SIST IEC/TR 61366-7:1999
(Main)Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 7: Guidelines for technical specifications for storage pumps
Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 7: Guidelines for technical specifications for storage pumps
IEC TR 63018:2015(E) specifies a guideline for improvement of signal loss by using noise suppression materials (hereafter referred to as NSMs) for FPCBs. This Technical Report also indicates a measuring method of signal loss variations of FPCBs using NSMs using network analyzer equipment. In addition, this method only measures the value of the signal loss variation by using NSMs for FPCBs. This report, however, neither determines nor indicates the structure or material of FPCBs.
Vodne turbine, akumulacijske črpalke in črpalne turbine – Razpisna dokumentacija – 7. del: Smernice za tehnične specifikacije akumulacijskih črpalk
General Information
Buy Standard
Standards Content (Sample)
IEC TR 63018
®
Edition 1.0 2015-12
TECHNICAL
REPORT
colour
inside
Flexible printed circuit boards (FPCBs) – Method to decrease signal loss by
using noise suppression materials
IEC TR 63018:2015-12(en)
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IEC TR 63018
®
Edition 1.0 2015-12
TECHNICAL
REPORT
colour
inside
Flexible printed circuit boards (FPCBs) – Method to decrease signal loss by
using noise suppression materials
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.180 ISBN 978-2-8322-3082-4
Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TR 63018:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Test guideline . 6
3.1 Apparatus . 6
3.1.1 Network analyzer . 6
3.1.2 Block diagram for signal loss measuring . 6
3.2 Test specimen . 7
3.2.1 Structure . 7
3.2.2 Preparation . 8
3.2.3 Test method . 8
3.2.4 Calculation . 9
3.2.5 Test result . 9
3.2.6 Analysis . 12
3.3 Improvement method of signal loss for a shield FPCB . 13
Annex A (normative) Block diagram of signal loss test system . 14
Figure 1 – Bare/shield FPCB . 5
Figure 2 – Increment of signal loss using NSMs . 5
Figure 3 – Signal loss test system . 6
Figure 4 – Schematic diagram for two type of test specimen . 7
Figure 5 – Cross-section of shield FPCB . 8
Figure 6 – Difference of signal loss between bare and shield FPCBs . 9
Figure 7 – Signal loss value of the bare and shield FPCB . 10
Figure 8 – Signal loss variation according to the Cu conductive layer thickness . 11
Figure 9 – Signal loss variation according to the Cu signal line width . 11
Figure 10 – Two types of structure for FPCB . 12
Figure 11 – Electric field diagram for two types of shield FPCB . 13
Figure A.1 – Block diagram of signal loss test system . 14
Figure A.2 – Signal loss test system according to the Agilent network analyzer N5230A . 14
Table 1 – Comparison of cut-off frequency with bare/shild FPCB . 10
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IEC TR 63018:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FLEXIBLE PRINTED CIRCUIT BOARDS (FPCBs) – METHOD TO DECREASE
SIGNAL LOSS BY USING NOISE SUPPRESSION MATERIALS
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
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technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC TR 63018, which is a technical report, has been prepared by IEC technical committee 91:
Electronics assembly technology.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
91/1284/DTR 91/1309/RVC
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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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– 4 – IEC TR 63018:2015 © IEC 2015
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
IMPORTANT – The 'colour inside' logo on the cover page of this publication 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.
---------------------- Page: 6 ----------------------
IEC TR 63018:2015 © IEC 2015 – 5 –
INTRODUCTION
In recent years, since the use of smart phones, and other mobile and display devices has
increased significantly, the supply of FPCBs has also been largely extended. Specifically,
since the FPCB devices seek high speed performance, the requirements with respect to
electromagnetic interference (EMI) suppression in the devices has also grown in importance.
Therefore, FPCBs used inside smart phones employ noise suppression materials (NSMs) to
solve EMI problems, as shown in Figure 1.
