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GB/T 23711.1-2019 PDF English

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GB/T 23711.1-2019: Test method for pressure vessels lined with plastics -- Part 1: Spark testing
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GB/T 23711.1: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 23711.1-2019English115 Add to Cart 0-9 seconds. Auto-delivery Test method for pressure vessels lined with plastics -- Part 1: Spark testing Valid
GB/T 23711.1-2009English319 Add to Cart 3 days Spark test methods fluorine plastic lining pressure vessel Obsolete

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GB/T 23711.1-2019: Test method for pressure vessels lined with plastics -- Part 1: Spark testing

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT23711.1-2019
NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.120;83.140 G 94 Replacing GB/T 23711.1-2009 Test method for pressure vessels lined with plastics - Part 1: Spark testing ISSUED ON: DECEMBER 10, 2019 IMPLEMENTED ON: NOVEMBER 01, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword ... 3 1 Scope ... 5 2 Principle ... 5 3 Test equipment ... 5 4 Sample ... 6 5 Test method ... 6 6 Test result judgment ... 7 7 Test report ... 7 Appendix A (Informative) Spark test report ... 8

Foreword

GB/T 23711, Test method for pressure vessels lined with plastics, is divided into 8 parts: -- Part 1: Spark testing; -- Part 2: Low-temperature testing; -- Part 3: High-temperature inspection; -- Part 4: Negative pressure inspection; -- Part 5: Cold-hot cycling inspection; -- Part 6: Anti pressure testing; -- Part 7: Leak testing; -- Part 8: High-resistance testing. This Part is the 1st part of GB/T 23711. This Part was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 23711.1-2009, Spark test method for pressure vessels lined with fluoroplastics; compared with GB/T 23711.1-2009, the main technical changes, except editorial changes, are as follows: -- In "Scope", add plastic lining materials such as rigid polyvinyl chloride (PVC-U), chlorinated polyvinyl chloride (PVC-C), polyethylene (PE) (see Chapter 1); -- Delete the normative references (see Chapter 2 of version 2009); -- Modify the expression of the principle (see Chapter 2, Chapter 3 of version 2009); -- Modify the expression of test equipment (see Chapter 3, Chapter 4 of version 2009); -- Add requirements for the accuracy level of voltmeters; add a note on the name of the spark detector (see 3.1); -- Add requirements for the spark detector probe (see 3.2); -- Modify requirements for the sample (see Chapter 4, Chapter 5 of version 2009); Test method for pressure vessels lined with plastics - Part 1: Spark testing

1 Scope

This Part of GB/T 23711 specifies the principle, test equipment, sample, test method, test result judgment and test report of the spark testing of steel pressure vessels lined with plastics. This Part applies to the spark testing of steel pressure vessels lined with plastics, such as rigid polyvinyl chloride (PVC-U), chlorinated polyvinyl chloride (PVC- C), polyethylene (PE), ethylene-tetrafluoroethylene copolymer (ETFE), fluorinated ethylene propylene (FEP), perfluoroalkoxy alkanes (PFA), polytetrafluoroethylene (PTFE), and polyvinylidene difluoride (PVDF), whose container shell material is steel.

2 Principle

For the spark detector, set a minimum test voltage; scan the plastic lining through the probe. When there are defects such as micropores and cracks in the plastic lining, they are broken down under the test voltage to form a short circuit, and the electric spark detector emits an alarm sound or a spark appears at the probe.

3 Test equipment

3.1 Electric spark detector The output voltage of the electric spark detector is divided into DC and AC. DC shall be connected into a loop; AC is not required. Its output voltage range should be 5 kV ~ 20 kV; the accuracy level of the voltmeter shall be no less than level-2.5. Note: Electric spark detector is also known as spark leak detector and pinhole detector. 3.2 Electric spark detector probe According to the shape of the container, the electric spark detector can choose rod, plate, round, semi-circular, ring, fan, rake and other probes. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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