ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Sep 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
October 2025
Latest News
Shifting the paradigm of supply chain
Chad Wolf
When I began my nuclear career, I was coached up in the nuclear energy culture of the day to “run silent, run deep,” a mindset rooted in the U.S. Navy’s submarine philosophy. That was the norm—until Fukushima.
The nuclear renaissance that many had envisioned hit a wall. The focus shifted from expansion to survival. Many utility communications efforts pivoted from silence to broadcast, showcasing nuclear energy’s elegance and reliability. Nevertheless, despite being clean baseload 24/7 power that delivered a 90 percent capacity factor or higher, nuclear energy was painted as risky and expensive (alongside energy policies and incentives that favored renewables).
Economics became a driving force threatening to shutter nuclear power. The Delivering the Nuclear Promise initiative launched in 2015 challenged the industry to sustain high performance yet cut costs by up to 30 percent.
R. J. Sheu, J. Liu, J. P. Wang, K. K. Lin, G. H. Luo
Nuclear Technology | Volume 168 | Number 2 | November 2009 | Pages 417-423
Shielding | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 2) / Radiation Protection | doi.org/10.13182/NT09-A9219
Articles are hosted by Taylor and Francis Online.
This study investigates the characteristics of the prompt radiation field due to the operation of the proposed Taiwan Photon Source (TPS). Two extreme beam loss cases are considered to bound the possible beam loss scenarios in the tunnel; i.e., all electrons are lost at one point, or they are lost uniformly along the whole electron orbit. Energy spectra and dose distributions of the prompt radiation field for the shielding design of the TPS are studied using analytic estimations and Monte Carlo simulations. The radiation levels of photons and neutrons outside the shielding wall are estimated for various operation modes and beam loss scenarios. The calculated results show that the preliminary shielding design of the TPS is highly practicable to achieve its annual design dose limit of 1 mSv for personnel. Meanwhile, the radiation impact on the environment is also far below the regulatory requirement.
