Technical discussion_ Issue 9 (rewards for answering questions)

The air pressure test and air tightness test are qualified; nitrogen replacement and then medium replacement are qualified; if the filling medium is a liquid volatile substance, the replacement and filling must be slow to avoid stress caused by large temperature changes; the charging rate is controlled as required; the status of the relevant valves is confirmed to be in place; the safety accessories are in normal use. I hope you can give me some advice.

In addition to the air pressure test, air tightness test, nitrogen replacement, and medium replacement, a water filling test is also required. In addition, before putting it into use, the user unit should complete the registration procedures one by one in accordance with the requirements of relevant regulations, obtain the "Registration Certificate" before use, establish and improve the technical files of the container, implement the technical regulations and documents related to the container, compile and modify the company's container safety technology management rules and regulations, and provide safety technical education and training for operators.

Non-destructive testing； Settlement experiment ； The air pressure test/air tightness test is qualified; nitrogen replacement, then medium replacement is qualified ；

I agree with everyone’s opinions above and especially emphasize that it should be: 1 Perform a calibration (measurement). 2. Static grounding check.

The following preparations must be made before putting the spherical tank into use:: (1) When a new spherical tank is put into use, it must be inspected and accepted. After it meets the design specifications and design documents, it must be reported to the local labor department for approval and a certificate of use can be obtained before it can be replaced before it is put into use. ； (2) The spherical tank used for repair must have detailed repair information and inspection and repair report, and submit it to the local labor department for approval. Replacement before putting into use can only be carried out after obtaining the use certificate. ； (3) Before the spherical tank is put into use and replaced, a comprehensive inspection of the fire protection facilities in the spherical tank area must be carried out to ensure that they are in good condition. ； (4) Before replacement, it must be confirmed that the relevant isolation blind panels have been removed ； The surrounding flammable items have been removed and the operators ensure that they can operate normally. ； (5) Before replacement, it must be confirmed that the safety valve and other safety accessories of the spherical tank have been installed, intact and put into use. ； (6) When replacing with nitrogen, first open the vent valve on the upper part of the spherical tank, input nitrogen from the bottom of the spherical tank, pressurize it, and discharge it from the upper vent valve. Repeat this many times until the oxygen content of the exhaust gas is analyzed.

Totally agree with the opinion above! 2 additional points: 1. After the installation of the storage tank is completed, it should be inspected by the special equipment inspection department of the local Quality Supervision Bureau. After passing the inspection, a certificate of use should be issued. ； 2. For reverse electrostatic grounding detection, you should ask the local meteorological department to issue a lightning protection detection report.