10 Dec, 12:23
Ireland's John Lacey will referee his first ever RBS 6 Nations match in February, while Alain Rolland is also included in the Elite Panel in what is his last season.
He said that they were in daily contact with the Dragons and a decision would be taken on Thursday as the Welsh side are due to fly then.
"We are looking at ways to blow heat under another cover to try and thaw the ground," he said.
"Northampton have had similar problems like this in the past and we have been talking with them. We are looking at all options and we have taken IRFU advice and all others."
The CEO said the postponing of last Saturday's Magners League match against Leinster was the first time he recalled a game not taking place at the venue.
"In my time, we have never postponed a game here. John Holland, the former groundsman who is around a lot longer than me, said that it was 1963 when we last had a freeze like this," added Kelly.