What preparations are needed before putting a liquid ammonia storage tank into use?
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As the title suggests: Let’s discuss what preparations need to be made before putting liquid ammonia storage tanks into use ? ? ?
The system is checked for leaks, followed by a hydraulic test; for this pressure test, it is necessary to notify the special inspection agency in advance so that their personnel can supervise the process. After that, an airtightness test is conducted, and then vacuuming is performed. Once vacuuming is successful, liquid ammonia can be introduced.
I basically agree with what was said above, but an additional step of purging and cleaning is needed.
What are the requirements for vacuuming? Is purging done with nitrogen? What standard does it need to meet?
Check that all ammonia tank equipment, pipes, valves, safety accessories, level gauges, etc. are present and in good condition； Remove all debris from the ammonia tank ； Prepare materials for purging, pressure testing, and replacement: N2 gas cylinders and connectors for pressure testing and replacement ； Inlet connector for purging, lifting the vent pipe using a short circuit, and so on. (Purging, pressure testing, fresh water, demineralized water, and N2 gas for medium replacement)