IEC
Figure 1 – Bare/shield FPCB
However, an application of noise suppression materials (NSMs) for FPCBs reaches the limit
concerning the problem of incrementation of signal loss. Therefore, FPCB and NSMs
manufacturers need to analyse signal loss variations of FPCBs shielded by NSMs, as shown
in Figure 2.
Bare FPCB
Shield FPCB
Frequency (GHz)
IEC
Figure 2 – Increment of signal loss using NSMs
As FPCBs are used with high frequency, the problem of signal loss becomes more significant.
As the user of FPCBs has a demand for the lowest value of signal loss by using NSMs,
suppliers of FPCBs have to anticipate an appropriate design in order to achieve an adequate
signal loss value.
Transmission loss (dB)
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– 6 – IEC TR 63018:2015 © IEC 2015
FLEXIBLE PRINTED CIRCUIT BOARDS (FPCBs) – METHOD TO DECREASE
SIGNAL LOSS BY USING NOISE SUPPRESSION MATERIALS
1 Scope
This Technical Report specifies a guideline for improvement of signal loss by using noise
suppression materials (hereafter referred to as NSMs) for FPCBs.
This Technical Report a
...
SLOVENSKI STANDARD
SIST IEC/TR 61366-7:1999
01-april-1999
9RGQHWXUELQHDNXPXODFLMVNHþUSDONHLQþUSDOQHWXUELQH±5D]SLVQDGRNXPHQWDFLMD
±GHO 6PHUQLFH]DWHKQLþQHVSHFLILNDFLMHDNXPXODFLMVNLKþUSDON
Hydraulic turbines, storage pumps and pump-turbines - Tendering Documents - Part 7:
Guidelines for technical specifications for storage pumps
Ta slovenski standard je istoveten z: IEC/TR 61366-7
ICS:
27.140 Vodna energija Hydraulic energy engineering
SIST IEC/TR 61366-7:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST IEC/TR 61366-7:1999
---------------------- Page: 2 ----------------------
SIST IEC/TR 61366-7:1999
TECHNICAL IEC
REPORT – TYPE 3
61366-7
First edition
1998-03
Hydraulic turbines, storage pumps
and pump-turbines –
Tendering Documents –
Part 7:
Guidelines for technical specifications
for storage pumps
Turbines hydrauliques, pompes d’accumulation
et pompes-turbines –
Documents d’appel d’offres –
Partie 7:
Guide des spécifications techniques
pour les pompes d'accumulation
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: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
V
International Electrotechnical Commission
For price, see current catalogue
---------------------- Page: 3 ----------------------
SIST IEC/TR 61366-7:1999
– 2 – 61366-7 © IEC:1998(E)
CONTENTS
12 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 . 11
3.4 Design conditions . 11
3.5 Technical performance and other guarantees. 15
3.6 Mechanical design criteria . 18
3.7 Design documentation . 18
3.8 Materials and construction . 19
3.9 Shop inspection and testing . 20
4 Technical specifications for fixed/embedded components. 21
4.1 Spiral case . 22
4.2 Diffuser ring . 23
4.3 Foundation ring . 23
4.4 Suction tube and suction tube liner (if any). 23
4.5 Pit liner. 24
4.6 Conveyor case and return ring (if any). 24
5 Technical specifications for stationary/removable components . 24
5.1 Headcover and bottom ring . 24
5.2 Stationary wearing rings. 25
5.3 Replaceable diffuser ring . 25
6 Technical specifications for rotating parts, bearings and seals. 25
6.1 Impeller . 25
6.2 Main shaft . 25
6.3 Guide bearing. 26
6.4 Main shaft seal . 26
6.5 Sandstill (maintenance) seal . 26
7 Technical specifications for thrust bearing. 27
7.1 Design. 27
7.2 Bearing support . 27
7.3 Bearing assembly . 27
7.4 Oil injection pressure lift system. 27
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SIST IEC/TR 61366-7:1999
61366-7 © IEC:1998(E) – 3 –
Clause Page
8 Technical specifications for miscellaneous components . 27
8.1 Walkways, access platforms and stairs . 27
8.2 Lifting fixtures. 28
8.3 Special tools. 28
8.4 Standard tools . 28
8.5 Storage pump pit hoist. 28
8.6 Nameplate. 28
9 Technical specifications for auxiliary systems. 28
9.1 Bearing lubrication system . 28
9.2 Impeller pressure balancing and pressure relief lines . 29
9.3 Storage pump pit drainage. 29
9.4 Tailwater depression system. 29
10 Technical specifications for instrumentation . 29
10.1 Controls. 29
10.2 Indication. 29
10.3 Protection. 29
