This document includes the calculations performed to quantify the risk associated with the unmitigated and mitigated accident scenarios described in the TWRS FSAR for the accident analysis titled: Subsurface Leaks Resulting in Pool.

This document includes the calculations performed to quantify the risk associated with the unmitigated and mitigated accident scenarios described in the TWRS FSAR for the accident analysis titled: Surface Leaks Resulting in Pool.

This document contains the detailed calculations that support the spray leak accident analysis in the Tank Waste Remediation System (TWRS) Final Safety Analysis Report (FSAR). The consequence analyses in this document form the basis for the selection of controls to mitigate or prevent spray leaks throughout TWRS. Pressurized spray leaks can occur due to a breach in containment barriers along transfer routes, during waste transfers. Spray leaks are of particular safety concern because, depending on leak dimensions, and waste pressure, they can be relatively efficient generators of dispersible sized aerosols that can transport downwind to onsite and offsite receptors. Waste is transferred between storage tanks and between processing facilities and storage tanks in TWRS through a system of buried transfer lines. Pumps for transferring waste and jumpers and valves for rerouting waste are located inside below grade pits and structures that are normally covered. Pressurized spray leaks can emanate to the atmosphere due to breaches in waste transfer associated equipment inside these structures should the structures be uncovered at the time of the leak. Pressurized spray leaks can develop through holes or cracks in transfer piping, valve bodies or pump casings caused by such mechanisms as corrosion, erosion, thermal stress, …

This document supports the development and presentation of the following accident scenario in the TWRS Final Safety Analysis Report: Mixing of Incompatible Materials - Tank Pressurization.The calculations needed to quantify the risk associated with this accident scenario are included within.

This report briefly describes the efforts by the organizing committee in preparation for the conference entitled Controlling Our Destinies: Historical, Philosophical, Social, and Ethical Perspectives on the Human Genome Project. The conference was held October 5-8, 1995.

The south end cap calorimeter (ECS) will need to be moved off of the detector platform to allow for the installation of new central tracking components. This engineering note documents the cryogenic and safety issues associated with the planned move. Because of the difficulty involved in building a temporary vent line out of the building, we plan to vent the ECS condenser flow, 6 scfm N2 into the assembly hall atmosphere. Information contained herein proves that this is safe even for failure/relief conditions. The details regarding the cryogenic and safety aspects of the ECS move have been thought out and planned. The cryogenic operation of the ECS calorimeter will be limited to maintaining it's pressure by keeping it cold and isolated while it is in it's temporary position off the platform. The 4 gph liquid nitrogen flow required for this operation is easily absorbed into the DZero assembly building atmosphere without any safety concerns. Emergency or failure scenarios have been addressed on a conservative basis and also pose little threat. Other safety features built into the system such as the liquid nitrogen excess flow switch, vent line liquid sensor, and monitored ODH heads provide additional assurance that an unexpected hazard …

The device reported is a simple, robust, low-cost device to sample fast analog signals and convert them into digital data. Goal is to utilize existingleCroy Front End developments and BNL previous efforts to: Extend the dynamic range from 8 to 9-10 bits; Extend the depth of memory; Lower the cost; and Increase availability to general research and industrial cornmunity.

Engineering Report to document moisture problems found during the sampling of the vapors in the dome space for hydrogen in the storage tanks and a recommended solution.

An analytic solution is obtained for free-boundary, high-beta equilibria in large aspect ratio tokamaks with a nearly circular plasma boundary. In the absence of surface currents at the plasma-vacuum interface, the free-boundary equilibrium solution introduces constraints arising from the need to couple to an external vacuum field which is physically realizable with a reasonable set of external field coils. This places a strong constraint on the pressure profiles that are consistent with a given boundary shape at high {epsilon}{beta}{sub p}. The equilibrium solution also provides information on the flux surface topology. The plasma is bounded by a separatrix. Increasing the plasma pressure at fixed total current causes the plasma aperture to decrease in a manner that is described.

