A Northern Territory MP says he's disappointed members of his own party have voted in favour of a nuclear waste dump in his electorate.

The House of Representatives passed the bill 68 to six yesterday, for the facility to be built on Muckaty Station near Tennant Creek.

The Northern Territory site is the only one that's been seriously considered for the dump in recent years and had previously been opposed by the Federal Labor Party.
Labor's Gerry McCarthy says the residents in his Barkly electorate don't want the dump and will continue fighting it.

"I am representing hundreds of people from the Barkly who are opposed to this, and not just the Muckaty Traditional Owners," he said.

"There are a lot of people across the pastoral industry, for instance, [who are against it]. We share those constituents and Warren Snowdon will be held accountable, just as I will be held accountable."

Mr Snowdon, the Federal Labor Member for Lingiari, says he voted in favour for a nuclear waste facility in the Territory because it's important for the national interest.