Guideline. Guide for the Procurement of Steam Turbine Plants. VGB-R 145Ae Part A: General Part. First Edition 2008

Transcription

1 Guideline Guide for the Procurement of Steam Turbine Plants VGB-R 145Ae Part A: General Part First Edition 2008 Part A: General Part Part B: Technical Part Offer, Scope of Supply Part C: Specification Agreed Scope of Supply Published by: VGB PowerTech e.v. Obtainable from: VGB PowerTech Service GmbH Verlag technisch-wissenschaftlicher Schriften P.O. Box , D Essen Phone Fax Any reproduction only permitted with prior permission of VGB.

2 Project: Page: 3 Project Specification: Part A Preface With the establishment of the European Single Market it became necessary to create rules for procurement procedures with which a unification of the rules of competition can be obtained and a possible discrimination of individual countries or tenderers be prevented. These rules have been laid down for the various sectors of energy in the Council Directive 93/38/EEC co-ordinating the procurement procedures. These procurement rules are legally binding. Purchasers and contractors of power plant equipment are both subject to the procurement rules which were established by transposition of the Council Directive into the standard series EN This guideline shall supplement the European Standard Guide for Procurement of Power Station Equipment, EN 45510:1998, intended for the establishment of general and technical terms of contract. This guideline integrates the VDEW Terms of Delivery for Steam Turbines and the collection and evaluation of the great experience made with the VGB Guidelines and Recommendations (VGB-R, VGB-M) which, however, cannot completely reflect the state-of-the-art, but were established to the best of our knowledge and belief. The procurement criteria to be determined on the basis of technical specifications as early as at the stage of invitation to tender will finally govern the placing of order. This procedure requires a high quality of the invitation to tender in order to avoid unpleasant surprise up to legal disputes for violation of procurement rules. The loss of freedom of choice only seems to be apparent because the same procurement rules can be used further but have to be clearly defined at a very early stage. This also applies to technical specifications. The VGB Guidelines (VGB-R, VGB-M) can still be referenced and be used further. The technical specifications to be established in due consideration and proper application of the European Standard EN are only part of the enquiry and shall be supplemented by commercial, contractual and legal stipulations. This means that the invitation to tender should address and define all aspects of the later delivery contract. This guideline will at first represent an offer for using it without obligation. Its complete application, or by way of extraction, is left to the parties involved and shall be agreed in each individual case between the purchaser and the supplier. The variety of the details makes it impossible to deal with each detail in the guideline. It may provide only a framework with criteria that have definitely to be observed in the order to largely exclude later disputes between the contracting partners. Users of this guideline are therefore asked to inform the VGB on experience gained with and proposals for improving this guideline, so that the VGB, upon evaluation of the information provided, may supplement or change this guideline appropriately.

3 Project: Page: 4 Project Specification: Part A VGB members may seek advice with the VGB office for expert opinion on all questions dealing with the planning, erection and operation of steam turbine plants. The following gentlemen participated in the establishment of this guideline: Blomeier VGB PowerTech e.v., Essen Braun Vattenfall Europe Berlin AG & Co. KG, Berlin Busack swb Erzeugung GmbH & Co. KG, Bremen Daum VGB PowerTech e.v., Essen Fricke Stadtwerke Hannover AG, Hannover Hefele BASF AG, Ludwigshafen Mandel Vattenfall Europe Generation AG & Co. KG, Cottbus Richter VGB PowerTech e.v., Essen Røikjær DONG Energy, Fredericia/DK Dr. Then RWE Power AG, Essen

