#United States #Parsons #Gravity Reactor #Deep Fission #Day Zimmermann

Day & Zimmermann and Deep Fission Team Up for Revolutionary Underground Nuclear Reactor

In a groundbreaking announcement made on June 2, 2026, Day & Zimmermann (D&Z) has officially partnered with Deep Fission, Inc. to develop an innovative underground nuclear reactor referred to as the Gravity Nuclear Reactor. This cutting-edge project aims to reshape the nuclear energy sector by leveraging unique technology and advanced construction practices.

Deep Fission is recognized as an advanced nuclear energy firm focused on creating small modular pressurized water reactors that are designed to be situated one mile beneath the Earth's surface. The collaboration aims to ensure a sustainable energy future by tapping into the advantages of deep-borehole reactor technology, which stands to provide not only cleaner energy but also safety and reliability for power generation.

D&Z is no stranger to the nuclear industry; it has established a reputation as a leading engineering, procurement, and construction (EPC) company known for its extensive experience over the past 40 years. The company will spearhead various aspects of the project, from pre-construction planning to the execution of above-ground infrastructure.

In a statement, Ross McConnell, D&Z's Chief Nuclear Officer, emphasized the significance of this partnership: "Deep Fission's advanced reactor technology, combined with Day & Zimmermann's quality program and nuclear expertise, will bring first-of-a-kind nuclear construction to reality. We look forward to advancing this innovative project together."

Project Overview

The construction will take place at the Great Plains Industrial Park in Parsons, Kansas, which is part of the U.S. Department of Energy's Reactor Pilot Program -- a prestigious initiative that has selected only ten companies to participate. Notably, D&Z's extensive qualifications in nuclear-code work and its experience in natural gas plant construction make it a key player in this ambitious endeavor.

Mike Brasel, Deep Fission's Chief Operating Officer, echoed the sentiment regarding the potential of their collaboration: "Partnering with Day & Zimmermann will bring proven nuclear construction expertise and execution discipline to Deep Fission's deployment. Their track record supports our aim to deliver a new model for low-carbon, reliable power that is simpler to build, inherently safe, and scalable to meet growing energy demand."

The Gravity Nuclear Reactor will integrate established pressurized water reactor technology with a novel approach to its physical placement. Each reactor unit is set to utilize the subsurface environment, where hydrostatic pressure plays a crucial role in maintaining operational parameters. This design strategy minimizes the need for extensive above-ground infrastructure, thus enhancing safety, structural integrity, and environmental sustainability.

Key Benefits of the Partnership

1. Technological Innovation: The reactor is designed to harness existing reactor technology while capitalizing on advanced deep-borehole placement.
2. Safety Assurance: Utilizing geological formations for containment adds an additional layer of safety, mitigating risks associated with traditional above-ground reactors.
3. Sustainability: By placing reactors underground, the project promises minimal environmental impact, aligning with global initiatives for low-carbon energy sources.
4. Proven Expertise: Combining D&Z’s established safety protocols and operational discipline with Deep Fission’s cutting-edge technology enhances project viability and success.

The Road Ahead

As the project progresses, both Day & Zimmermann and Deep Fission are committed to upholding the highest standards in safety, quality, and regulatory compliance. The collaboration represents not just a significant milestone for both companies but also a strategic advancement in the field of nuclear energy that could pave the way for future innovations.

Deep Fission's vision of revolutionizing the energy landscape positions it as a forward-thinking leader, striving to meet the demands of a rapidly evolving energy market. With this partnership, the future of underground nuclear reactors looks promising, reflecting a substantial commitment to provide efficient, reliable, and safe nuclear power solutions.

For further updates on this pioneering project, please visit Deep Fission's website.