BS EN IEC 62364:2019 - Hydraulic machines. Guidelines for dealing with hydro-abrasive erosion in kaplan, francis, and pelton turbines

BS EN IEC 62364:2019

Hydraulic machines. Guidelines for dealing with hydro-abrasive erosion in kaplan, francis, and pelton turbines

Status : Current   Published : March 2019

Format
PDF

Format
HARDCOPY



IEC 62364:2019 is available as

IEC 62364:2019 RLV

which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.



IEC 62364:2019 gives guidelines for:
a) presenting data on hydro-abrasive erosion rates on several combinations of water quality, operating conditions, component materials, and component properties collected from a variety of hydro sites;
b) developing guidelines for the methods of minimizing hydro-abrasive erosion by modifications to hydraulic design for clean water. These guidelines do not include details such as hydraulic profile shapes which are determined by the hydraulic design experts for a given site;
c) developing guidelines based on “experience data” concerning the relative resistance of materials faced with hydro-abrasive erosion problems;
d) developing guidelines concerning the maintainability of materials with high resistance to hydro-abrasive erosion and hardcoatings;
e) developing 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;
f) developing guidelines concerning operation mode of the hydro turbines in water with particle materials to increase the operation life.
It is assumed in this document 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 document to address these issues. It is assumed in this document that cavitation is not present in the turbine. Cavitation and hydro-abrasive erosion can reinforce each other so that the resulting erosion is larger than the sum of cavitation erosion plus hydro-abrasive erosion. The quantitative relationship of the resulting hydro-abrasive erosion is not known and it is beyond the scope of this document to assess it, except to suggest 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 can impact turbine components and produce damage. This damage can in turn increase the flow turbulence thereby accelerating wear by both cavitation and hydro-abrasive erosion. Hydro-abrasive erosion resistant coatings can also be damaged locally by impact of large solids. It is beyond the scope of this document to address these issues. This document focuses mainly on hydroelectric powerplant equipment. Certain portions can also be applicable to other hydraulic machines. This second edition cancels and replaces the first edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) the formula for TBO in Pelton reference model has been modified;
b) the formula for calculating sampling interval has been modified;
c) the chapter in hydro-abrasive erosion resistant coatings has been substantially modified;
d) the annex with test data for hydro-abrasive erosion resistant materials has been removed;
e) a simplified hydro-abrasive erosion evaluation has been added.

Key words: Hydraulic Machines, Hydro-Abrasive Erosion, Kaplan, Francis, Pelton Turbines.




Standard NumberBS EN IEC 62364:2019
TitleHydraulic machines. Guidelines for dealing with hydro-abrasive erosion in kaplan, francis, and pelton turbines
StatusCurrent
Publication Date21 March 2019
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)ISO 2178, EN ISO 6507-1, ISO 4288, ISO 6507-1, IEC 60041, ASTM G76:1995, EN ISO 4288, EN ISO 2178, EN 60041, IEC TR 61364, ASTM C633 - 13, EN ISO 14916:2017, EN 60193 (IEC 60193:1999), IEC 60193:1999, ISO 4365:2005, ISO 14916:2017, ASTM B499 - 09, ISO 11657:2014, EN 60609-2:1999, IEC 60609-2:1997
ReplacesBS EN 62364:2013
International RelationshipsEN IEC 62364:2019,IEC 62364:2019
Draft Superseded By17/30338675 DC
DescriptorsHydraulic equipment, Approval testing, Acoustic measurement, Water turbines, Performance, Electric machines, Turbines, Consumer-supplier relations, Vibration measurement, Commissioning, Noise (environmental), Electric generators, Contracts, Hydroelectric power stations, Performance testing, Guarantees, Equipment safety
ICS23.100.10
27.140
Title in FrenchMachines hydrauliques. Lignes directrices relatives au traitement de l'érosion hydro-abrasive des turbines kaplan, francis et pelton
Title in GermanWasserturbinen. Leitfaden für den Umgang mit hydroabrasiver Erosion in Kaplan-, Francis und Pelton-Turbinen
CommitteeMCE/15
ISBN978 0 580 93587 9
PublisherBSI
FormatA4
DeliveryYes
Pages78
File Size2.52 MB
Price£274.00


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