SIST EN IEC 63132-6:2023
(Main)Guidance for installation procedures and tolerances of hydroelectric machines - Part 6: Vertical Pelton turbines (IEC 63132-6:2023)
Guidance for installation procedures and tolerances of hydroelectric machines - Part 6: Vertical Pelton turbines (IEC 63132-6:2023)
IEC 63132-6:2023 is to establish, in a general way, suitable procedures and tolerances for the installation of Pelton vertical turbines. This document presents a typical assembly and whenever the word "turbine" is used in this document, it refers to a vertical Pelton turbine. There are many possible ways to assemble a unit. The size of the machine, the design of the machine, the layout of the powerhouse or the delivery schedule of the components are some of the elements that could result in additional steps, or the elimination of some steps and/or assembly sequences.
Leitfaden für Installations-Prozeduren und -Toleranzen von hydroelektrischen Maschinen - Teil 6 (IEC 63132-6:2023)
Lignes directrices des procédures et tolérances d’installation des machines hydroélectriques - Partie 6: Turbines Pelton verticales (IEC 63132-6:2023)
IEC 63132-6:2023 a pour objet d’établir, d’une manière générale, des procédures et des tolérances appropriées pour l’installation des turbines verticales Pelton. Ce document présente un assemblage typique et chaque fois que le mot « turbine » est utilisé dans ce document, il fait référence à une turbine Pelton verticale. Il existe de nombreuses façons d’assembler une unité. La taille de la machine, la conception de la machine, la disposition de la centrale ou le calendrier de livraison des composants sont quelques-uns des éléments qui pourraient entraîner des étapes supplémentaires ou l’élimination de certaines étapes et / ou séquences d’assemblage
Navodila za postopke vgradnje in tolerance hidroelektričnih strojev - 6. del: Vertikalne Peltonove turbine (IEC 63132-6:2023)
Namen standarda IEC 63132-6:2023 je na splošno vzpostaviti ustrezne postopke in dovoljene tolerance za namestitev vertikalnih Peltonovih turbin. V tem dokumentu je predstavljen tipični sestav, izraz »turbina« pa se povsod navezuje na vertikalno Peltonovo turbino. Enoto je mogoče sestaviti na več načinov. Velikost in zasnova stroja, postavitev elektrarne ter razpored dobave komponent so nekateri od elementov, ki lahko zahtevajo dodatne korake ali odpravo nekaterih postopkov in/ali korakov sestavljanja.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 63132-6:2023
01-julij-2023
Navodila za postopke vgradnje in tolerance hidroelektričnih strojev - 6. del:
Vertikalne Peltonove turbine (IEC 63132-6:2023)
Guidance for installation procedures and tolerances of hydroelectric machines - Part 6:
Vertical Pelton turbines (IEC 63132-6:2023)
Leitfaden für Installations-Prozeduren und -Toleranzen von hydroelektrischen Maschinen
- Teil 6 (IEC 63132-6:2023)
Lignes directrices des procédures et tolérances d’installation des machines
hydroélectriques - Partie 6: Turbines Pelton verticales (IEC 63132-6:2023)
Ta slovenski standard je istoveten z: EN IEC 63132-6:2023
ICS:
27.140 Vodna energija Hydraulic energy engineering
SIST EN IEC 63132-6:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 63132-6:2023
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SIST EN IEC 63132-6:2023
EUROPEAN STANDARD EN IEC 63132-6
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2023
ICS 27.140
English Version
Guidance for installation procedures and tolerances of
hydroelectric machines - Part 6: Vertical Pelton turbines
(IEC 63132-6:2023)
Lignes directrices des procédures et tolérances Leitfaden für Installations-Prozeduren und -Toleranzen von
d'installation des machines hydroélectriques - Partie 6: hydroelektrischen Maschinen - Teil 6
Turbines Pelton verticales (IEC 63132-6:2023)
(IEC 63132-6:2023)
This European Standard was approved by CENELEC on 2023-05-19. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63132-6:2023 E
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SIST EN IEC 63132-6:2023
EN IEC 63132-6:2023 (E)
European foreword
The text of document 4/457/FDIS, future edition 1 of IEC 63132-6, prepared by IEC/TC 4 "Hydraulic
turbines" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN IEC 63132-6:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-02-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-05-19
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63132-6:2023 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 63132-1 NOTE Approved as EN IEC 63132-1
IEC 63132-2 NOTE Approved as EN IEC 63132-2
2
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SIST EN IEC 63132-6:2023
IEC 63132-6
®
