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 61366-3:1998, which is a technical report, is intended to assist in the preparation of Tendering documents and Tendering proposals and in the evaluation of tenders for hydraulic machines. This part of IEC 61366 provides guidelines for Pelton turbines.

General Information

• Status: Published
• Publication Date: 10-Mar-1998
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: TC 4 - Hydraulic turbines
• Drafting Committee: WG 19 - TC 4/WG 19
• Current Stage: PPUB - Publication issued
• Start Date: 31-Jan-1998
• Completion Date: 11-Mar-1998

Standards Content (Sample)

TECHNICAL
IEC
REPORT
61366-3
First edition
1998-03
Hydraulic turbines, storage pumps
and pump-turbines –
Tendering documents –
Part 3:
Guidelines for technical specifications
for Pelton turbines
Turbines hydrauliques, pompes d’accumulation
et pompes-turbines –
Documents d’appel d’offres –
Partie 3:
Guide des spécifications techniques pour les turbines Pelton
Reference number
IEC 61366-3:1998(E)
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
Consolidated publications
Consolidated versions of some IEC publications including amendments are
available. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the
base publication, the base publication incorporating amendment 1 and the base
publication incorporating amendments 1 and 2.
Validity of this publication
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology.
Information relating to the date of the reconfirmation of the publication is available
in the IEC catalogue.
Information on the revision work, the issue of revised editions and amendments may
be obtained from IEC National Committees and from the following IEC sources:
• IEC Bulletin
• IEC Yearbook
On-line access*
• Catalogue of IEC publications
Published yearly with regular updates
(On-line access)*
Terminology, graphical and letter symbols
For general terminology, readers are referred to IEC 60050: International
Electrotechnical Vocabulary (IEV).
For graphical symbols, and letter symbols and signs approved by the IEC for
general use, readers are referred to publications IEC 60027: Letter symbols to be
used in electrical technology, IEC 60417: Graphical symbols for use on equipment.
Index, survey and compilation of the single sheets Graphical symbols
and IEC 60617:
for diagrams.
IEC publications prepared by the same technical committee
The attention of readers is drawn to the end pages of this publication which list the
IEC publications issued by the technical committee which has prepared the present
publication.
* See web site address on title page.

TECHNICAL
IEC
REPORT – TYPE 3
61366-3
First edition
1998-03
Hydraulic turbines, storage pumps
and pump-turbines –
Tendering documents –
Part 3:
Guidelines for technical specifications
for Pelton turbines
Turbines hydrauliques, pompes d’accumulation
et pompes-turbines –
Documents d’appel d’offres –
Partie 3:
Guide des spécifications techniques pour les turbines Pelton
 IEC 1998  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
V
International Electrotechnical Commission
For price, see current catalogue

– 2 – 61366-3 IEC:1998(E)
CONTENTS
Page
FOREWORD . 4
Clause
0 Introduction to technical specifications . 7
1 Scope. 9
2 Reference documents . 9
3 Technical requirements. 9
3.1 Scope of work. 9
3.2 Limits of the contract . 10
3.3 Supply by Employer . 10
3.4 Design conditions . 11
3.5 Technical performance and other guarantees. 14
3.6 Mechanical design criteria . 17
3.7 Design documentation . 17
3.8 Materials and construction . 18
3.9 Shop inspection and testing . 19
4 Technical specifications for fixed/embedded components. 20
4.1 Manifold . 21
4.2 Turbine housing. 21
5 Technical specifications for stationary/removable components . 22
5.1 Branch pipe (including intake pipe and nozzle pipe). 22
5.2 Upper turbine housing (if not embedded). 22
5.3 Turbine cover . 23
5.4 Brake jet assembly . 23
6 Technical specifications for injector/deflector system . 23
6.1 Injector system . 23
6.2 Deflector system. 24
7 Technical specifications for rotating parts, guide bearings and seals . 24
7.1 Runner . 24
7.2 Main shaft . 25
7.3 Turbine guide bearing. 25
7.4 Main shaft seal (if necessary) . 25
7.5 Standstill maintenance seal (if necessary). 26

61366-3 © IEC:1998(E) – 3 –
Clause Page
8 Technical specifications for thrust bearing (when specified as part of the
hydraulic machine). 26
8.1 Design data . 26
8.2 Bearing support . 26
8.3 Bearing assembly . 26
8.4 Oil injection pressure system . 27
9 Technical specifications for miscellaneous components . 27
9.1 Walkways, access platforms and stairs . 27
9.2 Lifting fixtures. 27
9.3 Special tools. 27
9.4 Standard tools . 27
9.5 Turbine pit hoist. 27
9.6 Nameplate. 27
9.7 Runner cart and rails (if required) . 28
9.8 Access door to turbine housing interior (if required). 28
10 Technical specifications for auxiliary systems. 28
10.1 Bearing lubrication system . 28
10.2 Cooling water system for runner. 28
10.3 Tailwater air admission system . 28
10.4 Turbine pit drainage. 28
11 Technical specifications for instrumentation . 29
11.1 Controls. 29
11.2 Indication. 29
11.3 Protection. 29
12 Spare parts. 29
13 Model acceptance tests . 29
14 Site installation and commissioning tests . 30
14.1 General . 30
14.2 Installation procedures. 30
14.3 Tests during installation . 31
14.4 Commissioning tests. 31
15 Field acceptance tests . 31
15.1 Scope and reports . 31
15.2 Inspection of cavitating pitting. 31

– 4 – 61366-3 IEC:1998(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HYDRAULIC TURBINES, STORAGE PUMPS AND PUMP-TURBINES –
TENDERING DOCUMENTS –
Part 3: Guidelines for technical specifications
for Pelton turbines
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization
for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
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divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
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equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
report of one of the following types:
• type 1, when the required support cannot be obtained for the publication of an International
Standard, despite repeated efforts;
• type 2, when the subject is still under technical development or where for any other reason
there is the future but no immediate possibility of an agreement on an International
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• type 3, when a technical committee has collected data of a different kind from that which is
normally published as an International Standard, for example "state of the art".
Technical reports of types 1 and 2 are subject to review within three years of publication to
decide whether they can be transformed into International Standards. Technical reports of
type 3 do not necessarily have to be reviewed until the data they provide are considered to be
no longer valid or useful.
IEC 61366-3, which is a technical report of type 3, has been prepared by IEC technical
committee 4: Hydraulic turbines.

61366-3 © IEC:1998(E) – 5 –
The text of this technical report is based on the following documents:
Committee draft Report on voting
4/110/CDV 4/122/RCV
Full information on the voting for the approval of this technical report can be found in the report
on voting indicated in the above table.
Technical Report IEC 61366-3 is one of a series which deals with Tendering documents for
hydraulic turbines, storage pumps and pump-turbines. The series consists of seven parts:
Part 1: General and annexes (IEC 61366-1)
Part 2: Guid
...