Is it required to re-validate the PLC of a double door autoclave used in microbiology department used for the sterility of media/garment etc.?
I am not in a favour of doing the re-validation since the same is not impacting the product quality and secondly during our autoclave validation we compare the PLC print outs with the Data generated by the data logger.
I am not sure of your question. Did you change something to force you to revalidate? Or are you talking about periodic review and load configuration revalidation?
I am talking about the re-validation of the PLC of an Autoclave.
Initially we did the validation of PLC during the OQ of the Autoclave by checking the input/output & password protection etc. Now after a period of two years is it required to re-validate the PLC of the Autoclave?
I am not sure why you would revalidate a control system if you have not made any changes to it. Revalidation just because two years past does not make any sense to me. I can understand revalidating load patterns or some of the PQ. But OQ?