Joseph Watts [This Is Derbyshire]
The report seeks to contrast the safety of the submarines' reactors with those used in the civil nuclear industry and concludes that they compare poorly.
In particular, it claims they are vulnerable to a structural failure, which could result in the release of highly radioactive material into the environment.
The document was released after the Campaign for Nuclear Disarmament requested it under the Freedom of Information Act.
Last night, the Ministry of Defence (MoD) confirmed it was genuine but sought to play down any fears of imminent danger.
