This shows a manual ball valve with a clear diagram beside showing that it should be closed for normal operations. This valve in the past before the label was fitted was opened by someone during production who assumed it had been close by mistake.This caused problems and down time with the process which is meant to run with just pure nitrogen from another seperate valve. It wasn't until the next morning when an experience technican came in that the problem was found.
There is literly thousands of ball valves in the factory so it is vital to know what state they should all be in.
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