Paragraph 38 General requirementsI1

Protective systems must be dimensioned in such a way as to reduce the effects of an explosion to a sufficient level of safety.

Protective systems must 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.

In the event of a power failure, protective systems must retain their capacity to function for a period sufficient to avoid a dangerous situation.

Protective systems must not fail due to outside interference.