Hanford Double-Shell Tank System Orientation

The mission of the U.S. Department of Energy’s (DOE) River Protection Project (RPP) is to store, retrieve, treat and dispose of the highly radioactive waste stored in the Hanford Site tanks in an environmentally sound, safe, and cost-effective manner. The waste is contained in 149 single-shell tanks (SST), 27 double-shell tanks (DST), and one DST that has leaked to the tank annulus. The DSTs are supported by ancillary systems and equipment, which allow the movement of the waste into, within, and out of the tank system. The 242-A Waste Evaporator facility, for concentration of waste, is also a part of the Hanford tank farms waste processing and storage facilities. In fiscal year (FY) 2006, the DSTIP completed the field work and documented the integrity assessment of the DSTs and ancillary equipment as Hanford Federal Facility Agreement and Consent Order – Tri-Party Agreement Milestone 48-14. An Independent Qualified Registered Professional Engineer (IQRPE) certified this assessment and provided recommendations for future integrity work in RPP-28538, Volume 1: IQRPE Double-Shell Tank System Integrity Assessment, HFFACO M-48-14. The second such assessment is currently ongoing and due in FY 2016.

  1. Bandyopadhyay, K., BNL-52527, Guidelines for Development of Structural Integrity Programs for DOE High- Level Waste Storage Tanks, Upton, NY, Brookhaven National Laboratory, 1997.
  2. J.S. Garfield, et al., “Double Shell Tank Integrity Improvement Plan,” Washington River Protection Solutions LLC Company Report, RPP-PLAN-57352, Rev. 1, June 2015.
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