GB/T 25450-2010 English PDFUS$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25450-2010: Eddy current testing of fuel element end cap weld for PHWR Status: Valid
Basic dataStandard ID: GB/T 25450-2010 (GB/T25450-2010)Description (Translated English): Eddy current testing of fuel element end cap weld for PHWR Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: F48 Classification of International Standard: 27.120 Word Count Estimation: 6,617 Date of Issue: 2010-11-10 Date of Implementation: 2011-05-01 Regulation (derived from): Announcement of Newly Approved National Standards 2010 No. 8 (No. 163 overall) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the CANDU nuclear power plant fuel element end plug welds principle of eddy current testing methods, standards, injury, equipment, testing procedures and so on. This standard applies to CANDU nuclear power plant fuel elements weld seam after processing NDT. GB/T 25450-2010: Eddy current testing of fuel element end cap weld for PHWR---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.Eddy current testing of fuel element end cap weld for PHWR ICS 27.120 F48 National Standards of People's Republic of China CANDU nuclear power plant fuel element End plug welds Eddy Current Testing Issued on. 2010-11-10 2011-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThe standard proposed by China National Nuclear Corporation. This standard by the National Standardization Technical Committee of nuclear energy. This standard was drafted. China North Nuclear Fuel Limited. The main drafters. Zhang Junjie, Li Aijun, Wang Jun, Zhang Jie, Han Ping Shan. CANDU nuclear power plant fuel element End plug welds Eddy Current Testing1 ScopeThis standard specifies the principle of the method CANDU nuclear power plant fuel element end plug welds eddy current testing, standards injuries, equipment, testing and other steps content. This standard applies to CANDU nuclear power plant fuel elements processed seam weld NDT.2 Terms and definitionsThe following terms and definitions apply to this standard. 2.1 Standard injury standardflaw In the end plug welds artificial surface tapered blind hole making, including contrast sensitivity testing standards and standard wound injury. 2.2 Sensitivity testing standards injury sensitivestandardflaw Eddy current testing system used to test the sensitivity of the standard injury. 2.3 Compare Standard injury referencestandardflaw Whether or not qualified to evaluate the element of injury standard.3 PRINCIPLE OF THE METHODAccording to the principle of electromagnetic induction law, a certain frequency of current excitation coil so that the coil produces an alternating current, the alternating current generated post Varying magnetic field, thereby generating eddy currents in the workpiece, the alternating magnetic field induced eddy currents generated by the detection coil, an induced electromotive force in the detecting coil and Induced current. When the subject of the workpiece surface or near surface defects detection coil impedance changes can be detected by measuring the coil resistance Anti or a change in voltage detected defect.4 Standard injury4.1 Dimensions Sensitivity testing standards injury. a taper of 60 ° ± 1 °, the depth of the blind hole of 0.15mm ± 0.01mm. Contrast injury criteria. a taper of 60 ° ± 1 °, a depth of 0.20mm ± 0.01mm blind hole. 4.2 Production Select the weld defect-free element in end plug welding the normal production process, with the taper indenter 60 ° ± 1 ° of welding at the end plug Production standards injury, or other equivalent method of production standards to meet the requirements of the injury. 4.3 Evaluation Taper and depth of the standard has been set with injuries tapered head pressure control, therefore, with the projector measuring head taper measuring microscopic Measuring mirror blind hole depth, taper and depth as long as requirements are met, in line with the requirements of the standard injury. 4.4 Save Save standard injury should be avoided bump end plug welds and components bending. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25450-2010_English be delivered?Answer: Upon your order, we will start to translate GB/T 25450-2010_English as soon as possible, and keep you informed of the progress. 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