On 20 December 2012 the Reliability Panel published the final report and the final revised guidelines for identifying reviewable operating incidents. 

Consistent with the requirements under the National Electricity Rules (NER), the final guidelines focus on reviewing incidents that could have a significant impact on the operation of the power system.  To this end, the final guidelines introduce the concept of ‘critical transmission elements’.  Incidents that impact critical transmission elements will need to be reviewed by AEMO.  The revised guidelines come into effect on 1 April 2013.  This provides time for AEMO to consult with stakeholders on the definition of critical transmission elements.