Safety

Safety, health and security are our top priorities and central to everything we do. We’re passionate about the safety and well-being of our employees, our environment, our stakeholders and the public in general.

Nuclear regulation
Strict processes ensure that UK nuclear installations have an excellent safety record.

The industry is closely regulated by the Office for Nuclear Regulation (ONR) which makes sure that all nuclear plants are built and operated to the highest safety standards.  The Environment Agency, Natural Resources Wales and Scottish Environment Protection Agency ensure radioactive waste and other environmental impacts are correctly managed.
 
UK nuclear installations are built with extensive safety measures in place to ensure that they can safely withstand extreme conditions, including fire and earthquakes.
 
Safety
The design of Advanced Boiling Water Reactors (ABWRs) is fully compliant with well-established, international criteria on safety. ABWR safety features are based on the Defence in Depth (DiD) concept in which multiple levels of protection are provided at each layer of the build with no reliance on other layers.
 
As part of a strict planning and licensing process, we’re required to carry out an extensive assessment on a range of potential natural events, including events with a probability of up to 1 in 10,000 years. This involves taking into account the possible effects of natural disasters such as tsunamis or storm surges, as well as the possible implications of climate change. 
 
Hitachi’s ABWR technology is fully compliant with the international criteria for ensuring that there is a low probability of accidental damage to the reactor core. In response to the Fukushima Dai'ichi accident caused by the huge earthquake and subsequent tsunamis on 11 March 2011, a further layer of Defence in Depth (DiD) protection has been added to all existing power plants for enhanced safety.
 
Find out more about Hitachi’s ABWR construction and delivery record.
 
Managing Radiation
We’re all exposed to tiny doses of radiation every day. Most of it comes from natural sources, including radon gas from the ground, cosmic rays from outer space and radiation from rocks and soil.
 
These natural sources account for about 85% of the average dose of radiation, with artificial sources accounting for about 15%. Almost all artificial background radiation comes from medical procedures such as X-rays, while nuclear power stations account for less than 0.1% of the amount we receive annually.
 
The maximum potential impact of radiation to any member of the public from a nuclear power station is about the same as they would receive from taking a single return flight to New York each year. This level represents no significant health risk to people living near nuclear power stations or to employees.
 
Our pledge 
We’re committed to managing power generation safely at all of our sites. As such, we will work closely with the relevant authorities to ensure the safe radiological operation of our plant throughout its life and during the later decommissioning process.
 
For more on health and safety within the UK nuclear industry, visit the Office for Nuclear Regulation.
 
Safety, health and security are our top priorities and central to everything we do.
 
 
UK nuclear installations are built with extensive safety measures in place to ensure that they can safely withstand extreme conditions, including fire and earthquakes.