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
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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
Dec 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
January 2026
Nuclear Technology
December 2025
Fusion Science and Technology
November 2025
Latest News
DNFSB spots possible bottleneck in Hanford’s waste vitrification
Workers change out spent 27,000-pound TSCR filter columns and place them on a nearby storage pad during a planned outage in 2023. (Photo: DOE)
While the Department of Energy recently celebrated the beginning of hot commissioning of the Hanford Site’s Waste Treatment and Immobilization Plant (WTP), which has begun immobilizing the site’s radioactive tank waste in glass through vitrification, the Defense Nuclear Facilities Safety Board has reported a possible bottleneck in waste processing. According to the DNFSB, unless current systems run efficiently, the issue could result in the interruption of operations at the WTP’s Low-Activity Waste Facility, where waste vitrification takes place.
During operations, the LAW Facility will process an average of 5,300 gallons of tank waste per day, according to Bechtel, the contractor leading design, construction, and commissioning of the WTP. That waste is piped to the facility after being treated by Hanford’s Tanks Side Cesium Removal (TSCR) system, which filters undissolved solid material and removes cesium from liquid waste.
According to a November 7 activity report by the DNFSB, the TSCR system may not be able to produce waste feed fast enough to keep up with the LAW Facility’s vitrification rate.
Technical Session|Methods
Tuesday, April 23, 2024|10:15AM–12:00PM PDT|Continental Ballroom 2
Session Chair:
Joshua Hykes (Studsvik Scandpower)
Alternate Chair:
Sooyoung Choi (Univ. Michigan)
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
Comparison of Two Infinite Homogeneous Medium Ultra Fine Group Neutron Slowing-Down Solvers in APOLLO3®
10:15–10:35AM PDT
Terry Levy (CEA), Li Mao (CEA), Richard Sanchez (CEA), Emeline Rosier (CEA), Igor Zmijarevic (CEA), Stéphane Mengelle (CEA), Cédric Jouanne (CEA), Odile Petit (CEA)
Paper
A Collision Probability Formulation of the Resonance Spectrum Expansion (RSE) Self-Shielding Method
10:35–10:55AM PDT
Alain Hebert (Institut de Genie Nucleaire)
A Generalized Differential Equation and Numerical Method for the Standard and Deformed Doppler Broadening Functions
10:55–11:15AM PDT
Willian Vieira de Abreu (Federal Univ. Rio de Janeiro), Adilson Costa da Silva (Federal Univ. Rio de Janeiro), Alessandro da Cruz Gonçalves (Federal Univ. Rio de Janeiro), Aquilino Senra Martinez (Federal Univ. Rio de Janeiro)
Resonance Treatment of Double-Heterogeneous Fuel Using a Deterministic Statistical Geometry Method in Heterogeneous Transport Calculation Code GALAXY-Z
11:15–11:35AM PDT
Kazuya Yamaji (Mitsubishi Heavy Industries), Hiroki Koike (Mitsubishi Heavy Industries), Koji Asano (Mitsubishi Heavy Industries), Satoshi Takeda (Osaka Univ.), Akio Yamamoto (Nagoya Univ.)
Simplified Treatment of Coating Layers in TRISO Fuel in Statistical Geometry Method in Monte Carlo Calculation
11:35–11:55AM PDT
Akio Yamamoto (Nagoya Univ.), Tomohiro Endo (Nagoya Univ.), Satoshi Takeda (Osaka Univ.), Kazuya Yamaji (Mitsubishi Heavy Industries), Hiroki Koike (Mitsubishi Heavy Industries), Koji Asano (Mitsubishi Heavy Industries)
To join the conversation, you must be logged in and registered for the meeting.
