4SIGHT Manual: A Computer Program for Modelling Degradation of Underground Low Level Waste Concrete Vaults

Published

June 1, 1995

Author(s)

Kenneth A. Snyder, J R. Clifton

Abstract

A computer program has been written to facilitate performance assessment of concrete vaults used in Low Level Waste (LLW) disposal faciliites. The computer program is a numerical computer model of degradation in concrete. A one-dimensional finite difference equation is used to propagate ions by precipitation/dissolution of available salts. The precipitation/dissolution of salts, in turn, changes the transport properties, which changes the rate of ion transport. The result is a model which incorporates the synergism of multiple degradation mechanisms. This Report is self-contained. It includes the installation instructions, user manual, technical details, and source code. The program was written using a literate programming tool and the "pretty-printing" output of the source code is attached at the end of this report

Citation

NIST Interagency/Internal Report (NISTIR) - 5612

Report Number

5612

NIST Pub Series

NIST Interagency/Internal Report (NISTIR)

Pub Type

NIST Pubs

Download Paper

Local Download

Keywords

building technology, computer models, concretes, corrosion, corrosion of reinforcement, degradation, leaching, radioactive wastes, service life, sulfate attack

Citation

Snyder, K. and Clifton, J. (1995), 4SIGHT Manual: A Computer Program for Modelling Degradation of Underground Low Level Waste Concrete Vaults, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916573 (Accessed October 6, 2025)