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Delivery: <= 9 days. True-PDF full-copy in English will be manually translated and delivered via email. DL 5190.5-2019: Technical specification for thermal power erection and construction. Part 5: Piping and system Status: Valid DL 5190.5: Historical versions
Basic dataStandard ID: DL 5190.5-2019 (DL5190.5-2019)Description (Translated English): Technical specification for thermal power erection and construction. Part 5: Piping and system Sector / Industry: Electricity & Power Industry Standard Classification of Chinese Standard: P61 Classification of International Standard: 27.100 Word Count Estimation: 94,986 Date of Issue: 2019-06-04 Date of Implementation: 2019-10-01 Older Standard (superseded by this standard): DL 5190.5-2012 Quoted Standard: GB 12348 Regulation (derived from): Natural Resources Department Announcement No. 7 of 2019 Issuing agency(ies): National Energy Administration Summary: This standard applies to the construction of new, expanded or renovated thermal power generating units and conventional nuclear power island metal pipelines. DL 5190.5-2019: Technical specification for thermal power erection and construction. Part 5: Piping and system---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Technical specification for thermal power erection and construction-Part 5.Piping and system ICS 27.100 P 61 Record number. 60035-2017 People's Republic of China Electric Power Industry Standard P DL/T 5190.5-2019 Replace DL/T 5190.5-2012 Technical specifications for electric power construction Part 5.Piping and System 2019-6-4 release 2019-10-01 implementation Issued by National Energy Administration ForewordThis part is based on the "Industrial Standards System (Revision) Plan for the Energy Sector of the National Energy Administration on Issuing the.2017 And the English version of the translation and publication plan (Guoneng Zongtong Technology [2017] No. 52) requirements, in the "Power Construction Facilities Technical Specifications Part 5.Piping and Systems" DL 5190.5-2012 revised on the basis of. There are 9 parts in DL/T 5190 "Technical Specifications for Electric Power Construction Construction". --Part 1.Civil Engineering --Part 2.Boiler unit --Part 3.Steam Turbine Generator Set --Part 4.Thermal instrument and control device --Part 5.Piping and System --Part 6.Water treatment and hydrogen production equipment and systems --Part 8.Processing and Preparation --Part 9.Hydraulic structure This part is Part 5 of DL/T 5190.Piping and System This part is divided into 7 chapters, the main technical content includes. general rules, terminology, basic regulations, pipeline components and pipeline support Hanger inspection, pipeline installation, pipeline system test and cleaning, project acceptance documents, appendices, etc. The main contents of this section are as follows. 1 Add and modify some terms; 2 Add technical regulations for factory processing and preparation of medium and low pressure pipelines; 3 Add technical regulations for the construction of temporary pipeline systems for main steam, reheat steam and auxiliary steam purging; 4 Add technical regulations for filter and compensator inspection; 5 The appendix adds relevant regulations on the identification of the flow direction of the pipeline medium in the power plant; 6 Delete the installation regulations for oxygen and acetylene gas pipelines; This part was proposed by the China Electricity Council. This part is under the jurisdiction of the Thermal Power Construction Standardization Technical Committee of the Electric Power Industry. Editor-in-chief of this section. China Energy Construction Group Anhui Electric Power Construction First Engineering Co., Ltd., China Energy Construction Group Guangdong Thermal Power Engineering Co., Ltd. Participating units of this section. China Power Construction Group Nuclear Power Engineering Co., Ltd., State Nuclear Power Planning and Design Institute Co., Ltd. Division, China Power Construction Group Hebei Electric Power Survey and Design Research Institute Co., Ltd. The main drafters of this section. Chen Hu, Zeng Fei, Zhang Qingnian, Li Aixiang, Bai Jinde, Wang Zijie, Tong Wenjun, Zheng Jiu De, Zheng Qingdi, Zhang Shaomin, Jia Guangming, Yue Zengzhi, Liu Yang, Rao Chonghui, Yang Lihui, Lu Shaosheng The main reviewers of this section. Li Runlin, Zhao Ning, Zhao Zhuren, Le Jiaran, Lu Jianguo, Li Yimin, Wang Dongxin, Zhang Wen Sheng, Sun Xuzhan, Liu Zhongchuan, Jia Zhiyong, Liu Guangting, Yang Tierong, Liu Wenjin, Zhi Xiaojun This part replaces "Technical Specifications for Electric Power Construction Part 5.Piping and System" DL from the date of implementation 5190.5-2012. The opinions or suggestions during the implementation of this part are fed back to the Standardization Management Center of the China Electricity Council (local Address. No. 1 Ertiao, Baiguang Road, Beijing, Postal Code. 100761). DL/T 5190.5-2019Table of contents1 General...1 2 Terminology...2 3 Basic regulations...4 4 Inspection of piping components and supports and hangers...5 4.1 General regulations...5 4.2 Pipe inspection...5 4.3 Pipe fitting inspection...5 4.4 Inspection of