Sellafield Returns to Lower Tier Control of Major Accident Hazards Status
Sellafield Limited has successfully downgraded its status to Lower Tier Control of Major Accident Hazards (COMAH), enhancing safety measures and reducing potential hazards on site. This change is a direct result of proactive measures to manage chemical risks, ultimately safeguarding the local community and environment.
New Safety Measures Introduced
The recent cessation of THORP and Magnox reprocessing operations allowed Sellafield to streamline its chemical inventory. This rationalisation has resulted in the site needing fewer bulk chemicals and significantly lowering its nitric acid stocks.
Understanding COMAH Regulations
The Control of Major Accident Hazards (COMAH) Regulations, established in 2015, focus on preventing accidents that could involve dangerous substances and mitigating their possible impacts. For Sellafield, maintaining a reduced level of hazardous materials is considered one of the most effective strategies to achieve safety.
In 2017, Sellafield had its classification changed to an Upper Tier COMAH site due to the revised hazard categorisation of nitric acid. Although operational activities remained unchanged, these regulatory updates necessitated stricter controls, including:
- The development and upkeep of an extensive safety report.
- The establishment of an off-site emergency response plan for chemical incidents.
- Increased scrutiny from regulatory bodies.
Hazard Reduction Initiatives
In recent years, Sellafield has actively worked to minimize chemical hazards, leading to a considerable decrease in the levels of dangerous substances held on site. Key actions taken include:
- Cutting down the amount of nitric acid used in operations from over 1,280 tonnes to below 200 tonnes.
- Eliminating substantial quantities of other hazardous materials, such as sodium nitrite, odourless kerosene, hydroxylamine, and liquid oxygen.
Pam Duerden, the director overseeing safety, health, environment, and quality (SHEQ), remarked that reducing hazards at their source has proven to be highly effective in risk management.
Impact of the Downgrade
The confirmation of Sellafield’s return to Lower Tier status implies that the site is no longer obligated to develop an off-site emergency plan for chemical incidents, as the likelihood of off-site events has significantly decreased due to reduced chemical inventories. Furthermore, this status change allows for financial savings, enabling the reallocation of resources towards other high-priority safety initiatives.
Ongoing Commitments to Safety
Despite the recent changes, Sellafield continues to monitor its chemical holdings carefully. The company remains committed to ensuring that all remaining chemicals necessary for operations are managed appropriately. This ongoing review process not only supports safer operations now but also contributes to a reduced risk profile for the future.
Source: official statements, news agencies, and public reports.
https://www.gov.uk/government/news/lowering-chemical-hazards-across-sellafield
