Ex personnel competency - any Ex training/assessment and certification with 3rd party validation related to iso 17024. Even facility can be trained, assessed and certified with Ex. Ex personnel competency can be limited to ... E.g site, etc.
Hazardous area - classified into zones based on E.g iec 60079-10-1/-10-2
Ex certified installation - Ex product with 3rd party certification or manufacturer's declaration depending on country's legislation with relation to iso 17065. Designed, installed, commissioned, initially inspected in accordance with iec 60079-14; operated, maintained and inspected based on iec 60079-17 and repaired inline with iec 60079-19.
Lifetime long Ex - Ex operation of site shall be well documented and audited annually. Validation is with high value.
Keep up good work!
Arpad
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