1.0.1 This code was formulated with a view to making fossil fired power plant (hereinafter referred to as "power plant") meet the design requirements on safety and reliability, advanced technology, economy and suitability, energy conservation and environmental protection.
1.0.2 This code is applicable to the design of such constructed, extended and renovated fossil fired power plants with parameters at or below high pressure and high temperature, power per unit less than 125MW, adopting the direct combustion mode and mainly combusting solid fossil fuel.
1.0.3 In addition to the requirements stipulated in this code, the design of small fossil fired power plant also shall comply with those in the current relevant ones of the nation.
2 Terms
2.0.1 Thermalization coefficient
The ratio of the rated heating load (deducting the self-use steam heat load) of heat supply unit to the maximum design heating load.
2.0.2 Simultaneity factor
The ratio of the regional (enterprise) maximum heating load to the sum of maximum heating load of all users (workshops).
2.0.3 Micro filtration
A kind of membrane separation technique, with filtration precision of 0.1 μm~1.0 μm.
2.0.4 Ultra filtration
A kind of membrane separation technique, with filtration precision of 0.01 μm~0.1 μm.
2.0.5 On line UPS
An uninterruptible power supply unit having such function that whether the AC working power supply is normal or not, the inverter is always in working state and is able to guarantee the uninterruptible power supply for loads through the inversion of DC power supply and output AC sine wave.
2.0.6 Electrical control and management system
A computer system performing control and management over such electrical equipment as generator transformer bank and high and low voltage auxiliary power supply of power plant by adopting open or distributed network structure on basis of the fieldbus technology, which is also referred to as ECMS.
2.0.7 Network computerized control system
A computer system performing control and management over the power network system or equipment of booster station by adopting open or distributed network structure on basis of the fieldbus technology, which is also referred to as NCCS.
2.0.8 Operator station
A man-machine interface equipment installed at the control room in control system and used for operator to conduct monitoring and controlling.
2.0.9 Parallel change-over
The change-over with the commands on the tripping of high-voltage working power supply circuit breaker and the switching in of standby power supply circuit breaker of the power plant being given simultaneously.
2.0.10 High speed change-over
The auxiliary power change-over for power plant with change-over time no larger than 100 ms when high voltage auxiliary power is in accident.
2.0.11 Engineer station
A man-machine interface equipment installed at the control room or other places in the control system and used for programming and configuration personnel to conduct logic, picture and parameter modification.
2.0.12 Air cooled heat exchangers
A kind of heat dissipation equipment cooling down the circulating water of indirect air cooling system by using air as cooling medium.
2.0.13 Air cooled condensers
A kind of heat dissipation equipment making the steam exhausted from steam turbine condense to water by using air as cooling medium.
2.0.14 Drought exponent
The ratio of the annual evaporation capacity and annual rainfall at a region.
2.0.15 Severe cold region
The region where the mean temperature of normal coldest month (i.e. the winter ventilation outdoor calculated temperature) is not higher than -10℃.
2.0.16 Cold region
The region where the mean temperature of normal coldest month (i.e. the winter ventilation outdoor calculated temperature) is not higher than 0℃ but higher than -10℃.
1 General Provisions 2 Terms 3 Basic Requirements 4 Heating (Cooling) Electrical Loads 4.1 Heating (Cooling) Electrical Loads and Heating (Cooling) Medium 4.2 Electrical Loads 5 Site Selection 6 Overall Planning 6.1 General Requirements 6.2 Internal Planning of Plant Area 6.3 External Planning of Plant Area 7 Layout of Main Plant Building 7.1 General Requirements 7.2 Layout of Main Plant Building 7.3 Overhaul Facilities 7.4 Comprehensive Facilities 8 Coal Handling System 8.1 General Requirements 8.2 Coal Unloading Facilities and External Transportation 8.3 Belt Conveyor System 8.4 Coal Storage Yard and Its Equipment 8.5 Coal Screening and Crushing Equipment 8.6 Storage and Preparation of Limestone 8.7 Control Mode 8.8 Auxiliary Facilities and Buildings for Coal Handling 9 Boiler Equipment and System 9.1 Boiler Equipment 9.2 Pulverized Coal Preparation 9.3 