Edition 1.0 2023-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Guidance for installation procedures and tolerances of hydroelectric machines –
Part 6: Vertical Pelton turbines
Lignes directrices des procédures et tolérances d’installation des machines
hydroélectriques –
Partie 6: Turbines Pelton verticales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.140 ISBN 978-2-8322-6782-0
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 63132-6:2023
– 2 – IEC 63132-6:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative reference . 6
3 Terms and definition . 6
4 Installation flowchart . 7
4.1 Turbine embedded parts . 7
4.2 Turbine mechanical parts . 8
5 Steps . 9
5.1 Turbine embedded parts . 9
5.1.1 Step 1: Benchmarks set-up . 9
5.1.2 Step 2: Installation of turbine housing foundations and embedded pipes . 9
5.1.3 Step 3: Turbine housing foundations embedment. 10
5.1.4 Step 4: Turbine housing foundation and workspace verification . 10
5.1.5 Step 5: Handing over to installation . 10
5.1.6 Step 6: Installation of the turbine housing . 10
5.1.7 Step 7: Handing over to concreting phase. 12
5.1.8 Step 8: Distribution pipe foundations embedment . 12
5.1.9 Step 9: Handing over to installation . 12
5.1.10 Step 10: Installation of the distribution pipe . 13
5.1.11 Step 11: Secondary embedded pipes installation around turbine housing
and distribution pipe . 14
5.1.12 Step 12: Distribution pipe pressurization and test . 14
5.1.13 Step 13: Handing over to concreting phase . 15
5.1.14 Step 14: Turbine housing and distribution pipe embedment . 15
5.1.15 Step 15: Handing over to installation . 16
5.1.16 Step 16: Turbine housing and distribution pipe dimensional inspection
after embedment . 16
5.1.17 Step 17: Installation of turbine housing cover . 16
5.1.18 Step 18: Installation of guide bearing support bracket . 17
5.1.19 Step 19: Handing over to concreting phase . 18
5.1.20 Step 20: Embedment up to generator floor . 18
5.1.21 Step 21: Handing over to installation . 18
5.1.22 Step 22: Guide bearing support bracket dimensional inspection after
embedment . 19
5.1.23 Step 23: Corrosion protection for embedded parts . 19
5.1.24 Step 24: Turbine embedded parts complete . 19
5.1.25 Step 25: Turbine mechanical parts Installation . 19
5.2 Turbine mechanical parts . 19
5.2.1 Step 1: Turbine embedded parts complete . 19
5.2.2 Step 2: Installation of turbine guide bearing housing . 19
5.2.3 Step 3: Installation of turbine shaft . 20
5.2.4 Step 4: Turbine shaft free . 20
5.2.5 Step 5: Generator installation . 21
5.2.6 Step 6: Unit alignment . 21
5.2.7 Step 7: Turbine guide bearing assembly and adjustment . 22
5.2.8 Step 8: Installation of rail system for turbine parts transportation . 22
5.2.9 Step 9: Installation of nozzles . 22
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5.2.10 Step 10: Installation of deflector systems . 23
5.2.11 Step 11: Installation of water guide shield . 24
5.2.12 Step 12: Installation of turbine runner . 24
5.2.13 Step 13: Remaining turbine parts installation completion . 24
5.2.14 Step 14: Cleaning, painting and inspection before initial tests . 25
5.2.15 Step 15: Turbine mechanical parts complete . 25
5.2.16 Step 16: Commissioning . 25
Bibliography . 26
Figure 1 – Generic installation flowchart – Pelton turbine embedded parts . 7
Figure 2 – Generic installation flowchart – Pelton turbine mechanical parts . 8
Figure 3 – Turbine housing installation . 11
Figure 4 – Distribution pipe installation . 13
Figure 5 – Nozzles installation . 23
Table 1 – Turbine housing measurements . 11
Table 2 – Distribution pipe measurements . 14
Table 3 – Turbine housing cover measurements . 17
Table 4 – Guide bearing support bracket measurements . 17
Table 5 – Shaft measurements . 20
Table 6 – Unit alignment measurements . 21
Table 7 – Nozzles measurements . 23
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– 4 – IEC 63132-6:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDANCE FOR INSTALLATION PROCEDURES AND
TOLERANCES OF HYDROELECTRIC MACHINES –
Part 6: Vertical Pelton turbines
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 63132-6 has been prepared by IEC technical committee 4: Hydraulic turbines. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
4/457/FDIS 4/465/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
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SIST EN IEC 63132-6:2023
IEC 63132-6:2023 © IEC 2023 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 63132 series, published under the general title Guidance for
installation procedures and tolerances of hydroelectric machines, can be found on the IEC
website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.
