6 Matching Results

Search Results

Comparison of air and water quenching of HDS slugs

Description: This memorandum recommends the use of water quenching, rather than air quenching, for pressed slugs in any future project to substantially update the Building 313-M slug manufacturing facility. At the outset of the recently canceled Project S-4092, Improved Slug Processing Facility (ISPF), 313-M, consensus of the SRP liaison team was to replace the existing water quench facility with air quenching. Principal motivations were to eliminate a liquid waste stream, reduce the quantity of process water used, and attain a more reliable mechanical system. During the ensuing years, unforeseen difficulties with air quenching have been realized. Also, effective methods of reducing and treating the waste streams generated by water quenching have been developed. Both methods the author believes will work. However, the propriety of either method of quenching is a function of the system into which it is being incorporated. Each method carried with it a lot of concealed constraint s and carefully designed additional equipment. There is today a consensus that water quenching is preferable. For future reference, some advantages and disadvantages of the two quenching methods are discussed.
Date: February 3, 1988
Creator: Burk, J. A.
Partner: UNT Libraries Government Documents Department

Mitigation alternatives for L Lake

Description: The current condition of L Lake/Steel Creek was summarized in a report to SCDHEC in June 1988 which reported that the L Lake and Steel Creek ecosystems were adequately developing towards balanced biological communities. If mitigation for L Lake inputs, specifically temperature and nutrients, are required, several viable alternatives are available. A report prepared by Spencer in 1986 discusses the various options available for cooling L-Reactor discharges. In effect, a small cooling tower is the only realistic solution to reducing effluent temperatures. Nutrient mitigation can take several approaches including upstream sewage treatment, hypolimnetic withdrawal, dilution of input water by Par Pond water, precipitation of nutrients, and sediment oxidation. None of these systems would influence the thermal regime, but would significantly reduce nutrient input into the system. One beneficial use of L-Lake thermal effluents is algaculture, the production of useful algae. A document prepared in 1988 concludes that algaculture is a technically and economically feasible mitigation alternative for L Lake and could allow L Lake to be handled under Section 318 of the Clean Water Act.
Date: November 3, 1988
Creator: Moore, D. B.
Partner: UNT Libraries Government Documents Department

Synchronous particle and bucket dynamics

Description: In accelerator theory of particle longitudinal motion, a classical definition if a synchronous particle (synchronous energy, synchronous phase, synchronous orbit) assumes that there is a one-to-one relationship of the accelerator electrical field. In practice, that relationship may not be sustained because of errors in the magnetic field, radio frequency, or because sometimes we do not want to keep that relationship for some reason. In this report we formulate the concept of adiabatic equilibrium between particle and accelerator, and we introduce a definition of synchronous particle when the magnetic field and radio frequency are independent functions of time. The result is that size and shape of the bucket (separatrix) depends not only on the fields rate of change /dot B/, but on the frequency rate /dot f/ as well. This means, for example, we can have a stationary bucket even at the rising field /dot B/ > 0. Having a frequency f in addition to field B and voltage V as parameters controlling the bucket dynamics, we will show how to decrease particle losses during injection and capture. 6 refs., 7 figs.
Date: October 3, 1988
Creator: Kats, J.M.
Partner: UNT Libraries Government Documents Department