4 Project: Page: 5 Project Specification: Part A Contents A 1 General, guidelines, rules and regulations... 8 A 1.1 Scope... 8 A 1.2 General terms as part of the contract... 8 A 1.3 Manufacturer s and supplier s specification... 8 A 1.4 Functional performance... 9 A 1.5 General rules and guidelines... 9 A 1.6 Technical rules... 9 A Condenser plant A Auxiliary equipment A Materials identity check A Design of valves, pipelines A Replacement in the case of proved rejection A Oil and control fluid system A Heat insulation A Leak tightness A Quality of insulation of electric windings A Examination procedures for castings and forgings A Steam purity A 2 Delivery A 2.1 Delivery and freight A 2.2 Packing A 3 Assembly A 3.1 Extent of assembly A 3.2 Site conditions A 3.3 Check of foundation A 3.4 Additional work A 3.5 Incidental expenditure A 3.6 Assembly times A Time schedule A Working time A Additional costs A 3.7 Purchaser s obligations A General A Extent of supply under purchaser s responsibility A Joint use of site facilities A Drive motors A 3.8 Contractor s obligations A Extent of supply under contractor s responsibility A Connections A 3.9 Personnel, working and accident prevention regulations A Contractor s responsibility A Agreement on temporary workers and leasing personnel A Working regulations A Accident prevention regulations A Health-hazarding substances A Release of work/release procedures... 19

5 Project: Page: 6 Project Specification: Part A A 4 Commissioning and delivery period A 4.1 Commencement of commissioning A Point in time A Right of refusal A 4.2 Completion of commissioning A Point in time A Liability to report A 4.3 Delivery time A 4.4 Prerequisites for observance of the delivery time A 4.5 Consequences arising from delay in delivery A 4.6 Unforeseen events A 5 Trial run and transfer of risk A 5.1 Purpose and beginning of trial run A 5.2 Loadings A 5.3 Training of the user s personnel A 5.4 Operational troubles during trial run A 5.5 Completion of trial run A 5.6 Point in time of transfer of risk and taking-over of operation A 6 Guaranteed performance values and acceptance testing A 6.1 Nominal rating, consumption and efficiencies A General A Bases for guaranteed performance A Inspection of the plant prior to acceptance testing A Several acceptance tests A Repetition of acceptance tests A Costs of acceptance testing A Conversion of measuring results A 6.2 Further technical characteristics A Smooth running A Machine noise A Start-up and loading times A Availability A 6.3 Guaranteed performance values for generator A 6.4 Guaranteed performance values for condenser plant A Condenser pressure and leak tightness A 6.5 Demonstration of additional technical characteristics A 7 Fulfilment of contract and warranty periods A 7.1 Fulfilment of contract A 7.2 Place of performance A 7.3 Warranty periods A 7.4 Warranty for spare parts A 7.5 Supplementary requirements for construction A 8 Purchaser s rights in case of defective deliveries A 8.1 Corrective changes, replacement delivery A 8.2 Right of reduction in price A General A Nominal rating... 29

6 Project: Page: 7 Project Specification: Part A A Heat or steam consumption and thermal or thermodynamic efficiency A Calculation of deviations A Special agreements on generator over temperatures A 8.3 Right of rescission A Material defects A Guaranteed technical characteristics A Non-observance of the delivery period A General A Consequences of rescission A 8.4 Claim for damages A 8.5 Limitation period A 9 Liability, patent protection, miscellaneous A 9.1 Liability A Insurance A 9.2 Patents and protective rights A 10 Miscellaneous A 10.1 Transfer of rights to third persons A 10.2 Legal effect A 10.3 Amendment of contract A 10.4 Deviating terms of business A 10.5 Separate delivery of turbine and generator A 10.6 Arbitration A 10.7 Contractual penalty for technical documents A 11 Explanations as to the application of the procurement guides A 11.1 Format of Parts A, B and C A 11.2 Numbering of sections and clauses A 11.3 Application A 11.4 Short description... 34

