Can the membrane leak test for ion membranes be ignored?

For this situation, the bubble test should be considered, but given the conditions, only Bubble Test II can be performed.

When this happens, it is necessary to arrange the channels for membrane leak testing. In China, it is common for managers to abandon principles in order to achieve short-term economic benefits.

As a precaution, given such a high negative pressure difference as yours, membrane leak testing must be carried out to be on the safe side. You guys really have a lot of nerve.

With such a high pressure difference, I think it’s time to clean the tank and perform a membrane leak test

Of course, membrane leak testing is necessary. What if a leak is detected after it’s installed? Should we stop and replace the membrane? It’s not worth it! Does the person who said this – \"The relevant person in charge actually said it’s not necessary; the more you test, the more leaks there will be. It’s enough to check the voltage while driving\" – have a problem in their head? ! It’s complete nonsense! This post was last edited by limingshuguang on 2008-2-20 13:52.]

Nonsense? This is by no means nonsense. Nowadays, many chlor-alkali plants do not replace the membranes frequently during regular maintenance; usually, no leak testing is carried out at all. If you don’t believe it, you can investigate for yourself; I guess you don’t know much about this topic.

I think it is very necessary to perform membrane leak testing in this situation. If a membrane leak does occur after the system is in operation, it not only requires stopping the machine to replace the membrane, thereby disrupting its operation, but it can also cause corrosion to the electrode grids of the electrolyzer, affecting their performance. I advise against \"getting upset over small things while losing the big picture\"!

If the pressure difference exceeds the allowable range, membrane leak testing must be carried out; failing to do so will result in losses that go beyond just the cost of a few membranes

Conduct an immediate full analysis of a single channel to check for oxygen and hydrogen content. Membrane leak testing must also be carried out

A pressure difference this high indicates not only a membrane leakage issue but also the possibility that the electrode plates have suffered severe deformation. It is necessary to check for membrane leaks and disassemble the cell for inspection; operating the equipment in such conditions poses too great a risk. If the membrane is torn, it can lead to high levels of hydrogen in the chlorine, which may even cause the cell to catch fire or explode.

Agree with what was said on floor 11 – truly, the bolder one is, the higher the achievements. However, in a situation like the one mentioned by the original poster, I think most people have encountered it; there’s nothing that can be done about it. Something like this has happened in our factory before; a power outage caused an interlock shutdown, and the positive pressure difference reached as high as 30 KPa. The management refused to conduct membrane leak tests, and as a result, an explosion occurred in the chlorine treatment system during the process of increasing the current. Fortunately, no one was injured! But the management doesn’t learn from their mistakes; when similar situations arise, they still refuse to allow membrane leak testing to be carried out! Alas! ! Fortunately, nothing else happened. I really don’t know what they’re thinking. But the original poster is really impressive too – after all, the damage caused by a negative pressure difference is much greater than that caused by a positive pressure difference to the membrane!