則每兩年則需進行一次內外部檢驗,若使用年限達20年,則每一年至少進行一次內外部檢驗。
      其次,我們來了解一下儲罐檢查前應該要做些什么準備工作。
      1、查閱相關資料,了解之前檢查時出現的缺陷、問題及處理方法;
      2、將儲罐內部的物料清除干凈,并與其它設備隔開且做明顯標記;
      3、將儲罐內的殘留氣體進行置換清洗處理,并分析達到安全標準;
      4、打開全部人孔,拆除內件,清除內壁污物;
      5、切斷儲罐電源,做儲罐內部檢驗時應使用電壓不超過12v或24v的低壓防爆燈,且罐外必須有專人監護,檢驗儀器和工具的電壓不超過36v,且要采用良好的絕緣軟線和可靠的接地線;
      6、若涉及的動火作業,則必須按規定辦理動火審批手續,且罐區必須配消防、安全和救護設施。
      第三點,關于儲罐檢驗的具體操作,這也是最重要的一點,前面也說了它包括三方面玩不檢驗、內部檢驗和全面檢驗;
      1、外部檢驗
      1)檢驗儲罐的防腐層、保溫層和設備銘牌是否完好,安全附件、控制裝置是否齊全、靈敏、可靠;
      2)外表面有無裂紋、變形、局部過熱等現象;
      3)接管焊縫、受壓元件有無泄漏,緊固螺栓是否完好、基礎有無下沉、傾斜等異常情況;
      2、內部檢查
      1)內表面和人孔接管儲罐有無腐蝕劑磨損現象,焊縫、封頭過渡區或其他應力集中的地方有無裂紋;
      2)罐體內外表面有腐蝕等現象時,應對有懷疑部位進行多處壁厚測量。測量的壁厚如小于設計最小壁厚時,應重新進行強度核定,并提出可否繼續使用和許用最高工作壓力的建議。 
      3)罐體內壁有脫炭、應力腐蝕、晶間腐蝕和疲勞裂紋等缺陷時,應進行金相檢驗和表面硬度測定,并提出檢驗報告。 
      3、全面檢驗
      1)對主要焊縫或殼體進行無損傷檢查,抽查長度為焊縫總長的20%;
      2)經內外部檢驗合格后,按儲罐設計壓力的1.25倍進行水壓試驗和按儲罐設計壓力進行氣密試驗。在上述試驗過程中,儲罐和各部焊縫無滲漏,以及儲罐無可見的異常變形為合格。 
      最后,根據檢驗結果記錄寫出檢驗報告,指明儲罐是否可以繼續使用,對可繼續使用但發現問題儲罐,記錄好處理結果,并將檢驗報告存入儲罐技術檔案內,方便以后查閱。
       
       
       
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