Test whether the membrane is ruptured 29.07.2022

Testing according the test 00007: Test whether the membrane is ruptured

if there are air bubbles from the hydrogene half cells set the membrane have to be changed .

Step	Step Description	Expected Result	Results
Precondition	System is off
Emptying the cells	Placing a container under the two emptying valves and open the two emptying valves so that the containers are filled with the solution of the cells.	The solution flows into the containers.	Not done
Closing of the emptying valves.	Closing the emptying valves after the whole solution flowed from the cells into the containers.	The emptying valves are closed	Not done
Let the air enter to the half-cell set of oxygen.	Connect the air compressor to one set of the half-cell sets and tur on the compressor.	Air bubbles are seen only in the one set on which the air bubbles is connected	Not done
Stop the air	Turn off the compressor.	The compressor is off	Not done
Postcondition	System off the system	System is off

Before we could start with the actual test, we first had to purge the electrolyser with nitrogen.

When we did this, water flowed out of one or more cells.

And the level of the water in the filters and in the containers for the level controllers has changed.

as one can see in the figures below:

fig 1: Water sprays out of the cells

fig 2: The level change in the filters

fig 3: The level changes in the level controlling containers

Test Analysis:

test analysis to be discussed further but we think that the membrane is ruppted and the pressure of the cells on each other has become weaker .

What we have to do:

Open the cells and change the membranes and refix the cells.