Screening Level Risk Assessment for the New Waste Calcining Facility
This screening level risk assessment evaluates potential adverse human health and ecological impacts resulting from continued operations of the calciner at the New Waste Calcining Facility (NWCF) at the Idaho Nuclear Technology and Engineering Center (INTEC), Idaho National Engineering and Environmental Laboratory (INEEL). The assessment was conducted in accordance with the Environmental Protection Agency (EPA) report, Guidance for Performing Screening Level Risk Analyses at Combustion Facilities Burning Hazardous Waste. This screening guidance is intended to give a conservative estimate of the potential risks to determine whether a more refined assessment is warranted. The NWCF uses a fluidized-bed combustor to solidify (calcine) liquid radioactive mixed waste from the INTEC Tank Farm facility. Calciner off volatilized metal species, trace organic compounds, and low-levels of radionuclides. Conservative stack emission rates were calculated based on maximum waste solution feed samples, conservative assumptions for off gas partitioning of metals and organics, stack gas sampling for mercury, and conservative measurements of contaminant removal (decontamination factors) in the off gas treatment system. Stack emissions were modeled using the ISC3 air dispersion model to predict maximum particulate and vapor air concentrations and ground deposition rates. Results demonstrate that NWCF emissions calculated from best-available process knowledge would result in maximum onsite and offsite health and ecological impacts that are less then EPA-established criteria for operation of a combustion facility.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM) (US)
- DOE Contract Number:
- AC07-94ID13223
- OSTI ID:
- 6688
- Report Number(s):
- INEEL/EXT-97-00686; TRN: AH200116%%367
- Resource Relation:
- Other Information: PBD: 1 May 1999
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
60 APPLIED LIFE SCIENCES
FLUIDIZED-BED COMBUSTORS
LIQUID WASTES
ORGANIC COMPOUNDS
RADIOISOTOPES
RISK ASSESSMENT
STORAGE FACILITIES
US EPA
WASTES
SCREENING LEVEL RISK ASSESSMENT
HEALTH AND ECOLOGICAL IMPACTS
INEEL
ENVIRONMENTAL PROTECTION AGENCY
FLUIDIZED-BED COMBUSTOR
CALCINE
LIQUID RADIOACTIVE MIXED WASTE
OFF GAS
NOX
VOLATILIZED METAL SPECIES
RADIONUCLIDES
STACK EMISSION RATES
ISC3 AIR DISPERSION MODEL
PARTICULATE AND VAPOR AIR CONCENTRATIONS