7 Project: Page: 3 Project Specification: Part B Contents B 1 Scope of supply, turbine...7 B 1.1 Design type and main data... 7 B 1.2 Steam conditions... 7 B 1.3 Operational characteristics B 1.4 Layout B 1.5 Pipe connections (at terminal points of delivery) B 1.6 Material data B 1.7 Special turbine components B Emergency stop and control valves B Safety valves in extraction and bleed lines B Bypass stations B Trip system B Back pressure protection system B Control system and set point adjustment device B Turning gear B Steam strainers B 1.8 Turbine accessories B Tanks for lubricating oil and control fluids ) B Pumps B Coolers B Oil/fluid cleaning and service system B Standstill air ventilation, turbine B Flushing system for oil system B Turbine forced cooling system B Heating systems B Additional accessories B 1.9 Process and supervisory instrumentation, limiting and... protection devices, governing system for steam turbine plant B 2 Scope of supply, condenser plant...26 B 2.1 Design data for total condenser plant B 2.2 Data for individual condensers B Arrangement and circuitry B Design data B Design data B Pipe connections B Materials data and corrosion protection B Other data B 2.3 Auxiliary machines and equipment for condensation B Condensate pumps B Air extraction for condenser plant B Control equipment for condenser plant B Other accessories B 2.4 Operational measuring and monitoring instruments for... condenser plant... 35

8 Project: Page: 4 Project Specification: Part B B 3 Scope of supply, generator...36 B 3.1 Nominal data, efficiencies and losses B 3.2 Design B 3.3 Materials data B 3.4 Excitation system B Requirements for generator excitation (at operating temperatures) B Design and dimensions B Nominal data B Excitation system B Power converter transformer B Power converter system B Voltage control B De-excitation B 3.5 Generator coolers B Design data for coolers B Other data B Seal oil system B Hydrogen system B Primary water system B Other equipment B 3.6 Instrumentation and control equipment for generator B 4 Scope of supply, miscellaneous...50 B 4.1 Main gear B 4.2 Couplings B 4.3 Turbine foundation B Type of foundation B Scope of supply of foundation B Construction of foundation B 4.4 Support B 4.5 Pipework B 4.6 Measuring and monitoring system B 4.7 Thermal and anti-condensate insulation B 4.8 Further supplies B Coatings B Tools and equipment B Documentation B Drawings B Calculations and further documents B List of most important motors B Other accessories B 4.9 Main dimensions and weight B 4.10 Spare parts and overhaul modules B 4.11 Terminal points of delivery B Terminal points of delivery for contractor B Supplies by the customer... 61

9 Project: Page: 5 Project Specification: Part B B 5 Guaranteed performance values...62 B 5.1 Reference quantities for guaranteed values ) B General design data B Design data for feedwater preheating B Design data for steam extraction B 5.2 Basis for guaranteed performance values B 5.3 Guaranteed performance values for total unit plant B Output B Specific consumption values or efficiencies ) B Permissible excess consumption or reduction in efficiency B Running smoothness B Machine noise B 5.4 Guaranteed turbine performance values B Start-up and loading times B Speed deviations ) B 5.5 Guaranteed-performance values for condenser plant B 5.6 Guaranteed-performance values for generator B Eficiencies B Temperatures B Quality of insulation B 6 Technical specifications for total plant...70 B 6.1 No-load steam and cooling steam consumption ) B Oil supply B Turbine coast down under vacuum B 6.2 Technical specifications for turbine B Allowable deviations from maximum possible steam flow rate B Allowable deviations from pressures B Heat losses by radiation and conduction B Steam purity B 6.3 Technical specifications for condenser plant (see A 1.6) B Leak tightness B Oxygen content of condenate B Cooling water pressure drop B Power requirement of auxiliary machines and equipment B 6.4 Technical rules and regulations B General technical rules and regulations B General rules and regulations B 7 Periods of Delivery and Assembly/Erection...76 B 7.1 Period of delivery for total plant B 7.2 Time schedule for assembly and commissioning B 7.3 Duration of trial run B 8 Addresses...76

