|
The Santa Susana Field Laboratory is a complex of industrial research and development facilities located on a portion of the Southern California Simi Hills in Simi Valley, California, used mainly for the testing and development of liquid-propellant rocket engines for the United States space program from 1949 to 2006,〔 nuclear reactors from 1953 to 1980 and the operation of a U.S. government-sponsored liquid metals research center from 1966 to 1998. The site is located approximately northwest from the community of Canoga Park and approximately northwest of Downtown Los Angeles. Sage Ranch Park is adjacent on part of the northern boundary and the community of Bell Canyon along the entire southern boundary.〔(Sage.Park )〕 Throughout the years, approximately ten low-power nuclear reactors operated at SSFL, in addition to several "critical facilities" which helped develop various programs relating to nuclear science and applications. At least four of the ten nuclear reactors suffered accidents during their time of operation. The reactors located on the grounds of SSFL were considered experimental, and therefore had no containment structures. ==Introduction== Since 1947 the Santa Susana Field Laboratory location has been used by a number of companies and agencies. The first was Rocketdyne, originally a division of North American Aviation-NAA, which developed a variety of pioneering, successful and reliable liquid rocket engines.〔http://www.boeing.com/aboutus/environment/santa_susana/history.html . accessed 8/30/2010〕 Some were those used in the Navaho cruise missile, the Redstone rocket, the Thor and Jupiter ballistic missiles, early versions of the Delta and Atlas rockets, the Saturn rocket family and the Space Shuttle Main Engine. The Atomics International division of North American Aviation utilized a separate and dedicated portion of the Santa Susana Field Laboratory to build and operate the first commercial nuclear power plant in the United States and for the testing and development of compact nuclear reactors including the first and only known nuclear reactor launched into Low Earth Orbit by the United States, the SNAP-10A. Atomics International also operated the Energy Technology Engineering Center for the U.S. Department of Energy at the site. The Santa Susana Field Laboratory includes sites identified as historic by the American Institute of Aeronautics and Astronautics and by the American Nuclear Society. In 1996, The Boeing Company became the primary owner and operator of the Santa Susana Field Laboratory and later closed the site. Three California state agencies and three federal agencies have been overseeing a detailed investigation of environmental impacts from historical site operations since at least 1990. Concerns about the environmental impact of past disposal practices have inspired at least two lawsuits seeking payment from Boeing and several interest groups are actively involved with steering the ongoing environmental investigation. The Santa Susana Field Laboratory is the focus of diverse interests. The National Register of Historic Places listed Burro Flats Painted Cave is located within the Santa Susana Field Laboratory, on a portion of the site owned by the U.S. government. The drawings within the cave have been termed "the best preserved Indian pictograph in Southern California." Several tributary streams to the Los Angeles River have headwater watersheds on the SSFL property, including Bell Creek (90% of SSFL drainage), Dayton Creek, Woolsey Canyon, and Runkle Creek.〔http://www.enviroreporter.com/images/ESADA/2003-SSFL-surface%20water-map.jpg (accessed 4/10/2010) SSFL Watersheds Map〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Santa Susana Field Laboratory」の詳細全文を読む スポンサード リンク
|