International Standards and Conformity Assessment for all electrical, electronic and related technologies

 

Project

Reference EN 62364:2013
Title Hydraulic machines - Guide for dealing with hydro-abrasive erosion in Kaplan, Francis, and Pelton turbines
Project Number 23275
Abstract/Scope 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
Status
Published

Status

Current Stage code 6060
Current Stage code date 2013-08-30
Current Stage code deadline 2014-05-01
Deadline date for vote  

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Details

IEC Technical Body IEC/TC 4
Reference Document IEC 62364:2013 (EQV)
ICS 23.100.10 - Pumps and motors
27.140 - Hydraulic energy engineering
Keywords Hydraulic; Guide; Hydro-abrasive; Erosion; Turbine
Note 4/274/RVC established on 2012-03-30: FDIS decided*2013-07-05: Publication allocated to aclausse@cencenelec.eu
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Product Life Cycle
Information

History

Stage
Date
Deadline Date
Documents
6060 2013-08-30 2014-05-01 export to doc file  EN  FR  DE
5099 2013-08-01 2013-08-29  
5060 2013-05-13 2013-06-03 export to doc file  EN
5020 2013-03-08 2013-05-10  
3090 2012-03-30 2012-08-31  
5060 2011-05-30 2011-06-20 export to doc file  EN
5020 2010-12-24 2011-05-27  
1090 2010-12-21 2010-12-24  

Implementation Dates

date of Ratification (DOR) (1) 2013-08-01
date of Availability (DAV) (2) 2013-08-30
date of Announcement (DOA) (3) 2013-11-01
date of Publication (DOP) (4) 2014-05-01
date of Withdrawal (DOW) (5) 2016-08-01

Relations

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Normative reference (6)  

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved


(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat


(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level


(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement


(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn


(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.