نتایج جستجو برای: radiological hazard
تعداد نتایج: 98668 فیلتر نتایج به سال:
In order to ensure radiation monitoring and protection, an investigation assessment of radiological risks that may be associated with the consumption table waters commonly consumed in Ilorin, Nigeria, was carried out. The activity concentration level 238U, 232Th, 40K determined using thallium activated 3˝×3˝ [NaI(TI)] detector connected ORTEC 456 amplifier. due samples were then estimated. high...
NIST Handbook 146, HAZARD I—Fire Hazard Assessment Method [1], represents the culmination of a long-term program aimed at placing the prediction of fire outcomes on an objective and scientific basis. In the 1970s, NIST supported Harvard University to develop numerical models that could predict the temperature in a room containing a fire. These early models were difficult to use and interpret; r...
Following the Fukushima accident, the International Commission on Radiological Protection (ICRP) convened a task group to compile lessons learned from the nuclear reactor accident at the Fukushima Daiichi nuclear power plant in Japan, with respect to the ICRP system of radiological protection. In this memorandum the members of the task group express their personal views on issues arising during...
The main objective of the present study was to assess natural radioactivity level from soils an abandoned potash mine and its surroundings at Holle locality in Hinda district, Republic Congo. Samples were analyzed using HPGe gamma spectrometer. Activity concentration values obtained varied 21.01 ± 6.47 117.3 2.69 Bq/kg with a mean value 46.15 4.69 40 K; that 238 U 17.36 10.74 40.04 8.58 25.14 1...
The radionuclide contents and their activity concentrations in beach sand, sediment and adjacent soil samples collected from Inani sea beach, Cox’s Bazar, Bangladesh were determined by using a high resolution germanium detector (HPGe) of 20% relative efficiency. A total of eighteen samples of three categories were collected and analysed. The activity concentrations of Ra, Th and K in the sand s...
Abstract One of the main functions DEMO Breeding Blanket (BB) system is to ensure tritium breeding inside reactor. Tritium a beta emitter radioactive isotope, subjected several processes that determine its permeation across materials and leakage towards environment, posing potential safety issues in terms radiological hazard. Thus, evaluation inventories components losses environment plays key ...
This study was carried out to determine the presence of main radionuclides from natural and artificial radioactivity in soil Kosovo, using gamma-ray spectroscopy. The mean activity concentration for Ra-226, Th-232, K-40, Cs-137 22.32 ± 1.41, 22.14 1.31, 358.16 8.85, 12.94 0.44 Bq/kg, respectively. Radium equivalent ranged 47 100 Bq/kg. calculated values gamma index (Iγ), external hazard (Hex), ...
There has been a growing interest in recent years in the modelling of hazards arising from the atmospheric dispersion of chemical, biological and radiological (CBR) agents in the environment, and the threat that they pose to the population and military forces. This is a particularly challenging problem in an urban setting. Dispersion of CBR agents in an atmospheric boundary layer (ABL) over a h...
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