flanges, gaskets and fasteners...6 4.5 Valve Inspection...7 4.6 Inspection of filter screen and compensator...8 4.7 Support and hanger inspection...8 5 Piping installation...9 5.1 General regulations...9 5.2 Pipeline factory processing and preparation...11 5.3 Installation of the four major pipelines...13 5.4 Middle and low pressure pipeline installation...14 5.5 Installation of DN65 and below pipelines...14 5.6 Installation of valves and other piping components...14 5.7 Support and hanger installation...16 5.8 Installation of temporary system for main steam and reheat steam purging...17 5.9 Installation of auxiliary steam purge temporary system...18 6 Pressure test and cleaning of piping system...20 6.1 Tightness test of soda piping system...20 6.2 Pressure test of compressed air piping system...21 6.3 Piping system cleaning...21 7 Pipeline installation technical documents...23 Appendix A Paint Color and Medium Identification of Power Plant Pipelines...24 Appendix B Common Steel Data for Power Station Pipelines...26 Appendix C Flange Gasket Material Selection...36 Appendix D Selection of Valve Sealing Packing...37 Appendix E Common Welding Joint Forms and Corresponding Treatment Methods...38 Appendix F Calculation of Pipe Head Thickness...43 Explanation of standard terms...46 List of Reference Standards...47 Article description...48 General 1.0.1 In order to strengthen the construction technology management of power construction pipeline engineering and further improve the construction quality of the project, this part is revised. 1.0.2 This section applies to the construction of new, expanded or renovated thermal power generating units and nuclear power conventional island metal pipelines. 1.0.3 In addition to the requirements of this section, the pipeline construction of power construction should also meet the requirements of relevant national standards.2 term2.0.1 Nominal size Piping system components are identified by a combination of letters and numbers. It consists of letters DN and integer numbers. This number The characters are directly related to the characteristic dimensions such as the aperture or outer diameter (in mm) of the end connector. 2.0.2 Nominal pressure It is related to the mechanical properties and dimensional characteristics of the piping system components, and is used as a reference letter and number combination identification. by The letters PN and numbers. 2.0.3 Pipe piping It is composed of pipeline components and pipeline supports and hangers for conveying, distributing, mixing, separating, discharging, measuring or controlling Control fluid flow. 2.0.4 piping components Components used to connect or assemble into pipelines, including pipes, pipe fittings, flanges, gaskets, fasteners, valves, strainers And compensator, etc. 2.0.5 pipe or tube The cross-section used to transport fluid is a circular pipe component. 2.0.6 pipe fittings A category of piping components, including elbows or elbows, tees, sockets, reducers, and heads. 2.0.7 Pipe support and hanger Various groups used to bear pipeline load, constrain pipeline displacement and control pipeline vibration, and transfer load to bearing structure The general term for parts or devices, but does not include civil structures. 2.0.8 Valves The totality of mechanical products with movable mechanism used to control the medium in the pipeline. 2.0.9 Pipe compensators It is connected with the pipeline to absorb and compensate the pipeline thermal expansion, cold contraction and other displacement devices. 2.10 bent pipes bends It has a larger bending radius and is used to change the direction of the pipe. 2.0.11 Elbows It has a smaller bending radius and is used to change the direction of the pipe. 2.0.12 welding elbows miter elbows Elbows formed by pipe or steel plate welding, and pipe segment splicing with mitered welds that are not perpendicular to the longitudinal axis of the pipe Become. 2.0.13 Supervision section of pipe The section of the steam pipeline used for metallographic structure and hardness tracking inspection. 2.0.14 creeping inflation measuring point Set on the supervision section, the device or mark for the creep deformation measurement of the pipeline. 2.0.15 roundness roundness The ratio of the difference between the maximum outer diameter and the minimum outer diameter on the same circular section of the bent part of the elbow to the nominal outer diameter. 2.0.16 wave degree wave rate Ratio of wave height to outer diameter 2.0.17 the four piping Main steam pipeline, high temperature reheat steam pipeline, low temperature reheat steam pipeline, high pressure water supply pipeline. DL/T 5190.5-2019 2.0.18 valve pressure grade3 Basic regulations3.0.1 The following conditions shall be met before pipeline construction. 1 The design and related technical materials are complete, the design technical disclosure is completed, and the construction drawings have been checked; 2 The professional construction organization design and construction plan have been approved and safety and technical disclosures have been made; 3 The construction personnel have passed the assessment according to relevant regulations; 4 The machinery and tools used for pipeline construction should be safe and reliable, and the measuring instruments should be qualified and within the validity period; 5 The construction environment and construction water, electricity, gas, etc. meet the construction requirements. 