Comparison of brines relevant to nuclear waste experimentation

Abstract

This report was prepared as an amount of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

Hydrogen generation by metal corrosion in simulated Waste Isolation Pilot Plant environments. Final report

“…One brine, designated "Brine A," was based on fie WIPP BrineA composition described by Molecke (1983). Brine A is a high Mg, K, and Na chloride-sulfate brine and is used as a simulant for intergranular Salado Formation brine that might intrude into the WIPP repository horizon.…”

“…The constant-pH tests were to be done using constant-pH brine environments having pH values controlled at 3, 5,7, 9, and 11. Because Mg was known to precipitate from solution at pH values greater than -8.6, ERDA-6 brine (Molecke, 1983), a low-magnesium WIPP-relevant brine, was substituted for Brine A as a candidate brine for the constant-pH tests. It was further found in a PNL investigation that both the Mg and Ca constituents of ERDA-6 brine essentially completely precipitated from solution at a pH value of 11.…”

“…chloride-sulfate brine intended to simulate intergranular Salad0 Formation brines at or near the stratigraphic horizon of the WIPP repository. The "ERDA-6" environment referred to in Tables 3.1 and 3.2 is a modification of a brine originally found in a brine pocket within the boundaries .of the WIPP site (Molecke, 1983). The chemistry of the original brine was modified by eliminating its Ca++, Mg++, and HCO; constituents, making it essentially a saturated Na-K chloride-sulfate brine.…”

Towards a defensible safety case for deep geologic disposal of DOE HLW and DOE SNF in bedded salt.

“…Acid-producing reactions were found to occur in a WIPP-representative brine subjected to elevated temperatures (Molecke 1983) implying that, if an acidic brine was available in sufficient quantity under repository conditions, it could be potentially detrimental to waste container performance. In fact, DOE has recently funded studies of waste container material performance to provide information applicable to a potential salt repository for SNF or HLW (Bryan et al 2011).…”

Hydrogen generation by metal corrosion in simulated Waste Isolation Pilot Plant environments. Progress report for the period November 1989 through December 1992

“…The "brine" environment referred to in the test matrices refers to a saturated Na-Mg-K chloride-sulfate brine designated "Brine A." This brine simulates intergranular Salado Formation brines at or near the stratigraphic horizon of the WIPP repository (Molecke, 1983). it is discussed in detail in Section 5.2.3 of this report.…”