38.—(1) Protective systems shall be dimensioned in such a way as to reduce the effects of an explosion to a sufficient level of safety.
(2) Protective systems shall be designed and capable of being positioned in such a way that explosions are prevented from spreading through dangerous chain reactions or flashover and incipient explosions do not become detonations.
(3) In the event of a power failure, protective systems shall retain their capacity to function for a period sufficient to avoid a dangerous situation.
(4) Protective systems shall not fail due to outside interference.