11 Spare parts. 29
12 Model acceptance tests . 30
13 Site installation and commissioning tests . 31
13.1 General . 31
13.2 Installation procedures. 31
13.3 Tests during installation . 31
13.4 Commissioning tests. 31
14 Field acceptance tests . 32
14.1 Scope and reports . 32
14.2 Inspection of cavitating pitting. 32
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SIST IEC/TR 61366-7:1999
– 4 – 61366-7 © IEC:1998(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HYDRAULIC TURBINES, STORAGE PUMPS AND PUMP-TURBINES –
TENDERING DOCUMENTS –
Part 7: Guidelines for technical specifications
for storage pumps
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.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
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
Standard;
• 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 61366-7, which is a technical report of type 3, has been prepared by IEC technical
committee 4: Hydraulic turbines.
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SIST IEC/TR 61366-7:1999
61366-7 © 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/RVC
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 61366-7 is one of a series which deals with Tendering Documents for
hydraulic turbines, storage pumps and pump-turbines. The series consists of seven parts:
IEC 61366-1: General and annexes (IEC 61366-1)
Part 2: Guidelines for technical specification for Francis turbines (IEC 61366-2)
Part 3: Guidelines for technical specification for Pelton turbines (IEC 61366-3)
Part 4: Guidelines for technical specification for Kaplan and propeller turbines (IEC 61366-4)
Part 5: Guidelines for technical specification for tubular turbines (IEC 61366-5)
Part 6: Guidelines for technical specification for pump-turbines (IEC 61366-6)
Part 7: Guidelines for technical specification for storage pumps (IEC 61366-7)
Parts 2 to 7 are "stand-alone" publications which when used with IEC 61366-1 contain
guidelines for a specific machine type (i.e. Parts 1 and 4 represent the combined guide for
Kaplan and propeller turbines). A summary of the proposed contents for a typical set of
Tendering Documents is given in the following table 1 and annex A. Table 1 summarizes the
arrangement of each part of this guide and serves as a reference for the various chapters and
sections of the Tendering Documents (see 3.2 of this Part).
A bilingual edition of this technical report may be issued at a later date.
---------------------- Page: 7 ----------------------
SIST IEC/TR 61366-7:1999
Table 1 – Summary of guide for the preparation of Tendering Documents for hydraulic turbines, storage pumps and pump-turbines
CONTENTS OF GUIDE IEC 61366-1 TO IEC 61366-7 SAMPLE TABLE OF CONTENTS OF TENDERING DOCUMENTS (TD)
(Example for the Francis turbines; see 61366-1, annex A)
Part Clause Title Chapter Title
1 General and annexes 1 Tendering requirements
1– 2 Project information
1 1 Object and scope of this guide 3 General conditions
1 2 Reference documents and definitions 4 Special conditions
1 3 Arrangement of Tendering Documents 5 General requirements
1 4 Guidelines for tendering requirements 6 Technical specifications
1 5 Guidelines for project information 6.1 Technical requirements
1 6 Guidelines for general conditions, special conditions and general 6.1.1 Scope of work
requirements 6.1.2 Limits of the contract
6.1.3 Supply by Employer
1 Annexes 6.1.4 Design conditions
6.1.5 Performance and other guarantees
A Sample table of contents of Tendering Documents for Francis turbines 6.1.6 Mechanical design criteria
B Comments on factors for evaluation of tenders 6.1.7 Design documentation
C Check list for tender form 6.1.8 Materials and construction
D Examples of technical data sheets 6.1.9 Shop inspection and testing
E Technical performance guarantees 6.2 Technical specifications for fixed/embedded components
F Example of cavitation pitting guarantees 6.3 Technical specifications for stationary/removable components
G Check list for model test specifications 6.4 Technical specifications for guide vane regulating apparatus
