Distribution Development for STORM Ingestion Input Parameters [electronic resource]

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Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 612.3 Digestion

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. National Nuclear Security Administration ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2017

Mô tả vật lý: Size: 110 p. : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 261962

 The Sandia-developed Transport of Radioactive Materials (STORM) code suite is used as part of the Radioisotope Power System Launch Safety (RPSLS) program to perform statistical modeling of the consequences due to release of radioactive material given a launch accident. As part of this modeling, STORM samples input parameters from probability distributions with some parameters treated as constants. This report described the work done to convert four of these constant inputs (Consumption Rate, Average Crop Yield, Cropland to Landuse Database Ratio, and Crop Uptake Factor) to sampled values. Consumption rate changed from a constant value of 557.68 kg / yr to a normal distribution with a mean of 102.96 kg / yr and a standard deviation of 2.65 kg / yr. Meanwhile, Average Crop Yield changed from a constant value of 3.783 kg edible / m <
 sup>
 2<
 /sup>
  to a normal distribution with a mean of 3.23 kg edible / m <
 sup>
 2<
 /sup>
  and a standard deviation of 0.442 kg edible / m <
 sup>
 2<
 /sup>
  . The Cropland to Landuse Database ratio changed from a constant value of 0.0996 (9.96%) to a normal distribution with a mean value of 0.0312 (3.12%) and a standard deviation of 0.00292 (0.29%). Finally the crop uptake factor changed from a constant value of 6.37e<
 sup>
 -4<
 /sup>
  (Bq crop /kg)/(Bq soil /kg) to a lognormal distribution with a geometric mean value of 3.38e<
 sup>
 -4<
 /sup>
  (Bq crop /kg)/(Bq soil /kg) and a standard deviation value of 3.33 (Bq crop /kg)/(Bq soil /kg)
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