Currently, I am working with an automotive company. Now I am working to improve the calibration method which each instrument need to be calibrated at least once a year. But through my reading in Japan the implement calibration based on the instrument reading itself. As long as the reading meets the specification. So my concern is there any clause or term from IATF that I can follow regarding these matters. Thank you.
Yes, in IATF 16494 clause 22.214.171.124.1 Calibration/verification records refer to the subject of the question and you should follow those requirements.
First, the organization must have a documented process for managing calibration records and those records must be retained. So, if there is no documented process first step is to create one.
The calibration activities must include the following additions:
Assessment of the risks of the intended use of the product caused by the out-of-specification condition. Here you can use the FMEA method;
Documented information on the validity of previous measurement results, if there were in place before you take the process.
For all future measurements please have this in mind; If the software is in place for the product or process control (example SCADA) there must be verification and confirmation that the software version specified for the product and process control is being used.
Also, you have to align with Japanese law on the calibration of equipment and please look at instruction on calibration that every equipment have.
Please also take a look at 126.96.36.199 Laboratory requirements, if your company has an internal laboratory.