Tank 241-C-106 sampling data requirements developed through the data quality objectives (DQO) process

Technical Report · Sat Jan 01 04:00:00 EST 1994

DOI:https://doi.org/10.2172/10154723· OSTI ID:10154723

Wang, O S; Bell, K E ^[1]; Anderson, C M; Peffers, M S; Pulsipher, B A; Scott, J L ^[2]

---

1. Westinghouse Hanford Co., Richland, WA (United States)
2. Pacific Northwest Lab., Richland, WA (United States)

The rate of heat generation for tank 241-C-106 at the Hanford Site is estimated at more then 100,000 Btu/h. The heat is generated primarily from the radioactive decay of {sup 90}Sr waste that was inadvertently transferred into the tank in the late 1960s. If proper tank cooling is not maintained for this tank, heat-induced structural damage to the tank`s concrete shell could result in the release of nuclear waste to the environment. Because of high-heat concerns in January 1991, tank 241-C-106 was designated as a Watch List tank and deemed as a Priority 1 safety issue. Waste Tank Safety Program (WTSP) is responsible for the resolution of this safety issue. Although forced cooling is effective for short term, the long-term resolution for tank cooling is waste retrieval. Single-shell Tank Retrieval Project (Retrieval) is responsible for the safe retrieval and transfer of radioactive waste from tank 241-C-106 to a selected double-shell tank. This data quality objective (DQO) study is an effort to determine engineering and design data needs for WTSP and assist Retrieval in designing contingency action retrieval systems. The 7-step DQO process is a tool developed by the Environmental Protection Agency with a goal of identifying needs and reducing costs. This report discusses the results of two DQO efforts for WTSP and Retrieval. The key data needs to support WTSP are thermal conductivity, permeability, and heat load profile. For the Retrieval support, there are nine and three data needs identified, respectively, for retrieval engineering system design and HVAC system design. The updated schedule to drill two core samples using rotary mode is set for March 1994. The analysis of the sample is expected to be completed by September 1994.

• Research Organization: Westinghouse Hanford Co., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-87RL10930
• OSTI ID: 10154723
• Report Number(s): WHC-EP--0723; ON: DE94012393; BR: 35AF11201/35AF11202
• Country of Publication: United States
• Language: English

Related Subjects

052002
054000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
HANFORD RESERVATION
HEALTH AND SAFETY
PLANNING
QUALITY ASSURANCE
RADIOACTIVE WASTE DISPOSAL
RADIOLYSIS
REACTION HEAT
SAFETY ANALYSIS
SAFETY ENGINEERING
SAMPLING
TANKS
WASTE DISPOSAL AND STORAGE
WASTE RETRIEVAL