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The purpose of the project was to provide a set of supplemental instructional equipment and materials to Tennessee high school students to raise their level of knowledge about manufacturing technologies with the hope that some of the best and brightest would choose manufacturing as a career path. The role of the Y-12 Plant was primarily technical: renovate the portable classroom; select and purchase appropriate equipment; install and test the equipment; assist in the development of the curriculum; train the initial group of teachers; and provide technical assistance where needed after the laboratory was deployed. The role of the Department of Education was to provide the mobile facility; assist in the design of the laboratory; lead the development of the curriculum; deploy the trailer; and develop the structure for administering the selection of schools, training teachers, and movement of the laboratory. The Department of Education as subcontracted with Middle Tennessee State University to handle the details of laboratory deployment.

Stored waste tank sampling of radioactive high-level nuclear waste is reilu ired for continued operations, waste characterization, and site safety. The Hanford site tank farms consist of 28 double- shell and 1.49 single-shell underground storage tanks. The ``full`` capacity of each of these tanks is approximately 1 million gallons. The waste stored in these tanks was generated as a result of defense materials production over the course of 4 decades. The single shell tanks are out-of-service and no longer receive liquid waste. Core samples of salt cake, liquid and sludge are remotely obtained using truck-mounted core drill platforms. Samples are recovered from the tanks through a 2.25-inch diameter drill pipe,, in segments contained in specially designed stainless steel samplers approximately 1.5-inch in outside diameter and 26-inches long. The sampled material in a given segment can include crystalline salt-cake, liquid, sludge and entrained gas. Drilling parameters will necessarily vary with different waste types, e.g., crystalline salt-cake versus sludge. At times, the core sample recovery has been marginal and inadequate for laboratory analysis needs. This necessitated a system to provide the drill-truck operators with ``real-time`` feedback about the physical condition of the sampled ``formation`` and the percent recovery, prior to receiving .,isual …

The effect of plasma perturbers on ionic systems inside a plasma is complex, time-dependent, and stochastic. It affects not only the population of the various excited and charge states of the ions, but also the life time of these states. The broadening and population of the states inside plasmas must be treated simultaneously in a coherent way. The purpose of this project was to develop a systematic theoretical procedure to treat the effects of plasma perturbers on the atomic reaction rates, in a way consistent with the rate equation approach to plasma modeling. As explained in the following, we have completed the program set out originally. Further works needed are also pointed out. We first formulated a theoretical procedure to treat this problem in a simple form such that the theory may be applied to realistic cases. The crucial features of the conventional approaches for plasma modeling and diagnostics, the pressure broadening theory (PBT) and the rate equations approach (REQ), are adopted in treating the level distortions and population determination. The PBT is effective in treating the distortion, while the REQ approach is suitable in treating multiple cascade effects on the level population. In order to combine both these theories, …

The purpose of this report is to document the results of a study which investigated the feasibility of physically locating one or more functions that will be required to support the Accelerator Production of Tritium (APT) Project in M-Area facilities at the Savannah River Site (SRS).

This tank characterization report summarizes information on the historical uses, current status, and sampling and analysis results of waste stored in single-shell underground tank 241-C-106. This report supports the requirements of the Hanford Federal Facility Agreement and Consent Order, Milestone M-44-09 (Ecology et al. 1996). Tank 241-C-106 is the only tank on the High-Heat Load Watch List. As a result of the analyses addressed by this report, the supernate and upper 60 percent of the sludge in the tank do not pose any safety concerns in addition to the high-heat load issue based on the decision limits of the safety screening data quality objective (DQO) (Dukelow et al. 1995). The lower 40 percent of the sludge was not sampled; therefore, no statements regarding the safety of this waste can be made. A portion of the tank sludge is scheduled to be retrieved in fiscal year 1997 in order to mitigate the high-heat load in the tank.