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Engineering Basis Document Review for Waste Feed Delivery from Single Shell Tanks (SST)

Description: This report provides the results of a review conducted on existing operating specifications and safety requirements and provides a summary of applicable design constraints on the Single-Shell Tank (SST) System. The SST System is required to transition from the current waste storage mission to support the Tank Waste Remediation System (TWRS) waste retrieval mission described in the Tank Waste Remediation System Mission Analysis Report (Acree 1998). The SST System is also required to support the Project Hanford Management Contract (PHMC) portions of the Waste Feed Delivery (WFD) mission. In Phase 1 the SST System will be required to retrieve waste from selected SSTs (tanks 241-C-102 and 241-C-104) for transfer to the Double-Shell Tank (DST) System (tanks 241-AZ-101,241-AY-102). The SST System will include all the systems, structures and components required to safely store, retrieve, and transfer waste in support of the TWRS mission. Operational Specification Documents (OSDs) govern operation of the existing SST System components. However, the system will be highly modified to support the TWRS mission. Therefore OSD requirements may not apply to the new system's design. This document describes the review of existing SST OSDs and provides the rationale for selecting or rejecting requirements as constraints on the SST System design. The selected requirements (or design constraints) will be included in System Specification for the Single-Shell Tank System, HNF-3912(Conrads 1999).
Date: October 7, 1999
Creator: SMITH, D.F.
Partner: UNT Libraries Government Documents Department

Performance Requirements for the Double Shell Tank (DST) System Phase 1

Description: This document describes the performance requirements for the Double-Shell Tank (DST) System. These requirements reflect the Case 3, Project Planning Case from the Tank Waste Remediation System Operation and Utilization Plan, Revision 1. These requirements, in turn, will be incorporated into a specification for the DST System.
Date: April 20, 2000
Creator: SMITH, D.F.
Partner: UNT Libraries Government Documents Department

Hydrologic resources management program and underground test area operable unit fy 1997

Description: This report present the results of FY 1997 technical studies conducted by the Lawrence Livermore National Laboratory (LLNL) as part of the Hydrology and Radionuclide Migration Program (HRMP) and Underground Test Area Operable Unit (UGTA). The HRMP is sponsored by the US Department of Energy to assess the environmental (radiochemical and hydrologic) consequences of underground nuclear weapons testing at the Nevada Test Site.
Date: May 1, 1998
Creator: Smith, D. F., LLNL
Partner: UNT Libraries Government Documents Department

Functional Analysis for Double Shell Tank (DST) Subsystems

Description: This functional analysis identifies the hierarchy and describes the subsystem functions that support the Double-Shell Tank (DST) System described in HNF-SD-WM-TRD-007, System Specification for the Double-Shell Tank System. Because of the uncertainty associated with the need for upgrades of the existing catch tanks supporting the Waste Feed Delivery (WFD) mission, catch tank functions are not addressed in this document. The functions identified herein are applicable to the Phase 1 WFD mission only.
Date: August 22, 2000
Creator: SMITH, D.F.
Partner: UNT Libraries Government Documents Department

CRITICALITY MEASUREMENTS ON PLUTONIUM METAL PRELIMINARY TO THE DESIGN OF A MELTING CRUCIBLE

Description: A series of neutron multiplication measurements were made on assemblies of Pu metal (density 15.8 g/cm/sup 3/) in order that a safe melting crucible could be designed for charges of 10 kg or more. Suitable ingot shapes and masses that could be rolled into sheets were determined. Final charge limits must be determined by making in situ measurements with the actual production furnace when the furnace and crucible are compieted. (H.G.G.)
Date: June 1, 1956
Creator: Schuske, C.L.; Arthur, M.G. & Smith, D.F.
Partner: UNT Libraries Government Documents Department

PLUTONIUM PLEXIGLAS ASSEMBLIES. PART II

Description: Neutron multiplication measurements were made on tamped and untamped cylindrical assemblies. The assemblies consisted of plutonium metal sheet mcderated with Plexiglas. Experiments were performed to evaluate the effects of inhomogeneity. This work is a continuation of RFP-178. (auth)
Date: April 1, 1960
Creator: Bidinger, G.H.; Schuske, C.L. & Smith, D.F.
Partner: UNT Libraries Government Documents Department

