Screening Risk Evaluation Methodology
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Health Sciences Research Division, Risk Analysis Section; Midwest Technical, Inc., Oak Ridge, TN (United States)
The Screening Risk Evaluation (SRE) Guidance document is a set of guidelines provided for the uniform implementation of SREs performed on D&D facilities. These guidelines are designed specifically for the completion of the second (semi-quantitative screening) phase of the D&D Risk-Based Process. The SRE Guidance produces screening risk scores reflecting levels of risk through the use of risk ranking indices. Five types of possible risk are calculated from the SRE: current releases, worker exposures, future releases, physical hazards, and criticality. The Current Release Index (CRI) calculates the risk to human health and the environment from ongoing or probable releases within a one-year time period. The Worker Exposure Index (WEI) calculates the risk to workers, occupants, and visitors in D&D facilities of contaminant exposure. The Future Release Index (FRI) calculates the risk of future releases of contaminants, after one year, to human health and the environment. The Physical Hazards Index (PHI) calculates the risk-to human health due to factors other than that of contaminants. The index of Criticality is approached as a modifying factor to the entire SRE, due to the fact that criticality issues are strictly regulated under DOE. Screening risk results will be tabulated in matrix form and Total Risk will be calculated (weighted equation) to produce a score on which to base early action recommendations. Other recommendations from the screening risk scores will be made based either on individual index scores or from reweighted Total Risk calculations. All recommendations based on the SRE will be made based on a combination of screening risk scores, decision drivers, and other considerations, determined on a project-by-project basis. The SRE is the first and most important step in the overall D&D project level decision making process.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Health Sciences Research Division, Risk Analysis Section; Midwest Technical, Inc., Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10153088
- Report Number(s):
- CONF-940406-9; ON: DE94012340; TRN: 94:012888
- Resource Relation:
- Conference: International Symposium on Decontamination and Decommissioning, Knoxville, TN (United States), 27-29 Apr 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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96 KNOWLEDGE MANAGEMENT AND PRESERVATION
RADIATION HAZARDS
RISK ASSESSMENT
SAFETY
RADIATION PROTECTION
CRITICALITY
ENVIRONMENTAL IMPACTS
Nuclear Criticality Safety Program (NCSP)
Worker Exposure Index (WEI)
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Screening Risk Results
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560180
HEALTH AND SAFETY
RADIATION PROTECTION PROCEDURES