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CCC-0552 RESRAD-5.82.

RESRAD, Residual Radioactive Material Guideline Implementation

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1. NAME OR DESIGNATION OF PROGRAM:  RESRAD.
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2. COMPUTERS
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Machines used:

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3. DESCRIPTION OF PROGRAM OR FUNCTION

This code system is designed to calculate site-specific residual radioactive material guidelines, and radiation dose and excess cancer risk to an on-site resident (maximally exposed individual). A guideline is a radionuclide concentration or level of radioactivity that is acceptable if a site is to be used without radiological restrictions. Guidelines are expressed as concentrations of residual radionuclides in soil. Soil  is unconsolidated earth material, including rubble and debris that may be present. The guidelines are based on the following principles: (1) the total effective dose equivalent should not exceed 100 mrem/yr for all plausible land uses and 30 mrem/yr for current and likely future land uses and (2) doses should be kept as  low as reasonably achievable (ALARA). Nine environmental pathways are considered: direct exposure, inhalation of dust and radon, and ingestion of plant foods, meat, milk, aquatic foods, soil, and water.
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4. METHOD OF SOLUTION

RESRAD uses a pathway analysis method in which  the relation between radionuclide concentrations in soil and the dose to a member of a critical population group is expressed as a pathway sum, which is the sum of products of "pathway factors". Pathway factors correspond to pathway segments connecting compartments in the environment between which radionuclides can be transported or radiation transmitted.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The groundwater pathway models apply only to situations for which the hydrological strata can reasonably be approximated by a sequence of uniform, horizontal strata.
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6. TYPICAL RUNNING TIME

Less than one minute is generally required on 386, 486 or Pentium computers. The sample case required less than 5seconds on a 486/66 MHz PC.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED AND AUXILIARY PROGRAMS:  RESRAD-BUILD 2.36
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9. STATUS

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10. REFERENCES

- K.F. Eckerman et al.:
  Limiting Values of Radionuclide Intake and Air Concentration
  and Dose Conversion Factors for Inhalation, Submersion and
  Ingestion
  Federal Guidance Report no.11
  EPA-520/1-88-020 (September 1988)
- K.F. Eckerman and J.C. Ryman:
  External Exposure to Radionuclides in Air, Water and Soil
  Federal Guidance Report no.12
  EPA 402-R-93-081 (September 1993)
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11. MACHINE REQUIREMENTS

The code runs on an IBM PC 386, 486 or Pentium compatibles with 3M bytes of free memory and a hard disk with 4 MB of storage space. Use of a math coprocessor is required.
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12. PROGRAMMING LANGUAGE(S) USED

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13. SOFTWARE REQUIREMENTS: OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by:
                Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.

Developed by:
                Argonne National Laboratory
                Argonne, IL, U. S. A.
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16. MATERIAL AVAILABLE
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17. CATEGORIES

Keywords: environment, radiation effects, radioactive release, radionuclide migration, risk assessment.