IEC TR 61366-2:1998

Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 2: Guidelines for technical specifications for Francis turbines

IEC TR 61366-2:1998, 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 Francis 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-Mar-1998
• Completion Date: 11-Mar-1998

Standards Content (Sample)

TECHNICAL
IEC
REPORT
61366-2
First edition
1998-03
Hydraulic turbines, storage pumps
and pump-turbines –
Tendering Documents –
Part 2:
Guidelines for technical specifications
for Francis turbines
Turbines hydrauliques, pompes d’accumulation
et pompes-turbines –
Documents d’appel d’offres –
Partie 2:
Guide des spécifications techniques pour les turbines Francis
Reference number
IEC 61366-2:1998(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
61366-2
First edition
1998-03
Hydraulic turbines, storage pumps
and pump-turbines –
Tendering documents –
Part 2:
Guidelines for technical specifications
for Francis turbines
Turbines hydrauliques, pompes d’accumulation
et pompes-turbines –
Documents d’appel d’offres –
Partie 2:
Guide des spécifications techniques pour les turbines Francis
 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 – 61366-2 © IEC:1998(E)
CONTENTS
Pages
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 Spiral case . 21
4.2 Stay ring. 21
4.3 Foundation ring . 22
4.4 Draft tube and draft tube liner . 22
4.5 Pit liner. 23
5 Technical specifications for stationary/removable components . 23
5.1 Headcover and bottom ring . 23
5.2 Guide vanes . 24
6 Technical specifications for guide vane regulating apparatus. 24
6.1 Servomotors . 24
6.2 Connecting rods . 24
6.3 Regulating ring . 25
6.4 Guide vane linkage . 25
6.5 Guide vane overload protection. 25
6.6 Locking devices. 25
7 Technical specifications for rotating parts, bearings and seals. 25
7.1 Runner . 25
7.2 Main shaft . 26
7.3 Turbine guide bearing. 26
7.4 Main shaft seal . 27
7.5 Standstill shaft (maintenance) seal . 27

61366-2 © IEC:1998(E) – 3 –
Clause Page
8 Technical specifications for thrust bearing (when specified as part of
turbine supply). 27
8.1 Design data . 27
8.2 Bearing support . 27
8.3 Bearing assembly . 27
8.4 Oil injection pressure lift system. 28
9 Technical specifications for miscellaneous components . 28
9.1 Walkways, access platforms and stairs . 28
9.2 Lifting fixtures. 28
9.3 Special tools. 28
9.4 Standard tools . 28
9.5 Turbine pit hoist. 29
9.6 Nameplate. 29
10 Technical specifications for auxiliary systems. 29
10.1 Bearing lubrication system . 29
10.2 Runner pressure balancing and pressure relief lines . 29
10.3 Turbine pit drainage. 29
10.4 Lubrication of guide vane regulating system . 29
10.5 Air admission system. 29
10.6 Tailwater depression system. 29
11 Technical specifications for instrumentation . 30
11.1 Controls. 30
11.2 Indication. 30
11.3 Protection. 30
12 Spare parts. 30
13 Model acceptance tests . 30
14 Site installation and commissioning. 31
14.1 General . 31
14.2 Installation procedures. 31
14.3 Tests during installation . 32
14.4 Commissioning tests. 32
15 Field acceptance tests . 32
15.1 Scope and reports . 32
15.2 Inspection of cavitating pitting. 33

– 4 – 61366-2 © IEC:1998(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HYDRAULIC TURBINES, STORAGE PUMPS AND PUMP-TURBINES –
TENDERING DOCUMENTS –
Part 2: Guidelines for technical specifications
for Francis turbines
FOREWORD
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no longer valid or useful.
IEC 61366-2, which is a technical report of type 3, has been prepared by IE
...