SY/T 5230-1991 Basic environmental test methods for petroleum exploration and development instruments Test C: Salt spray test SY/T5230-1991 Standard download decompression password: www.bzxz.net

Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T 523091
Basic
Environmental test methods for petroleum exploration and development instruments
Test C: Salt spray test
Published on July 19, 1991
Ministry of Energy of the People's Republic of China
Implementation on November 1, 1991
Petroleum and Natural Gas Industry Standard of the People's Republic of China Basic environmental test methods for petroleum exploration and development instruments Test: Salt spray testbzxz.net
1 Subject content and scope of application
SY/T 523091
This standard specifies the salt spray test equipment, test conditions, test procedures and monitoring methods for petroleum exploration and development instruments. This standard is applicable to the assessment of the salt spray corrosion resistance, insulation performance and aging phenomenon of the surface plating and chemical coating layers of the parts and components of petroleum exploration and development instruments.
2 Reference standards
GB2421 General rules for basic environmental testing procedures for electrical and electronic products GB2423.17 Basic environmental testing procedures for electrical and electronic products Test Ka: Salt spray test method 3 Test equipment
3.1 The salt spray test chamber (or salt spray test room) should have sufficient volume, and a jet-type salt spray device or a centrifugal salt spray device can be used. 3.2 The structural materials in the test chamber should not affect the corrosion performance of the salt spray. 3.3 The droplets condensed on the top of the salt spray test chamber are not allowed to drip directly onto the specimen. The salt spray must fall freely on the specimen and is not allowed to be sprayed directly onto the specimen.
3.4 ​​The air pressure in the test chamber must be balanced with the air pressure outside the test chamber. 4 Test conditions
4.1 The test temperature is 35±2℃.
4.2 The salt solution is prepared with sodium chloride (chemically pure or above) and distilled water, with a concentration of 5%±0.1% (m/m). 4.3 The pH value of the solution before atomization is between 6.5 and 7.2. Disk fog deposition rate: 1.02.0mL/h×80cm24.4
Atomization method: Continuous atomization is adopted.
4.6 The test duration can be selected according to the time recommended in Table 1. 5 Test procedure
5.1 Initial inspection
Perform visual inspection on the test sample. The surface must be clean and free of oil, and the metal plating layer and chemical coating layer should not have defects such as bruises and shedding. Approved by the Ministry of Energy of the People's Republic of China on July 19, 1991 and implemented on November 1, 1991
Test environment grouping
SY/T523091
Characteristics of conditions
With general air-conditioning equipment and in an environment with poor sealing performance, but without the direct influence of rain, snow and seawater vapor
Indoor or field instrument vehicles without sealing and overflow adjustment, in areas close to sea fog and a large amount of exhaust gas. Atmospheric conditions that may be directly affected by rain and snow are on ships or offshore oil platforms. The external parts of the product can be directly affected by seawater, and the internal chemical parts are in an atmosphere saturated with seawater salt for a continuous atomization time of 10 hours.
5.2 Requirements for the installation of the sample
In the salt spray test device, the sample should not be in contact with the metal sample holder to avoid the interference of contact corrosion. The specimens shall be placed in the position under normal working conditions. For example, the test surface of the flat specimen shall be at an angle of 30° to the vertical line. When conducting comparative tests on similar specimens, the specimens shall be placed uniformly to avoid errors in the test results. 5.3 Recovery
After the test, wash off the salt deposits on the surface of the specimen with running water, then rinse with steamed water at a temperature below 30°C, and then dry the surface of the specimen under normal atmospheric conditions. 5.4 Final test
5.4.1 The tested parts shall be tested according to the relevant technical requirements of each product for various types of metal coatings, chemical treatment layers and insulating materials. The metal coatings and chemical treatment layers shall not have rust spots and corrosion, the insulating materials and insulation performance shall not be reduced, and the insulating materials shall not be aged.
5.4.2 Number the test report according to relevant regulations. 5.4.3 Test method
a, visual inspection
The metal coatings and chemical treatment layers shall be tested by direct description of visual inspection or by comparison with the same parts that have not been subjected to salt spray test. Those without corrosion and rust are qualified, and those with corrosion and rust are unqualified. b. Instrument detection
The insulation performance of insulating materials shall be tested with corresponding measuring instruments, and the insulation performance shall meet the technical requirements. Additional remarks:
This standard is proposed and managed by the Petroleum Exploration and Development Instrumentation Professional Standardization Committee. This standard was drafted by the Standardization Institute of Petroleum Exploration and Development Research Institute of China National Petroleum Corporation, Ministry of Energy. The drafter of this standard is Cheng Zhongfu.
This standard continues to be effective after the review in 199
, and the review result has been approved by the State Administration of Petroleum and Chemical Industry.
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