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Title: Pulse Jet Mixer Overblow Testing for Assessment of Loadings During Multiple Overblows

Abstract

The U.S. Department of Energy (DOE) Office of River Protection’s Waste Treatment Plant (WTP) is being designed and built to pretreat and then vitrify a large portion of the wastes in Hanford’s 177 underground waste storage tanks. The WTP consists of three primary facilities: pretreatment, low-activity waste (LAW) vitrification, and high-level waste (HLW) vitrification. The pretreatment facility will receive waste feed from the Hanford tank farms and separate it into 1) a high-volume, low-activity liquid stream stripped of most solids and radionuclides and 2) a much smaller volume of HLW slurry containing most of the solids and most of the radioactivity. Many of the vessels in the pretreatment facility will contain pulse jet mixers (PJMs) that will provide some or all of the mixing in the vessels. This technology was selected for use in so-called “black cell” regions of the WTP, where maintenance capability will not be available for the operating life of the WTP. PJM technology was selected for use in these regions because it has no moving mechanical parts that require maintenance. The vessels with the most concentrated slurries will also be mixed with air spargers and/or steady jets in addition to the mixing provided by the PJMs.more » This report contains the results of single and multiple PJM overblow tests conducted in a large, ~13 ft-diameter × 15-ft-tall tank located in the high bay of the Pacific Northwest National Laboratory (PNNL) 336 Building test facility. These single and multiple PJM overblow tests were conducted using water and a clay simulant to bound the lower and upper rheological properties of the waste streams anticipated to be processed in the WTP. Hydrodynamic pressures were measured at a number of locations in the test vessel using an array of nine pressure sensors and four hydrophones. These measurements were made under normal and limiting vessel operating conditions (i.e., maximum PJM fluid emptying velocity, maximum and minimum vessel contents for PJM operation, and maximum and minimum rheological properties). Test data collected from the PJM overblow tests were provided to Bechtel National, Inc. (BNI) for assessing hydrostatic, dynamic, and acoustic pressure loadings on in-tank structures during 1) single overblows; 2) multiple overlapping overblows of two to four PJMs; 3) simultaneous overblows of pairs of PJMs.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
966298
Report Number(s):
PNNL-17231 Rev. 1
830403000; TRN: US0903964
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ACOUSTICS; HYDRODYNAMICS; MAINTENANCE; MIXERS; RADIOACTIVITY; RADIOISOTOPES; SLURRIES; SPARGERS; STORAGE FACILITIES; TANKS; TESTING; VELOCITY; VITRIFICATION; WASTE PROCESSING; WASTE STORAGE

Citation Formats

Pfund, David M, Bontha, Jagannadha R, Michener, Thomas E, Nigl, Franz, Yokuda, Satoru T, Leigh, Richard J, Golovich, Elizabeth C, Baumann, Aaron W, Kurath, Dean E, Hoza, Mark, Combs, William H, Fort, James A, and Bredt, Ofelia P. Pulse Jet Mixer Overblow Testing for Assessment of Loadings During Multiple Overblows. United States: N. p., 2009. Web. doi:10.2172/966298.
Pfund, David M, Bontha, Jagannadha R, Michener, Thomas E, Nigl, Franz, Yokuda, Satoru T, Leigh, Richard J, Golovich, Elizabeth C, Baumann, Aaron W, Kurath, Dean E, Hoza, Mark, Combs, William H, Fort, James A, & Bredt, Ofelia P. Pulse Jet Mixer Overblow Testing for Assessment of Loadings During Multiple Overblows. United States. https://doi.org/10.2172/966298
Pfund, David M, Bontha, Jagannadha R, Michener, Thomas E, Nigl, Franz, Yokuda, Satoru T, Leigh, Richard J, Golovich, Elizabeth C, Baumann, Aaron W, Kurath, Dean E, Hoza, Mark, Combs, William H, Fort, James A, and Bredt, Ofelia P. 2009. "Pulse Jet Mixer Overblow Testing for Assessment of Loadings During Multiple Overblows". United States. https://doi.org/10.2172/966298. https://www.osti.gov/servlets/purl/966298.
@article{osti_966298,
title = {Pulse Jet Mixer Overblow Testing for Assessment of Loadings During Multiple Overblows},
author = {Pfund, David M and Bontha, Jagannadha R and Michener, Thomas E and Nigl, Franz and Yokuda, Satoru T and Leigh, Richard J and Golovich, Elizabeth C and Baumann, Aaron W and Kurath, Dean E and Hoza, Mark and Combs, William H and Fort, James A and Bredt, Ofelia P},
abstractNote = {The U.S. Department of Energy (DOE) Office of River Protection’s Waste Treatment Plant (WTP) is being designed and built to pretreat and then vitrify a large portion of the wastes in Hanford’s 177 underground waste storage tanks. The WTP consists of three primary facilities: pretreatment, low-activity waste (LAW) vitrification, and high-level waste (HLW) vitrification. The pretreatment facility will receive waste feed from the Hanford tank farms and separate it into 1) a high-volume, low-activity liquid stream stripped of most solids and radionuclides and 2) a much smaller volume of HLW slurry containing most of the solids and most of the radioactivity. Many of the vessels in the pretreatment facility will contain pulse jet mixers (PJMs) that will provide some or all of the mixing in the vessels. This technology was selected for use in so-called “black cell” regions of the WTP, where maintenance capability will not be available for the operating life of the WTP. PJM technology was selected for use in these regions because it has no moving mechanical parts that require maintenance. The vessels with the most concentrated slurries will also be mixed with air spargers and/or steady jets in addition to the mixing provided by the PJMs. This report contains the results of single and multiple PJM overblow tests conducted in a large, ~13 ft-diameter × 15-ft-tall tank located in the high bay of the Pacific Northwest National Laboratory (PNNL) 336 Building test facility. These single and multiple PJM overblow tests were conducted using water and a clay simulant to bound the lower and upper rheological properties of the waste streams anticipated to be processed in the WTP. Hydrodynamic pressures were measured at a number of locations in the test vessel using an array of nine pressure sensors and four hydrophones. These measurements were made under normal and limiting vessel operating conditions (i.e., maximum PJM fluid emptying velocity, maximum and minimum vessel contents for PJM operation, and maximum and minimum rheological properties). Test data collected from the PJM overblow tests were provided to Bechtel National, Inc. (BNI) for assessing hydrostatic, dynamic, and acoustic pressure loadings on in-tank structures during 1) single overblows; 2) multiple overlapping overblows of two to four PJMs; 3) simultaneous overblows of pairs of PJMs.},
doi = {10.2172/966298},
url = {https://www.osti.gov/biblio/966298}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 20 00:00:00 EDT 2009},
month = {Mon Jul 20 00:00:00 EDT 2009}
}