00:01
Hello students, when checking removed components to ensure that they are fit for purpose and determining the need to replace i .e.
00:08
Lifted items like seals and gaskets, there are some ways or methods and considerations involved.
00:18
So first one is visual inspection.
00:25
So when you see an object, when you remove an object and see it, you can just thoroughly examine visually on the removed components.
00:39
You can look for sign of wear, tear, damage, corrosion, leaks or any other visible defects.
00:45
You can inspect the seals and gaskets for the sign of degradation, cracking or loss of elasticity.
00:54
This way you can ensure the quality.
00:57
Second is dimensional check.
01:04
So critical dimensions are of the removed components against a specified tolerance has to be compared.
01:13
So like if you have a dimension of 2 inch and you see the pipe deformed to 2 .3 inch, you cannot use that thing.
01:24
So the dimensional check has to be done.
01:26
Third one is non -destructive testing i .e.
01:29
Ndt.
01:31
So you can use non -destructive testing like ultrasonic testing, magnetic particle inspection, liquid penetrant testing or x -ray inspection.
01:41
You can see the internal flaws by scanning those things through this kind of inspection.
01:47
Destructive testing is when you destroy some object to see its rigidity.
01:52
A non -destructive is by scanning that you observe if it is rigid or not.
01:57
So it doesn't affect the quality of the object.
02:02
Next is functional testing.
02:10
So when you test the components and under the simulated or actual operating conditions, like if you have a pipe and you check it in a lab, you check it with the conditions where it has to bear the maximum pressure.
02:31
So you should subject the components to pressure, temperature, vibration or any other environmental condition that is regularly available to ensure that they are going to withstand the function as they intended.
02:45
Now fifth one is service history and maintenance.
02:58
So you can review the service history and maintenance records of the components to understand the operational conditions, the maintenance intervals and any previous issue encountered...