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SIST EN IEC 63132-6:2023
– 6 – IEC 63132-6:2023 © IEC 2023
GUIDANCE FOR INSTALLATION PROCEDURES AND
TOLERANCES OF HYDROELECTRIC MACHINES –
Part 6: Vertical Pelton turbines
1 Scope
The purpose of this document is to establish, in a general way, suitable procedures and
tolerances for the installation of Pelton vertical turbines. This document presents a typical
assembly and whenever the word "turbine" is used in this document, it refers to a vertical Pelton
turbine. There are many possible ways to assemble a unit. The size of the machine, the design
of the machine, the layout of the powerhouse or the delivery schedule of the components are
some of the elements that could result in additional steps, or the elimination of some steps
and/or assembly sequences.
It is understood that a publication of this type will be binding only if, and to the extent that, both
contracting parties have agreed upon it.
The document excludes matters of purely commercial interest, except those inextricably bound
up with the conduct of installation.
The tolerances in this document have been established upon best practices and experience,
although it is recognized that other standards are specifying different tolerances.
Wherever the document specifies that documents, drawings or information are supplied by a
manufacturer (or by manufacturers), each individual manufacturer will furnish the appropriate
information for their own supply only.
2 Normative reference
There are no normative references in this document.
3 Terms and definition
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
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SIST EN IEC 63132-6:2023
IEC 63132-6:2023 © IEC 2023 – 7 –
4 Installation flowchart
4.1 Turbine embedded parts
Figure 1 shows a generic installation flowchart for Pelton turbine embedded parts.
Figure 1 – Generic installation flowchart – Pelton turbine embedded parts
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4.2 Turbine mechanical parts
Figure 2 shows generic installation flowchart for Pelton turbine mechanical parts.
Figure 2 – Generic installation flowchart – Pelton turbine mechanical parts
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IEC 63132-6:2023 © IEC 2023 – 9 –
5 Steps
5.1 Turbine embedded parts
5.1.1 Step 1: Benchmarks set-up
a) Objective of work in the step
– Set-up benchmarks to be used for starting proper installation of the turbine and
generator.
b) Explanation of work
– Sufficient benchmarks should be provided to establish the unit centreline, axis and
elevation.
c) Recommendations
N/A
d) Additional information
Depending on the project delivery system (EPC, design build, etc.), the benchmarks or their
reference points could be provided by the owner, civil contractor, etc. Whoever provides
the benchmarks or reference points is responsible to make sure they are correct.
The benchmark type (x, y, z coordinates, defining axis and elevations, etc.) should be
agreed to prior to the work commencing.
The turbine supplier should take care of transferring the necessary benchmarks throughout
the erection and/or concreting processes so that the benchmarks remain accessible as the
unit is assembled.
5.1.2 Step 2: Installation of turbine housing foundations and embedded pipes
a) Objective of work in the step
– Install primary embedded pipes and turbine housing foundations in the correct locations.
b) Explanation of work
– Install the primary embedded pipes and supporting systems.
– Install the foundation components for turbine housing and rail system for turbine parts
transportation etc.
c) Recommendations
Different designs require different tolerances; therefore, the turbine supplier should provide
the tolerances. It is considered as a best practice to perform:
– NDT as applicable (i.e. visual inspections, pressure tests of the piping, test of welding
seams);
– measures to prevent the concrete from entering the pipes or contaminating the machined
surfaces of foundations during concreting.
d) Additional information
The contract should define which party is responsible to install the primary embedded pipes
and/or the foundation components.
Depending on the design, the rail system for turbine parts transportation may not require
foundation components.
Depending on the size of unit, a support column for platform might be installed in the water
passage below the turbine housing.
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5.1.3 Step 3: Turbine housing foundations embedment
a) Objective of work in the step
– Embed the turbine housing foundations and the pipes in primary concrete.
b) Explanation of work
– Embed the foundation components for turbine housing and rail system for turbine parts
transportation etc.
c) Recommendations
Care should be taken not to damage any of the embedded components or piping when
pouring concrete.
d) Additional information
Depending on the design, the rail system for turbine parts transportation may not require
the foundation components.
Depending on the size of unit, a support column for platform might be embedded in the
water passage below the turbine housing.
