FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W12894986> ?p ?o ?g. }

• W12894986 abstract "To support the selection of a waste form for the liquid secondary wastes from WTP, Washington River Protection Solutions has initiated secondary-waste-form testing work at Pacific Northwest National Laboratory (PNNL). In anticipation of a down-selection process for a waste form for the Solidification Treatment Unit to be added to the ETF, PNNL is conducting tests on four candidate waste forms to evaluate their ability to meet potential waste acceptance criteria for immobilized secondary wastes that would be placed in the IDF. All three waste forms demonstrated compressive strengths above the minimum 3.45 MPa (500 psi) set as a target for cement-based waste forms. Further, none of the waste forms showed any significant degradation in compressive strength after undergoing thermal cycling (30 cycles in a 10 day period) between -40 C and 60 C or water immersion for 90 days. The three leach test methods are intended to measure the diffusion rates of contaminants from the waste forms. Results are reported in terms of diffusion coefficients and a leachability index (LI) calculated based on the diffusion coefficients. A smaller diffusion coefficient and a larger LI are desired. The NRC, in its Waste Form Technical Position (NRC 1991), provides recommendations and guidance regarding methods to demonstrate waste stability for land disposal of radioactive waste. Included is a recommendation to conduct leach tests using the ANS 16.1 method. The resulting leachability index (LI) should be greater than 6.0. For Hanford secondary wastes, the LI > 6.0 criterion applies to sodium leached from the waste form. For technetium and iodine, higher targets of LI > 9 for Tc and LI > 11 for iodine have been set based on early waste-disposal risk and performance assessment analyses. The results of these three leach tests conducted for a total time between 11days (ASTM C1308) to 90 days (ANS 16.1) showed: (1) Technetium diffusivity: ANSI/ANS 16.1, ASTM C1308, and EPA 1315 tests indicated that all the waste forms had leachability indices better than the target LI > 9 for technetium; (2) Rhenium diffusivity: Cast Stone 2M specimens, when tested using EPA 1315 protocol, had leachability indices better than the target LI > 9 for technetium based on rhenium as a surrogate for technetium. All other waste forms tested by ANSI/ANS 16.1, ASTM C1308, and EPA 1315 test methods had leachability indices that were below the target LI > 9 for Tc based on rhenium release. These studies indicated that use of Re(VII) as a surrogate for 99Tc(VII) in low temperature secondary waste forms containing reductants will provide overestimated diffusivity values for 99Tc. Therefore, it is not appropriate to use Re as a surrogate 99Tc in future low temperature waste form studies. (3) Iodine diffusivity: ANSI/ANS 16.1, ASTM C1308, and EPA 1315 tests indicated that the three waste forms had leachability indices that were below the target LI > 11 for iodine. Therefore, it may be necessary to use a more effective sequestering material than silver zeolite used in two of the waste forms (Ceramicrete and DuraLith); (4) Sodium diffusivity: All the waste form specimens tested by the three leach methods (ANSI/ANS 16.1, ASTM C1308, and EPA 1315) exceeded the target LI value of 6; (5) All three leach methods (ANS 16.1, ASTM C1308 and EPA 1315) provided similar 99Tc diffusivity values for both short-time transient diffusivity effects as well as long-term ({approx}90 days) steady diffusivity from each of the three tested waste forms (Cast Stone 2M, Ceramicrete and DuraLith). Therefore, any one of the three methods can be used to determine the contaminant diffusivities from a selected waste form." @default.
• W12894986 created "2016-06-24" @default.
• W12894986 creator A5048584400 @default.
• W12894986 creator A5057649527 @default.
• W12894986 creator A5060380245 @default.
• W12894986 creator A5072994716 @default.
• W12894986 creator A5089488536 @default.
• W12894986 date "2011-08-12" @default.
• W12894986 modified "2023-10-14" @default.
• W12894986 title "Waste Acceptance Testing of Secondary Waste Forms: Cast Stone, Ceramicrete and DuraLith" @default.
• W12894986 cites W1489459737 @default.
• W12894986 cites W1490542677 @default.
• W12894986 cites W1491326614 @default.
• W12894986 cites W1542143806 @default.
• W12894986 cites W1555584021 @default.
• W12894986 cites W1564389992 @default.
• W12894986 cites W1577627358 @default.
• W12894986 cites W1583793494 @default.
• W12894986 cites W1599521610 @default.
• W12894986 cites W2005782244 @default.
• W12894986 cites W2016704774 @default.
• W12894986 cites W2044681438 @default.
• W12894986 cites W2052734120 @default.
• W12894986 cites W2061230075 @default.
• W12894986 cites W2088173222 @default.
• W12894986 cites W2093330678 @default.
• W12894986 cites W2151264146 @default.
• W12894986 cites W334197873 @default.
• W12894986 cites W110373621 @default.
• W12894986 doi "https://doi.org/10.2172/1027185" @default.
• W12894986 hasPublicationYear "2011" @default.
• W12894986 type Work @default.
• W12894986 sameAs 12894986 @default.
• W12894986 citedByCount "18" @default.
• W12894986 countsByYear W128949862013 @default.
• W12894986 countsByYear W128949862014 @default.
• W12894986 countsByYear W128949862015 @default.
• W12894986 countsByYear W128949862016 @default.
• W12894986 countsByYear W128949862017 @default.
• W12894986 countsByYear W128949862020 @default.
• W12894986 countsByYear W128949862021 @default.
• W12894986 countsByYear W128949862022 @default.
• W12894986 countsByYear W128949862023 @default.
• W12894986 crossrefType "report" @default.
• W12894986 hasAuthorship W12894986A5048584400 @default.
• W12894986 hasAuthorship W12894986A5057649527 @default.
• W12894986 hasAuthorship W12894986A5060380245 @default.
• W12894986 hasAuthorship W12894986A5072994716 @default.
• W12894986 hasAuthorship W12894986A5089488536 @default.
• W12894986 hasBestOaLocation W128949863 @default.
• W12894986 hasConcept C127413603 @default.
• W12894986 hasConcept C2779958842 @default.
• W12894986 hasConcept C39432304 @default.
• W12894986 hasConcept C548081761 @default.
• W12894986 hasConcept C89690796 @default.
• W12894986 hasConceptScore W12894986C127413603 @default.
• W12894986 hasConceptScore W12894986C2779958842 @default.
• W12894986 hasConceptScore W12894986C39432304 @default.
• W12894986 hasConceptScore W12894986C548081761 @default.
• W12894986 hasConceptScore W12894986C89690796 @default.
• W12894986 hasLocation W128949861 @default.
• W12894986 hasLocation W128949862 @default.
• W12894986 hasLocation W128949863 @default.
• W12894986 hasOpenAccess W12894986 @default.
• W12894986 hasPrimaryLocation W128949861 @default.
• W12894986 hasRelatedWork W1540614697 @default.
• W12894986 hasRelatedWork W168684845 @default.
• W12894986 hasRelatedWork W18531110 @default.
• W12894986 hasRelatedWork W2183238082 @default.
• W12894986 hasRelatedWork W2228188613 @default.
• W12894986 hasRelatedWork W2341472504 @default.
• W12894986 hasRelatedWork W2743411728 @default.
• W12894986 hasRelatedWork W2759187820 @default.
• W12894986 hasRelatedWork W3712238 @default.
• W12894986 hasRelatedWork W4243094264 @default.
• W12894986 isParatext "false" @default.
• W12894986 isRetracted "false" @default.
• W12894986 magId "12894986" @default.
• W12894986 workType "report" @default.