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Monday, July 27, 2020 | History

2 edition of Impact and thermal sensitivity of commercial detonators found in the catalog.

Impact and thermal sensitivity of commercial detonators

Karl R. Becker

Impact and thermal sensitivity of commercial detonators

by Karl R. Becker

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  • 32 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in [Washington] .
Written in English

    Subjects:
  • Detonators.

  • Edition Notes

    Includes bibliographical references.

    Statementby Karl R. Becker, John C. Cooper, and Richard W. Watson.
    SeriesReport of investigations - Bureau of Mines -- 8085, Report of investigations (United States. Bureau of Mines) -- 8085.
    ContributionsCooper, John C., Watson, Richard William, 1927-, United States. Bureau of Mines
    The Physical Object
    Pagination17 p. :
    Number of Pages17
    ID Numbers
    Open LibraryOL22418929M

    Detonators & Igniters. Detonator application is highly dependent upon environmental conditions, gun type and wellbore characteristics. JRC has a wide variety of detonators ranging from simple resistor types to the RF-Safe RED® detonator. RF-Safe detonators have a high immunity to radio signals, cellular phones and stray voltages generated by. @article{osti_, title = {LLNL small-scale drop-hammer impact sensitivity test}, author = {Simpson, L R and Foltz, M F}, abstractNote = {Small-scale safety testing of explosives and other energetic materials is done to determine their sensitivity to various stimuli including friction, static spark, and impact. This testing is typically done to discover potential handling problems for.

    Consequently, sensitivity on impact of bridge wire, primary and secondary explosive charge, thermal stability, resistance to water and resistance to hydrostatic pressure of electrical detonators. An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture containing at least two.

    wwwetresearccom • 82 Sout I-5 est • lvarado,Texas • OE • F Detonators, Detonating Cords, Explosive Components Jet Research Center’s explosive components have been designed using sound engineering principles and test procedures and are manufactured or. ELECTRIC DETONATORS a) Instantaneous Elect Det b) “L” Series Millisecond Delay Det – Lower shock sensitivity, friction, impact. END. Title: Microsoft PowerPoint - Types of Explosives Author: naj Created Date: 3/8/ PM File Size: 2MB.


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Impact and thermal sensitivity of commercial detonators by Karl R. Becker Download PDF EPUB FB2

Impact and thermal sensitivity of commercial detonators (OCoLC) Online version: Becker, Karl R. Impact and thermal sensitivity of commercial detonators (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: Karl R Becker; John C Cooper; Richard W Watson.

Impact and thermal sensitivity of commercial detonators Paperback – January 1, by Karl R. Becker (Author) See all formats and editions Hide other formats Author: Karl R.

Becker. In the thermal sensitivity trials, the detonators were heated from ambient to deg c at an average rate of about Deg c/min. and thereafter at Deg c/min until they exploded; the explosion temperatures observed ranged from deg to deg c. IMPACT, THERMAL, AND SHOCK SENSITIVITY OF MOLTEN TNT AND OF ASPHALT-CONTAMINATED MOLTEN TNT by Richard J.

Mainiero and Yael Miron U.S. Department of the Interior Bureau of Mines, Pittsburgh Research Center P.O. BoxPittsburgh, Pennsylvania, USA Solin S.

Kwak, Lewis H. Kopera, and James Q. WheelerFile Size: KB. A detonator, frequently a blasting cap, is a device used to trigger an explosive tors can be chemically, mechanically, or electrically initiated, the latter two being the most common.

The commercial use of explosives uses electrical detonators or the capped fuse which is a length of safety fuse to which an ordinary detonator has been joined. Electrostatic sensitivity, strength, and no-fire current of short-delay impact sensitivity, resistance to trac­ commercial detonators, TIL values ranged from 16 mJ to mJ in P-P mode, and 36 mJ to J in P-C mode.

The energies referred to are stored energy in the ca­ Author: T. Bajpayee, Richard J. Mainiero, J. Edmund Hay. commercial explosives can be grouped into two main categories according to their sensitivity, detonator sensitive explosives and blasting agents.

Some explosives with very high sensitivity, such Impact and thermal sensitivity of commercial detonators book pure nitroglycerin or dynamite, can be detonated by mechanical impact or friction. The sensitivity of an explosive has other operational implications.

