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

Published date

01-09-2017

Publisher

European Committee for Standards - Electrical

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

NEW!IEC 62256:2017 is available as IEC 62256:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.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	CLC/SR 4
DocumentType	Standard
PublisherName	European Committee for Standards - Electrical
Status	Current

Standards	Relationship
UNE-EN 62256:2017	Identical
IEC 62256:2017	Identical
BS EN 62256:2017	Identical
I.S. EN 62256:2017	Identical
PN EN 62256 : 2017	Identical
NEN EN IEC 62256 : 2017	Identical
NBN EN 62256 : 2009	Identical
CEI EN 62256:2018	Identical
CEI EN 62256 : 2009	Identical
IEC 62256 : 2.0	Identical
NF EN 62256 : 2008	Identical
UNE-EN 62256:2017	Identical
OVE EN 62256:2023 05 01	Identical
SN EN 62256 : 2017	Identical

ASME PV CODE 8 DIV 2 : 2017	BOILER AND PRESSURE VESSEL CODE - RULES FOR CONSTRUCTION OF PRESSURE VESSELS DIVISION 2- ALTERNATIVE RULES
IEC 60545:1976	Guide for commissioning, operation and maintenance of hydraulic turbines
ASME PV CODE 8 DIV 1 : 2017	BOILER AND PRESSURE VESSEL CODE - RULES FOR CONSTRUCTION OF PRESSURE VESSELS DIVISION 1
IEC TR 61366-3:1998	Hydraulic turbines, storage pumps and pump-turbines - Tendering documents - Part 3: Guidelines for technical specifications for Pelton turbines
IEC TR 61364:1999	Nomenclature for hydroelectric powerplant machinery
IEC TR 61366-1:1998	Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 1: General and annexes
IEC TR 61366-6:1998	Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 6: Guidelines for technical specifications for pump-turbines
ISO 1940-1:2003	Mechanical vibration Balance quality requirements for rotors in a constant (rigid) state Part 1: Specification and verification of balance tolerances
ISO 10816-5:2000	Mechanical vibration Evaluation of machine vibration by measurements on non-rotating parts Part 5: Machine sets in hydraulic power generating and pumping plants
IEC 62364:2013	Hydraulic machines - Guide for dealing with hydro-abrasive erosion in Kaplan, Francis and Pelton turbines
IEC 60193:1999	Hydraulic turbines, storage pumps and pump-turbines - Model acceptance tests
IEEE 810-2015	IEEE Standard for Hydraulic Turbine and Generator Shaft Couplings and Shaft Runout Tolerances
IEC 60041:1991	Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines
ISO 7919-5:2005	Mechanical vibration Evaluation of machine vibration by measurements on rotating shafts Part 5: Machine sets in hydraulic power generating and pumping plants
IEC TR 61366-2:1998	Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 2: Guidelines for technical specifications for Francis turbines
ASTM E 125 : 1963 : R2003	Standard Reference Photographs for Magnetic Particle Indications on Ferrous Castings
ASTM E 709 : 2015 : REDLINE	Standard Guide for Magnetic Particle Testing
IEC TR 61366-4:1998	Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 4: Guidelines for technical specifications for Kaplan and propeller turbines
AWS D1.1/D1.1M : 2015	STRUCTURAL WELDING CODE-STEEL
IEC TR 61366-7:1998	Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 7: Guidelines for technical specifications for storage pumps
IEC TR 61366-5:1998	Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 5: Guidelines for technical specifications for tubular turbines
IEC 62097:2009	Hydraulic machines, radial and axial - Performance conversion method from model to prototype