GB/T 37369-2019 English PDFUS$519.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 37369-2019: Inspection and assessment of crossing and aerial crossing of buried steel pipelines Status: Valid
Basic dataStandard ID: GB/T 37369-2019 (GB/T37369-2019)Description (Translated English): Inspection and assessment of crossing and aerial crossing of buried steel pipelines Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: E16 Classification of International Standard: 23.040.10 Word Count Estimation: 26,286 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 37369-2019: Inspection and assessment of crossing and aerial crossing 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. Inspection and assessment of crossing and aerial crossing of buried steel pipelines ICS 23.040.10 E16 National Standards of People's Republic of China Inspection and evaluation of buried steel pipeline crossing section Published on.2019-03-25 2019-10-01 implementation State market supervision and administration China National Standardization Administration issued ContentForeword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General 2 5 Data collection 3 6 Test plan development 3 7 Inspection implementation 4 8 Applicability evaluation 11 9 Records and reports 12 Appendix A (informative) Cross-section annual inspection 14 Appendix B (informative) Cross-section pipeline buried depth detection 18ForewordThis 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, Shenyang Special Equipment Inspection and Research Institute, Beijing Jiaotong University, Shanghai Special Equipment Supervision and Inspection Technology Research Institute, Sinopec Sales Co., Ltd. East China Branch, Daqing Oilfield Co., Ltd. Natural Gas Branch, Sinopec Long-distance Oil and Gas Pipeline Testing Technology Co., Ltd., Shenzhen Gas Group Co., Ltd., Shanghai Jinyi Testing Technology Co., Ltd. Shaanxi Natural Gas Co., Ltd., China National Petroleum Corporation Pipeline Branch, Fujian Special Equipment Inspection and Research Institute, China National Petroleum Corporation Changqing Oilfield Branch, Shenyang Longchang Pipeline Testing Center, Sinopec Sales Co., Ltd. South China Branch Company, Tangshan Special Equipment Supervision and Inspection Institute. The main drafters of this standard. He Renyang, Huang Hui, Yang Xuyun, Ding Chunhui, Lan Huiqing, Zuo Yantian, Shen Jianfeng, Wang Yu, Xin Suqing, Li Xiufeng, Zhang Zhi, Zeng Weiguo, Han Wei, Meng Wei, Liu Ke, Gu Sulan, Dong Zhongmin, Wang Fuxiang, Wu Linjun, Qi Guojun, Wang Weibin, Liu Jun, Liu Hongxing. Inspection and evaluation of buried steel pipeline crossing section1 ScopeThis standard stipulates the basic requirements, contents and evaluation methods for the inspection and evaluation of buried steel pipeline crossing sections. This standard is applicable to the inspection and evaluation of the spanning section of buried steel long-distance pipelines, public pipelines and gathering pipelines. Industrial pipe wear The inspection and evaluation of the segment can be carried out with reference to this standard.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 9075 rope test and scrap specification GB/T 19285 buried steel pipeline corrosion protection engineering inspection GB/T 19624 Safety assessment for pressure vessels containing defects GB/T 30582 Risk-based inspection and evaluation of external damage of buried steel pipelines GB/T 34349 External corrosion detection method for gas pipelines GB/T 34350 oil pipeline internal corrosion detection method GB/T 36701 Buried Steel Pipe Body Defect Repair Guide GB/T 37368 Guidelines for the inspection of buried steel pipelines GB/T 50107 concrete strength inspection and evaluation standard GB 50205 Steel Structure Engineering Construction Quality Acceptance Specification GB/T 50344 Building Structure Testing Technical Standard GB 50423 Oil and Gas Transmission Pipeline Crossing Engineering Design Specification GB/T 50459 oil and gas transmission pipeline spanning engineering design standards NB/T 47013 (all parts) Non-destructive testing of pressure equipment TSGD7003 Pressure Pipeline Regular Inspection Rule Long Distance Pipeline3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Wire rope electromagnetic detection method wireropeelectromagnetictest The wire rope is excited by a permanent magnet or a conductive coil, and the wire is detected by detecting the main magnetic flux and the leakage magnetic field near the damage. Method of rope breakage and area loss. 3.2 Underwater pipeline inspection device underwaterpipelineinspectiondevice A cabled or cableless control used to detect the routing, burial depth, anti-corrosion layer, pipe laying environment and cathodic protection status of underwater pipelines Human submersible. 