We have installed 2 Liquid Oxygen Tanks. Each of them is 5,000 L. We have cooled at the first filling both of them. After the hospital started to use them, we saw that consumption is very low. We have closed one of them, and only 1 tank is still not finished in 3 months. On the other hand, we started to face vaporization inside the liquid tank as the pressure daily increases until the ventral opens and evacuates for safety. Is this normal? If we keep a 5,000 L Liquid Oxygen tank without using it, is there a standard self-evacuation due to vaporization? How much vaporization is within standards?
From Kazakhstan, Ust-Kamenogorsk
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From Kazakhstan, Ust-Kamenogorsk
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We didn’t closed both of them. We have closed 1 full tank as a reserve and other one for consumption.
From Kazakhstan, Ust-Kamenogorsk
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From Kazakhstan, Ust-Kamenogorsk
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Your query is not understood. Consumption is need-based. If you mean oxygen flow rate, then that can be checked from ONLINE gauge. Kindly clarify.
Do not keep one tank as reserve, use the two tanks alternatively, we follow this method.
From India, Delhi
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97Do not keep one tank as reserve, use the two tanks alternatively, we follow this method.
From India, Delhi
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Thank you for your response. Let me try to explain it like this. We have a LOX 5000L tank that we do not use, resulting in zero consumption. We filled it three months ago, and after this period, we noticed that only 1.5 liters were left. There are no issues with leasing, insulation, or vacuum in the tank.
The manufacturing company explained that even if the tank is isolated, some heat transfer will still occur, leading to vaporization. This constant vaporization causes an increase in pressure inside the tank. Once the pressure reaches a certain level, the tank's safety valve opens to release the vaporized oxygen, resulting in the loss of oxygen from the tank.
Therefore, I wanted to ask if you have encountered a similar situation. Is it normal for unused but full LOX tanks to experience this? I have read online that a vaporization rate of 0.15-3% per day is considered normal in such cases. Have you had any similar experiences?
From Kazakhstan, Ust-Kamenogorsk
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The manufacturing company explained that even if the tank is isolated, some heat transfer will still occur, leading to vaporization. This constant vaporization causes an increase in pressure inside the tank. Once the pressure reaches a certain level, the tank's safety valve opens to release the vaporized oxygen, resulting in the loss of oxygen from the tank.
Therefore, I wanted to ask if you have encountered a similar situation. Is it normal for unused but full LOX tanks to experience this? I have read online that a vaporization rate of 0.15-3% per day is considered normal in such cases. Have you had any similar experiences?
From Kazakhstan, Ust-Kamenogorsk
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Thank you for your response. Let me try to explain. We have a LOX 5000lt tank that we do not use. There is zero consumption as we have kept all the valves closed. The tank was filled 3 months ago, and after this period, we noticed only 1500 liters remaining. There are no lease, isolation, or vacuum issues with the tank.
The manufacturing company informed me that even when the tank is isolated, there will still be some heat transfer, leading to vaporization. This continuous vaporization increases the pressure inside the tank. Once the pressure reaches a certain level, the tank's safety valve will open to release the vaporized O2, causing the tank to lose O2.
I wanted to ask if you have encountered a similar situation. Is it normal for unused but full LOX tanks to experience this? I have read online that a daily vaporization rate of 0.15-3% is common in such cases. Have you had any similar experiences?
From Kazakhstan, Ust-Kamenogorsk
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The manufacturing company informed me that even when the tank is isolated, there will still be some heat transfer, leading to vaporization. This continuous vaporization increases the pressure inside the tank. Once the pressure reaches a certain level, the tank's safety valve will open to release the vaporized O2, causing the tank to lose O2.
I wanted to ask if you have encountered a similar situation. Is it normal for unused but full LOX tanks to experience this? I have read online that a daily vaporization rate of 0.15-3% is common in such cases. Have you had any similar experiences?
From Kazakhstan, Ust-Kamenogorsk
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Yes, loss will be there, even if left unused.
We have installed a PSA for our requirement, and LMO and cylinders are for backup. We have a law in Delhi that all hospitals are required to have their own PSA plant due to experience gained during the COVID-19 pandemic. That is the reason why we keep LMO as a backup.
From India, Delhi
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We have installed a PSA for our requirement, and LMO and cylinders are for backup. We have a law in Delhi that all hospitals are required to have their own PSA plant due to experience gained during the COVID-19 pandemic. That is the reason why we keep LMO as a backup.
From India, Delhi
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