NFLA submarine champion raises concerns over Clyde Tritium contamination

NFLA sub champion raises concerns over Clyde Tritium contamination

The Nuclear Free Local Authorities have written to the Defence Secretary and the Head of the Scottish Environment Protection Agency over recent revelations that radioactive tritium discharges from nuclear subs operating in the Clyde are on the increase.

Investigative journalist Rob Edwards recently published the damning findings in award-winning paper The Ferret[i]. The latest data from the Scottish Environment Protection Agency’s Scottish Pollution Release Inventory[ii] shows that emissions of the radioactive gas, tritium, from military nuclear operations on the Clyde into the air and sea have more than doubled over the last six years.

His Majesty’s Naval Base Clyde in Scotland is home to the Royal Navy’s Submarine Service. When not at sea on patrol, the navy’s four Vanguard and five Astute nuclear powered submarines are berthed at Faslane. Whilst Astute are conventionally armed submarines, the Vanguards are each equipped with Trident missiles with nuclear warheads deployed on a rotational basis as a so-called ‘continuous-at-sea deterrent’.

Eight miles from Faslane across the Gare Loch at Coulport is the shore facility where the missiles and warheads are stored. These are fitted or removed from the submarines at an explosive handling jetty, with warheads being periodically and controversially taken by road convoys to and from Aldermaston for maintenance.

21st November 2024

NFLA sub champion raises concerns over Clyde Tritium contamination

The Nuclear Free Local Authorities have written to the Defence Secretary and the Head of the Scottish Environment Protection Agency over recent revelations that radioactive tritium discharges from nuclear subs operating in the Clyde are on the increase.

Investigative journalist Rob Edwards recently published the damning findings in award-winning paper The Ferret[i]. The latest data from the Scottish Environment Protection Agency’s Scottish Pollution Release Inventory[ii] shows that emissions of the radioactive gas, tritium, from military nuclear operations on the Clyde into the air and sea have more than doubled over the last six years.

His Majesty’s Naval Base Clyde in Scotland is home to the Royal Navy’s Submarine Service. When not at sea on patrol, the navy’s four Vanguard and five Astute nuclear powered submarines are berthed at Faslane. Whilst Astute are conventionally armed submarines, the Vanguards are each equipped with Trident missiles with nuclear warheads deployed on a rotational basis as a so-called ‘continuous-at-sea deterrent’.

Eight miles from Faslane across the Gare Loch at Coulport is the shore facility where the missiles and warheads are stored. These are fitted or removed from the submarines at an explosive handling jetty, with warheads being periodically and controversially taken by road convoys to and from Aldermaston for maintenance.

Emissions of radioactive tritium from the associated Royal Naval Armaments Depot on Loch Long into the air have risen steadily from 1,770 megabequerels (MBq) in 2018 to 4,224 MBq in 2023, whilst the Faslane base discharged over 50,000 MBq of tritium contaminated effluents into the Clyde between 2018 and 2023; this peaked at 16,609 MBq in 2020.

The NFLAs have always been concerned about the long-term impact on human and marine animal health of exposure to radioactive contamination, and have repeatedly challenged the practice by military and civil nuclear authorities of discharges into the air, land and watercourses.

Discharges of tritium are an especial concern. Tritium has been found in sewage, waste and ballast water expelled by the submarines. It is also found in reactors and is an essential component of nuclear warheads. The Vanguard submarines are very old and their crews are being stretched by testing patrols which are getting longer. Old boats are more likely to leak and tired crews are more likely to make mistakes.

Dr Ian Fairlie, an expert on radioactivity in the environment, who has previously advised the UK government, told The Ferret that he found the emissions “worrying”. Dr Fairlie explained why: “First, they are large, more than four billion becquerels per year; second, they are steadily increasing; and third, they are of tritium – which is very hazardous when it’s inhaled or ingested” .

Whilst much of our recent attention has been focused on pushing back against the practices of discharges at Dounreay, Sellafield and Trawsfynydd, the NFLAs’ Spokesperson on Nuclear Submarine issues, Councillor Brian Goodall has used Rob’s revelations to write to Labour’s Defence Secretary, John Healey, and the Chief Executive of the Scottish Environmental Protection Agency, Nicole Paterson with his questions and concerns.

Most specifically, Councillor Goodall is seeking clarification of the reasons for the increase in tritium discharges and also the steps being taken by the Ministry of Defence to reduce them and – given our previous criticism of the agency’s oversight at Dounreay – by the SEPA to monitor them. 

November 23, 2024 - Posted by Christina Macpherson | radiation, UK