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Re: Handling SPC data
Charles Goldenzon I don't see any regulatory constraint on changing erroneous input, as long as it is discovered before a process control decision has resulted in a control action. A good control system would have error traps put in anyway for just that purpose. Password protection and supervisory control would be a good idea if there is a possibility of changing data unrelated to the current error. Ron Ron Warrick BMS ajax@innocent.com |
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