IEC 62256:2017
Current
The latest, up-to-date edition.
Hydraulic turbines, storage pumps and pump-turbines - Rehabilitation and performance improvement
Hardcopy , PDF
English, English - French
30-05-2017
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and nomenclature
4 Reasons for rehabilitating
5 Phases of a rehabilitation project
6 Scheduling, cost analysis and risk analysis
7 Assessment and determination of scope of the work
8 Hydraulic design and performance testing options
9 Specifications
Annex A (informative) - Check-list for evaluation of
existing turbine
Annex B (informative) - Assessment examples
Annex C (informative) - Checklist for evaluation of
related equipment
Bibliography
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.
| Committee |
TC 4
|
| DevelopmentNote |
Stability Date: 2020. (06/2017)
|
| DocumentType |
Standard
|
| Pages |
158
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| BS EN 62256:2017 | Identical |
| CEI EN 62256 : 2009 | Identical |
| EN 62256:2017 | Identical |
| PN EN 62256 : 2017 | Identical |
| NEN EN IEC 62256 : 2017 | Identical |
| I.S. EN 62256:2017 | Equivalent |
| UNE-EN 62256:2017 | Identical |
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