5.1.4 Step 4: Turbine housing foundation and workspace verification
a) Objective of work in the step
– Confirm that the turbine housing foundation has been installed in the correct place,
verifying that it is per the design and there is sufficient access to the workplace.
b) Explanation of work
– Once the workplace is acceptable, the turbine installation work can start.
c) Recommendations
Check that the foundation components of the turbine housing were installed within the
tolerances provided by the turbine supplier.
d) Additional information
N/A
5.1.5 Step 5: Handing over to installation
a) Objective of work in the step
– Transfer the workspace to the turbine supplier/installer.
b) Explanation of work
– There is normally an official transfer of the working area of the turbine housing from the
civil contractor to the turbine supplier/installer. Typically, the transfer is documented with
some type of signed form.
c) Recommendations
N/A
d) Additional information
N/A
5.1.6 Step 6: Installation of the turbine housing
a) Objective of work in the step
– Install the turbine housing (see Figure 3).
b) Explanation of work
– Transport the turbine housing segments to the foundation and place them on the
supports.
– Tack-weld of the turbine housing segments.
– Inspect the alignment and principal dimensions of the turbine housing before welding.
– Weld the turbine housing.
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IEC 63132-6:2023 © IEC 2023 – 11 –
– Inspect the alignment and principal dimensions of the turbine housing after welding.
– Install the inspection platform.
c) Recommendations
The items showed in Table 1 should be checked.
Figure 3 – Turbine housing installation
Table 1 – Turbine housing measurements
Minimum no. of
Item Tolerance Measurement location
measurements
To be determined by Inside walls of turbine
Concentricity Number of nozzles
turbine supplier housing
To be determined by Orientation of turbine
Orientation in plan 1
turbine supplier housing
To be determined by Top surface of turbine
Elevation Number of nozzles
turbine supplier housing
To be determined by Top surface of turbine
Level Number of nozzles
turbine supplier housing
– NDT of the welding seams
– Proper fixation of the turbine housing.
In addition to the above requirements, principal dimensions should be checked.
The tolerances and measurement locations of the principal dimensions are indicated in
turbine supplier drawings.
The turbine housing should be set concentric to the theoretical unit axis (benchmark) and
centreline.
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d) Additional information
The sequence for the installation of the turbine housing should be provided by the turbine
supplier.
Adequate supports or bracing are required to prevent the turbine housing from moving or
changing shape during placing of the secondary concrete.
5.1.7 Step 7: Handing over to concreting phase
a) Objective of work in the step
– Transfer the workspace to the civil contractor.
b) Explanation of work
– The turbine supplier should confirm that the turbine housing has been installed and
aligned properly and is ready for concreting.
– There is normally an official transfer of the working area of the turbine housing from the
turbine supplier to the civil contractor. Typically, the transfer is documented with some
type of signed form.
c) Recommendations
N/A
d) Additional information
N/A
5.1.8 Step 8: Distribution pipe foundations embedment
a) Objective of work in the step
– Install and embed distribution pipe foundations.
b) Explanation of work in the step
– Install the distribution pipe foundations.
– Embed the distribution pipe foundations and lower section of turbine housing.
c) Recommendations
– The concrete pour rate, pour/step heights and allowable differential levels should be
agreed among the concerned parties during the early stages of project development,
due to the critical impacts (to schedule and costs) related to the design and installation
of the turbine housing.
d) Additional information
Care should be taken when pouring concrete not to damage any of the embedded
components or piping.
5.1.9 Step 9: Handing over to installation
a) Objective of work in the step
– Transfer the workspace to the turbine supplier/installer.
b) Explanation of work
– There is normally an official transfer of the working area from the civil contractor to the
turbine supplier/installer. Typically, the transfer is documented with some types of signed
form.
c) Recommendations
N/A
d) Additional information
N/A
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5.1.10 Step 10: Installation of the distribution pipe
a) Objective of work in the step
– Install the distribution pipe (see Figure 4).
b) Explanation of work
– Transport and assemble distribution pipe segments.
– Align distribution pipe flanges (elevation, orientation, distance and offset).
– Install and weld steel plates between distribution pipe flanges to turbine housing.
c) Recommendations
The items showed in Table 2 should be checked.
Figure 4 – Distribution pipe installation
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Table 2 – Distribution pipe measurements
Minimum no. of
Item Tolerance Measurement location
measurements
To be determined by Elevation of distribution
Elevation Number of nozzles
turbine supplier pipe flange centre
To be determined by Orientation of distribution
Orientation Number of nozzles
turbine supplier pipe flanges
Distance of distribution
To be determined by
Distance Number of nozzles pipe flange s
...
