IEC 62256:2017 RLV包含国际标准及其红线版本。红线版本只有英文版本。Redline版本为您提供了一种快速简单的方法来比较该标准与其前一版本之间的所有变化。红线版本不是IEC官方标准，只有标准的当前版本才被视为官方文件。 IEC 62256:2017涵盖所有尺寸和以下类型的涡轮机、蓄能泵和水泵水轮机:混流式；卡普兰；螺旋桨；冲击式（仅限涡轮机）和灯泡式涡轮机。 本文件还确定了可能影响涡轮机、存储泵或泵-涡轮机修复或受其影响的其他发电站设备，但没有详细讨论。本文件的目的是协助确定、评估和执行水轮机、蓄能泵和泵的修复和性能改进项目-涡轮机。业主、顾问和供应商可以使用本文件来定义:修复和性能改进的需求和经济性；工作范围；规格和结果评估。本文件旨在:帮助决策过程；关于康复的广泛信息来源；确定康复过程中的关键里程碑；以及确定在决策过程中要解决的点。本文件既不是详细的工程手册，也不是维护文件。这第二版取消并取代了2008年出版的第一版。本版构成技术修订版。与上一版相比，本版包括以下重大技术变化:表2至表23修改、完成并移至附录A；7.3.2:随文本变化而移动的子条款；关于温度、噪音、电偶腐蚀、磨损和未经评估更换部件的新子条款；7.3.3:完成关于剩余寿命的新子条款；将表29至32移至附件C；附有评估实例的新附件B。 关键词:水轮机，蓄能泵，水泵水轮机，修复，性能。

IEC 62256:2017 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.

IEC 62256:2017 covers turbines, storage pumps and pump-turbines of all sizes and of the following types: Francis; Kaplan; propeller; Pelton (turbines only) and bulb turbines.
This document also identifies without detailed discussion, other powerhouse equipment that could affect or be affected by a turbine, storage pump, or pump-turbine rehabilitation. The object of this document is to assist in identifying, evaluating and executing rehabilitation and performance improvement projects for hydraulic turbines, storage pumps and pump-turbines. This document can be used by owners, consultants, and suppliers to define: needs and economics for rehabilitation and performance improvement; scope of work; specifications and evaluation of results. This document is intended to be: an aid in the decision process; an extensive source of information on rehabilitation; an identification of the key milestones in the rehabilitation process; and identification of the points to be addressed in the decision processes. This document is not intended to be a detailed engineering manual nor a maintenance document. This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Tables 2 to 23 modified, completed and moved to Annex A; 7.3.2: subclauses moved with text changes; new subclauses on temperature, noise, galvanic corrosion, galling and replacement of components without assessment; 7.3.3: complete new subclause on residual life; Tables 29 to 32 moved to Annex C; New Annex B with assessment examples.

Key words: Turbines, Storage pump, Pump turbines, Rehabilitation, Performance.