nuclear-news

Fish Hell – impacts of sea water nuclear cooling systems

12 July 2023 https://www.banng.info/news/regional-life/fish-hell/

Varrie Blowers looks at the devastating impacts of sea water cooling systems on the marine environment in the July 2023 edition of Regional Life

What amounts to a ‘fish hell’ is being proposed at the Hinkley Point C (HPC) new nuclear power station. This provides an indication of what might happen on the Blackwater if a new nuclear station or so-called Small Modular Reactors were ever built here.

In 2019, conservation groups predicted that the gigantic twin cooling water intake tunnels at HPC would kill up to 250,000 fish a day. Eels, small fish and the fry of many species, such as salmon, whiting and cod, and microorganisms will be sucked into the cooling system through the 5mm mesh installed to prevent larger fish being swallowed up into this fish hell, to be discharged in heated water after hideous suffering. If this seems outrageous, things may be about to get worse.

To gain Planning Permission HPC’s developer, Electricité de France (EDF), was required to instal Acoustic Fish Deterrents (AFDs) in the intake pipes to give some warning to fish to keep away. EDF does not now want to instal these, most likely for financial reasons. Without AFDs, Stop Hinkley! argues that up to 500,000 fish a day will be sucked into the cooling water intakes. That suggests 11 billion fish and other marine life will be destroyed in the c.60 years life of the station.

Conditions may be different in the Bradwell B context but any nuclear development that requires cooling water from the estuary would severely affect marine life. Affected, too, would be the many wildfowl and migratory birds that depend on fish and other marine life for food in estuaries like the Severn and Blackwater, which support important and protected habitats.

In other sobering news, an ‘unheard of’ heatwave in our coastal waters has been reported. Before you jump into the sea, consider the impacts of warmer water on our marine life. If the heatwave continues through the summer, experts believe ‘we could see the mass mortality of kelp, seagrass, fish and oysters’ (Guardian, 20 June).

August 10, 2023 - Posted by Christina Macpherson | oceans, UK