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首页> 外文会议>Proceedings of the ASME power conference 2009 >BEST PRACTICES: MULTI-TON COMPONENT REMOVAL/REPLACEMENT UTILIZING AIR CASTERS
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BEST PRACTICES: MULTI-TON COMPONENT REMOVAL/REPLACEMENT UTILIZING AIR CASTERS

机译：最佳实践：利用空气脱模机进行多吨位组件的拆卸/更换

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摘要

Power plants originally designed to be decommissioned at 20-30 years are extending their service life by removing/replacing major power plant components. This requirement is contrary to the original floor and workspace designs engineered for power plants. Feedwater heaters, casks, heat exchangers, and other very large (50' +) and heavy (20-100 Ton) components can overcome floor and space restrictions by using a combination of air casters and cranes. This proven methodology saves in excess of 75% of the cost of a standard crane-only operation and significantly reduces the possibility of permanent floor damage.rnAir caster transport systems are low profile and easily insert under industrial heaters, exchangers, transformers, etc. The casters raise components and carry them across the floor, spreading the multi-ton weight across the surface area without damage to the floor or component. Air casters are frictionless even with the heaviest loads, and significantly reduce ergonomic risk while also providing the benefit of requiring a reduced workforce to move the component across the floor. Controlled drive systems allow a single operator to easily move components omni-directionally without wheels or rails, and into position within .5" (13mm) accuracy. The air caster methodology for moving heavy loads was referenced as proven effective in existing nuclear plants in the 2004 ICONE paper presented by Tokyo Power.rnAir casters, often coupled with cranes, significantly lower material handling costs associated with new installation and repair/refurbishment of components up to and over 5000 tons. Air casters operate on normal compressed air and have very few moving parts, resulting in low ongoing maintenance costs.
机译：最初设计为在20-30年后退役的发电厂将通过移除/更换主要发电厂组件来延长其使用寿命。此要求与为电厂设计的原始地板和工作空间设计背道而驰。给水加热器，桶，热交换器和其他很大的部件（50'+）和笨重的部件（20-100吨）可以通过组合使用脚轮和起重机来克服地面和空间的限制。这种行之有效的方法节省了仅标准起重机操作成本的75％以上，并显着降低了永久性地板损坏的可能性。空气脚轮运输系统外形小巧，易于插入工业加热器，交换器，变压器等下方。脚轮抬起组件并将其搬运到地板上，将数吨重的重量分散到整个表面区域，而不会损坏地板或组件。脚轮即使在最重的负载下也无摩擦，并显着降低了人体工程学风险，同时还提供了减少工作人员在地板上移动部件的好处。受控的驱动系统使单个操作员无需车轮或导轨即可轻松地全方位移动组件，并且定位在0.5英寸（13毫米）的精度内。用于移动重物的脚轮方法已被证明在现有核电站中有效。东京电力公司在2004年发表的ICONE论文。空气脚轮通常与起重机配合使用，大大降低了新安装和维修/翻新5000吨及以上组件所带来的物料搬运成本，空气脚轮采用普通压缩空气工作，移动很少零件，从而降低了日常维护成本。

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