Dec 21 (Reuters) - Viva Energy Group Ltd VEA.AX :
* NOV PERFORMANCE IMPACTED BY WEAKNESS IN REGIONAL REFINING MARGINS ALONG WITH UNEXPECTED OUTAGE OF 3RD-PARTY POLYPROPOLENE PLANT
* REGIONAL REFINING MARGINS IN DECEMBER TO DATE HAVE DETERIORATED BELOW NOV PERFORMANCE
* NOV PERFORMANCE IMPACTS WERE PARTIALLY OFFSET BY HEDGING GAINS.