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Dear Ahmed,
rarely I found myself observing situations in which the problem was sum 'linear' of individual problems. In MEP systems the interferences between hardware problems (p.e.: valve malfuncion) and problems on the systems of regulation and control (p.e.: PID malfuncion) creates non-linear condition that require different analysis tools. So, my idea is that the superposition principle is applicable in condition in which the maintenances problems are always similar nature (p.e.: mechanics).
Dear Eng. ahmed fathy
To be honest, I may use this way in some tight situation when I have to make critical descion that delay or incorrect action may lead to fatal loss.
Mina
i prefere to use win to win method
No, I didn't use it before
