Preliminary PCT data on glass formulations developed for Hanford Site low-level wastes
Tank wastes stored at the Hanford Site are to be separated into high-level and low-level waste (LLW) fractions and vitrified for disposal. The high content of Na{sub 2}O in the LLW, averaging about 80 wt% on an oxide basis, necessitates the development of durable high-sodium glasses. Pacific Northwest Laboratory (PNL) is providing glass formulations for the LLW vitrification program. The most important considerations for acceptable LLW waste glass compositions are the following: (1) the capability to incorporate high sodium content from LLW; (2) satisfactory long-term durability; and (3) proper processability, such as desired viscosity at melting temperature. To develop durable high-sodium glasses in a reasonably short time and to supply data needed for modeling the glass`s long-term performance, several short-term test methods, such as 7-day PCT (Product Consistency Test), 28-day Materials Characterization Center MCC-1 test, single-pass flow through test, and vapor-hydration test have been used. A long-term static test (up to one year using PCT) is also being performed for selected glasses. This data report includes only the PCT data available at the time of the publication.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 555377
- Report Number(s):
- PNL--10827; ON: DE98050972; BR: 20193EW31
- Country of Publication:
- United States
- Language:
- English
Similar Records
Glass durability evaluation using multiple test methods
Vendor glass durability study during evaluation of melter system technologies for vitrification of Hanford low-level wastes
Nuclear waste glass product consistency test (PCT), Version 5. 0
Book
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:225398
Vendor glass durability study during evaluation of melter system technologies for vitrification of Hanford low-level wastes
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:210163
Nuclear waste glass product consistency test (PCT), Version 5. 0
Technical Report
·
Mon Jun 01 00:00:00 EDT 1992
·
OSTI ID:5154148