Plutonium Plexiglas Assemblies

Description: Neutron multiplication measurements were made on tamped and untamped cylindrical assemblies. The assemblies consisted of Pu metal sheet moderated with Plexiglas, Experiments were performed to evaluate the effects of inhomogeneity. (auth)
Date: January 20, 1960
Creator: Schuske, C. L.; Bidinger, G. H.; Goodwin, A., Jr. & Smith, D. F.
Partner: UNT Libraries Government Documents Department

NUCLEAR SAFETY EXPERIMENTS ON PLUTONIUM AND ENRICHED URANIUM HYDROGEN MODERATED ASSEMBLIES CONTAINING BORON

Description: Neutron multiplication measurements were made on cylindrical assemblies containing layers of plutonium metal disks, Plexiglas disks, and boron carbide impregnated Epolene-n disks. In addition to the above nuclear safety measurements, curves were drawn for a 42-in.diameter stainless-steel tank containing an aqueous solation of UO/sub 2/(NO/sub 3/)/sub 2/ and poisoned with Pyrex Raschig rings. Attempts were made to calculate sphere, infinite cylinder and slab shapes from the experimental finite cylindrical assemblies. (auth)
Date: July 1, 1960
Creator: Schuske, C.L.; Bidinger, G.H. & Smith, D.F.
Partner: UNT Libraries Government Documents Department

Synthesis and Characterization of Nonbanded U-Nb Plate Material

Description: This report describes the synthesis and characterization of four plates, two each of U-5.5Nb and U-7.5Nb (nominal wt%) for aging studies described elsewhere. The plates were induction melted and cast into graphite molds that were unheated and {approx}0.5 inches thick to maximize the cooling rate and minimize large length-scale Nb segregation (banding). Microstructural images and electron microprobe traces observed after various processing stages, including casting, hot rolling, and homogenizing are documented. The as-cast microsegregation assumed the form of an isotropic cellular structure, with an amplitude of 3-15 wt% Nb and 40-50 micron-length scales. Subsequent thermomechanical processing was shown to be sufficient to attain Nb compositional homogeneity on local scales of hundreds of microns. The results of chemical analysis and other characterization methods are given. The principal impurity elements (of the 40+ elements measured) were carbon, boron, oxygen, tantalum, and iron. In all four plates, after homogenization, the Nb distribution across the entire plate cross-section showed minima at the plate faces and a broad maximum in the center, the differential being 0.5-0.7 wt% in U-7.5Nb and 0.2-0.5 wt% in U-5.5Nb. None of the impurity elements showed statistically significant variations between the center 50% of the plate volume vs the outer 25%. These plates were considered nonbanded and compositionally homogeneous for their proposed use because the required tensile, metallographic, and dilatometer specimens could be extracted from the fairly homogeneous center portion of the plate cross-section. Characterization of the phases and their transition temperatures by x-ray diffraction and dilatometry in rapidly quenched specimens from the final product confirmed that the microstructure of this plate material was suitable for the intended aging studies. The as-quenched tensile response from multiple specimens taken from each plate showed some variability, especially in the ultimate tensile strength and elongation to failure. In general, U-5.5Nb has higher strength and ...
Date: January 22, 2007
Creator: R. E. Hackenberg, R. M Aikin, Jr., J. A. Balog, B. L. Bingham, R. Casey, A. Casteel, I. Cordova, R. Forsyth, F. G. Garcia, D. Guidry, D. L. Hammon, W. L. Hults, D. R. Korzekwa, A. M. Kelly, M. W. Kolby, K. A. Lao, J. C. Lashley, M. F. Lopez, R. McCabe, D. E. Nye, P. A. Papin, S. W. Quintana, J. L. Smith, D. F. Teter, D. J. Thoma, T. Tucker, P. K. Tubesing, R. R. Trujillo, C. J. Vigil, and H. M. Volz
Partner: UNT Libraries Government Documents Department