3.0.2 The storage of pipeline components and supports and hangers shall meet the following requirements. 1 Bare-mounted pipeline components and supports and hangers are classified and stored according to steel grades, specifications, and suppliers; 2 When the straight pipes are stacked, stable and reliable support cushion measures are adopted. The distance of the supporting point is determined according to the pipe diameter. The fulcrum should be located in the same vertical plane; 3 Pipes with anti-corrosion layer should be well-coated, free of rust, water, dust, and the mouth of the pipe should be blocked; 4 The nozzles of the four major pipelines processed in the factory are tightly sealed; 5 Corresponding anti-corrosion measures should be taken according to on-site storage conditions, storage time, pipe materials and other factors for pipe storage; 6 Gaskets, fillers, etc. that are susceptible to damp deterioration should be stored in a dry closed warehouse; 7 The valve is stored in a dry shed, there is no water in the valve cavity, and both ends are blocked. The valve should be placed upright with the stem facing upwards. Special valves are stored as required by the manufacturer. 3.0.3 The processing and manufacturing quality of pipeline components and supports and hangers shall comply with the relevant regulations of the current national product standards. 3.0.4 The construction of pressure pipelines and pipeline components belonging to special equipment shall comply with the current national management regulations. 3.0.5 The pipeline construction should meet the design requirements. When it is necessary to modify the design or substitute materials, it shall be confirmed by the design unit. 3.0.6 Clean construction should be implemented throughout the pipeline installation process. 3.0.7 Refer to Appendix A for pipeline paint color and medium identification.4 Inspection of pipeline components and supports and hangers4.1 General rules 4.1.1 The pipeline components and supports and hangers should have the manufacturer's product quality certification documents. 4.1.2 The inspection before use of the pipeline components and supports and hangers shall meet the following requirements. 1 Check the model, specification, material, quantity and logo according to the requirements of the design documents; 2 The geometric dimensions meet the requirements of the corresponding product standards, and the material identification is clear and complete; 3 No cracks, no shrinkage, no slag inclusion, no sticky sand, no folding, no missing welding, no heavy leather and other defects on the surface; 4 The depth of the depression should not exceed the negative deviation of the nominal wall thickness, and the actual wall thickness after treatment should not be less than the design minimum wall thickness. 4.1.3 The alloy steel pipe components and the alloy steel supports and hangers should be re-examined by spectrum and marked with material. 4.2 Pipe inspection 4.2.1 Before the construction of pipelines with a working pressure of not less than 5.9MPa or a working temperature of not less than 400°C, the manufacturer should compare The quality certification documents confirm that the following items meet the requirements. 1 Test results of mechanical properties such as tensile strength, yield strength and elongation; 2 Impact toughness test results; 3 Metallographic analysis results of alloy steel pipes. 4.2.2 The purchasing unit shall conduct quality inspection and acceptance according to the contract provisions during the claim period for imported pipes. In addition to the technical In addition to the technical conditions, there should be a customs declaration form and a commodity inspection certificate. 4.2.3 The inspection of the main steam pipe, reheat steam pipe and steam guide pipe shall meet the following requirements. 1 The factory mark such as steel stamp or paint mark on the surface of the steel pipe shall be consistent with the manufacturer's product mark; 2 The inner and outer surfaces of the steel pipe should not have defects such as cracks, folds, folds, scars, separation, etc.; cracks on the surface of the steel pipe, Remove mechanical scratches, scratches and defects with a depth of more than 1.5mm. The actual wall thickness of the removed area should be greater than the design minimum wall thickness. thick; 3 The inner surface of the hot-rolled (extruded) steel pipe should not have a straight line defect with a depth greater than 5% of the wall thickness and a maximum depth greater than 0.4mm. trap; 4 The wall thickness of the steel pipe meets the design requirements; 5 30% of the alloy steel pipes of the same specification shall be sampled for hardness inspection, and at least one of each specification shall be spot-checked; 6 The metallographic inspection of alloy steel pipes shall be carried out according to 10% of the number of the same specifications, and at least one of each batch shall be randomly checked; 7 The steel pipe shall be subjected to ultrasonic non-destructive testing according to 20% of the same specifications; 8 For low-temperature reheat steam pipes with longitudinal welds, 20% of the number of pipes of the same specification shall be selected according to the appearance quality of the welds. Test (at least one sample). 