Air and Flue Gas System 9.4 Oil System for Ignition and Combustion Support 9.5 Auxiliary System and Equipment of Boiler 9.6 Startup Boiler 10 Ash and Slag Handling System 10.1 General Requirements 10.2 Hydraulic Ash and Slag Handling System 10.3 Mechanical Slag Handling System 10.4 Dry Ash Handling System 10.5 Ash and Slag Off-site Transportation System 10.6 Control and Overhaul Facilities 10.7 Ash and Slag Handling System of Circulating Fluidized Bed Boiler 11 Desulfurization System 12 Denitration System 13 Steam Turbine Equipment and System 13.1 Steam Turbine Equipment 13.2 Main Steam and Heat Supply Steam System 13.3 Water Supply System and Supply Pump 13.4 Deaerator and Water Supply Tank 13.5 Condensate System and Condensate Pump 13.6 Drain pump of Low Pressure Calorifier 13.7 Drain Flash Tank, Drain Tank, Drain pump, Low Flush Tank and Low Level Pump 13.8 Industrial Water System 13.9 Heating Network Calorifier and Its System 13.10 Temperature and Pressure Reducing Device 13.11 Condensed Water Recovery Plant of Steam Heat Supply Network 13.12 Steam Condenser and Its Auxiliary Facilities 14 Water Treatment Equipment and System 14.1 Water Pretreatment 14.2 Water Pre-desalination 14.3 Boiler Makeup Water Treatment 14.4 Chemical Dosing and Water and Steam Sampling for Thermal System 14.5 Cooling Water Treatment 14.6 Treatment for Makeup Water and Production Return Water of Heating Network 14.7 Chemical Storage and Solution Tank 14.8 Design and Corrosion Protection of Tanks, Grooves, Pipelines and Valves 14.9 Laboratory and Instruments 15 Information System 15.1 General Requirements 15.2 Overall Planning of Plant Information System 15.3 Management Information System (MIS) 15.4 Quotation system 15.5 Video Monitoring System 15.6 Access Guard Management System 15.7 Wiring 15.8 Information Security 16 Instrumentation and Control 16.1 General Requirements 16.2 Control Mode and Automation Level 16.3 Layout of Control Room and Electronic Equipment Room 16.4 Measurement and Instrument 16.5 Analog Quantity Control 16.6 Switching Value Control and Interlocking 16.7 Alarming 16.8 Protection 16.9 Control System 16.10 Control Power Supply 16.11 Layout of Cables, Instrument Tubes and Local Equipment 16.12 Instrument and Control Laboratory 17 Electrical Equipment and System 17.1 Generator and Main Transformer 17.2 Main Electrical Connection 17.3 AC Auxiliary Power System 17.4 High-voltage Distribution Device 17.5 DC Power Supply System and AC Uninterruptible Power Supply 17.6 Electrical Monitoring and Control 17.7 Electrical Measuring Instrument 17.8 Component Relay Protection and Automatic Safety Device 17.9 Lighting System 17.10 Cable Selection and Laying 17.11 Overvoltage Protection and Earthing 17.12 Electrical Laboratory 17.13 Electrical Device in Hazardous Explosion and Fire Environment 17.14 In-plant Communication 17.15 System Protection 17.16 System Communication 17.17 Telecontrol of System 17.18 Electric Energy Metering 18 Hydraulic Facilities and Systems 18.1 Water Source and Water Management 18.2 Water Supply System 18.3 Water Intake Structure and Water Pump House 18.4 Water Transport and Distribution Pipeline and Ditch 18.5 Cooling Facilities 18.6 External Ash and Slag Handling System and Ash Storage Yard 18.7 Water Supply and Drainage 18.8 Hydraulic Buildings (Structures) 19 Auxiliary and Ancillary Facilities 20 Buildings and Structures 20.1 General Requirements 20.2 Seismic Design 20.3 Main Mill Building Structure 20.4 Base and Foundation 20.5 Lighting and Natural Ventilation 20.6 Thermal Engineering and Noise Control of Building 20.7 Waterproof and Drainage 20.8 Interior and Exterior Decoration 20.9 Doors and Windows 20.10 Living Facilities 20.11 Chimney 20.12 Coal Handling Structures 20.13 Supporting Structure of Air Cooled Condenser 20.14 Live Loads 21 Heating, Ventilation and Air Conditioning 21.1 General Requirements 21.2 Main Plant Building 21.3 Electrical Building and Electrical Equipment 21.4 Coal Handling Building 21.5 Chemical Building 21.6 Other Auxiliary and Ancillary Buildings 21.7 Plant Cooling and Heating Stations and Pipe Network 22 Environmental Protection and Water and Soil Conservation 22.1 General Requirements 22.2 Design Requirements for Environmental Protection and Water and Soil Conservation 22.3 Prevention and Control Principles for Various Pollution Sources 22.4 Environmental Management and Monitoring 22.5 Water and Soil Conservation 23 Labour Safety and Occupational Health 23.1 General Requirements 23.2 Labour Safety 23.3 Occupational Health 24 Fire Fighting Appendix A Complete Water Quality Analysis Report Explanation of Wording in This Code List of Quoted Standards