H Sand erosion considerations 6.5 Technical specifications for rotating parts, bearings and seals
6.6 Technical specifications for thrust bearings
2 to 7 Technical specifications 6.7 Technical specifications for miscellaneous components
6.8 Technical specifications for auxiliary systems
2 Francis turbines 6.9 Technical specifications for instrumentation
3 Pelton turbines 6.10 Spare parts
4 Kaplan and propeller turbines 6.11 Model tests
5 Tubular turbines 6.12 Installation and commissioning
6 Pump-turbines 6.13 Field acceptance tests
7 Storage pumps
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SIST IEC/TR 61366-7:1999
61366-7 © IEC:1998(E) – 7 –
HYDRAULIC TURBINES, STORAGE PUMPS AND PUMP-TURBINES –
TENDERING DOCUMENTS –
Part 7: Guidelines for technical specifications
for storage pumps
0 Introduction to technical specifications
The main purpose of the technical specifications is to describe the specific technical
requirements for the hydraulic machine for which the Tendering Documents (TD) are being
issued. To achieve clarity and to avoid confusion in contract administration, the Employer
should not specify anything in the technical specifications, which is of importance only to the
preparation of the tender. Such information and instructions should be given only in the
instructions to Tenderers (ITT). Accordingly, the ITT may refer to other chapters and sections
of the Tendering Documents but not vice versa. As a general rule the word "Tenderer" should
be confined in use only to TD chapter 1 "Tendering requirements" of the Tendering Document,
elsewhere the term "Contractor" should be used.
Special attention should be given to items of a project specific nature such as materials,
protective coating systems, mechanical piping systems, electrical systems, instrumentation. It
is common for Employers to use technical standards for such items which would apply to all
contracts for a particular project or projects. In this event, detailed technical standards should
be specified in TD chapter 5 "General requirements".
Technical specifications for the various types of hydraulic machines included in this Guide are
provided in the following clauses:
Francis turbines (Part 2);
Pelton turbines (Part 3);
Kaplan and propeller turbines (Part 4);
Tubular turbines (Part 5);
Pump-turbines (Part 6);
Storage pumps (Part 7).
The guidelines for preparation of storage pump specifications include technical specifications
for the following:
– Design conditions: project arrangement, hydraulic conditions, specified conditions, modes
of operation, generator characteristics, motor characteristics, synchronous condenser
characteristics, speed-up procedure for pump-mode, transient behaviour data, change-over
times and characteristics, stability of the system, noise, vibration, pressure fluctuations and
safety requirements.
– Technical performance and other guarantees:
ypower;
ydischarge;
yspecific hydraulic energy (head);
yefficiency;
ymaximum momentary pressure;
yminimum momentary pressure;
ymaximum momentary reverse overspeed;
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SIST IEC/TR 61366-7:1999
– 8 – 61366-7 © IEC:1998(E)
ymaximum steady-state reverse runaway speed;
ycavitation pitting;
yhydraulic thrust;
ychange over times;
ymaximum weights and dimensions for transportation, erection and maintenance.
– Mechanical design criteria: Design standards, stresses and deflections and special design
considerations (earthquake, acceleration, etc.).
– Design documentation: Contractor's input needed for the Employer's design, the
Contractor's drawings and data, the Contractor's review of the Employer's design and
technical reports by the Contractor.
– Materials and construction: Material selection and standards, quality assurance procedures,
shop methods, corrosion protection and painting.
– Shop inspection and testing: General requirements and reports, material tests and
certificates, dimensional checks, shop assembly and tests.
– Fixed/embedded components: Spiral case with compressible wrapping (if any), diffuser,
suction tube, suction tube liner, pit liner, and foundation plates and anchorage.
