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Title: Gas Retention and Release from Hanford Site Sludge Waste Tanks

Radioactive wastes from nuclear fuel processing are stored in large underground storage tanks at the Hanford Site. Solid wastes can be divided into saltcake (mostly precipitated soluble sodium nitrate and nitrite salts with some interstitial liquid consisting of concentrated salt solutions) and sludge (mostly low solubility aluminum and iron compounds with relatively dilute interstitial liquid). Waste generates hydrogen through the radiolysis of water and organic compounds, radio-thermolytic decomposition of organic compounds, and corrosion of a tank’s carbon steel walls. Nonflammable gases, such as nitrous oxide and nitrogen, are also produced. Additional flammable gases (e.g., ammonia and methane) are generated by chemical reactions between various degradation products of organic chemicals present in the tanks.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
1222104
Report Number(s):
PNNL-SA-108228
830403000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Annual Waste Management Symposium (WM2015) March 15-19, 2015, Phoenix, Arizona, 8:5963-5973; Paper No. 15491
Publisher:
WM Symposia, Inc., Tempe, AZ, United States(US).
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES Gas Retention; Release; Hanford; Sludge; Waste; Waste Tanks; Sludge Waste; Rentention and Release