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Safe Industrial Explosives

#0590


Development of Experiment-Calculation Model to Determine Safe and Critical Temperature-Time Effects on High Explosives (HE) under Conditions of Industrial Application.

Tech Area / Field

  • OTH-OTH/Other/Other

Статус
3 Approved without Funding

Дата регистрации
11.03.1996

Ведущий институт
VNIIEF, Russia, N. Novgorod reg., Sarov

Соавторы

  • Lawrence Livermore National Laboratory / Energetic Materials Center, USA, CA, Livermore\nUniversidade de Coimbra / LEDAP (Laboratori of Energetics and Detonics), Portugal, Coimbra\nNAWCWPNS / Naval Air Warfare Center, USA, CA, China Lake\nLos-Alamos National Laboratory, USA, NM, Los-Alamos

Краткое описание проекта

Explosives are widely used in commercial applications, for example, in oil and gas industry. During some procedures (e.g. HE reprocessing, borehole perforation and so on) HE undergoes short-term and long-term effects of elevated temperatures, which can cause change of HE properties, its ignition or explosion. That is why the question on allowable (safe) temperature-time conditions of work with HE seems to be rather urgent.

Chemical resistance of HE is the main factor, which provides its safety under heating. Critical state of HE depends also on mass, detail configuration, physical state, character of heating, etc.

In a practice determination of temperature boundaries of safe HE handling is mainly arbitrary, though large quantity of information on investigation of physical and chemical HE resistance by different techniques is involved.

For determination of safe boundaries different criteria are employed, which are based in the most part on solutions of particular tasks. This narrows frames of these criteria application significantly. That is why investigated zone of safe and critical effects does not cover, as a rule, all possible cases of T-t effects on HE.

The purpose of Project is to find general regularity on the base of chosen criteria for determination of boundary between zone of safe T-t effects (for particular HE) and risk zone, where danger extent increases gradually up to critical state (that results in complete decomposition of HE, (its ignition or explosion).

Developed experiment-calculation models will allow to determine safe and critical temperatures and effect durations for different HE and all their combinations possible during exploitation using minimum number of experiments and employing standard techniques.

Objective of Project is in agreement with ISTC objectives providing peaceful alternative opportunities to weapons scientists and engineers, support to fundamental and applied theoretical and experimental-designed works for peaceful purposes including protection of human health and the environments.

It provides scientists of our Institute with opportunity for long-term professional activities including international collaboration, for example, with American scientists of SNL,LANL and LLNL solving the same problems. We believe that collaboration with French scientists from Commisariat of Atom Energy (CEA/DAM) and firms developing shooting-explosive devices for gas and oil industry, such as "Shlumberge" could be promising also.


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