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EN 62364:2013

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Hydraulic machines - Guide for dealing with hydro-abrasive erosion in Kaplan, Francis, and Pelton turbines

Superseded date

21-03-2019

Superseded by

EN IEC 62364:2019

Published date

30-08-2013

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FOREWORD
INTRODUCTION
1 Scope
2 Terms, definitions and symbols
3 Abrasion rate
4 Design
5 Abrasion resistant materials
6 Guidelines on insertions into specifications
Annex A (informative) - PL calculation example
Annex B (informative) - Measuring and recording
        abrasion damages
Annex C (informative) - Water sampling procedure
Annex D (informative) - Procedures for analysis of
        particle concentration, size, hardness and
        shape
Annex E (informative) - Tests of abrasion resistant
        materials
Annex F (informative) - Typical criteria to determine
       overhaul time due to abrasion erosion
Annex G (informative) - Example to calculate the
        amount of erosion in the full model
Annex H (informative) - Examples to calculate the
        TBO in the reference model
Bibliography

IEC 62364:2013 serves to present data on particle abrasion rates on several combinations of water quality, operating conditions, component materials, and component properties collected from a variety of hydro sites; develop guidelines for the methods of minimizing particle abrasion by modifications to hydraulic design for clean water. These guidelines do not include: - details such as hydraulic profile shapes which should be determined by the hydraulic design experts for a given site; - develop guidelines based on 'experience data' concerning the relative resistance of materials faced with particle abrasion problems; - develop guidelines concerning the maintainability of abrasion resistant materials and hard facing coatings; - develop guidelines on a recommended approach, which owners could and should take to ensure that specifications communicate the need for particular attention to this aspect of hydraulic design at their sites without establishing criteria which cannot be satisfied because the means are beyond the control of the manufacturers - and develop guidelines concerning operation mode of the hydro turbines in water with particle materials to increase the operation life. It is assumed that the water is not chemically aggressive. Since chemical aggressiveness is dependent upon so many possible chemical compositions, and the materials of the machine, it is beyond the scope of this Guide to address these issues. It is assumed that cavitation is not present in the turbine. Cavitation and abrasion may reinforce each other so that the resulting erosion is larger than the sum of cavitation erosion plus abrasion erosion. The quantitative relationship of the resulting abrasion is not known and it is beyond the scope of this guide to assess it, except to recommend that special efforts be made in the turbine design phase to minimize cavitation. Large solids (e.g. stones, wood, ice, metal objects, etc.) traveling with the water may impact turbine components and produce damage. This damage may in turn increase the flow turbulence thereby accelerating wear by both cavitation and abrasion. Abrasion resistant coatings can also be damaged locally by impact of large solids. It is beyond the scope of this Guide to address these issues. Key words: hydraulic, turbines, hydro-abrasive erosion

Committee
CLC/SR 4
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Superseded
SupersededBy

Standards Relationship
NF EN 62364 : 2013 Identical
IEC 62364:2013 Identical
CEI EN 62364 : 2014 Identical
BS EN 62364:2013 Identical
NEN EN IEC 62364 : 2013 Identical
I.S. EN 62364:2013 Identical
PN EN 62364 : 2014 Identical
NBN EN 62364 : 2013 Identical
UNE-EN 62364:2013 Identical
BS EN 60695-11-20:2015 Identical
PNE-FprEN 62364 Identical

ISO 4365:2005 Liquid flow in open channels Sediment in streams and canals Determination of concentration, particle size distribution and relative density
IEC TR 61364:1999 Nomenclature for hydroelectric powerplant machinery
IEC 60193:1999 Hydraulic turbines, storage pumps and pump-turbines - Model acceptance tests
ASTM G 76 : 2013-07 TEST METHOD FOR CONDUCTING EROSION TESTS BY SOLID PARTICLE IMPINGEMENT USING GAS JETS
IEC 60609-2:1997 Cavitation pitting evaluation in hydraulic turbines, storage pumps and pump-turbines - Part 2: Evaluation in Pelton turbines

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