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Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 37368-2019: Guideline for inspection of buried steel pipelines Status: Valid
Basic dataStandard ID: GB/T 37368-2019 (GB/T37368-2019)Description (Translated English): Guideline for inspection of buried steel pipelines Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: E16 Classification of International Standard: 23.040.10 Word Count Estimation: 46,431 Date of Issue: 2019-03-25 Date of Implementation: 2019-10-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 37368-2019: Guideline for inspection of buried steel pipelines---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.Guideline for inspection of buried steel pipelines ICS 23.040.10 E16 National Standards of People's Republic of China Guidelines for inspection of buried steel pipelines Published on.2019-03-25 2019-10-01 implementation State market supervision and administration China National Standardization Administration issued ContentForeword III 1 Scope 1 2 Normative references 1 3 Terms, definitions and abbreviations 2 4 General 3 5 Data collection requirements 4 6 Test plan development 6 7 Inspection implementation 7 8 Applicability evaluation 22 9 Risk-based inspection 24 10 Records and reports 28 Appendix A (Normative Appendix) Inspection of Pressure Pipes in Stations 29 Appendix B (normative appendix) Validity of buried steel pipeline inspections 35 Appendix C (Normative) Minimum requirements for metal loss magnetic flux leakage detectors 40ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Boiler and Pressure Vessel Standardization Technical Committee (SAC/TC262). This standard was drafted. China Special Equipment Inspection and Research Institute, China Petroleum & Chemical Corporation Natural Gas Branch, Sinopec Sales Co., Ltd. South China Branch, Shanghai Special Equipment Supervision and Inspection Technology Research Institute, Jiangsu Province Special Equipment Safety Supervision and Inspection Research Institute, Guangdong Special Equipment Inspection and Research Institute, Fujian Special Equipment Inspection and Research Institute, Anhui Special Equipment Inspection Institute, China Oil Pipeline Testing Technology Technology Co., Ltd., Sinopec Long-distance Oil and Gas Pipeline Testing Technology Co., Ltd., China National Petroleum Corporation Pipeline Branch Dao Technology Research Center, China Petroleum Exploration and Production Branch, Shenzhen Gas Group Co., Ltd., China National Petroleum Corporation Limited company Tarim Oilfield Branch Oil and Gas Transportation and Marketing Department, China Petroleum Pipeline Co., Ltd. West Part Company, Shanghai Jinyi Testing Technology Co., Ltd. Division, PetroChina Changqing Oilfield Company, PetroChina Daqing Oilfield Special Equipment Inspection Center, Shenyang Special Equipment Inspection and Research Institute, Chongqing Municipal Special Equipment Inspection and Research Institute, Shaanxi Natural Gas Co., Ltd. The main drafters of this standard. He Renyang, Ji Jian, Yang Xuyun, Yang Yong, Wang Xiaomei, Ma Yilai, Zong Zhaofeng, Tian Zhongshan, Tang Xiaoying, Qi Chunsheng, Yang Shubin, Yao Qin, Li Zhihong, Men Jianxin, Sun Ming, Liu Baoyu, Wang Fuxiang, Miao Wencheng, Wang Chen, Zhou Weijun, Li Anjun, Li Jie, Liang Deping, Shan Hongxiang, Xu Yong, Zhou Jun, Song Yimin, and Qi Haipeng. Guidelines for inspection of buried steel pipelines1 ScopeThis standard specifies the work flow, data collection, inspection plan formulation, inspection implementation, applicability evaluation of the buried steel pipeline inspection. The main content and basic requirements of price, risk-based inspection, recording and reporting. This standard is applicable to the inspection of buried steel pipelines in long-distance, gathering and public pipelines on land. Other buried steel pipelines can be implemented by reference.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 16805 Pressure test for oil and natural gas and high volatility liquid steel pipelines GB/T 19285 buried steel pipeline corrosion protection engineering inspection GB/T 19293 butt weld X-ray real-time imaging detection method GB/T 19624 Safety assessment for pressure vessels containing defects GB/T 21246 buried steel pipeline cathodic protection parameter measurement method GB/T 26641 Non-destructive testing magnetic memory testing GB/T 27512 buried steel pipeline risk assessment method GB/T 27699 Steel pipeline inspection technical specification GB/T 28704 non-destructive testing magnetostrictive ultrasonic guided wave detection method GB/T 28705 non-destructive testing pulse eddy current testing method GB/T 30582 Risk-based inspection and evaluation of external damage of buried steel pipelines GB/T 31211 Non-destructive testing ultrasonic guided wave detection general GB/T 31212 Non-destructive testing magnetic flux leakage testing GB 32167 Specification