Application of Direct Assessment Approaches and Methodologies to Cathodically Protected Nuclear Waste Transfer Lines
- ARES Corporation, Richland, WA (United States)
- Schiff Associates, Sugar Land TX (United States)
The U.S. Department of Energy's (DOE) Hanford Site is responsible for the safe storage, retrieval, treatment, and disposal of approximately 54 million gallons (204 million liters) of radioactive waste generated since the site's inception in 1943. Today, the major structures involved in waste management at Hanford include 149 carbon steel single-shell tanks, 28 carbon-steel double-shell tanks, plus a network of buried metallic transfer lines and ancillary systems (pits, vaults, catch tanks, etc.) required to store, retrieve, and transfer waste within the tank farm system. Many of the waste management systems at Hanford are still in use today. In response to uncertainties regarding the structural integrity of these systems,' an independent, comprehensive integrity assessment of the Hanford Site piping system was performed. It was found that regulators do not require the cathodically protected pipelines located within the Hanford Site to be assessed by External Corrosion Direct Assessment (ECDA) or any other method used to ensure integrity. However, a case study is presented discussing the application of the direct assessment process on pipelines in such a nuclear environment. Assessment methodology and assessment results are contained herein. An approach is described for the monitoring, integration of outside data, and analysis of this information in order to identify whether coating deterioration accompanied by external corrosion is a threat for these waste transfer lines.
- Research Organization:
- Hanford Site (HNF), Richland, WA (United States); Washington River Protection Solutions, LLC, Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM) (United States)
- DOE Contract Number:
- DE-AC27-08RV14800
- OSTI ID:
- 1060921
- Report Number(s):
- WRPS-54365-FP Rev 0; TRN: US1300213
- Resource Relation:
- Conference: Corrosion 2013 NACE International, Orlando, FL (United States), 17 Mar 2013
- Country of Publication:
- United States
- Language:
- English
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