Action plan for response to excessive temperatures in Hanford Site High-Heat Waste Tank 241-C-106. Revision 2
Tank 241-C-106 is one of eight high-heat tanks at the Hanford Site in south central Washington State, and is the only tank on Hanford`s High-Heat Tank Watch List. This action plan defines possible abnormal conditions (such as ventilation system failure and leaking tank) that could lead to excessive temperature increase in tank 241-C-106, and documents pre-planned contingency actions that would effectively mitigate the consequences of such increased temperatures. Potential structural damage may result from high temperatures caused by inadequate cooling. Tank 241-C-106 contains a significant amount of high-heat radioactive waste, main1y strontium, and requires forced ventilation in combination with evaporation for adequate cooling. Forced ventilation at 2,500 ft{sup 3}/min, along with water addition at a rate near 6,000 gal/month, is currently being administered to maintain cooling of the tank. This action plan addresses high-heat concerns and corrective measures unique to tank 241-C-106. Other general emergency actions for the 200 Area Tank Farms, such as those for fires and earthquakes, are described in WHC-CM-4-43, {open_quotes}Emergency Management Procedures{close_quotes} and are not included in this document. Tank 241-C-106 is presently a non-leaking tank. If tank 241-C-106 were to leak, maintaining current cooling water levels would result in continual water loss to the ground and further environmental damage. If cooling water additions to the tank are stopped in the event of a leak, the sludge could heat to temperatures greater than established safety limits and could cause tank structural damage. A Tri-Party Agreement milestone and a Department of Energy Safety Initiative milestone have been established to start waste retrieval from tank 241-C-106 in October 1996.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-87RL10930
- OSTI ID:
- 53678
- Report Number(s):
- WHC-EP-0473-Rev.2; ON: DE95010200; TRN: 95:011847
- Resource Relation:
- Other Information: PBD: Mar 1995
- Country of Publication:
- United States
- Language:
- English
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Action plan for response to excessive temperature in high heat source waste tank 241-C-106 at the Hanford Site