for the integrity management of oil and gas pipelines GB/T 32563 non-destructive testing ultrasonic testing phased array ultrasonic testing method GB/T 34346 Risk-based classification guidelines for safety hazards of oil and gas pipelines GB/T 34349 External corrosion detection method for gas pipelines GB/T 34350 oil pipeline internal corrosion detection method GB/T 35013 Pressure equipment for use evaluation GB/T 36676 buried steel pipeline stress corrosion cracking (SCC) external detection method GB/T 36701 Buried Steel Pipe Body Defect Repair Guide GB/T 37369 Inspection and evaluation of buried steel pipeline crossing section GB 50028 town gas design code GB 50057 lightning protection design code for buildings GB 50251 gas pipeline engineering design specification GB 50253 Oil Pipeline Engineering Design Specification GB 50350 Oil and Gas Gathering and Transportation Design Specification GB/T 50698 buried steel pipeline AC interference protection technical standards GB/T 50818 oil and gas pipeline engineering automatic ultrasonic testing technical specification GB 50991 buried metal pipeline DC interference protection technical standards CJJ34 town heating pipe network design specification CJJ61 City Underground Pipeline Detection Technical Regulations NB/T 47013 (all parts) Non-destructive testing of pressure equipment SY/T 4109 Non-destructive testing of oil and gas steel pipelines SY/T 5918 Buried steel pipeline external anti-corrosion layer insulation layer repair technical specification SY/T 6477 Residual strength evaluation method for oil and gas pipelines containing defects TSGD7005 Pressure Pipeline Inspection Rules---Industrial Pipeline 3 Terms, definitions and abbreviations 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 External detection externalinspection Inspection of the pipe body, corrosion protection system, etc. from the outside by instrumentation. Including external corrosion detection, external corrosion detection, Methods such as stress corrosion detection. 3.1.2 Internal detection in-lineinspection The detection of the pipe body is performed internally by the internal detecting device. Including geometric internal detection, magnetic flux leakage detection, ultrasonic internal detection, electromagnetic Ultrasonic detection and other methods. 3.1.3 Applicability evaluation fitnessforserviceassessment An evaluation of a pipe containing defects or damage to determine if safe operation can continue under the expected operating conditions. 3.1.4 Regular inspection of periodicinspection According to the requirements of national special equipment safety related laws, regulations and safety technical specifications, the periodic inspection activities carried out on pipelines in use. 3.1.5 Self-inspection independentinspection Other inspection and testing activities carried out independently by the pipeline users in addition to the requirements for periodic inspections. 3.1.6 Inspection effectiveness The qualitative and hierarchical evaluation of the test results is divided into five levels from highly effective to ineffective. 3.2 Abbreviations The following abbreviations apply to this document. ACVG. Alternating Current Gradient Method (AlternatingCurrentVoltageGradient) CIPS. Close IntervalPotentialSurvey DCVG. DC potential gradient method (DirectCurrentVoltageGradient) IR drop. voltage drop (IRdrop) LNG. Liquefied Natural Gas (Liquefied NaturalGas) PEARSON. Audio Leak Detection (PearsonSurvey) SCADA. Monitoring and Data Acquisition System (SupervisoryControlandDataAcquisitionSystems) SCC. Stress Corrosion Cracking (StressCorrosionCracking) SMYS. Specified Minimum Yield Strength (SpecifiedMinimumYieldStrength) TOFD. Diffraction time difference method ultrasonic detection (TimeOfFlightDiffraction)4 General4.1 The inspections specified in this standard refer to a verification activity for the safe state of buried steel pipelines in use. According to the nature of inspection The two types of period inspection and self-inspection are divided into two modes according to the inspection method. traditional inspection and risk-based inspection. 4.2 Self-inspection and periodic inspection may be carried out in accordance with the methods specified in this standard. The periodic inspection process shall meet the relevant requirements of this standard. In addition, it should also meet the requirements of national special equipment related laws and regulations, safety technical specifications and relevant standards. 4.3 Generally, the test is carried out using the mode of traditional inspection. The unit of pipeline that meets the conditions of 9.1.1 can also be based on the damage mode of the pipeline. And hazard factors, combined with the actual use of the pipeline, using a risk-based inspection model. 