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Title: The grout/glass performance assessment code system (GPACS) with verification and benchmarking

Technical Report ·
DOI:https://doi.org/10.2172/10120797· OSTI ID:10120797

GPACS is a computer code system for calculating water flow (unsaturated or saturated), solute transport, and human doses due to the slow release of contaminants from a waste form (in particular grout or glass) through an engineered system and through a vadose zone to an aquifer, well and river. This dual-purpose document is intended to serve as a user`s guide and verification/benchmark document for the Grout/Glass Performance Assessment Code system (GPACS). GPACS can be used for low-level-waste (LLW) Glass Performance Assessment and many other applications including other low-level-waste performance assessments and risk assessments. Based on all the cses presented, GPACS is adequate (verified) for calculating water flow and contaminant transport in unsaturated-zone sediments and for calculating human doses via the groundwater pathway.

Research Organization:
Westinghouse Hanford Co., Richland, WA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC06-87RL10930
OSTI ID:
10120797
Report Number(s):
WHC-SD-WM-UM-019; ON: DE95006889; TRN: 95:002275
Resource Relation:
Other Information: PBD: Dec 1994
Country of Publication:
United States
Language:
English