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2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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GAO: Grouting Hanford tank waste could cost more than $1.1B
Workers move a container of treated tank waste as part of Hanford’s Test Bed Initiative to grout around 2,000 gallons of LAW for off-site disposal. (Photo: DOE)
Grouting Hanford’s low-level radioactive liquid tank waste could cost between $480 million and $1.1 billion, according to a report by the Government Accountability Office, which has repeatedly found that grouting (immobilizing waste in a concrete-like mixture) can accelerate cleanup at the Hanford Site and save billions of dollars when compared to mixing the waste with molten glass through the vitrification process.
Technical Session|Panel|Sponsored by NISD
Monday, June 14, 2021|3:15–5:00PM EDT
Session Chair:
David S. Grabaskas
Alternate Chair:
Matthew R. Denman
Session Organizer:
Andrew J. Clark
Staff Producer:
Julie Bry (ANS)
The ANSI/ASME/ANS "Probabilistic Risk Assessment Standard for Advanced Non-Light Water Reactor Nuclear Power Plants" was approved and published January 28, 2021. The development of the Non-LWR PRA Standard encountered many technical issues that the working group overcame, such as: database development for the 1,500+ requirements; combining PRA elements from multiple PRA standards into one comprehensive PRA standard; formation of absolute importance measures and screening criteria; and appropriate language to allow PRA applications over the entire design/operation life cycle. This panel will discuss these technical issues and the lessons learned from the development of the Non-LWR PRA Standard.
Karl Fleming
KMF
Matthew Denman
Kairos Power LLC
Hanh Phan
U.S. Nuclear Regulatory Commission
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