英文版DL T 5174　燃气蒸汽联合循环电厂设计规定.pdf

1 ICS 27 100 P 61 REG No J 223 2003 ELECTRIC POWER INDUSTRY STANDARDS OF THE PEOPLE S REPUBLIC OF CHINA 中华人民共和国电力行业标准中华人民共和国电力行业标准 P DL T 5174 2003 Design Rule for Combined cycle Power Plants 燃气燃气 蒸汽联合循环电厂设计规定蒸汽联合循环电厂设计规定 Issued on January 9 2003 Implemented on June 1 2003 Issued by State Economic and Trade Commission of the People s Republic of China D DL L 2 Contents 1 Scope 1 2 Normative References 2 3 General provisions 6 4 Site selection 8 5 General planning 9 5 1 General regulations 9 5 2 Out of plant planning 9 5 3 Planning of the plant site 16 6 Arrangement of main workshop building 26 6 1 General regulations 26 6 2 Arrangement form 26 6 3 Arrangement of gas turbine and its auxiliary devices 27 6 4 Arrangement of waste heat boiler and its auxiliary devices 27 6 5 Arrangement of steam turbine 28 6 6 Control room 28 6 7 Maintenance 29 7 Fuel supply equipment and system 30 7 1 Fuel oil and fuel oil treatment 30 7 2 Natural gas system and equipment 33 8 Gas turbine equipment and system 37 8 1 Gas turbine equipment 37 8 2 System 37 9 Waste heat boiler and system 40 9 1 Waste heat boiler 40 9 2 Flue gas system 41 9 3 Water supply system 42 9 4 Blowdown and exhausting system 43 10 Steam turbine equipment and system 45 10 1 Steam turbine 45 10 2 System and auxiliary equipment 46 3 11 Chemical treatment equipment and system 48 11 1 Desalting treatment of makeup water 48 11 2 Oil fueled vanadium adding inhibitor treatment 48 11 3 Feedwater boiler water correction treatment and thermal system steam sampling 48 11 4 Circulated cooling water treatment 49 11 5 Anticorrosion 49 12 Heat engineering automation 50 12 1 General regulations 50 12 2 Heat engineering automation level 50 12 3 Control mode and control room 50 12 4 Heat engineering inspection 51 12 5 Heat engineering protection 52 12 6 Thermal engineering switch volume control and interlock 54 12 7 Heat engineering simulation control 55 12 8 Heat engineering alarm 56 12 9 Decentralized control system of units 57 12 10 Plant monitoring and management information system 58 13 Electric equipment and system 59 13 1 Generator and main transformer 59 13 2 Main electric cabling 59 13 3 In plant power utilization system 60 13 4 DC system 62 13 5 High voltage power distribution device 62 13 6 Electric control building 62 13 7 Power metering device 62 13 8 Secondary cabling 63 13 9 Lighting system 63 13 10 Cable selection and cabling 63 13 11 Other electric installations 63 14 Hydraulic engineering facilities and system 65 14 1 Water management 65 14 2 Water supply system 65 4 14 3 Water intake structures and pump room 66 14 4 Pipeline and trench 66 15 Auxiliary and appurtenant works 68 16 Building and structure 69 16 1 General regulations 69 16 2 Workshop building 69 16 3 Workshop building structure 71 16 4 Structures 73 17 HVAC 75 17 1 General regulations 75 17 2 Gas turbine workshop building 75 17 3 Fuel oil system and fuel gas system structures 76 18 Environmental protection 79 18 1 General regulations 79 18 2 Air pollution control 79 18 3 Wastewater control 80 18 4 Noise control 80 18 5 Environmental monitoring and management 80 19 Labor safety and industrial health 81 20 Fire fighting 83 20 1 General regulations 83 20 2 Fire fighting of gas turbine equipment 83 20 3 Fixed fire extinguisher 84 Appendix A Normative Provisions on the starting point of the fire fighting interval 85 5 Foreword According to the requirements of Document DIANLI 1999 No 40 issued by the Power Department of State Economy and Trade Commission Notice on the Development of Professional Power Standards in 1998 Code for Design of Gas Steam Combined cycle Power Plant is formulated as the supplement of DL 5000 2000 Technical Specification for Design of Thermal Power Plants The Appendix A hereof is the normative appendix This code was proposed and is under jurisdiction of Power Industry Standardization Technical Committee This code was drafted by East China Power Design Institute and Southwest Power Design Institute This code was prepared by Wu Bang Ben Pan Xiliang Yuan Yin Liu Kaihua Fu Huanxing Chen Cunen Zhu Yingzhen Chen Weixing Zou Changrong Yang Jinzhu Yang Zhaocun Xu Biao Li Xiaojian Gu Chenglong Shao Jiren Shi Huabiao Mo Neiping and Wang Wei This code is interpreted by East China Power Design Institute 6 1 1 Scope This national standard specifies the design philosophies and construction standards of gas steam combined cycle power plants This code is