4.4 The inspection process specified in this standard is shown in Figure 1. Note. The content in the solid box is the content of the traditional inspection, and the content in the dotted box is only executed during the risk-based inspection. Figure 1 Process of inspection 4.5 The pipeline user shall formulate an inspection plan according to the actual conditions of the pipeline. The first inspection should be completed within 3 years after the pipeline is put into use. 4.6 Inspection is generally organized by the pipeline user, and is carried out by a qualified inspection agency. The pipe use unit should be The inspection is carried out smoothly to provide the necessary conditions and assist in the completion of the inspection. 4.7 The testing agency engaged in the periodic inspection of pipelines shall obtain the qualifications for inspection, testing and inspection approved by the State Special Equipment Safety Supervision and Administration Department. Testing organizations and personnel shall perform testing and evaluation within the scope of qualifications and be responsible for the truthfulness, accuracy and validity of the test results. Note. Authenticity indicates that the report and conclusion are based on facts and no false testimony; accuracy indicates that the test data involved in the report and conclusion meets the relevant requirements; Sexually indicates the qualification of the inspection institution, the qualification of the inspection personnel meets the requirements, and the instruments and equipment used are valid during the verification and calibration period. The approval process meets the requirements. 4.8 The whole process of inspection includes planning, preparation, implementation and post-disposal, etc., and should be recorded throughout the process. 4.9 For pipelines with long pipelines and multiple stations, periodic inspections should be carried out in stages. Specific segmentation method, by inspection agency and The unit is determined according to the actual situation. 4.10 The relevant requirements for station pipeline inspection are shown in Appendix A. The special inspection of the buried steel pipeline crossing section is carried out in accordance with GB/T 37369. 4.11 Encourage the adoption of new testing technologies not listed in this standard, but validate the application of new technologies. Regular inspection When applying new technologies, new technology reviews should be conducted in accordance with relevant laws and regulations. 4.12 During the inspection process, the relevant requirements for the health, safety and environmental protection of the pipeline users and inspection agencies should be observed. 4.13 The equipment, instruments and measuring tools used in the inspection process shall be within the valid calibration or calibration period.5 Data collection requirements5.1 Basic data requirements The basic data requirements are as follows. a) The basic data requirements to be collected before using the various test methods are shown in Table 1. During the inspection process, it should be in accordance with relevant standards. Request further collection of the required data. b) The data collected should be true and valid. When necessary, the collected data can be compared, analyzed and integrated to ensure the quality of the data. c) In the data collection process, when data is found to be incomplete, important data can be supplemented by on-site inspection or testing. 5.2 Data source 5.2.1 Design, manufacturing, and installation materials, including. a) design documents (including calculation books, construction drawings, specifications, strength calculations, etc.), design changes; b) Pipeline component manufacturing quality certification documents, supervision and inspection reports; c) Pipeline installation and acceptance data, pipeline installation supervision and inspection report, engineering quality inspection and assessment report. 5.2.2 Use and operation management information, including. a) Operation log and process records (including media composition analysis and abnormal case processing records, etc.); b) alteration or repair of materials, including construction plans and completion data, as well as alteration and repair supervision and inspection materials; Note. b) It is only necessary to carry out the transformation and repair of the supervision and inspection required by the special equipment safety technical specification, and it is necessary to collect the reconstruction or repair supervision and inspection data. c) emergency plan; d) managing change records; e) Operation management system and procedure documents. 5.2.3 Testing and evaluation reports, including. a) calibration and calibration data for safety accessories; b) annual inspection report during the periodic inspection cycle; c) previous periodic inspection reports; d) Enterprise self-inspection, inspection and evaluation reports and records. 