Immersion and Leach Tests on Solidified Decontamination Wastes from Dresden Unit 1

Abstract

In order to provide technical support to the NRC, Brookhaven National Laboratory has performed leach tests and immersion tests using organic liquids and organic saturated water of concentrated decontamination waste solidified using a vinyl ester-styrene binder.

The leach tests measured the release of Fe, Ni, and Co from these forms in deionized water, groundwater, and seawater. After 64 days, the mean fraction released normalized by V/S for iron was 5.1 ± 1.9 × 10−3 cm in deionized water, 7.1 ± 1.1 × 10−3 cm in groundwater, and 9.0 ± 3.2 × 10−3 cm in seawater. For nickel, 64 day release rates observed were 4.6 ± 1.6 × 10−3 cm, 4.6 ± 1.0 × 10−3 cm, and 5.9 ± 0.6 × 10−3 cm in deionized water, groundwater, and seawater, respectively. After 50 days, the 59Fe release rates were 5.9 ± 0.7 × 10−3, 4.8 ± 2.4 × 10−3, and 2.8 ± 1.0 × 10−3 cm in deionized water, groundwater, and seawater, respectively. For 60Co, the 50 day releases in the three respective leaching media were 6.0 ± 1.7 × 10−3 cm, 6.8 ± 1.0 × 10−3 cm, and 2.3 ± 0.2 × 10−3 cm.

Immersion tests of waste forms prepared at a solidification demonstration held at the Dresden Nuclear Power Station were conducted in toluene, xylene, and water saturated with toluene and xylene. During immersion of samples in the pure organics, large changes in sample volume and weight were observed. Total weight changes of 9.6 ± 0.3% and 21.6 ± 0.7% were observed after 839 hours of immersion in xylene and toluene, respectively. Air drying of the samples led to an overall weight loss of 23.5 ± 0.7% for xylene and 35.6 ± 0.6% for toluene. Qualitatively, similar changes were observed for immersion tests using organic saturated water. Severe sample deterioration was observed in this case, however. The cause of this deterioration is not known.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    U.S. Nuclear Regulatory Commission, “Final Environmental Statement Related to Primary Cooling System Chemical Decontamination at Dresden Nuclear Power Station, Unit No. 1,” NUREG-0686, 1980.

  2. 2.

    H. Filter, Dow Chemical Corporation, Midland, MI, private communication (1980).

  3. 3.

    H. Filter, “Leach Test Data on Solidified Radioactive Decontamination Solvent,” Dow Chemical Corporation, Midland, MI, B 600-138-79, 1980.

    Google Scholar 

  4. 4.

    R. E. Barletta, J. W. Adams, and R. E. Davis, “Physical Tests on Solidified Decontamination Wastes From Dresden Unit 1,” BNL-NUREG-29273R, 1981.

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Robert E. Barletta.

Additional information

Work carried out under the auspices of the U.S. Nuclear Regulatory Commission.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Barletta, R.E., Adams, J.W. & Davis, R.E. Immersion and Leach Tests on Solidified Decontamination Wastes from Dresden Unit 1. MRS Online Proceedings Library 6, 141–146 (1981). https://doi.org/10.1557/PROC-6-141

Download citation