In the ongoing process of decommissioning the BER II research reactor located in Berlin-Wannsee, a total of 155 objections were formally submitted by the public within the designated deadline. These objections were part of a public participation process that involved citizens from six federal states, who collectively raised concerns across approximately 40 distinct topics. This marks a significant milestone in the complex procedure of dismantling the reactor, as confirmed by the Senate Department for Urban Mobility, Transport, Climate Action and the Environment.
Public Engagement and Objections
The interpretation phase, crucial for public input, allowed interested parties to review the application documents submitted by the Helmholtz Center Berlin for Materials and Energy (HZB) and to formally lodge their objections. This period extended from November 18, 2025, to January 28, 2026. During this time, over 500 individuals accessed the documents, primarily through an online portal, with approximately 200 of these visits originating from the Berlin area.
A notable aspect of the public response was the geographical distribution of the objections. The majority of submissions came from North Rhine-Westphalia, indicating a broad regional interest in the reactor’s decommissioning. Approximately one-third of the objections were filed by residents of Berlin and Brandenburg. In addition to individual citizens, two nature conservation associations and two other civil society organizations also submitted detailed comments, underscoring the diverse range of stakeholders involved.
The BER II Research Reactor: A Background
The BER II research reactor, operated by the Helmholtz Center Berlin for Materials and Energy (HZB), played a vital role in scientific research by exclusively supplying neutrons. It is important to note that the reactor’s operation did not involve nuclear fission for energy generation. Operations at BER II were officially discontinued in 2019, initiating the current approval process for its decommissioning and subsequent dismantling. The public participation phase is a mandatory component of this regulatory process, ensuring transparency and addressing potential public concerns.
Next Steps in the Decommissioning Process
Following the conclusion of the objection period, all submissions that were received in a timely and proper form will now undergo a thorough evaluation by the nuclear regulatory authority. This evaluation phase is critical for assessing the validity and implications of each objection. Subsequently, a discussion will be held, providing an opportunity for the objectors to elaborate on their concerns and for the authorities to respond. This dialogue aims to clarify any misunderstandings and to ensure that all viewpoints are considered.
Upon completion of these discussions, the authority will compile a comprehensive summary and assessment of the environmental impact associated with the decommissioning and dismantling project. This assessment will form a crucial basis for the final decision-making process. The Senate Environment Administration has indicated that it is not yet possible to provide an estimated timeline for when the authority will render a final decision on the current application, highlighting the complexity and meticulous nature of the regulatory review.
The decommissioning of the BER II research reactor represents a significant environmental and logistical undertaking. The public’s active participation, evidenced by the substantial number of objections, underscores the importance of transparent processes and thorough consideration of all potential impacts. The regulatory authority’s diligent evaluation of these objections will be key to ensuring a safe and environmentally responsible dismantling of the facility.