3.3 Pipeline elevation measurement pipelineheightsurvey The measurement process along the pipeline, with a certain distance to the altitude of the pipeline centerline. Note. When the underwater pipeline is used for elevation measurement, a system combining GPS and inertial navigation can be used to obtain underwater water through the calculation of the motion state during the measurement process. The GPS position and elevation of the pipeline. 3.4 Special detection specialdetection After the disaster occurred at or near the site that may affect the safety of the structural structure, such as explosions, earthquakes, landslides and mudslides, Door organization professionals use specialized technical means, supplemented by detailed testing and comprehensive analysis by special means such as on-site and laboratory testing.4 General4.1 The inspections specified in this standard are a verification activity for the safe state of crossing sections in buried steel pipelines. Inspection process It shall comply with the requirements of relevant laws and regulations, safety technical specifications and national standards such as TSGD7003 and GB/T 37368. Enterprise self-inspection The inspection items can be selected by referring to this standard. 4.2 The general procedures for periodic inspection of the spanning section include data collection, inspection plan formulation, inspection implementation, applicability evaluation, recording and reporting, and inspection. The main content and process of the test are shown in Figure 1. Figure 1 Flow chart of periodic inspection of buried steel pipeline crossing section 4.3 Inspection is generally organized by the pipeline user unit and is carried out by an inspection agency with qualifications and capabilities. 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. 4.4 The inspection and testing institutions shall obtain the corresponding inspection and testing qualifications, and the inspection and testing institutions and personnel shall engage in the scope of the approved qualifications. Testing and evaluation work, and responsible for the truthfulness, accuracy and validity of the test results. Note. Authenticity refers to reports and conclusions based on facts and no false certificates; accuracy refers to the fact that the test data involved in the report and conclusion meets the relevant requirements; Validity refers to the qualification of the inspection agency, the qualification of the inspection personnel meets the requirements, and the equipment and equipment used are valid during the calibration calibration period. Legal, the report approval process meets the requirements. 4.5 Before the implementation of the inspection work, the inspection agency shall formulate the inspection technical plan on the basis of sufficient data collection and be responsible for solving the inspection process. Technical problem. The user unit shall be responsible for coordinating the relevant unit or department relationship involved in the inspection process and providing relevant data required for the inspection. The inspection work went smoothly and provided the necessary assistance. 4.6 The user should perform the inspection and coordination work as well as the safety supervision work. The inspection personnel confirm that the site conditions meet the requirements of the inspection work. It can be inspected and the regulations of the use unit related to hot fire, electricity, aerial work, safety protection, safety monitoring, etc. 4.7 Equipment, instruments and measuring tools used in the inspection process shall be in the valid calibration or calibration period. 4.8 New testing techniques not listed in this standard may be used, but the application of new technologies should be validated. Regular inspection When using new technologies, new technology reviews should be conducted in accordance with relevant laws and regulations. 4.9 The unit of use shall conduct annual inspections of the spanning sections. The basic requirements for annual inspections are given in Appendix A. Annual inspection work completed Afterwards, the use unit should combine the test results to eliminate the hidden dangers found in the annual inspection.5 Data collection5.1 All relevant data should be collected, integrated, compared and analyzed before the cross-section inspection. The relevant data collected should be Meet the requirements of Table 1. Table 1 Data to be collected for periodic inspections across sections Data category basic information item Pipe attribute data Pipe material Pipe diameter, wall thickness Design load, pressure, temperature Wear span type and engineering grade Pipeline anti-corrosion type and cathodic protection design data Pipeline environmental data Routing features Soil type Known or possible AC/DC interference source conditions Geological and meteorological data (geological and climatic disasters such as