5.2.4 Failure data files, including. a) leakage data; b) corrosion data; c) external force destruction data; d) Geological hazard data. 5.2.5 Existing integrity management systems or geographic information systems. 5.2.6 Relevant regulations and standards. 5.3 Data quality 5.3.1 The following main factors affecting data validity should be considered. a) expired drawings and documents; b) detecting errors; c) a clerical error; d) Insufficient accuracy of testing equipment and tools. 5.3.2 Consideration should be given to whether the normative standard used in the piping design is still a valid version and consider the impact of the version change on the test results. 5.4 Data update After the inspection, the pipeline user should refine and update the pipeline data and add it to the pipeline database.6 Test plan development6.1 Before the on-site work is carried out, the inspection agency shall, on the basis of data collection, according to the inspection plan of the user and related safety technology. Develop inspection plans based on specifications and standards. 6.2 The inspection plan shall include at least the following requirements. a) basic conditions and inspection scope of the pipeline; b) the regulatory standards on which it is based; c) Participants and division of labor; d) inspection process; e) inspection items, inspection contents, test methods, detection ratios or number of inspections; f) Recording and reporting requirements. 6.3 The inspection plan shall be consulted by the pipeline user and approved by the inspection authority authorized by the inspection authority before implementation. 6.4 When the on-site implementation of the inspection plan is not applicable or there are other special circumstances, the inspector shall follow the relevant conditions and follow the relevant quality management. The program handles the program change and carries out the inspection according to the changed plan.7 Inspection implementation7.1 General requirements for inspection implementation 7.1.1 The implementation of pipeline on-site inspection mainly includes macro inspection, internal inspection, external inspection, pressure resistance test and special inspection, among which, macro inspection The test is mandatory. Internal testing, external testing, withstand voltage test and special test are selected according to the following principles. a) Pipes with internal detection conditions, prefer internal detection. For pipes that do not have internal testing, they can be modified by piping Internal testing conditions, for pipes that cannot be modified or can not be cleaned, are carried out in accordance with b), c), and d). When using internal testing, you also need to use external The status of the anti-corrosion (insulation) layer and the cathodic protection system were tested and evaluated. b) External testing should be selected when internal testing conditions are not available. c) Pipes that are not implementable for both internal and external testing shall be subjected to a withstand voltage test. d) If necessary, carry out special inspections on pipeline crossing sections, special parts and special working conditions, special inspections include pipeline crossing The detection of the section, the physical and chemical inspection of the pipeline material under special working conditions, as well as the detection of the special part of the weld seam and the corrosion of special parts. 7.1.2 Before the implementation of the inspection, the pipeline user shall cooperate with the preparation work before the inspection to ensure that the pipeline is in the state to be inspected. 7.1.3 During the implementation of the inspection, it shall be carried out in strict accordance with the requirements of laws, standards and inspection plans, and records shall be made. 7.2 Macro inspection 7.2.1 Content of macro inspection Macro inspections generally include ground environment and facility inspections, cathodic protection system testing, electrical performance testing, geological conditions surveys, and safety. Accessories, safety devices and instrument inspection. 7.2.2 Ground environment and facility inspection Ground environment and facility inspections should include the following. a) Location and orientation. Detect the location, depth and direction of the pipeline. Statistics on floating tubes, exposed tubes, shallow buried pipes, and check Design and construction and completion acceptance data to determine whether the pipeline depth is acceptable. b) Protective belt along the pipeline. check the clearance and pressure of the pipeline and other buildings (structures); check the pipelines according to the pipeline design standards The change of the district level; in accordance with the relevant requirements of the "Petroleum and Natural Gas Pipeline Protection Law", the survey and statistics of the surrounding structures (structures) of the pipeline are investigated. 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