– Stationary/removable components: Headcover, bottom ring, facing plates, stationary
wearing ring, diffuser ring.
– Rotating parts, bearings and seals: Impeller, main shaft, guide bearing with oil supply,
oil/water cooler, main shaft seal, standstill shaft seal.
– Thrust bearing (when specified as part of the hydraulic machine supply): Bearing support,
thrust block, rotating ring, thrust bearing pads and pivots, oil sump with oil supply (common
with guide bearing, if any), oil/water coolers, instrumentation.
– Miscellaneous components: Walkways, lifting fixtures, special tools, standard tools, pump
pit hoist, nameplate, suction tube maintenance platform.
– Auxiliary systems: Impeller pressure balancing and pressure relief lines, pump pit drainage
and other drainage systems; lubrication, tailwater depression, cooling water supply for
impeller seal for blow-down operation.
– Instrumentation: Controls, indication and protection.
– Spare parts: Basic spare parts.
– Model acceptance tests: Test requirements.
– Site installation and commissioning tests: Installation procedures and commissioning tests.
– Field acceptance tests: Scope of field tests, reports, inspection of cavitation pitting.
An example of the proposed table of contents for Tendering Documents for a Francis turbine is
given in annex A of IEC 61366-1. The example does not include technical specifications for
relief valves, high and low-pressure side valves or gates which, at the Employer's option, may
be included in the Tendering Documents for storage pumps or may be specified in separate
documents.
A storage pump may be driven by a motor or by a motor-generator in case of a tandem unit. In
Part 7, the term motor is also used in the case of a motor-generator (tandem unit). Part 7 does
not include the motor and electrical system which may, at the Employer's option, be included in
the Tendering Documents for the storage pump or specified as separate documents.
Chapter 6 "technical specifications" of the Tendering Documents should be arranged as
follows:
6.1 Technical requirements;
6.2 Technical specifications for embedded components;
6.3 Technical specifications for stationary/removable components;
6.4 Technical specifications for rotating parts, guide bearings and seals;
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SIST IEC/TR 61366-7:1999
61366-7 © IEC:1998(E) – 9 –
6.5 Technical specifications for thrust bearing;
6.6 Technical specifications for miscellaneous components;
6.7 Technical specifications for auxiliary systems;
6.8 Technical specifications for instrumentation;
6.9 Spare parts;
6.10 Model acceptance tests;
6.11 Site installation and commissioning;
6.12 Field acceptance tests.
1 Scope
This technical report, referred to herein as the Guide, 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 storage pumps.
2 Reference documents
IEC 60041:1992, Field acceptance tests to determine the hydraulic performance of hydraulic
turbines, storage pumps and pump-turbines
IEC 60193:1965, International code for model acceptance tests of hydraulic turbines
IEC 60609:1978, Cavitation pitting evaluation in hydraulic turbines, storage pumps and pump-
turbines
IEC 60805:1985, Guide for commissioning operation and maintenance of storage pumps and of
pump-turbines operating as pumps
IEC 60994:1991, Guide for field measurement of vibrations and pulsations in hydraulic
machines (turbines, storage pumps and pump turbines)
ISO 3740:1980, Acoustics – Determination of sound power levels of noise sources – Guidelines
for the use of basic standards and for the preparation of noise test codes
3 Technical requirements
3.1 Scope of work
This subclause should describe the scope of work and the responsibilities which are to be
1)
conferred upon Contractor. The general statement of scope of work presented in TD
Section 2.1 (5.1 in IEC 61366-1) shall be consistent with what is presented here. In a similar
manner, pay items in the tender form, TD section 1.2 (4.2 in IEC 61366-1) should be defined
directly from TD subsection 6.1.1.
The scope of work should begin with a general statement which outlines the various elements
of the work including (where applicable) the layout, the design, model testing, supply of
materials and labour, fabrication, machining, quality assurance, quality control, shop assembly,
shop testing, spare parts, transportation to site, site installation, commissioning, acceptance
testing, warranty and other services specified or required for the items of work.