earthquakes, landslides and mudslides) Hydrological characteristics (water level, flow rate, flood season, sediment concentration with or without icing period) Pipeline operation management data Pipeline operating parameters (pressure, temperature, etc.) Transport medium Record of problems that have occurred in the pipeline operation Inspection, repair and replacement records Corrosion investigation record Other ground inspection records Past failure data files and repair records Historical report Cathodic protection effectiveness test record Safety and monitoring system 5.2 The collected data should be true and effective. When the data is found to be incomplete during the collection process, it should pass the on-site inspection according to the importance of the missing data. The test is supplemented with data. 5.3 After the inspection, the pipeline user unit shall improve 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. The requirements of the specification, combined with the inspection of the entire pipeline, the preparation of the cross-section inspection program. 6.2 The inspection plan shall include at least the following. a) basic conditions of the pipeline; b) the regulatory standards on which it is based; c) safety precautions and inspection preparation; d) inspectors and division of labor; e) detailed inspection items, contents, methods, etc. determined according to the specific type and characteristics of crossing; f) Inspection records and reports.7 Inspection implementation7.1 Basic regulations 7.1.1 The spanning section is part of the pipeline and the inspection shall be carried out according to the type of inspection used by the pipeline inspection, crossing or spanning the structure. Forms, damage patterns, and pipeline usage determine the method and content of targeted cross-section testing. 7.1.2 Cross-section inspection generally includes macro inspection, pipe inspection and special inspection (if necessary). Cross-segment inspection generally includes macro inspection Inspection, support structure inspection, pipe inspection and special inspection (if necessary), atmospheric corrosion should also be applied to the spans where atmospheric corrosion may be present survey. 7.1.3 When a cross-section is subjected to disasters such as explosions, earthquakes, landslides and mudslides, special tests should be carried out to assess the pipeline according to the degree of impact. Security status. 7.2 Crossing section 7.2.1 Macro inspection The inspection content is generally carried out according to the type of crossing. a) Adopting a tubeless way to cross the railway and highway sections to check the foundation deformation, roadbed stability, vehicle traffic, etc.; b) Use culverts, casings and other protection methods to cross the railway and highway sections, check foundation deformation, culvert effusion, insulation bracket damage, cover Pipe contact, pipe collision, etc.; c) Use the tunnel method to cross the waters of the pipe section and check the accompanying roads, fences/protective walls, sign piles/warning signs, openings or wellheads, buttresses If the facilities are in good condition, the water surface of the water injection tunnel is leaked; d) Using the trenching method and directional drilling method to cross the water section, check the water surface leakage, river channel erosion and sedimentation changes, navigation, sand mining, Insufficient conditions such as floods, anchor piers, and cut-off valve rooms; e) Crossing the sections of the mountains and gullies to check landslides, collapses, mudslides, gullies, etc.; f) Other inspections deemed necessary by the inspector. 7.2.2 Pipe inspection 7.2.2.1 The content and method of the pipe section inspection shall be determined according to the type of inspection carried out by the pipe. Pipe inspection type is divided into implemented Pipes tested and pipes that are not internally tested. 7.2.2.2 For pipelines that have been tested internally, the cross-section inspection shall be based on the analysis of the internal inspection data, and the buried depth and anti-corrosion layer of the pipeline shall be The quantity and cathodic protection status are tested. For the method of pipeline depth detection, see B.2 in Appendix B. For pipes that have been tested internally, traversing The segment inspection shall be carried out according to the type of crossing. a) Uncased (such as directional drilling or direct burial) crossing railways and highways. 1) The test content, test method and evaluation requirements are consistent with other buried pipe inspections; 2) When there is a stray current interference source at the crossing, the stray current detection should be evaluated. When the interference level is judged as “strong”, Take interference protection measures. b) Culvert or casing way through railways and highways. 