1、BRITISH STANDARD BS IEC 61366-7:1998 Hydraulic turbines, storage pumps and pump-turbines Tendering Documents Part 7: Guidelines for technical specifications for storage pumps ICS 27.140BS IEC 61366-7:1998 This British Standard, having been prepared under the directionof the Engineering SectorBoard w
2、aspublished undertheauthorityof the StandardsBoard and comes intoeffect on 15September1998 BSI 04-1999 ISBN 0 580 30321 7 National foreword This British Standard reproduces verbatim IEC61366-7:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted t
3、o Technical Committee MCE/15, Hydraulic turbines, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related inter
4、national and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. From1 January1997, all IEC publications have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC6
5、0027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Stand
6、ards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible f
7、or their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theIEC title page, pages ii to iv, pages1 to17 and a back cover. This standard ha
8、s been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBS IEC 61366-7:1998 BSI 04-1999 i Contents Page National foreword Inside front cover Text o
9、f IEC 61366-7 1ii blankBS IEC 61366-7:1998 ii BSI04-1999 Contents Page 0 Introduction to technical specifications 1 1 Scope 2 2 Reference documents 2 3 Technical requirements 2 3.1 Scope of work 2 3.2 Limits of the contract 3 3.3 Supply by Employer 3 3.4 Design conditions 4 3.5 Technical performance
10、 and other guarantees 6 3.6 Mechanical design criteria 8 3.7 Design documentation 9 3.8 Materials and construction 9 3.9 Shop inspection and testing 10 4 Technical specifications for fixed/embedded components 11 4.1 Spiral case 11 4.2 Diffuser ring 12 4.3 Foundation ring 12 4.4 Suction tube and suct
11、ion tube liner (if any) 12 4.5 Pit liner 12 4.6 Conveyor case and return ring (if any) 12 5 Technical specifications for stationary/removable components 13 5.1 Headcover and bottom ring 13 5.2 Stationary wearing rings 13 5.3 Replaceable diffuser ring 13 6 Technical specifications for rotating parts,
12、 bearings and seals 13 6.1 Impeller 13 6.2 Main shaft 13 6.3 Guide bearing 13 6.4 Main shaft seal 14 6.5 Sandstill (maintenance) seal 14 7 Technical specifications for thrust bearing 14 7.1 Design 14 7.2 Bearing support 14 7.3 Bearing assembly 14 7.4 Oil injection pressure lift system 14 8 Technical
13、 specifications for miscellaneous components 14 8.1 Walkways, access platforms and stairs 14 8.2 Lifting fixtures 14 8.3 Special tools 14 8.4 Standard tools 14 8.5 Storage pump pit hoist 15 8.6 Nameplate 15 9 Technical specifications for auxiliary systems 15 9.1 Bearing lubrication system 15 9.2 Imp
14、eller pressure balancing and pressure relief lines 15 9.3 Storage pump pit drainage 15 9.4 Tailwater depression system 15 10 Technical specifications for instrumentation 15 10.1 Controls 15 10.2 Indication 15BS IEC 61366-7:1998 BSI 04-1999 iii Page 10.3 Protection 15 11 Spare parts 15 12 Model accep
15、tance tests 15 13 Site installation and commissioning tests 16 13.1 General 16 13.2 Installation procedures 16 13.3 Tests during installation 16 13.4 Commissioning tests 17 14 Field acceptance tests 17 14.1 Scope and reports 17 14.2 Inspection of cavitating pitting 17BS IEC 61366-7:1998 iv BSI 04-19
16、99 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
17、Chapter Title 1 1 1 1 1 1 1 1 1 2 3 4 5 6 General and annexes Object and scope of this guide Reference documents and definitions Arrangement of Tendering Documents Guidelines for tendering requirements Guidelines for project information Guidelines for general conditions, special conditions and gener
18、al requirements 1 2 3 4 5 6 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.1.6 6.1.7 6.1.8 6.1.9 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.11 6.12 6.13 Tendering requirements Project information General conditions Special conditions General requirements Technical specifications Technical requirements Scope of wor
19、k Limits of the contract Supply by Employer Design conditions Performance and other guarantees Mechanical design criteria Design documentation Materials and construction Shop inspection and testing Technical specifications for fixed/embedded components Technical specifications for stationary/removab
20、le components Technical specifications for guide vane regulating apparatus Technical specifications for rotating parts, bearings and seals Technical specifications for thrust bearings Technical specifications for miscellaneous components Technical specifications for auxiliary systems Technical speci
