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Modelling gas generation in radioactive waste repositories

Technical Report:

Abstract

In a repository containing low- and intermediate-level waste, gas generation will occur principally by the coupled processes of metal corrosion and microbial degradation of cellulosic waste. This Paper describes a mathematical model design to address gas generation by these mechanisms. The metal corrosion model incorporates a three-stage process encompassing both aerobic and anaerobic corrosion regimes; the microbial degradation model simulates the activities of eight different microbial populations, which are maintained as functions both of pH and of the concentrations of particular chemical species. Gas concentrations have been measured over a period of three years in large-scale drum experiments designed to simulate repository conditions. Model predictions are confirmed against the experimental measurements, and a prediction is then made of gas concentrations and generation rates over an assessment period of one million years in a radioactive waste repository. (author).
Authors:
Publication Date:
Feb 01, 1993
Product Type:
Technical Report
Report Number:
AEA-D and R-0891(ed.2)
Reference Number:
SCA: 052002; PA: AIX-26:011928; EDB-95:027542; SN: 95001324503
Resource Relation:
Other Information: PBD: Feb 1993
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; RADIOACTIVE WASTE DISPOSAL; BIODEGRADATION; CORROSION; GASEOUS WASTES; INTERMEDIATE-LEVEL RADIOACTIVE WASTES; LOW-LEVEL RADIOACTIVE WASTES; RADIOACTIVE WASTE FACILITIES; SIMULATION; 052002; WASTE DISPOSAL AND STORAGE
OSTI ID:
10112216
Research Organizations:
AEA Decommissioning and Radwaste, Harwell (United Kingdom)
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Other: ON: DE95613248; TRN: GB9302888011928
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
GBN
Size:
22 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Agg, P J. Modelling gas generation in radioactive waste repositories. United Kingdom: N. p., 1993. Web.
Agg, P J. Modelling gas generation in radioactive waste repositories. United Kingdom.
Agg, P J. 1993. "Modelling gas generation in radioactive waste repositories." United Kingdom.
@misc{etde_10112216,
title = {Modelling gas generation in radioactive waste repositories}
author = {Agg, P J}
abstractNote = {In a repository containing low- and intermediate-level waste, gas generation will occur principally by the coupled processes of metal corrosion and microbial degradation of cellulosic waste. This Paper describes a mathematical model design to address gas generation by these mechanisms. The metal corrosion model incorporates a three-stage process encompassing both aerobic and anaerobic corrosion regimes; the microbial degradation model simulates the activities of eight different microbial populations, which are maintained as functions both of pH and of the concentrations of particular chemical species. Gas concentrations have been measured over a period of three years in large-scale drum experiments designed to simulate repository conditions. Model predictions are confirmed against the experimental measurements, and a prediction is then made of gas concentrations and generation rates over an assessment period of one million years in a radioactive waste repository. (author).}
place = {United Kingdom}
year = {1993}
month = {Feb}
}