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首页> 外文会议>Corrosion conference and expo >Corrosion Management of Assets Constructed Super Duplex Stainless Steels Topside and Subsea - A Suppliers Perspective
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Corrosion Management of Assets Constructed Super Duplex Stainless Steels Topside and Subsea - A Suppliers Perspective

机译：供应商的观点：上部和海底建造的超级双相不锈钢资产的腐蚀管理

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Super Duplex Stainless Steels (SDSS) are utilised extensively by the oil and gas industry offshore, on fixed platforms, production vessels and subsea developments because they provide an excellent combination of; a) Strength, weldability, fracture toughness and structural integrity. b) Corrosion resistance in natural and chlorinated seawater. c) Corrosion resistance in CO_2/ H_2S/Cl~- process environments. D) Corrosion resistance in in marine atmospheres. E) They have high design strength, allowing weight savings through the construction of lower wall thickness, pipe work systems, process equipment and vessels. F) They are readily available in all cast and wrought product forms. G) They provide long life/minimum maintenance functionality to facilities that means that they are not normally manned and personnel are not exposed to the arduous offshore conditions. H) They provide lower level, cumulative, through life costs when compared with alternative material selection philosophies. As such they find application in seawater cooling and fire protection systems, topside and subsea production pipe work, flow lines and pipelines. However, this presupposes that all items in the bill of materials are consistently and repeatedly properly processed, heat treated, pickled and passivated, fabricated, installed, commissioned, operated, maintained and deployed in environments within the limits of their application range. With over 30 years of wide scale use of these alloys by the oil and gas industry the overall experience has been good. However, intermittently problems recur. Some, like intermetallic precipitates in products are high profile and well known, but others are less well known. Based on alloy development and manufacturer independent supply experience of super duplex steel over a 30 year period the paper considers some of the less well known but recurring problems and the methods used to ameliorate them. From this information it is hoped that corrosion management strategies can be enhanced to sustain and or extended practical limits of use of this grade of steel in the future.
机译：超级双相不锈钢（SDSS）在海上石油和天然气行业，固定平台，生产船和海底开发中得到广泛使用，因为它们提供了以下方面的出色组合： a）强度，可焊性，断裂韧性和结构完整性。 b）天然和氯化海水中的耐腐蚀性。 c）在CO_2 / H_2S / Cl〜-工艺环境中的耐腐蚀性。 D）在海洋大气中的耐腐蚀性。 E）它们具有很高的设计强度，可通过建造较低的壁厚，管道系统，工艺设备和容器来减轻重量。 F）它们易于以各种铸造和锻造产品形式获得。 G）它们为设施提供长寿命/最少的维护功能，这意味着它们通常不会有人值守，并且人员也不会暴露于艰苦的海上条件下。 H）与替代材料选择哲学相比，它们提供较低的水平，累积的，生命周期成本。因此，它们可用于海水冷却和消防系统，顶上和海底生产管道工程，流水线和管道中。但是，前提是物料清单中的所有项目均在其应用范围内的环境中进行了一致且反复的适当处理，热处理，酸洗和钝化，制造，安装，调试，操作，维护和部署。在石油和天然气行业中，这些合金已有30多年的广泛使用历史，其整体经验是良好的。但是，间歇性问题再次出现。某些产品（例如产品中的金属间沉淀物）高调且广为人知，而其他产品则鲜为人知。基于30年间超级双相钢的合金开发和制造商独立的供应经验，本文考虑了一些鲜为人知但反复出现的问题以及改善这些问题的方法。从这些信息中，希望将来可以增强腐蚀管理策略，以维持和/或扩展使用该等级钢的实际限制。

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