A small group of people have met on the steps of the Northern Territory Parliament to have their say on a proposed nuclear waste dump.

About 25 people gathered to protest against the Federal Government's proposed nuclear waste dump at Muckaty Station near Tennant Creek.

The major concerns raised were about the impact the dump could have on the environment and on the safety of local communities.

Stuart Blanch from the NT Environment Centre says the government should look at safer ways to store nuclear waste.

"Nuclear waste is currently stored all around Australia, at hospitals, research facilities, and it is being done safely," he said.

The National Radioactive Waste Management Bill enabling the establishment of a nuclear waste facility were passed in the Senate last week.

Dr Blanch says a dump would have a significant negative impact on the community and the environment.

"Just because the Territory has weaker powers under the constitution does not mean we should be the dumping ground for nuclear waste which poses a risk to the environment, to the people, to our water resources for literally 200,000 to 300,000 years," he said.

A Territory Union has also criticised the proposal to establish a nuclear waste facility at Muckaty Station.

United Voice NT spokesman Matthew Gardiner says future transportation of nuclear waste materials to the dump could be risky.

"In the past we have seen accidents with oil spills, with the railway," he said.

"We have actually seen accidents with trucking.

"One of the biggest problems we have is this waste ... if there is a spill or accident, we do not have the technical support, we do not have the emergency support to actually deal with it."