Metal finishing Q&As since 1989

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Salt Spray Inspection by multiple operators

I currently have a Salt Spray job that is 240 hours in total duration. It requires 8 hour inspections. I feel that it is innapropriate to have 2 inspectors inspect one job due to variation. Is this true. I would like to know if anyone knows of any documentation, standard that notes this so I can prove this point. Any comments would be appreciated.

Thanks

William Pederson
corrosion testing - Livonia, Michigan
2005

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Hi William,

The number of inspectors shouldn't make a difference if your salt spray test is set up properly. You don't describe the details of what you are testing, but I'll give you an example. If I am testing to see whether a new paint is a sutiable replacement for my current paint, I will prepare two sets of test panels. One set will be coated with the current paint and the other with the new paint. I already know how my current system performs in the salt spray test. This is my standard, and I'll compare the performance of the new paint to that of the standard. Because the salt spray test is designed to provide comparative results, it shouldn't matter who is looking at the test panels.

George Gorecki
- Naperville, Illinois
2005