Study warning over nuclear waste: "
The disposal of nuclear waste is a long-term problem
Opponents of nuclear power have seized on an initial report which indicates that a solution to managing radioactive waste may be some way off.
The Committee on Radioactive Waste Management's final report will help the UK Government decide whether or not to support new nuclear power stations.
The Scottish Green Party said the warning shows the scale of the problem.
The Scottish Executive said there would be no more nuclear power stations until the waste issue has been resolved.
The Committee on Radioactive Waste Management is due to deliver its conclusions in July.
Dumping options
However, the draft of its initial report states: 'If ministers accept our recommendations, the UK's nuclear waste problem is not solved.
'Having a strategy is a start. The real challenge follows.'
It is not clear whether this was a reference to the difficulty of siting a nuclear waste dump.
However, the Greens have interpreted this as an admission that the problem cannot be resolved.
It all depends on what First Minister Jack McConnell and the executive accept as a solution

Louise Batchelor
BBC Scotland environment correspondent
First Minister Jack McConnell has pledged that the executive would not be prepared to consider progressing with nuclear power until the problem of nuclear waste was resolved.
He said last year: 'Until there's a solution to the problem of nuclear waste, I don't believe that we should be involved in further generation of nuclear power.
'The solving of the issue of nuclear waste seems to me to be of paramount importance because that waste currently exists and needs to be dealt with.'
Options for disposal being considered by the committee are"