The Detonators is the first full accounting of a crime and a cover-up that resonate strongly in a post-9/11 America. And much of the atmosphere and rhetoric in play years ago remains eerily similar to discussions surrounding national security and immigration today/5(30).

This book is the most comprehensive up-to-date work on all aspects of the clinical applications of this fascinating imaging technique.

It contains information on the very latest developments in the field, as well as numerous superb illustrations. The Detonators by sports journalist Chad Millman is one of the better books about German sabotage in the United States in the years before America became a belligerent in the First World War.

The destruction of Black Tom, a spit of land in New Jersey on whose piers munitions were loaded for the British and French customers/5. inside back cover of this book.

_____ The projected cost of the OSHNC program for federal fiscal year – is $13, Federal funding provides approximately 37 percent ($4,) of this total. Printed 3/98, 2M Acknowledgments A Guide to Radio Frequency Hazards with Electric Detonators was prepared for the North.

Physical Form 3 • Cartridged explosive: Here the explosive is in the form of cylindrical package, enclosed in paper or polythene tubings (flexible or rigid). • Pumpable explosives (bulk explosives): Here the explosive is in the form of a flowy material and is capable of being pumped, augured, or Size: 44KB.

commercial explosives ranges from to g/cc. For free running explosives, the density is often specified as the pounds of explosives per foot of charge length in a given size borehole.

With few exceptions, denser explosives give higher detonation velocities and pressures. Density is an important consideration when choosing an explosive. Sensitivity of explosives is the degree to which an explosive can be initiated by impact, heat, or friction.

Sensitivity, stability and brisance are three of the most significant properties of explosives that affect their use and application. All explosive compounds have a certain amount of energy required to initiate.

If an explosive is too sensitive, it may go off accidentally. The most important property of commercial HE is their impact sensitivity. The data obtained from sensitivity tests play a fundamental role in decisions on the HE applicability in general or any possible uses.

Currently, there have been a lot of impact sensitivity tests of. The shock sensitivity of the pressed solid explosive 1,3,3-trinitroazetidine (TNAZ) was determined using the embedded manganin pressure gauge technique.

At an initial pressure of GPa, pressure buildup (exothermic reaction) was observed after ten μs. At 2 GPa, TNAZ reacted rapidly and transitioned to detonation in approximately 13 mm. B- detonators with no sensitivity Electric detonators are used for blasting on surface work and in underground coal mines, on dry and wet grounds.

They are not to be used in air-methane and explosive coal dust environment. The accuracy of delay times eliminates any overlap and contributes significantly to better breakage of materials and File Size: 1MB. The instrument described here has the capability of heating the samples from ambient to °C prior to impact.

The thermal impact sensitivities of PETN, TATP, HMX, and silver azide (AgN 3) as a function of temperature are obtained. The phase transition of HMX can clearly be observed by a significant decrease in the impact height in situ.

Introduction to Explosives FOR OFFICIAL USE ONLY C4: Analysis and Trends U.S. manufactured so likely to be found in countries where the U.S.

has military connections A preferred terrorist explosive – Used in U.S.S. Cole and Bali nightclub bombings – Recommended in Al-Qaeda’s traditional curriculum of explosives training. Thermal detonators are grenade-like weapons that pack tremendous explosive power into a small sphere, and are used by bounty hunters and military forces such as the Empire’s stormtroopers.

Cad Bane used thermal detonators during his assault on the Senate Building; a generation later, Princess Leia threatened Jabba the Hutt with a thermal detonator while disguised as the Ubese hunter Boushh. Determination of sensitiveness to impact One hundred detonators have been prepared for testing of sensitivity to impact.

Half-second detonators were tested, no. 2, PSED-AL, "Pobjeda" Goražde, BiH. Total charge of a detonator is 1 g, composed of mg of initiation charge - led azide and mg (in two.HIGH-TEMPERATURE EBW DETONATOR. I. by.— L. A. Carlson, M. D. Coburn, and R. H. Dinegar ABSTRACT A h~gh-temperature resistant exploding bridgewire detonator is described.

The explosive is BTX, which shows no exotherm below the melting point °C, and is stable in vacuum stability tests at a temperature exposure of at least °c for 90 Size: KB.Thermal detonators, while being grenades, are also strong enough to be used as demolotion charges with enough force to blast a hole through 2 meters of permacrete (citation needed) The SWEGWT states that the standard Imperial thermal detonator has a blast radius of 5 meters, with larger grenades having lethality ranges of 20 and even meters.