applicable to the new and extended simple cycle and gas steam combined cycle power plants whose standard rated output of the gas turbine is 25MW 250MW as well as renovation works for the similar units the gas turbine power plants and the cogeneration gas turbine power plants whose standard rated output of gas turbine is less than 25MW also can refer to the provisions of this code for application 2 2 Normative References The following standards contain provisions which through reference in this text constitute provisions of this national standard For dated reference subsequent amendments excluding amending error in the text to or revisions of any of these publications do not be applied However the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these references are applied or not For undated references the latest edition of the normative document is applicable to this national standard GB 150 Steel Pressure Vessels GB 3095 Ambient Air Quality Standard GB 3096 Standard of Environmental Noise of Urban Area GB 4053 1 Safety Specification of Fixed type Vertical Steel Ladder GB 4053 2 Safety Specification of Fixed type Inclined Steel Ladder GB 4053 3 Safety Specification of Fixed type Industrial Guard Rail GB 4053 4 Fixed type Industrial Steel Platform GB T4064 General Rules for Safety Design of Electrical Equipment GB 5083 General Rules of Safety and Health Design of Production Facilities GB T 7064 Technical Requirements of Turbine type Synchronous Machine GB T 7409 Excitation System of Synchronous Machine GB 8196 Safety Requirements on the Protective Covering of the Mechanical Equipment GB 12348 Plant boundary Noise Standard for Industrial Enterprises GB 13223 Emission Standard of Air Pollutants for Thermal Power Plants GB T 14099 Gas Turbine Procurement GB 14285 Technical Regulation of Relay Protection and Safety Automation Gear GB 50011 Code for Seismic Design of Building 3 GB T50033 Lighting Design Code of Industrial Enterprises GB 50040 Specifications for the Basic Engineering of Power Machine GB 50046 Code on Anticorrosive Design of Industrial Buildings GB 50049 1994 Design Code of Small scale Thermal Power Plant GB 50057 Design Specifications for Lightning Protection of Building GB 50058 Design Code for Power Facilities in the Circumstances with Explosion and Fire Danger GB 50060 Design Code of 3 110kV High voltage Switchgear GB 50062 Design Code on Relay Protection and Automatic Gear of the Power Installations GB 50183 Fire Prevention Code of the Design of Oil and Gas Projects GB 50191 Code on A seismic Design of Structures GB 50192 Design Code of River Harbor Projects GB 50217 Design Code of Power Engineering Cables GB 50222 Code for Fire Prevention in Design of Interior Decoration of Buildings GB 50229 Fire Prevention Code for the Design of Thermal Power Plant and Transformer Station GB 50251 Design Code of Gas Pipeline Project GB 50260 A seismic Design Code of Power Installations GBJ 12 Design Code for Full Gauge Railway of Industrial Enterprises GBJ 16 1987 2001 version Fire Prevention Code of Building Design GBJ 19 Design Code for Heating Ventilation and Air Conditioning GBJ 22 Design Code of Roads in Plant and Mine GBJ 65 Design Code for the Ear thing of Industrial and Civil Power Installation GBJ 74 Design Code of Petroleum Storage 4 GBJ 87 Design Code for Noise Control for Industrial Enterprises GBJ 101 Modular Coordination Standard for Building Staircases GBZ 1 Health Standard on Design of Industrial Enterprises GJ 3082 Water Quality Standard on the Drained Sewage in the Urban Sewers DL 408 Safe Operation Specifications on Electric Utilities DL 612 Supervision Specifications on Power Engineering Boiler Pressure Container DL T 620 Over voltage Protection and Insulation Coordination for AC Electrical Installations DL T 621 Grounding for AC Electrical Installations DL T 650 Technical Conditions on Self shunt Excitation Static Excitation System of Large Steam turbine Generators DL T 843 Technical Conditions on AC Exciter Excitation System of Large Steam turbine Generators DL 5000 2000 Technical Specification for Design of Thermal Power Plants DL 5003 Technical Regulation for Deployment Automation Design of Power System DL 5007 Technical Specification on Construction and Acceptance of Power Plant Construction Projects Welding of Thermal Power Plant DL 5022 Technical Regulation for the Civil Work Structural Design of Thermal Power Plants DL T 5029 Design Standard for Architectural Finishing of Thermal