1. Safe Operation of LPG Storage Tanks mm_+0 To prevent over-temperature and over-pressure phenomena in LPG storage tanks, the usage pressure and temperature should be controlled. The causes of over-temperature and over-pressure in LPG storage tanks include the following:
(1) Operational Errors To prevent operational errors, warning signs should be posted on critical operation devices. Clearly marked or labeled with symbols or text, these signs should indicate the opening and closing directions of valves, their open/closed states, and precautions.
(2) Overfilling of Liquefied Gases - Measures to prevent overfilling include: strictly filling according to the specified storage capacity; upon discovering overfilling, immediately attempt to remove the excess; all gauges used for filling must be regularly inspected, and level gauges should be periodically flushed; any residual liquid in the container should be included in the filling quantity; its weight cannot be ignored; when the surrounding temperature rises, spray cooling should be applied.
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Liquefied gas storage tanks are pressure vessels and are required by the state to be inspected annually (with a recommended service life of 10 years for simple pressure vessels). Since inspections are conducted, there are products that pass or fail. Generally, if a company's liquefied gas storage tank fails inspection due to improper use or inadequate maintenance, it must be compulsorily decommissioned. As liquefied gas storage tanks are special equipment, decommissioning requires a specific process. Air compressors with liquefied gas storage tanks are often considered safe special equipment, but if any stage of manufacturing, design, installation, or usage management is not standardized, accumulated risks may lead to explosions or even more severe consequences. Therefore, we must adhere to the operational procedures for air compressor liquefied gas storage tanks, avoid shortcuts, and never purchase inexpensive tanks from unqualified manufacturers. Tanks containing 1 cubic meter of 10 kg or less are considered simple pressure vessels and do not require inspection; according to national regulations, they are exempt from inspection for 7 years from the date of manufacture on the label, but this exemption applies only to the tank itself.
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