SLOVENSKI STANDARD
oSIST prEN IEC 63132-6:2022
01-maj-2022
Navodila za postopke vgradnje in tolerance hidroelektričnih strojev - 6. del:
Vertikalne Peltonove turbine
Guide for installation procedures and tolerances of hydroelectric machines - Part 6:
Vertical Pelton turbines
Lignes directrices des procédures et tolérances d’installation des machines
hydroélectriques - Partie 6: Turbines Pelton verticales
Ta slovenski standard je istoveten z: prEN IEC 63132-6:2022
ICS:
27.140 Vodna energija Hydraulic energy engineering
oSIST prEN IEC 63132-6:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 63132-6:2022
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oSIST prEN IEC 63132-6:2022
4/433/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63132-6 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-03-25 2022-06-17
SUPERSEDES DOCUMENTS:
4/387/NP, 4/401A/RVN
IEC TC 4 : HYDRAULIC TURBINES
SECRETARIAT: SECRETARY:
Canada Mrs Christine Geraghty
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
TITLE:
Guide for installation procedures and tolerances of hydroelectric machines - Part 6: Vertical
Pelton turbines
PROPOSED STABILITY DATE: 2025
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1
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5 DRAFT
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15 GUIDANCE FOR INSTALLATION PROCEDURES AND
16 TOLERANCES OF HYDROELECTRIC MACHINES
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18
19 Part 6: Vertical Pelton turbines
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27 CONTENTS
28
29 FOREWORD
30 1 Scope . 7
31 2 Normative reference . 7
32 3 Terms and definition . 7
33 4 Installation flowchart . 8
34 4.1 Turbine embedded parts . 8
35 4.2 Turbine mechanical parts . 9
36 5 Steps . 10
37 5.1 Turbine embedded parts . 10
38 5.1.1 Step 1: Benchmarks set-up . 10
39 5.1.2 Step 2: Installation of turbine housing foundations and embedded
40 pipes . 10
41 5.1.3 Step 3: Turbine housing foundations embedment . 11
42 5.1.4 Step 4: Turbine housing foundation and workspace verification . 11
43 5.1.5 Step 5: Handing over to installation . 11
44 5.1.6 Step 6: Installation of the turbine housing . 12
45 5.1.7 Step 7: Handing over to concreting phase . 13
46 5.1.8 Step 8: Distribution pipe foundations embedment . 14
47 5.1.9 Step 9: Handing over to installation . 14
48 5.1.10 Step 10: Installation of the distribution pipe . 15
49 5.1.11 Step 11: Secondary embedded pipes installation around turbine
50 housing and distribution pipe . 16
51 5.1.12 Step 12: Distribution pipe pressurization and test . 17
52 5.1.13 Step 13: Handing over to concreting phase . 17
53 5.1.14 Step 14: Turbine housing and distribution pipe embedment . 18
54 5.1.15 Step 15: Handing over to installation . 18
55 5.1.16 Step 16: Turbine housing and distribution pipe dimensional
56 inspection after embedment . 18
57 5.1.17 Step 17: Installation of turbine housing cover . 19
58 5.1.18 Step 18: Installation of guide bearing support bracket . 19
59 5.1.19 Step 19: Handing over to concreting phase . 20
60 5.1.20 Step 20: Embedment up to generator floor. 20
61 5.1.21 Step 21: Handing over to installation . 21
62 5.1.22 Step 22: Guide bearing support bracket dimensional inspection after
63 embedment . 21
64 5.1.23 Step 23: Corrosion protection for embedded parts . 21
65 5.1.24 Step 24: Turbine embedded parts complete . 22
66 5.1.25 Step 25: Turbine mechanical parts Installation . 22
67 5.2 Turbine mechanical parts . 23
68 5.2.1 Step 1: Turbine embedded parts complete . 23
69 5.2.2 Step 2: Installation of turbine guide bearing housing . 23
70 5.2.3 Step 3: Installation of turbine shaft . 23
71 5.2.4 Step 4: Turbine shaft free . 24
72 5.2.5 Step 5: Generator installation . 24
73 5.2.6 Step 6: Unit alignment . 24
74 5.2.7 Step 7: Turbine guide bearing assembly and adjustment . 25
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75 5.2.8 Step 8: Installation of rail system for turbine parts transportation . 26
76 5.2.9 Step 9: Installation of nozzles . 27
77 5.2.10 Step 10: Installation of deflector systems . 28
78 5.2.11 Step 11: Installation of water guide shield . 28
79 5.2.12 Step 12: Installation of turbine runner . 29
80 5.2.13 Step 13: Remaining turbine parts installation completion . 29
81 5.2.14 Step 14: Cleaning, painting and inspection before initial tests . 29
82 5.2.15 Step 15: Turbine mechanical parts complete . 30
83 5.2.16 Step 16: Commissioning . 30
84
85
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86 INTERNATIONAL ELECTROTECHNICAL COMMISSION
87 ____________
88
89 GUIDANCE FOR INSTALLATION PROCEDURES AND TOLERANCES OF
90 HYDROELECTRIC MACHINES
91
92 Part 6: VERTICAL PELTON TURBINES
93
94 FOREWORD
95 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
96 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
97 international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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104 agreement between the two organizations.
