Serve the construction of the South-to-North Water Diversion Project to ensure the accuracy of experimental instruments
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The engineers of the Municipal Quality, Technology, Supervision, and Testing Center took up the testing tools and walked into the laboratory of the project department. These experimental instruments are used for experimental construction. According to regulations, these laboratory instruments must be certified by the local certification authority before they can be put into engineering experiments. According to relevant regulations, laboratory certification must be performed by two people at the same time. The engineer first certified the accuracy of a 200-ton pressure tester.
After the standard dynamometer is placed on the pressure bracket on the left side of the testing machine and fixed, the delivery valve pressure on the right side of the testing machine is controlled. Record the readings on the standard dynamometer and tester simultaneously. At the end of the test, they recorded 6 points of readings together. The test machine display level is 1, according to the test requirements, the reading error should be maintained within ± 1%. Judging from the on-site measurement results and practical experience, this tester is basically qualified.
The inspector must hold a certificate as required, and according to the provisions, he must perform qualification certification once every five years. Only through two tests in theory and practice can he issue a qualification certificate. In order to ensure the accuracy of inspection and testing, the testing instruments they use have to be certified by relevant provincial departments every year. The staff of the length room and medical room of the Municipal Quality and Technical Supervision Inspection and Testing Center that went to the on-site certification also tested the relevant instruments.
In engineering laboratories, the most experimental instruments involve mechanics. On the same day, they had to carry out on-site testing of nearly 20 mechanical instruments such as mixers, electronic balances, electric folding machines, concrete vibrators, and concrete compaction tables. After returning, they must also carefully calculate all test data, and they must be able to issue standards. Qualification certificate. If they do not meet the standards, they will come to the scene to re-calibrate the instrument, that is, data debugging, re-verification, until qualified. Laboratory certification is an important part of engineering construction. Since January of this year, they have conducted more than 10 on-site certifications for the South-to-North Water Diversion Project.