Seismic Engineering for an Expanded Tritium Facility at Los Alamos National Laboratory

An existing complex of three single story concrete and masonry shear wall buildings will be integrated into an expanded tritium facility for neutron tube target loading. Known as the NTTL Project, the expanded plant is a major element of the Department of Energy`s tritium program at the Los Alamos National Laboratory. This paper describes seismic evaluation and upgrade modifications for the 1950`s concrete shear wall building; drift analyses of two 1980`s CMU [concrete masonry unit] shear wall buildings; design of a new CMU shear wall building linking existing structures and providing personnel change room services; and design of a new steel frame building housing HVAC and electrical power and communication equipment for the complex. All buildings are closely adjacent and drift analysis to establish separation to prevent pounding is a major seismic engineering concern for the project

Separation of polonium from bismuth by distillation /

The experimental work on the separation of polonium from bismuth by distillation during the period from 1949 to 1952 is reviewed. Data are presented showing operation of simple batch stills and of fractionating stills with and without helium sparging. The problem of materials of construction is discussed and data obtained while working on this phase of the project are included. Some of the problems of still design and construction are presented with recommendations for their solution. jg p.5.Work performed at the Mound Laboratory, Miamisburg, Ohio."Date Declassified: November 30, 1955.""August 1, 1953."Includes bibliographical references (p. 42-43).The experimental work on the separation of polonium from bismuth by distillation during the period from 1949 to 1952 is reviewed. Data are presented showing operation of simple batch stills and of fractionating stills with and without helium sparging. The problem of materials of construction is discussed and data obtained while working on this phase of the project are included. Some of the problems of still design and construction are presented with recommendations for their solution. jg p.5.Mode of access: Internet