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Title: Hanford Site organic waste tanks: History, waste properties, and scientific issues. Hanford Tank Safety Project

Eight Hanford single-shell waste tanks are included on a safety watch list because they are thought to contain significant concentrations of various organic chemical. Potential dangers associated with the waste in these tanks include exothermic reaction, combustion, and release of hazardous vapors. In all eight tanks the measured waste temperatures are in the range 16 to 46{degree}C, far below the 250 to 380{degree}C temperatures necessary for onset of rapid exothermic reactions and initiation of deflagration. Investigation of the possibility of vapor release from Tank C-103 has been elevated to a top safety priority. There is a need to obtain an adequate number of truly representative vapor samples and for highly sensitive and capable methods and instruments to analyze these samples. Remaining scientific issues include: an understanding of the behavior and reaction of organic compounds in existing underground tank environments knowledge of the types and amounts of organic compounds in the tanks knowledge of selected physical and chemical properties of organic compounds source, composition, quality, and properties of the presently unidentified volatile organic compound(s) apparently evolving from Tank C-103.
Authors:
; ;
Publication Date:
OSTI Identifier:
10123550
Report Number(s):
PNL--8473
ON: DE93007178
DOE Contract Number:
AC06-76RL01830
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Jan 1993
Research Org:
Pacific Northwest Lab., Richland, WA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ORGANIC COMPOUNDS; OXIDATION; FLAMMABILITY; HANFORD RESERVATION; TANKS; THERMODYNAMICS; PUREX PROCESS; FERROCYANIDES; NITRATES; NITRITES; LEAKS; RISK ASSESSMENT; OCCUPATIONAL SAFETY; HEALTH HAZARDS; URANIUM; PLUTONIUM 052002; WASTE DISPOSAL AND STORAGE