4.3 Pipe fitting inspection 4.3.1 The inspection of elbows and pipes shall meet the following requirements. 1 The surface has no defects such as cracks, no folds, no heavy leather, no dents and sharp scratches. 2 The geometric size check of elbows and elbows shall meet the following requirements. 1) The roundness of hot-bending pipes is less than 7%; the roundness of cold-bending pipes is less than 8%; the working pressure is greater than 8MPa, The roundness is less than 5%; 2) When the working pressure of the elbow is not less than 10MPa, the roundness is less than 3%; when the working pressure is less than 10MPa, the roundness Degree is less than 5%; DL/T 5190.5-2019 3) Spectral inspection of alloy steel elbows and pipes one by one; 4) Hardness inspection of alloy steel elbows and pipes; 5) Perform metallographic inspection on alloy steel elbows and pipes according to 10% of the same specifications. Not less than 1 piece; 6) The outer arc surface of elbows and elbows shall be subjected to non-destructive inspection and random inspection according to 10% of the sample quantity of the same specification. 4.3.2 The inspection of forged, hot-pressed and welded tees and reducers shall meet the following requirements. 1 The surface has no defects such as cracks, no folds, no heavy skins, no dents and sharp scratches; 2 Alloy steel tees and reducers shall be subjected to wall thickness measurement; 3 Spectral inspection of alloy steel tees and reducers one by one; 4 Alloy steel tees and reducers shall undergo hardness inspection; 5 Alloy steel tees and reducers shall undergo metallographic inspection at 10%, and there shall be no less than 1 piece of the same specification; 6 The surface non-destructive test and ultrasonic spot check of the three links and reducers shall be carried out at 10%, and there shall be no less than 1 piece of the same specification. 4.4 Inspection of flanges, gaskets and fasteners 4.4.1 The flange inspection shall meet the following requirements. 1 The sealing surface is smooth and smooth, without pores, cracks, burrs, and no through grooves; 2 Flanges with concave-convex surface or concave-convex ring fit well, and the height of the convex surface should be greater than the depth of the groove; 3 The supporting surface of the connecting bolt on the flange end face is parallel to the flange joint surface; 4 Check the dimensions of the flange and the flange to be connected on the equipment. The flange thickness tolerance meets the requirements of Table 4.4.1; 5 The gasket material of the flange meets the design requirements. When there is no design requirement, select it according to Appendix C. 4.4.2 Gasket inspection should meet the following requirements. 1 The surface of the metal gasket has no cracks, no burrs, no through scratches, no rust, etc., and its hardness is lower than that of the flange; 2 Metal gaskets and spiral wound gaskets should not have defects such as radial scratches and looseness; 3 When large-diameter gaskets need to be spliced, use oblique lap joints or labyrinth joints instead of flat joints; 4 The inner diameter of the gasket is 2mm～3mm larger than the inner diameter of the flange; 5 Spectral inspection for alloy steel gaskets; 6 The surface of non-metallic gaskets should be flat, without warping, deformation, slag inclusion, bubbles, impurities and other defects, and the edge cutting should be neat During storage, it should be placed in a dry and ventilated warehouse at room temperature to prevent direct exposure, squeeze, bend and close to heat. source. 4.4.3 The fastener inspection shall meet the following requirements. 1 The thread surface is smooth and free of dents, cracks, rust, burrs and other defects; 2 The bolts and nuts fit well, without looseness and jamming; 3 For alloy steel fasteners, the product identification, quantity and quality inspection form should be checked according to the product standard, including chemical Chemical composition, low power and high power structure, mechanical properties; 4 Alloy steel, high-temperature alloy bolts and nuts should be subjected to spectral inspection, and spectral inspection spots should be polished and eliminated; 5 For bolts whose working temperature is above 400℃ and whose specifications are not less than M32, the following inspections shall be carried out one by one. 1) Ultrasonic testing of bolts; 2) Spectral inspection of alloy steel bolts and nuts; 3) Inspection of the hardness of bolts and nuts; DL/T 5190.5-2019 6 Bolts whose working temperature is above 400℃ and whos......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of DL 5190.5-2019_English be delivered?Answer: Upon your order, we will start to translate DL 5190.5-2019_English as soon as possible, and keep you informed of the progress. 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