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材料和工藝承包商參考資料-中英對(duì)照

發(fā)布時(shí)間:2014-8-3      閱讀次數(shù):1270

材料和工藝承包商參考資料-中英對(duì)照
6.1 總則
如果承包商在參考資料中發(fā)現(xiàn)有任何差異,在油箱施開(kāi)始工之前,必須和買(mǎi)方進(jìn)行協(xié)商。如果承包商沒(méi)有做到這一點(diǎn)

,將不得對(duì)買(mǎi)方的提出任何索賠。
承包商有責(zé)任要滿足參考文件圖紙中和附錄里的全部要求。承包商必須嚴(yán)格按照?qǐng)D紙中最新版的施工規(guī)范進(jìn)行作業(yè)。
如果在說(shuō)明書(shū)和圖紙、標(biāo)準(zhǔn)或者數(shù)據(jù)目錄之間有任何矛盾,以圖紙的最新的版本為準(zhǔn)。
連接法蘭螺絲孔洞的安裝不得與油箱的主軸線相合(L.C.和線條0度-90度-180 度-270 度),,但是必須與其對(duì)稱。
油箱供應(yīng)商必須提供下面列舉的托槽、支架和凸片:
-特殊絕緣支架
-樓梯和平臺(tái)的托槽
-管件支架的托槽
-認(rèn)可的任何其它必要的特殊支架
6.2 焊接
油箱采用電焊 (手動(dòng)或者自動(dòng))。 長(zhǎng)度和彎環(huán)向焊縫裂紋將清楚在圖紙中表明。 這些圖紙將在適當(dāng)時(shí)候提供給承包商。

除特例以外,在圖紙?jiān)谫I(mǎi)方正式批準(zhǔn)之前,承包商不允許開(kāi)始油箱的施工。
在進(jìn)行金屬板料的切割和挖槽作業(yè)過(guò)程中,金屬板料必須與焊接的材料相一致。 這是為了避免由于不適當(dāng)切割作業(yè)和

制備工藝影響焊接的質(zhì)量。如果發(fā)現(xiàn)任何缺陷,或者在技術(shù)方面有這樣的要求,(X超音波射線,液體滲透),買(mǎi)方可以

根據(jù)相關(guān)焊縫質(zhì)量和缺陷修理的合同責(zé)任,要求進(jìn)行額外的測(cè)試。
在任何可能的情況下,焊接必須在一個(gè)平坦的和/或水平的位置上進(jìn)行作業(yè)。 主焊縫不得進(jìn)行打孔或切割作業(yè)、焊接強(qiáng)

化作業(yè)和切屑作業(yè)等。兩個(gè)相臨環(huán)行工件的縱向焊縫不得在一條直線上。在焊接之前,劃痕、毛刺或者任何其它槽溝

的殘次品,必須進(jìn)行清除。
電焊作業(yè)不得在嚴(yán)重天氣情況(風(fēng)或者雨)下進(jìn)行,也不得在腐蝕,油漆或者骯臟的槽溝(油膩)條件下進(jìn)行作業(yè)。
毛刺,焊熔金屬飛濺,氣孔或者任何其它缺陷,不允許在油箱的表面上出現(xiàn)。 在涂裝前,全部的缺陷如空穴和預(yù)測(cè)需

要經(jīng)過(guò)磨削處理的和焊接處理的突出部分。使用熟石膏,膠,填料或者鑿刀用來(lái)清除上述的缺陷。
對(duì)10%焊接部位進(jìn)行X 射線檢查,保證焊接的質(zhì)量,建議在T型區(qū)域。
MATERIALS AND WORKMANSHIP

6.1 General

If the Contractor notices any discrepancy in the reference documents, they shall consult with the Purchaser before starting the erection of the tank. Failure to do so the Contractor shall not claim any charge to the purchaser.

The Contractor has the responsibility to meet all the requirements specified in the reference drawings and in its appendices. The Contractor shall also strictly conform to the latest editions of the norms of construction indicated in the drawings.

If there are any contradictions between this specification and the specific drawings, standards or data list, the latest edition of drawings are valid.

The flanges of the connections shall be assembled in such a way that their screw holes do not coincide with the main axes of the tank (L.C. and lines 0 deg. - 90 deg. - 180 deg. - 270 deg.), but are symmetrically located to these.

The tank supplier shall deliver the brackets, supports and lugs listed below:
- special insulation supports
- brackets for stairs and platforms
- brackets for piping supports
- any other special supports considered necessary

6.2 Welding

The tanks shall be electrically welded (manual or automatic). The longitudinal and circumferential welded seams shall be clearly indicated in the drawings. These drawings shall be given to the Contractor in due time. Except for special cases, the Contractor shall not start the erection of the tank before the drawings have been formally approved by the Purchaser.

The process used to cut and chamfer metal sheets shall be compatible with the materials to be welded. This is to avoid that the quality of the welding is affected by inadequate cutting and preparation process. If any imperfection is detected, or a technical reason so demands, the Purchaser may demand additional tests (X-ray ultrasonic, penetrating liquid) on welded seams and this defect repairs are under the contactors responsibility.

Whenever possible the welding shall be carried out on an even and/or horizontal position. The main seams shall not be interrupted (cut) by holes, reinforcement welds, chips etc. The longitudinal seams of two adjacent body rings shall never be in line. Scratches, burrs or any other imperfections in the chamfers, shall be removed before welding.

Welding with electrodes shall not be carried out under bad weather conditions (wind or rain) nor on corroded, painted or dirty (greasy) chamfer.

Burrs, weld splatters, porosities or any other imperfection shall not be allowed on the surfaces of the tank. Before painting, all imperfections such as hollows and projections shall be removed by welding and grinding. Plasters, glues, fillers or chisel shall never be used to remove the imperfections mentioned above.

10% of the welding joints to be X ray examination to ensure the quality of welding, Prefer  the ‘T’ joining area of the tank shell.

2014.8.3

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