A computer program to facilitate performance assessment of underground low-level waste concrete vaults

Conference · Thu Aug 01 00:00:00 EDT 1996

OSTI ID:264455

Snyder, K A; Clifton, J R ^[1]; Pommersheim, J ^[2]

---

1. National Inst. of Standards and Technology, Gaithersburg, MD (United States)
2. Bucknell Univ., Lewisberg, PA (United States)

A computer program (4SIGHT) to facilitate performance assessment of underground concrete vaults for low level waste (LLW) disposal facilities is being developed at the National Institute of Standards and Technology (NIST). Specifically, the program predicts the hydraulic conductivity and the service life of an underground concrete vault. The hydraulic conductivity estimate is based upon empirical relations. The service life is estimated from consideration of three major degradation processes: steel reinforcement corrosion, sulfate attack, and leaching. The performance prediction is based upon ion transport equations for both diffusion and advection. Most importantly, the computer program incorporates the synergistic degradation effects of all three processes, and their effect upon the transport coefficients.

• OSTI ID: 264455
• Report Number(s): CONF-951155-; ISBN 1-55899-315-0; TRN: 96:016600
• Resource Relation: Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 27 Nov - 1 Dec 1995; Other Information: PBD: 1996; Related Information: Is Part Of Scientific basis for nuclear waste management 19; Murphy, W.M. [ed.] [Southwest Research Inst., San Antonio, TX (United States)]; Knecht, D.A. [ed.] [Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)]; PB: 957 p.; Materials Research Society symposium proceedings, Volume 412
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
36 MATERIALS SCIENCE
RADIOACTIVE WASTE FACILITIES
SERVICE LIFE
COMPUTERIZED SIMULATION
REINFORCED CONCRETE
HYDRAULIC CONDUCTIVITY
CORROSION
LOW-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE DISPOSAL
UNDERGROUND DISPOSAL
NUMBER CODES
STEELS
SULFATES
CORROSIVE EFFECTS
GROUND WATER
FLOW MODELS
CRACKS