105 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
106 consensus of opinion on the relevant subjects since each technical committee has representation from all
107 interested IEC National Committees.
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118 services carried out by independent certification bodies.
119 6) All users should ensure that they have the latest edition of this publication.
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123 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
124 Publications.
125 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced p ublications is
126 indispensable for the correct application of this publication.
127 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
128 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
129 This Guide has been prepared by IEC technical committee No.4: Hydraulic turbines.XX:
130 The text of this guide is based on the following documents:
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD
131
132 Full information on the voting for the approval of this guide can be found in the report on
133 voting indicated in the above table.
134 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
135 A list of all parts in the IEC 63132 series, published under the general title Guidance for
136 installation procedures and tolerances of hydroelectric machines, can be found on the IEC
137 website.
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138 The committee has decided that the contents of this publication will remain unchanged until
139 the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
140 related to the specific publication. At this date, the publication will be
141
142 • reconfirmed,
143 • withdrawn,
144 • replaced by a revised edition, or
145 • amended.
146
147 IMPORTANT – The “colour inside” logo on the cover page of this publication indicates that it
148 contains colours which are considered to be useful for the correct understanding of its content
149
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150 GUIDE FOR INSTALLATION PROCEDURES AND TOLERANCES OF
151 HYDROELECTRIC MACHINES-
152
153 Part 6: Vertical Pelton turbines
154
155 1 Scope
156 The purpose of this guide is to establish, in a general way, suitable procedures and
157 tolerances for the installation of Pelton vertical turbines. This guide presents a typical
158 assembly and whenever the word “turbine” is used in this part, it refers to a vertical Pelton
159 turbine. There are many possible ways to assemble a unit. The size of the machine, the
160 design of the machine, the layout of the powerhouse or the delivery schedule of the
161 components are some of the elements that could result in additional steps, or the elimination
162 of some steps and/or assembly sequences.
163 It is understood that a publication of this type will be binding only if, and to the extent that,
164 both contracting parties have agreed upon it.
165 The guide excludes matters of purely commercial interest, except those inextricably bound up
166 with the conduct of installation.
167 The tolerances in this guide have been established upon Best Practices and experience,
168 although it is recognized that other standards are specifying different tolerances
169 Wherever the guide specifies that documents, drawings or information shall be supplied by a
170 manufacturer (or by manufacturers), each individual manufacturer shall be required to furnish
171 the appropriate information for their own supply only.
172
173 2 Normative reference
174 There are no normative references in this document.
175
176 3 Terms and definition
177 No terms and definitions are listed in this document.
178 ISO and IEC maintain terminological databases for use in standardization at the following
179 addresses:
180 • IEC Electropedia: available at http://www.electropedia.org/
181 • ISO Online browsing platform: available at http://www.iso.org/obp
182
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183 4 Installation flowchart
184 4.1 Turbine embedded parts
185 Figure 1 shows generic installation flowchart for Pelton turbine embedded parts.
186
187 Figure 1 – Generic installation flowchart – Pelton turbine embedded parts
188
189
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190 4.2 Turbine mechanical parts
191 Figure 2 shows generic installation flowchart for Pelton turbine mechanical parts.
192
193 Figure 2 – Generic installation flowchart – Pelton turbine mechanical parts
194
195
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196 5 Steps
197 5.1 Turbine embedded parts
198 5.1.1 Step 1: Benchmarks set-up
199 a) Objective of work in the step
200 – Set-up benchmarks to be used for starting proper installation of the turbine and
201 generator.
202 b) Explanation of work
203 – Sufficient benchmarks should be provided to establish the unit centreline, axis and
204 elevation.
205 c) Recommendations
206 N/A
207 d) Additional Information
208 Depending on the project delivery system (EPC, Design Build, etc.), the benchmarks or their
209 reference points could be provided by the owner, civil contractor, etc. Whoever provides the
210 benchmarks or reference points is responsible to make sure they are correct.
211 The benchmark type (x, y, z coordinates, defining axis and elevations, etc.) should be agreed
212 to prior to the work commencing.
213 The turbine supplier should take care to transfer the necessary benchmarks throughout the
214 erection and/or concreting processes so that the benchmarks remain accessible as the unit is
215 assembled.
216
217 5.1.2 Step 2: Installation of turbine housing foundations and embedded pipes
218 a) Objective of work in the step
219 – Install primary embedded pipes and turbine housing foundations in the correct
220 locations.
