GB/T 23711.8-2019 English PDF (GBT23711.8-2019)

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GB/T 23711.8-2019: Test method for pressure vessels lined with plastics -- Part 8: High-resistance testing
GB/T 23711.8-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.120;83.140
G 94
Replacing GB/T 23711.8-2009
Test method for pressure vessels lined with plastics -
Part 8: High-resistance 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 ... 4 
2 Normative references ... 4 
3 Principle ... 4 
4 Test equipment ... 4 
5 Sample ... 5 
6 Test method ... 5 
7 Test result judgment ... 5 
8 Test report ... 6 
Appendix A (Informative) High-resistance test report ... 7 
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 8th part of GB/T 23711.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part was proposed by China Petroleum and Chemical Industry Federation.
This Part shall be under the jurisdiction of National Technical Committee 162
on Non-metallic Chemical Equipment of Standardization Administration of
China (SAC/TC 162).
The drafting organizations of this Part: Zhejiang Xinli New Material Co. Ltd.,
Guangzhou Special Pressure Equipment Inspection and Research Institute,
Wenzhou Institute of Calibration and Testing for Quality and Technical
Supervision, Xi’an Sauron Welding Equipment Co., Ltd., Tianhua Institute of
Chemical Machinery and Automation Co., Ltd., Wenzhou Zhaoflon Co., Ltd.
The drafters of this Part: Chen Pei, Ding Jinsen, Ying Ren’ai, Yin Peng, Hang
Yuhong, Chen Guolong.
Test method for pressure vessels lined with plastics -
Part 8: High-resistance 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 high-resistance testing of
steel pressure vessels lined with plastics.
This Part applies to the high-resistance 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 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 24343, Electrical equipment of industrial machines - Insulation
resistance test specifications
JJG 690-2003, Verification Regulation of High Insulation Resistance Meters
3 Principle
Use the high resistance meter to measure the resistance value of the sample,
so as to determine whether there are defects such as leaks on the sample.
4 Test equipment
4.1 Test chamber
A high-insulation resistance meter (hereinafter referred to as "resistance meter")
whose accuracy level is not less than level-5.0 that is specified by JJG 690-
2003 shall be selected; its metrological characteristics shall meet the following
requirements: