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Integrated Chemical Effects Test Project: Test #3 Data Report (NUREG/CR-6914)On this page: Download complete document The following links on this page are to documents in Adobe Portable Document Format (PDF). See our Plugins, Viewers, and Other Tools page for more information. For successful viewing of PDF documents on our site please be sure to use the latest version of Adobe.
Publication InformationManuscript Completed: August 2006 Principal Investigator: J. Dallman Prepared by D. Chen, K. Howe L. Archuleta, F. Sciacca B.P. Jain, NRC Project Manager AbstractA 30-day test was conducted in the Integrated Chemical Effects Test (ICET)
project test apparatus. The test simulated the chemical environment present inside
a pressurized water reactor containment water pool after a loss-of-coolant-accident.
The initial chemical environment contained 14.54 kg of boric acid and
0.663 g of lithium hydroxide. Trisodium phosphate (3.786 kg), hydrochloric acid
(211 mL), and additional boric acid (600 g) were added beginning at 30 minutes
and lasting until 4 hours into the test. The test was conducted for 30 days at a
constant temperature of 60°C (140°F). The materials tested within this
environment included representative amounts of submerged and unsubmerged
aluminum, copper, concrete, zinc, carbon steel, and insulation samples (80%
calcium silicate and 20% fiberglass). Representative amounts of concrete dust and
latent debris were also added to the test solution. Water was circulated through the
bottom portion of the test chamber during the entire test to achieve representative
flow rates over the submerged specimens. The test solution reached a pH of 7.9
by Day 3, and the test solution turbidity decreased to less than 1 NTU after 24
hours. During the introduction of trisodium phosphate at the beginning of the test,
a white flocculence was observed through the submerged observation window.
This flocculence was accompanied by a rise in turbidity and total suspended
solids (TSS). Turbidity and TSS dropped after chemical addition was complete, |
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