Power Plants DL 5031 Technical Specification on Construction and Acceptance of Power Plant Construction Projects Pipeline DL T 5035 Technical Regulations for HVAC Design of Thermal Power Plants DL 5053 Design Specifications on Labor Safety and Industrial Sanitation of Thermal Power Plant DL T 5072 Design Code of Insulated Paint for Thermal Power Plant DL T 5094 Code for Architectural Design of Thermal Power Plants 5 DL T 5095 Technical Specifications on the Load Design of the Main Building of Thermal Power Plants JB T 8953 2 Procurement of Gas Steam Combined cycle Equipment Steam Turbine JB T 8953 3 Procurement of Gas Steam Combined cycle Equipment Waste Heat Boiler JTJ 211 Design Code of General Plane of Seaports SDJ 5 Technical Regulation on the Design of High Voltage Switchgear SY 0007 Design Code for the Steel Pipeline and Tank Corrosion Control Works SY T 0466 Construction and Acceptance Specification on Natural Gas Gathering Pipeline 6 3 General provisions 3 0 1 Gas turbine power plants are generally classified as simple cycle gas turbine power plants and gas steam combined cycle power plants hereinafter referred to as gas turbine power plant 3 0 2 This code mainly describes the design provisions related to the gas turbine power plants the rest parts shall be implemented according to the provisions of DL 5000 3 0 3 The effects of gas turbine power plants on the power grid shall be defined according to the resource conditions and power grid planning The planning and design of the gas turbine power plants shall be considered comprehensively and carry out technical economic comparison so as to obtain the maximum comprehensive economic benefits 3 0 4 The design of gas turbine power plant must be carried out according to the basic construction procedure specified by the country The design condiments hereof shall complete the approval formalities according to the specified content and depth 3 0 5 Gas turbine power plant has advantages in such aspects as short construction period low initial investment little flooring area water conservation environmental protection power generation efficiency and load peak shaving so it can be built nearby the loaded area or the towns When there are higher requirements on environmental protection or the implementation of oil gas is available and the technical economic comparison is rational it s suitable to set up combined cycle power plant 3 0 6 For the projects that introduce the imported equipment and utilize the introduced technologies to produce the primary equipments not only the internationally universal standard and the national standards of the supplier but also the technical requirements specified in this code shall be complied with 3 0 7 The waste heat boiler of this code is free of afterburning 3 0 8 The newly built extended or renovated gas turbine power plants can adopt gas fuels including natural gas liquefied natural gas and liquefied petroleum gas or liquid fuels including light oil heavy oil and crude oil 3 0 9 The gas turbine power plant can according to the implementation of the fund and the load requirements of the regional power grid or that the units can annually utilize just few hours annually first set up simple cycle equipment and subsequently the combined cycle one In the design it shall not inhabit the possibility to set up combined cycle equipment or extend the capacity according to the planning 3 0 10 When there is heat supply demand and the technical economic condition is available the gas turbine power plant shall consider the cogeneration in priority Its unit selection and system configuration shall be suitable to cogeneration 3 0 11 In the design of gas turbine power plant the relevant national laws and regulations 7 must be complied with Proper measures shall be adopted to reduce the waste gas wastewater noise and environmental impact of the power plant The emission of harmful substances must be compliant with the relevant provisions of environmental protection labor safety as well as industrial health The engineering facilities of pollution prevention labor safety and industrial health must be designed constructed and put into operation in parallel with the main structures 3 0 12 The a seismic design of the gas turbine power plant must carry through the prevention guidelines for those gas turbine power plants needing protection as required their processes and civil designs must meet the relevant a seismic design codes and adopt the