1) The test content shall include the detection and evaluation of cathodic protection status and electrical insulation, and the inspection methods and evaluation criteria shall be in accordance with GB/T 19285; 2) The proportion of the detection and evaluation of the cathodic protection condition shall be not less than 20% of the total number of crossing sections, and not less than one; 3) If an electrical insulation device is installed at the unearthed or earth-moving end, the electrical insulation test shall be carried out, and the detection ratio shall not be less than the total number of crossings. 20% of the quantity, and not less than 1; 4) When the detection finds that the cathodic protection or electrical insulation fails, the proportion of the spot check should be increased, and the proportion of the spot check should be increased by the inspector and the Determined by unit negotiation. Cathodic protection modifications and re-evaluations should be performed when cathodic protection does not achieve effective protection. c) The tunnel method has accompanying roads crossing waters or mountains. 1) The test content includes crevice corrosion detection, wall thickness detection, non-destructive testing, etc. under the bracket. 2) Pipes found or suspected to have cracks in the macro inspection shall be as specified in NB/T 47013.4 or NB/T 47013.5 The method performs non-destructive testing of the outer surface at the corresponding part. 3) When there is suspicious crevice corrosion in the position of the stent during macroscopic inspection, ultrasonic guided waves or other effective detection techniques should be used. Line defect detection. 4) When the internal inspection finds that the wall thickness is reduced by 20% or more, the ultrasonic thickness measurement method should be used for defect retesting. 5) When there is an elbow (bent pipe) in the pipe section, the thickness measurement of the elbow should be carried out by ultrasonic thickness measurement method, and the detection ratio is not less than the elbow 10% of the number of (bent pipes), and not less than 2, and make detailed records of abnormal thickness measurement points, if necessary, use far-field eddy currents, Detection techniques such as low frequency electromagnetic and ultrasonic C-scan are performed. When it is found that there is a wall thickness reduction exceeding the standard defect, The proportion of random inspections should be increased, and the proportion of random inspections should be determined by the inspectors and the users. 6) Weld burying defect detection is generally carried out by the method specified in NB/T 47013.2 or NB/T 47013.3. Weld The detection ratio of buried defects is not less than 10% of the weld seam, and is not less than 2 lanes. When re-inspection, the weld is generally not carried out. Buried defect detection, but there is an internal damage mechanism and the signs of damage or the last test found that there is a risk of exceeding the standard In the case of defects, the detection of buried defects shall be carried out at a sampling ratio of not less than 10%. When the inspection finds that there is an excessive defect, The proportion of random inspections should be increased, and the proportion of random inspections should be determined by the inspectors and the users. d) Tunneling method for water injection through waters. 1) The inspection content includes (not limited to) visual inspection using underwater pipeline inspection devices, side-scanning sonars, etc.; 2) When the internal inspection data analysis has external damage level 3 or above defects, or the appearance inspection of the anti-corrosion layer is seriously damaged, it should be pumped Water is tested in accordance with the requirements of paragraph c) of this section; 3) When conditions are met, check the water after pumping. Mainly check the corrosion of the pipe clamp system in the tunnel and the quality of the pipe Quantity, quality of pipe outer coating and cathodic protection. e) Directional drilling through the waters. 1) The test contents include pipeline position, buried depth, anti-corrosion layer, cathodic protection, etc. The anti-corrosion layer and cathodic protection status are in accordance with GB/T 19285 for evaluation; 2) The pipeline position, buried depth, anti-corrosion layer and cathodic protection test can be detected by the underwater pipeline detection device; 3) When the internal detection data analysis has external damage level 3 or above defects, and the cathodic protection does ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 37369-2019_English be delivered?Answer: Upon your order, we will start to translate GB/T 37369-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. 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