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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Hanford begins removing waste from 24th single-shell tank
The Department of Energy’s Office of Environmental Management said crews at the Hanford Site near Richland, Wash., have started retrieving radioactive waste from Tank A-106, a 1-million-gallon underground storage tank built in the 1950s.
Tank A-106 will be the 24th single-shell tank that crews have cleaned out at Hanford, which is home to 177 underground waste storage tanks: 149 single-shell tanks and 28 double-shell tanks. Ranging from 55,000 gallons to more than 1 million gallons in capacity, the tanks hold around 56 million gallons of chemical and radioactive waste resulting from plutonium production at the site.
Technical Session|Panel|Sponsored by NISD
Wednesday, November 18, 2020|2:40–4:20PM EST
Session Chair:
N. Prasad Kadambi
Alternate Chair:
Robert W. Youngblood
Session Organizer:
Andrew J. Clark
Staff Producer:
Julie Bry (American Nuclear Society)
RIPB ideas are widely accepted in principle, but have so far realized only part of their full potential. In the operating fleet, licensing processes were originally developed based on Design Basis Accident considerations; RIPB ideas have been applied only perturbatively, generally in order to justify license modifications or enforcement decisions. Model-Based Systems Engineering (MBSE) is finding increased use as a way to consider nuclear reactor design, construction, operation, maintenance, and decommissioning in a continuum of processes rather than compartmentalized activities. This should enable better use of RIPB methods for more useful consensus standards. The ANS has been making progress within the Standards Committee to improve standards development using some aspects of this approach. The panel discussion will consider application of RIPB approaches in other domains, its nexus with Model-Based Systems Engineering, and how best to reflect RIPB principles in consensus standards.
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