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Title: Solvent Hold Tank Sample Results for MCU-18-123- 125 (April 2018), MCU-18-135-137 (May 2018), and MCU-18-192-197(June 2018): Quarterly Report

Abstract

A trend summary of three Solvent Hold Tank (SHT) monthly samples MCU-18-123-125, MCU-18-135- 137, and MCU-18-192-197 are reported. Most of the conclusions are based on the June SHT sample (MCU- 18-192-197). Analyses of the June SHT sample (MCU-18-192-197) indicated that the Modifier (CS-7SB) and the extractant (MaxCalix) concentrations were at the nominal recommended concentrations (169,000 mg/L and 46,400 mg/L respectively). The suppressor ( N,N’,N”–tris(3,7-dimethyloctyl)guanidine or TiDG) concentration has decreased since the April 2018 measurement (Modular Caustic-Side Solvent Extraction Unit or MCU resumed processing radioactive salt solution from May through August 2018) to 1,116 mg/L, well above the minimum recommended concentration (479 mg/L), but below the nominal concentration. The apparent “downwards” trends observed in the TiDG, MaxCalix, Modifier, and gamma measurement are consistent with the start up (and/or proficiency runs) of MCU on May 22, 2018 since these new concentrations are consistent with the concentrations observed when MCU was fully operational in 2016.

Authors:
 [1];  [1]
  1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1480837
Report Number(s):
SRNL-STI-2018-00068
DOE Contract Number:  
AC09-08SR22470
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
MCU; ARP; ISDP; NGS

Citation Formats

Fondeur, F. F., and Jones, D. H. Solvent Hold Tank Sample Results for MCU-18-123- 125 (April 2018), MCU-18-135-137 (May 2018), and MCU-18-192-197(June 2018): Quarterly Report. United States: N. p., 2018. Web. doi:10.2172/1480837.
Fondeur, F. F., & Jones, D. H. Solvent Hold Tank Sample Results for MCU-18-123- 125 (April 2018), MCU-18-135-137 (May 2018), and MCU-18-192-197(June 2018): Quarterly Report. United States. doi:10.2172/1480837.
Fondeur, F. F., and Jones, D. H. Thu . "Solvent Hold Tank Sample Results for MCU-18-123- 125 (April 2018), MCU-18-135-137 (May 2018), and MCU-18-192-197(June 2018): Quarterly Report". United States. doi:10.2172/1480837. https://www.osti.gov/servlets/purl/1480837.
@article{osti_1480837,
title = {Solvent Hold Tank Sample Results for MCU-18-123- 125 (April 2018), MCU-18-135-137 (May 2018), and MCU-18-192-197(June 2018): Quarterly Report},
author = {Fondeur, F. F. and Jones, D. H.},
abstractNote = {A trend summary of three Solvent Hold Tank (SHT) monthly samples MCU-18-123-125, MCU-18-135- 137, and MCU-18-192-197 are reported. Most of the conclusions are based on the June SHT sample (MCU- 18-192-197). Analyses of the June SHT sample (MCU-18-192-197) indicated that the Modifier (CS-7SB) and the extractant (MaxCalix) concentrations were at the nominal recommended concentrations (169,000 mg/L and 46,400 mg/L respectively). The suppressor (N,N’,N”–tris(3,7-dimethyloctyl)guanidine or TiDG) concentration has decreased since the April 2018 measurement (Modular Caustic-Side Solvent Extraction Unit or MCU resumed processing radioactive salt solution from May through August 2018) to 1,116 mg/L, well above the minimum recommended concentration (479 mg/L), but below the nominal concentration. The apparent “downwards” trends observed in the TiDG, MaxCalix, Modifier, and gamma measurement are consistent with the start up (and/or proficiency runs) of MCU on May 22, 2018 since these new concentrations are consistent with the concentrations observed when MCU was fully operational in 2016.},
doi = {10.2172/1480837},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

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