21、fications for instrumentation Spare parts Model tests Installation and commissioning Field acceptance tests 1 Annexes A B C D E F G H Sample table of contents of Tendering Documents for Francis turbines Comments on factors for evaluation of tenders Check list for tender form Examples of technical da
22、ta sheets Technical performance guarantees Example of cavitation pitting guarantees Check list for model test specifications Sand erosion considerations 2 to 7 Technical specifications 2 3 4 5 6 7 Francis turbines Pelton turbines Kaplan and propeller turbines Tubular turbines Pump-turbines Storage p
23、umpsBS IEC 61366-7:1998 BSI 04-1999 1 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 conf
24、usion 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 o
25、ther 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 chapter1 “Tendering requirements” of the Tendering Document, elsewhere the term “Contractor” should be used. Special attention should be given to items
26、 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, de
27、tailed technical standards should be specified in TD chapter5 “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
28、(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 operatio
29、n, 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 performan
30、ce and other guarantees: power; discharge; specific hydraulic energy (head); efficiency; maximum momentary pressure; minimum momentary pressure; maximum momentary reverse overspeed; maximum steady-state reverse runaway speed; cavitation pitting; hydraulic thrust; change over times; maximum weights a
31、nd dimensions for transportation, erection and maintenance. Mechanical design criteria: Design standards, stresses and deflections and special design considerations (earthquake, acceleration, etc.). Design documentation: Contractors input needed for the Employers design, the Contractors drawings and
32、 data, the Contractors review of the Employers 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, m
33、aterial 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
34、, 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
35、 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.
36、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.BS IEC 61366-7:1998 2 BSI 04
37、-1999 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 co
38、ntents for Tendering Documents for a Francis turbine is given in Annex A of IEC61366-1. The example does not include technical specifications for relief valves, high and low-pressure side valves or gates which, at the Employers option, may be included in the Tendering Documents for storage pumps or
39、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 Part7, the term motor is also used in the case of a motor-generator (tandem unit). Part7 does not include the motor and electrical system which may, at the Employers o
40、ption, be included in the Tendering Documents for the storage pump or specified as separate documents. Chapter6 “technical specifications” of the Tendering Documents should be arranged as follows: 1 Scope This technical report, referred to herein as the Guide, is intended to assist in the preparatio
41、n of Tendering Documents and tendering proposals and in the evaluation of tenders for hydraulic machines. This part of IEC61366 provides guidelines for storage pumps. 2 Reference documents IEC 60041:1992, Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pu
42、mps 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
43、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 fo
44、r 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 conferred upon Contractor. The general statement of scope of work presented in TD 1)Section2.1 (5.1 in IEC61366-1) shall be cons
45、istent with what is presented here. In a similar manner, pay items in the tender form, TD section1.2 (4.2 in IEC61366-1) should be defined directly from TD subsection6.1.1. The scope of work should begin with a general statement which outlines the various elements of the work including (where applic
46、able) 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 re
47、quired 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. 6.1 Technical
48、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; 6.5 Technical specifications for thrust bearing; 6.6 Technical specifications for miscellan
49、eous 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) All references to Tendering Documents (TD) apply to Annex A of IEC61366-1.BS IEC 61366-7:1998 BSI 04-1999 3 The layout of a storage pump may lead to single or multistage and/or to single or double-suction arrangement. Economical operation and operational flexibil
