By Michael Joyce
ISBN-10: 092960072X
ISBN-13: 9780929600727
ISBN-10: 1429498935
ISBN-13: 9781429498937
Read or Download Risk-Based Classification of Radioactive and Hazardous Chemical Wastes (Ncrp Report, No. 139) PDF
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Extra info for Risk-Based Classification of Radioactive and Hazardous Chemical Wastes (Ncrp Report, No. 139)
Sample text
Disposal in a municipal/ industrial landfill). 1, disposal is the only disposition of exempt materials considered in this Report. Limits on concentrations of hazardous substances in exempt waste would be derived based on an assumption that the risk or dose to a hypothetical inadvertent intruder at a disposal site should not exceed negligible levels. The use of a negligible risk or dose to determine exempt waste is based on an assumption that a disposal facility for nonhazardous waste could be released for unrestricted use by the public soon after the facility is closed.
Waste classified as low-hazard would be generally acceptable for disposal in a dedicated near-surface facility for hazardous wastes. Limits on concentrations of hazardous substances in low-hazard waste would be derived based on an assumption that the risk or dose to a hypothetical inadvertent intruder at a disposal site should not exceed acceptable (barely tolerable) levels. 3). As a result, limits on concentrations of hazardous substances in low-hazard waste generally should be substantially higher than in exempt waste.
The use of higher risks or doses in classifying low-hazard waste can be justified on the following grounds. Institutional control is planned to be maintained over dedicated near-surface disposal sites for hazardous wastes until the sites can be released for unrestricted use by the public. Furthermore, allowable risks or doses used to define conditions for unrestricted release should be similar to the values that would be used to determine exempt waste. Therefore, prior to unrestricted release of a site, scenarios for inadvertent intrusion into near-surface disposal facilities for low-hazard waste should be regarded as accidental occurrences.
Risk-Based Classification of Radioactive and Hazardous Chemical Wastes (Ncrp Report, No. 139) by Michael Joyce
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