Radioxenon isotopes play a major role in confirming whether or not an underground explosion was nuclear in nature. It is then of key importance to understand the sources of environmental radioxenon to be able to distinguish civil sources from those of a nuclear explosion. Based on several years of measurements, combined with advanced atmospheric transport model results, it was recently shown th...

The relative size of 15 underground nuclear explosions at the Novaya Zemlya test site is determined by applying a relative waveform analysis called intercorrelation to 566 teleseismic short-period P-waves. The waveforms are corrected for the effects of pP interference and yield scaling of the explosion source functions so that signals from different events recorded at the same station can be an...

Buried pipeline leakage will affect the thermal characteristics of soil environment, leading to a poor environment. In addition, natural gas possibly produces an explosion and subsequent fire, which has fatal harm. Sustainable detection underground leaks is significant part current research. this study, method for leak buried PE pipelines based on sound source investigated. The simulation softw...

the risks of fire and explosion in oil and gas industry need to be managed. the objectives of the present study were to assess the risk of fire and explosion in iso-max unit of tehran oil refinery using dow’s fire and explosion index and to study the influences of the controlling methods. the latest version of dow fire and explosion index guideline was applied to calculate the fire and explosio...

the current manuscript presents the validation of smoothed particle hydrodynamics (sph) techniques for wave generation by underwater explosion, utilizing the so-called dualsphysics numerical model. this numerical method is used to analyze generated waves which are initiated by man-made or natural explosions below free surface level of sea. in spite of the modeling limitations (e.g. absence of o...