“With the approval of acceptable to the authority having jurisdiction.”
According to iso 17024 any personnel competency certification institute it shall have the approval.
This is the good marking of any reliable Ex personnel competency system on the market.
Keep up good work.
Arpad
exprofessional.com
A basic electronic wrist watch is an example of a low voltage,
Reference should be made to the various implementations of EN 61508-3 Functional
it says: “This standard provides the specific requirements for the design, selection,
H2 units shall be considered as per assembly. All electrical and non.electrical Ex topics shall be taken into account.
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arpadveress 