effective a seismic and shock absorption measures 3 0 13 Under the rational preconditions of ensuring the safe operation and technical economy the public utilities of the gas turbine power plant shall utilize the adjacent social capabilities to reduce the initial investment or staffing sizes in proper conditions 3 0 14 In the design of gas turbine power plant not only the requirements stipulated in this code but also those in the current relevant ones of the nation shall be complied with 8 4 Site selection 4 0 1 The site selection of the gas turbine power plant shall comprehensively consider the power planning gas pipe network planning fuel supply condition urban town planning water supply relation with the neighboring industrial enterprises local natural condition transportation condition environmental protection and the construction planning 4 0 2 The site selection should utilize the non cultivated land and poor land and the earthwork shall be reduced as much as possible 4 0 3 The site mustn t be set up in the areas where the Landslide and karsts is mature or the seismic break ground or the seismic area whose basic intensity of seismic shock is higher than 9 degree the plant site shall sheer off the key protective natural regions and cultural relics regions as well as the sites where the risk of crag creeping rubble and debris flow is high 4 0 4 The site selection shall sheer off the areas where the air is frequently badly polluted by the suspended solid articles 4 0 5 When selecting the plant site the traffic conditions of the fuel and large scaled equipments shall be implemented When selecting the site for the gas fueled gas turbine power plant the site shall subject to the gas pipeline planning and the gas transmission station layout to make the distance of the gas pipeline is the shortest and easy for accessing 4 0 6 The site selection shall f consider fully the transmission line conditions and leave adequate transmission line corridor according to the gas turbine power plant planning 4 0 7 The boundary noise level of the plant site shall meet the provisions of GB 12348 and GB 3096 9 5 General planning 5 1 General regulations 5 1 1 The general planning of the gas turbine power plant shall plan the plant site construction area water bank transportation and outlet corridor according to the urban planning and the approved planning capacity 5 1 2 The general planning of the gas turbine power plant must save the utilization of land and the scope of the plant site shall be defined according to the planned capacity and the land shall be expropriated in stages 5 1 3 The general planning of the gas turbine power plant shall meet the provisions of environmental protection to protect the land and water resources 5 2 Out of plant planning 5 2 1 The out of plant water supply and drainage facilities of the gas turbine power plant shall be planned according to the planed capacity water source topography geography and environmental protection requirements The uniform plan shall be implemented in stages and coordinated with the neighboring enterprises 5 2 2 For the technical planning capacity of the gas turbine power plant the width of the uniformly planned transmission line corridor shall be coordinated with the general planning of the plant site 5 2 3 The out of plant transportation mode of the fuel of gas turbine power plant shall be adapted to the local conditions through technical economic comparison the pipeline roadway waterway and railway will be selected rationally 5 2 4 The exclusive gas pipeline of the gas turbine power plant shall be directly buried or over headed being compliant with the related requirements of fire fighting specifications 5 2 5 According to the fuel oil pipeline the gas pipeline network planning and the natural gas transmission station arrangement the exclusive fuel oil gas pipeline corridor of the gas turbine power plant shall be planned rationally and the pipeline corridor hereof shall meet the provisions of the town planning The fire fighting interval between the out of plant buried crude oil transmission pipeline and the buildings structures see Appendix A the same below should meet the provisions of Table 5 2 5 1 the over ground crude oil pipeline shall be increased by 50 according to the provisions of Table 5 2 5 1 and the fire fighting interval between the out of plant buried natural gas transmission pipeline and the buildings structures shall meet the provisions of Table 5 2 5 2 an