SRNL ALL-PATHWAYS APPLICATION

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The Environmental Analysis and Performance Modeling group of Savannah River National Laboratory (SRNL) performs performance assessments of the Savannah River Site (SRS) low-level waste facilities to meet the requirements of DOE Order 435.1. One of the performance objectives in the DOE Order is that the radiological dose to representative members of the public shall not exceed 25 mrem in a year total effective dose equivalent from all exposure pathways, excluding radon. Analysis to meet this performance objective is generally referred to as all-pathways analysis. SRNL performs detailed transient groundwater transport analysis for the waste disposal units, which has been used ... continued below

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Koffman, L; Elmer Wilhite, E & Leonard Collard, L May 29, 2007.

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The Environmental Analysis and Performance Modeling group of Savannah River National Laboratory (SRNL) performs performance assessments of the Savannah River Site (SRS) low-level waste facilities to meet the requirements of DOE Order 435.1. One of the performance objectives in the DOE Order is that the radiological dose to representative members of the public shall not exceed 25 mrem in a year total effective dose equivalent from all exposure pathways, excluding radon. Analysis to meet this performance objective is generally referred to as all-pathways analysis. SRNL performs detailed transient groundwater transport analysis for the waste disposal units, which has been used as input for the groundwater part of all-pathways analysis. The desire to better integrate all-pathways analysis with the groundwater transport analysis lead to the development of a software application named the SRNL All-Pathways Application. Another requirement of DOE Order 435.1 is to assess the impact of nuclear waste disposal on water resources, which SRS has interpreted for groundwater protection as meeting the EPA regulations for radionuclides in drinking water. EPA specifies four separate criteria as part of their implementation guidance for radionuclides, which are specified as maximum contaminant levels (MCL). (1) Beta/gamma emitters have a combined dose limit of 4 mrem/year. (2) Alpha emitters have a combined concentration limit of 15 pCi/L (called gross alpha), excluding uranium and radon, but including radium-226. (3) Combined radium-226 and radium-228 have a concentration limit of 5 pCi/L. (4) Isotopes of uranium have a combined concentration limit of 30 {micro}g/L. The All-Pathways Application was designed to be an easy-to-use software application that utilizes transient concentration results from groundwater transport analysis to (1) calculate the groundwater part of all-pathways dose and to (2) evaluate the four EPA criteria for groundwater protection.

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  • ANS Topical Meeting on Decommissioning, Decontamination, and Reutilization

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  • Report No.: WSRC-STI-2007-00294
  • Grant Number: DE-AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 909350
  • Archival Resource Key: ark:/67531/metadc881491

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 29, 2007

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 2, 2016, 3:59 p.m.

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Koffman, L; Elmer Wilhite, E & Leonard Collard, L. SRNL ALL-PATHWAYS APPLICATION, article, May 29, 2007; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc881491/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.