In Idaho Falls, Dave Hendricks dedicated 35 years of his life to the Idaho National Laboratory (INL). For Hendricks, this was more than just a job; it was a journey into the heart of nuclear and space technologies that many don’t realize INL impacted.
Now retired, Hendricks reflects on a career that powered spacecraft and advanced nuclear research. A Navy veteran with a background in nuclear systems, he began his journey at Argonne National Laboratory–West from 1991 to 1995. There, he worked on the Experimental Breeder Reactor-II (EBR-II), a groundbreaking nuclear reactor exploring advanced fuel concepts.
Hendricks recalls, “I chose Argonne for its cutting-edge projects. The atmosphere was immediately welcoming, almost family-like.”
Settling down in eastern Idaho, he married his wife, Tammy, and they raised two kids. His work continued at INL’s Hot Fuel Examination Facility and the Fuel Conditioning Facility, where scientists use remote-controlled equipment to study spent nuclear fuel.
A significant turning point came after the September 11 attacks in 2001. INL was reevaluated for security, leading to new projects, including the relocation of space-power work from Mound Laboratory in Ohio. This resulted in the construction of facilities for radioisotope thermoelectric generators (RTGs), which power spacecraft where solar energy isn’t viable. Hendricks contributed to the first RTG for NASA’s New Horizons spacecraft, launched in 2006 and known for its historic flyby of Pluto in 2015.
“INL was crucial in designing the nuclear power system that keeps New Horizons functional, far from the sun,” Hendricks explained.
His expertise also supported multiple NASA programs, including the Mars rovers Curiosity and Perseverance. These rovers rely on nuclear power due to Mars’ frequent dust storms and harsh temperatures. Hendricks helped ensure their energy systems could withstand the challenges of the Martian environment.
In his later years at INL, Hendricks returned to nuclear fuel research, focusing on Post-Irradiation Examination (PIE). This process is vital for assessing how fuel performs in reactors, helping to improve safety and efficiency in future designs.
Looking back, Hendricks feels a deep sense of pride. “I believe in nuclear energy. It’s crucial for our future energy needs,” he said. “It’s essential that the public understands what we do at INL. The average person often doesn’t realize how significant this work is.”
As he steps into retirement, Hendricks plans to travel with Tammy, explore places like the Oregon coast, and enjoy hobbies such as hunting and fishing. He’s grateful for a career that allowed him to contribute to innovations that have stretched far beyond Idaho, helping shape the future of energy and exploration.
Data suggests that nuclear energy can significantly reduce global warming emissions. According to the World Nuclear Association, nuclear energy has helped avoid over 60 billion tonnes of CO2 emissions since 1971, demonstrating its role in combating climate change. As discussions about sustainable energy continue, Hendricks’ story emphasizes the importance of nuclear technology in the modern energy landscape.
For more about INL and its groundbreaking projects, visit Idaho National Laboratory.