221 b) Explanation of work
222 – Install the primary embedded pipes and supporting systems.
223 – Install the foundation components for turbine housing and rail system for turbine parts
224 transportation etc.
225 c) Recommendations
226 Different designs require different tolerances; therefore, it is recommended that the turbine
227 supplier should provide the tolerances. It is considered as a best practice to perform:
228 – NDT as applicable (i.e. Visual inspections, pressure tests of the piping, test of wel ding
229 seams).
230 – Measures to prevent the concrete from entering the pipes or contaminating the
231 machined surfaces of foundations during concreting.
232 d) Additional Information
233 The contract should define which party is responsible to install the primary embedded pipes
234 and/or the foundation components.
235 Depending on the design, the rail system for turbine parts transportation may not require
236 foundation components.
237 Depending on the size of unit, a support column for platform might be installed in the water
238 passage below the turbine housing.
239
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240 5.1.3 Step 3: Turbine housing foundations embedment
241 a) Objective of work in the step
242 – Embed the turbine housing foundations and the pipes in primary concrete.
243 b) Explanation of work
244 – Embed the foundation components for turbine housing and rail system for turbine parts
245 transportation etc.
246 c) Recommendations
247 Care should be taken not to damage any of the embedded components or piping when
248 pouring concrete.
249 d) Additional Information
250 Depending on the design, the rail system for turbine parts transportation may not require the
251 foundation components.
252 Depending on the size of unit, a support column for platform might be embedded in the water
253 passage below the turbine housing.
254
255 5.1.4 Step 4: Turbine housing foundation and workspace verification
256 a) Objective of work in the step
257 – Confirm that the turbine housing foundation has been installed in the correct place,
258 verifying that it is per the design and there is sufficient access to the workplace.
259 b) Explanation of work
260 – Once the workplace is acceptable the turbine installation work can start.
261 c) Recommendations
262 Check that the foundation components of the turbine housing were installed within the
263 tolerances provided by the turbine supplier.
264 d) Additional Information
265 N/A
266
267 5.1.5 Step 5: Handing over to installation
268 a) Objective of work in the step
269 – Transfer the workspace to the turbine supplier/installer.
270 b) Explanation of work
271 – There is normally an official transfer of the working area of the turbine housing from
272 the civil contractor to the turbine supplier/installer. Typically, the transfer is
273 documented with some type of signed form.
274 c) Recommendations
275 N/A
276 d) Additional Information
277 N/A
278
279
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280 5.1.6 Step 6: Installation of the turbine housing
281 a) Objective of work in the step
282 – Install the turbine housing (see Figure 3).
283 b) Explanation of work
284 – Transport the turbine housing segments to the foundation and placing them on the
285 supports.
286 – Tack-weld of the turbine housing segments.
287 – Inspect the alignment and principal dimensions of the turbine housing before welding.
288 – Weld the turbine housing.
289 – Inspect the alignment and principal dimensions of the turbine housing after welding.
290 – Install the inspection platform.
291 c) Recommendations
292 The items showed in Table 1 should be checked.
293 Table 1 – Turbine housing measurements
Minimum No. of
Item Tolerance Measurement location
measurements
To be determined by
Concentricity Number of nozzles Inside walls of turbine housing
turbine supplier
To be determined by
Orientation in plan 1 Orientation of turbine housing
turbine supplier
To be determined by
Elevation Number of nozzles Top surface of turbine housing
turbine supplier
To be determined by
Level Number of nozzles Top surface of turbine housing
turbine supplier
294 – NDT of the welding seams
295 – Proper fixation of the turbine housing.
296 In addition to the above requirements, principal dimensions should be checked.
297 The tolerances and measurement locations of the principal dimensions are indicated in
298 turbine supplier drawings.
299 The turbine housing should be set concentric to the theoretical unit axis (benchmark) and
300 centreline.
301 d) Additional Information
302 The sequence for the installation of the turbine housing should be provided by the turbine
303 supplier.
304 Adequate supports or bracing are required to prevent the turbine housing from moving or
305 changing shape during placing of the secondary concrete.
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Orientation in plan
Concentricity
Turbine housing
306
307 Figure 3 – Turbine housing installation
308
309 5.1.7 Step 7: Handing over to concreting phase
310 a) Objective of work in the step
311 – Transfer the workspace to the civil contractor.
312 b) Explanation of work
313 – The turbine supplier should confirm that the turbine housing has been installed and
314 aligned properly and is ready for concreting.
315 – There is normally an official transfer of the working area of the turbine housing from
316 the turbine supplier to the civil contractor. Typically, the transfer is documented with
317 some type of signed form.
