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IEC 62256 Ed. 2.0 en:2017

Hydraulic turbines, storage pumps and pump-turbines - Rehabilitation and performance improvement
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IEC 62256 Ed. 2.0 en:2017

Hydraulic turbines, storage pumps and pump-turbines - Rehabilitation and performance improvement

PUBLISH DATE 2017
PAGES 162
IEC 62256 Ed. 2.0 en:2017

Hydraulic turbines, storage pumps and pump-turbines - Rehabilitation and performance improvement

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.

SDO IEC: International Electrotechnical Commission
Document Number IEC 62256
Publication Date May 1, 2017
Language en - English
Page Count
Revision Level 2.0
Supercedes
Committee 4
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