Prime Minister Kevin Rudd has hedged around questioning on the location of Australia's first nuclear waste dump, saying he will look to independent science for the answer.

Four Northern Territory sites are under consideration for the dump, including Muckaty Station north of Tennant Creek.

Mr Rudd says the Government will wait for the completion of independent scientific research before making the final decision.

"There's an independent scientific process underway," he said.

"I mean we'll respond to the science on these questions.

"I think its important again to take the politics out of this and to make sure that any advice to Government is based on science ... one element of that is simply the most geologically stable site."