Experiences on a train the trainer program

An Ex trainer shall be able to demonstrate knowledge about Ex competencies back in time. Which means not only up-to-date informations, but all how it was.
Simple Example: non electrical explosion protection – EN 13463 or ISO 80079-36/-37; Ex tD or Ex tb; … and so on… Ex nA or Ex ec; … and so on …

Keep up good work!

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