Since then, procedures have been reviewed, in order to prevent a repetition.

An engineering solution has been put in place to prevent a repetition.

For now at least, both sides seem determined to prevent a repetition of the past.

Seventy years ago, it was a high-minded dream — the centrepiece of a vision to drive closer global collaboration and prevent a repetition of the two world wars.

Following the blackout, measures were undertaken to try to prevent a repetition.