設(shè)備檢查概論(存儲版)
【正文】 區(qū)等等。 大修檢查規(guī)劃方法 ? 工場大修設(shè)備檢查是應(yīng)用各種檢測和評估技術(shù)，對潛在高風(fēng)險(xiǎn)的設(shè)備，來決定設(shè)備的適用性，以進(jìn)行必要的銲補(bǔ)、更換維修措施或限制操作條件等措施，以期確保設(shè)備安全，降低操作意外風(fēng)險(xiǎn) ? 大修規(guī)劃目的在使大修檢查工作掌握重點(diǎn)，使更具效益和效率，基本涵蓋 (1)檢測計(jì)畫、 (2)檢測人員訓(xùn)練和能力認(rèn)定（含承攬商）、 (3)熟悉判定標(biāo)準(zhǔn)或規(guī)範(fàn)、 (4)熟悉檢測資料的應(yīng)用和 (5)檢測資料的保存和更新 。 2）過去檢查和修護(hù)記錄以及追蹤項(xiàng)目彙整 3）操作異常和變化記錄彙整 4）代檢設(shè)備彙整 5）延長開放設(shè)備彙整 設(shè)備和管線系統(tǒng)分類 ? 法規(guī) /規(guī)範(fàn) /公司規(guī)定 ? 操作 /損壞歷史 ? 檢查 /維修記錄 ? 損傷預(yù)測 ? 危害分析 設(shè)備選定 ? 依據(jù)資料之彙整和分析結(jié)果列出大修檢查的設(shè)備和管線。 檢查位置 設(shè)備至少應(yīng)進(jìn)行目視及測厚檢查，並應(yīng)標(biāo)示檢測位置及示意圖。 (C) 氣相中 H2S濃度超過 3wt%者。 (C) 保溫層下之腐蝕 (CUI)。 e). 干擾流體流動導(dǎo)致產(chǎn)生擾流處（如銲道、溫度計(jì)插入 點(diǎn)、法蘭等）之下游。 g). 氫起泡及氫誘發(fā)破裂（ HIC）。 ? 常用代號： NDT、 NDE、 NDI。 ? 實(shí)施方式：在可疑位置塗上肥皂液或?qū)Ｓ萌芤?，利用真空試漏箱緊壓此區(qū)域，真空開口邊緣與儲槽板之間放置一層軟的墊圈，經(jīng)真空泵抽真空至少表壓負(fù) 4psig以上真空度，如有洩漏時(shí)，可由真空箱頂?shù)牟ＡЭ闯鲇忻黠@的泡泡產(chǎn)生 Rapid Tube Inspection using Eddy Current (ET) or Remote Field (RFT) methods ? Characteristics of the ET technique ? High speed method. Inspects 500800, 10m tubes per day. ? 100% inspection of the tube. ? Little surface preparation (cleaning). ? Color coded reporting for convenient results overview. Heat exchanger Inspection Probe Signals produced by various amounts of corrosion thinning. Periodically, refinery plants are shutdown for inspection. Inspectors feed eddy current probes into heat exchanger tubes to check for corrosion damage. Pipe with damage Manual Ultrasonic (UT) Weld Inspection ? Quick and direct results. ? No protection against radiation required, neither interruption of other peoples work. ? Inservice inspection. ? Inspection of plex geometry welds with profile analysis of the weld using a PC. ? Inspections performed according to international standards ASME, EN etc. ? Final technical report that contains position, depth and type information of discontinuity. ? Storage of the discontinuities signals and inspection parameters. ? Sensitivity in critical discontinuities detection (. cracking). Automated Ultrasonic (UT) Tube Corrosion Mapping ? Inspection speed up to 100mm per second, depending on the desirable resolution. ? The probe for data recording is inserted pletely automated with a 300mm per second speed depending on the required measurement precision. ? Complete 2 or 3 axes recording (CScan and BScan) with capability to export the data on Excel worksheet for further analysis. ? Inspects tubes with diameters from 12mm up to 76mm. ? Thickness and corrosion mapping and/or inspection for other types of imperfections. Ultrasonic Thickness Measurements ?Quick measurements with direct results. ?High precision measurements. ?The inspected object can be inservice. ?No particular surface preparation required. ?Measurements can be made without removal of the paint. ? Measurements on high temperature surfaces possible Guided Ultrasonic Waves Pipe Inspection ? A ring with the transducers is placed around the
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