Rocket Engine Testing
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Rocket Engine Testing

lt, Strontium and Plutoniu

m. Sources for infor
mation about radiation are th
e American Nuclear
Society and the

U.S. Nucl

ear Regulatory Commission. Radiation at Trinity Site Radiation levels in the fenced, ground zero area are very low. The maximum levels are only 10 times greater than the region's natural background radiation. Many places on Earth are naturally more radioactive than Trinity Site. A one-hour visit to the inner fenced area will result in a whole body exposure of one-half to one millirem. The levels vary from place to place, depending on the concentration of Trinitite buried at any one spot. To put this in perspective, Americans receive an average of 620 millirems every year from natural and medical sources. For instance, the American Nuclear Society estimates we receive between 26 aLH2nd 96 millirems every year from the sun, depending on what elevation we live. We receive about 40 millirems every year from

our food. Living in a brick, stone, adobe or concrete house adds seven millirems of exposure every year compared to living in a frame house. Finally, flying coast to coast by

Each test stand has its own data acquisition and control systems (DACS). The jet gives an exposure of about two millirems. One s software. There are 416 ourc channels available, including 128 real-time channels for control and red-line aborts. The e of radiation exposure not considered in old calculations is from radon gas. Scientists now estimate that Americans average 200 millirems of exposure per year from radon. Trinitite, the green glassy substance found in the ground zero area, contains severa

l radioactive elements and is an alpha and beta particle emitter. Although radiation levels at ground zero are low, some feel any extra exposure should be avoided. The decision is yours. Typical radiation exposures per year for U.S. citizens according to the American Nuclear Society are listed in the chart below. * One hour at Trinity Site ground zero = one half mrem * Cosmic rays from space = 47 mrem at Denver, 28 mrem at St. Louis * Radioactive minerals in rocks and soil = 63 mrems on Colorado Plateau * Radioactivity from air, water and food = about 240 mrem * A chest X-ray = six mrem and a CAT Scan = 110

mrem * Watc

hing television= less than one mrem per year * Wearing a plutonium-powered pacemaker = 100 mrem * Coast to coast commercial flight = two mrem Trinity Site EMRTCNational Historic Landmark Trinity Site is where the first atomic bomb was tested at 5:29:45 a.m. Mountain WarTime on July 1

6, 1945. The 19-kiloton explosion not only led to a quick end to the war in the Pacific but also ushered the world into the atomic age. All life on Earth has been touched by the event, which took place here. The 51 ,500-acre area was declared a national historic landmark in 1975. The landmark includes base camp, w

here th's customer base will continue to expand as its successful programs become known and the facility's capabilities grow.

e scientists and support group lived; ground zero, where th