ML19150A295
| ML19150A295 | |
| Person / Time | |
|---|---|
| Site: | PROJ0734 |
| Issue date: | 08/05/2019 |
| From: | John Tappert Division of Decommissioning, Uranium Recovery and Waste Programs |
| To: | Suttora L US Dept of Energy, Office of Environmental Management |
| Felsher H | |
| References | |
| Download: ML19150A295 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 5, 2019 Ms. Linda Suttora, Acting Director Regulatory, Intergovernmental, and Stakeholder Engagement Office of Environmental Mgmt.
U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585
SUBJECT:
SUPPLEMENT TO THE 2013 U.S. NUCLEAR REGULATORY COMMISSION SALTSTONE DISPOSAL FACILITY MONITORING PLAN
Dear Ms. Suttora:
The purpose of this letter is to inform you that the U.S. Nuclear Regulatory Commission (NRC) is supplementing the 2013 NRC Monitoring Plan for the Savannah River Site (SRS) Saltstone Disposal Facility (SDF), Rev. 1, which is available via the NRCs Agencywide Documents Access and Management System (ADAMS) at Accession No. ML13100A113, to increase the priority of Monitoring Factor (MF) 10.05 (Moisture Characteristic Curves (MCCs)), from low to medium.
The changes to the 2013 NRC SDF Monitoring Plan are based on NRC staff evaluation in the Technical Review Report (TRR) issued on May 28, 2019, entitled, Technical Review: Saltstone Waste Form Physical Degradation (ADAMS Accession No. ML19031B221). In that TRR, the NRC staff discussed how the Evaluation Cases in both of the DOE Fiscal Year 2013 and Fiscal Year 2014 Special Analysis Document models relied on MCCs to reduce the projected hydraulic conductivity of saltstone relative to its assumed saturated hydraulic conductivity, thus, giving MCCs additional weight in the evaluation of the DOE models.
As a result, the NRC is increasing its prioritization of MF 10.05 (MCCs) from low to medium because of the potential impact of the MCCs on the new DOE model. This letter supplements the NRC SDF Monitoring Plan, Rev. 1 and staff will factor this change into future activities. The NRC expects to issue Revision 2 of the NRC SDF Monitoring Plan after the NRC reviews the next revision of the DOE SDF Performance Assessment, which is expected to be submitted in 2020.
L. Suttora This letter does not impact other monitoring factors. If you have any questions or need additional information, please contact Harry Felsher of my staff at Harry.Felsher@nrc.gov or at (301) 415-6559.
Sincerely, John R. Tappert, Director Division of Decommissioning, Uranium Recovery and Waste Programs Office of Nuclear Material Safety and Safeguards Docket No. PROJ0734 cc: J. Folk, DOE Barbara Harris, SCDHEC WIR Service List WIR ListServ
L. Suttora
SUBJECT:
SUPPLEMENT TO THE 2013 U.S. NUCLEAR REGULATORY COMMISSION SALTSTONE DISPOSAL FACILITY MONITORING PLAN DATE: August 5, 2019 DISTRIBUTION:
KPinkston GAlexander HArlt LDesotell RLGladney ADAMS ACCESSION NO.: ML19150A295
CMcKenney*
SKoenick*
JTappert*
BPham for DATE 05/30/19 05/30/19 06/10/19 06/10/19 08/05/19 OFFICIAL RECORD COPY