318 c) Recommendations
319 N/A
320 d) Additional Information
321 N/A
322
323
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324 5.1.8 Step 8: Distribution pipe foundations embedment
325 a) Objective of work in the step
326 – Install and embed distribution pipe foundations.
327 b) Explanation of work in the step
328 – Install the distribution pipe foundations.
329 – Embed the distribution pipe foundations and lower section of turbine housing.
330 c) Recommendations
331 – The concrete pour rate, pour/step heights and allowable differential levels should be
332 agreed among the concerned parties during the early stages of project development,
333 due to the critical impacts (to schedule and costs) related to the design and installation
334 of the turbine housing.
335 d) Additional Information
336 Care should be taken when pouring concrete not to damage any of the embedded
337 components or piping.
338
339 5.1.9 Step 9: Handing over to installation
340 a) Objective of work in the step
341 – Transfer the workspace to the turbine supplier/installer.
342 b) Explanation of work
343 – There is normally an official transfer of the working area from the civil contractor to the
344 turbine supplier/installer. Typically, the transfer is documented with some types of
345 signed form.
346 c) Recommendations
347 N/A
348 d) Additional Information
349 N/A
350
351
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352 5.1.10 Step 10: Installation of the distribution pipe
353 a) Objective of work in the step
354 – Install the distribution pipe (see Figure 4).
355 b) Explanation of work
356 – Transport and assemble distribution pipe segments.
357 – Align distribution pipe flanges. (elevation, orientation, distance and offset)
358 – Install and weld steel plates between distribution pipe flanges to turbine housing.
359 c) Recommendations
360 The items showed in Table 2 should be checked.
361 Table 2 – Distribution pipe measurements
Minimum No. of
Item Tolerance Measurement location
measurements
To be determined by turbine Elevation of distribution pipe
Elevation Number of nozzles
supplier flange centre
To be determined by turbine Orientation of distribution pipe
Orientation Number of nozzles
supplier flanges
To be determined by turbine Distance of distribution pipe
Distance Number of nozzles
supplier flange surfaces to turbine centre
To be determined by turbine Offset of distribution pipe flange
Offset Number of nozzles
supplier centre to turbine centre
362 – NDT of the welding seams
363 – Proper fixation of the turbine housing.
364 In addition to the above requirements, principal dimensions should be checked.
365 The tolerances and measurement locations of the principal dimensions are indicated in
366 turbine supplier drawings.
367 d) Additional Information
368 Orientation and distance of distribution pipe flanges shall be adjusted by adaption plates
369 between nozzle and distribution pipes.
370 Several measurement methods of distribution pipe position are existing. (i.e. laser tracker,
371 measuring templates etc.).
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Orientation
Distribution pipe
Distance
Offset
372
373 Figure 4 – Distribution pipe installation
374
375 5.1.11 Step 11: Secondary embedded pipes installation around turbine housing and
376 distribution pipe
377 a) Objective of work in the step
378 – Install the embedded pipes.
379 b) Explanation of work
380 – Install the pipes around the turbine housing and distribution pipe before final
381 concreting.
382 c) Recommendations
383 NDT (i.e. Visual inspections, pressure tests, test of welding seams) and dimensional checks
384 of the pipe locations should be performed.
385 The following preventive measures should be considered:
386 – Support the pipes so they cannot move or be damaged during concreting
387 – Cover/block pipe openings to prevent concrete from entering the pipes during
388 concreting.
389 d) Additional Information
390 N/A
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391
392 5.1.12 Step 12: Distribution pipe pressurization and test
393 a) Objective of work in the step
394 – Check the deformation and integrity (water tightness) of the distribution pipe when
395 pressurized.
396 – Relieve some local high stresses in the welds which will improve the fatigue life of the
397 distribution pipe.
398 b) Explanation of work
399 – Close the inlet flange and all nozzle outlet flanges of the distribution pipe with
400 temporary covers.
401 – Fill the distribution pipe with water.
402 – Pressurize the distribution pipe.
403 – Check for leaks.
404 c) Recommendations
405 150% of the design head is generally used for the pressure test. The test pressure, duration
406 and parameters should be provided by the turbine supplier.
407 d) Additional Information
408 Depending on the civil and mechanical design, the pressure test may not be required.
409 The turbine supplier typically supplies a pressurization procedure which defines the number of
410 steps, the duration of each step, the pressures of each step, etc.
411 In order to make it easier to detect any leakage, it is helpful to control the water temperature
412 to be higher than the ambient air dew point to avoid water condensation on the surfaces.
413 However, depending on the size of the distribution pipe
...
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