It is important to study in detail the general arrangement of a storage pump, especially in case
of a ternary unit. The choice of a vertical or horizontal shaft arrangement may be influenced by
civil engineering costs and cavitation behaviour of the pump.
___________
1)
All references to Tendering Documents (TD) apply to annex A of IEC 61366-1.
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The layout of a storage pump may lead to single or multistage and/or to single or double-
suction arrangement. Economical operation and operational flexibility of a ternary unit may
require additional machines and equipment such as starting turbine, engageable coupling,
hydraulic converter as well as a booster pump to provide the necessary net positive suction
specific energy (net positive suction head). There is the possibility to apply a motor with two or
with variable speeds. Accordingly, it is recommended to evaluate in a preliminary study the
most feasible solution.
The Employer should indicate the type of the main valve (shut-off valve) at the high-pressure
side of the machine, eventually also the type of the valve at the low-pressure side.
Rare types of storage pumps, e.g. diagonal and axial storage pumps with adjustable impeller
blades including tubular pump types are not presented in this part. For the description of
additional components such as impeller blade servomotor assembly, oil pressure unit and
regulator may be referred to Part 4 (Kaplan and propeller turbines) and Part 5 (tubular
turbines).
The general statement should be followed by a specific and detailed list of the major items
which the Employer wishes to have as separate payment items in the tender form, for example:
Item Description
1 Two vertical shaft, single flow, three stage storage pumps, each designed for a pump
3
discharge of 4,5 m /s, at a specified hydraulic energy of 4 412.7 J/Kg (specified pump
head of 450 m) and a rotational speed of 10 revolutions per second (600 rpm), directly
coupled to a motor-generator with a maximum apparent power of 25 000 kVA;
2 Pump model testing;
3 Tools, slings and handling devices required for maintenance of the storage pumps;
4 Transportation and delivery to site;
5 Site installation, commissioning, and acceptance testing;
6 Preparation and submission of operation and maintenance manual and training of the
Employer's operating and maintenance staff in the optimum use of these manuals; and
7 Spare parts required for operation and maintenance.
3.2 Limits of the contract
This subclause, making reference to the Employer's drawings and data should give in detail the
limits of the contract considering the following:
– details of the design and supply limits of the high and low-pressure sides of the machine;
– details, location, and responsibility for field connection of spiral case to penstock or valve
on high-pressure side;
– details and location of the low-pressure side termination of the suction tube liner;
– details and location of valve(s) or gate(s) on low-pressure side;
– orientation and location of the pump/motor shaft coupling flange interface;
– responsibility for supply and installation of flange coupling bolts, nuts and guards at
motor/storage pump coupling, including drilling jig;
– responsibility for supply and installation of bolts, nuts, gaskets at piping termination;
– termination of spiral case and suction tube dewatering piping;
– termination of spiral case air exhaust piping (if any);
– termination of pit drainage piping;
– termination of bearing lubricating oil piping;
– termination of shaft seal piping (if any);
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– termination of piping (if required) to carry upper impeller seal leakage to the suction tube or
to the drainage system;
– termination of cooling water piping for bearings;
– thrust bearing (if specified);
– termination points and junction boxes for wiring for power, control, indication, protection,
and lighting;
– compressed air for service and other functions;
NOTE – Contract limits will change if other major items of equipment (such as shut-off valves, motors, excitation
systems, control metering and relaying systems, switchgear, power transformer, starting equipment, engageable
couplings, hydraulic converters and booster pumps) are included with the storage pump equipment in a common set
of Tendering Documents.
3.3 Supply by Employer
This subclause should be complementary to 5.6 of IEC 61366-1 (TD 2.6) and should list the
items and services which will be the responsibility of the Employer. The following items should
be considered:
– services during erection;
– temporary enclosures for site storage of storage pump parts or for erection;
– installation, in primary concrete, of small items provided by the Contractor such as anchors,
sole plates and piping;
– concrete for embedment of storage pump components - supply, placement and control,
including monitoring and verification during and after concrete placement by others;
– grout injection if required ei
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