10 Project: Page: 3 Project Specification: Part C Contents C 1 Scope of supply, turbine... 7 C 1.1 Design type and main data... 7 C 1.2 Steam conditions... 7 C 1.3 Operational characteristics C 1.4 Layout C 1.5 Pipe connections (at terminal points of delivery) C 1.6 Material data C 1.7 Special turbine components C Emergency stop and control valves C Safety valves in extraction and bleed lines C Bypass stations C Trip system C Back pressure protection system C Control system and set point adjustment device C Turning gear C Steam strainers C 1.8 Turbine accessories C Tanks for lubricating oil and control fluids ) C Pumps C Coolers C Oil/fluid cleaning and service system C Standstill air ventilation, turbine C Flushing system for oil system C Turbine forced cooling system C Heating systems C Additional accessories C 1.9 Process and supervisory instrumentation, limiting and... protection devices, governing system for steam turbine plant C 2 Scope of supply, condenser plant C 2.1 Design data for total condenser plant C 2.2 Data for individual condensers C Arrangement and circuitry C Design data C Design data C Pipe connections C Materials data and corrosion protection C Other data C 2.3 Auxiliary machines and equipment for condensation C Condensate pumps C Air extraction for condenser plant C Control equipment for condenser plant C Other accessories C 2.4 Operational measuring and monitoring instruments for... condenser plant... 35

11 Project: Page: 4 Project Specification: Part C C 3 Scope of supply, generator C 3.1 Nominal data, efficiencies and losses C 3.2 Design C 3.3 Materials data C 3.4 Excitation system C Requirements for generator excitation (at operating temperatures) C Design and dimensions C Nominal data C Excitation system C Power converter transformer C Power converter system C Voltage control C De-excitation C 3.5 Generator coolers C Design data for coolers C Other data C Seal oil system C Hydrogen system C Primary water system C Other equipment C 3.6 Instrumentation and control equipment for generator C 4 Scope of supply, miscellaneous C 4.1 Main gear C 4.2 Couplings C 4.3 Turbine foundation C Type of foundation C Scope of supply of foundation C Construction of foundation C 4.4 Support C 4.5 Pipework C 4.6 Measuring and monitoring system C 4.7 Thermal and anti-condensate insulation C 4.8 Further supplies C Coatings C Tools and equipment C Documentation C Drawings C Calculations and further documents C List of most important motors C Other accessories C 4.9 Main dimensions and weight C 4.10 Spare parts and overhaul modules C 4.11 Terminal points of delivery C Terminal points of delivery for contractor C Supplies by the customer... 61

12 Project: Page: 5 Project Specification: Part C C 5 Guaranteed performance values C 5.1 Reference quantities for guaranteed values ) C General design data C Design data for feedwater preheating C Design data for steam extraction C 5.2 Basis for guaranteed performance values C 5.3 Guaranteed performance values for total unit plant C Output C Specific consumption values or efficiencies ) C Permissible excess consumption or reduction in efficiency C Running smoothness C Machine noise C 5.4 Guaranteed turbine performance values C Start-up and loading times C Speed deviations ) C 5.5 Guaranteed-performance values for condenser plant C 5.6 Guaranteed-performance values for generator C Eficiencies C Temperatures C Quality of insulation C 6 Technical specifications for total plant C 6.1 No-load steam and cooling steam consumption ) C Oil supply C Turbine coast down under vacuum C 6.2 Technical specifications for turbine C Allowable deviations from maximum possible steam flow rate C Allowable deviations from pressures C Heat losses by radiation and conduction C Steam purity C 6.3 Technical specifications for condenser plant (see A 1.6) C Leak tightness C Oxygen content of condenate C Cooling water pressure drop C Power requirement of auxiliary machines and equipment C 6.4 Technical rules and regulations C General technical rules and regulations C General rules and regulations C 7 Periods of Delivery and Assembly/Erection C 7.1 Period of delivery for total plant C 7.2 Time schedule for assembly and commissioning C 7.3 Duration of trial run C 8 Addresses... 76