As problem of title, I have received the problem report from quality assurance department.
I would like to inform about problem report detail.
- Problem detail
Product : ARTG45LHTA(T007254)
Problem contents :
leak have occur at the this product that was installed 7 weeks ago.
we try to find the leak point, but, we can’t find. - Analysis result
1. FGL confirmed the manufacture report of factory, then, problem is nothing at this product.
2. Tested for using sample unit, but they could not find the leak point.
(i) After fill up helium gas by 1.2 MPa, then, carried out the leak test at production line.
(ii) After fill up helium gas by 2.16MPa, then, carried out the sink test.
(iii) After (ii) test, carried out the tightness test until 1 night
<note>
The tarnish of below picture was not oil.
it is from heat of welding in factory.
As the result, leak point could not find at factory also.
So, if the same problem will occur, FGL will try to investigate (not only Heat exchanger but also other connection components).