As engineers work to re-start the Large Hadron Collider (LHC), it’s hoped a new warning system will prevent malfunctions like last September’s from happening again.

In September 2008, an electrical fault in one of the splices linking two of the magnets caused liquid helium to leak into the LHC tunnel.

The leak has resulted in any scientific operations being put on hold for over a year now.

Engineers have been working on the collider since the incident, upgrading the systems to ensure everything can be monitored much more closely.

Among the upgrades is a quench protection system which, it is hoped, will monitor the splices between magnets, detecting any deterioration and stopping all power to the magnets instantly if there is, to avoid any damage.

Engineers have discovered that the collider has hundreds and possibly thousands of faulty electrical splices between magnets, and also have concerns over the magnets themselves.

For this reason, when the LHC is re-started in November, a maximum safe limit of five trillion electron volts will not be exceeded – half of the intended energy.