Booster sensitivity test

As has been mentioned already, the sensitiveness to influence is lower when media other than air are used. There are tests specially designed for using wax as a barrier, such as the wax-gap test of Spencer Chem Co described in Vol 1 of Encycl, p A354, footnote c and the booster sensitivity test described in Vol 1, p VIII Other methods for detg sympathetic detons include  

Booster-Gap Explosive Sensitivity Test of Cole Edwards, described in detail in USP 2832213(1958) (Ref 17). It was claimed to be more reliable and less ex. pensive than the card test (See after card-gap test ) and the three-legged table test, described here after shock-pass-heat-filter test . The booster-gap test serves for evaluating shock sensitivity of liquid explosives. It includes a set of snug-fitting telescopic cardboard tubes (ca 1 inch diam) and a cylindrical wooden block for holding the electric blasting cap, Tetryl booster pellet, circular spacer cards, and the cup with liquid explosive (to test) fit compactly in the cardboard tubes when 

A steel plate ca 3/8 inch thick is used to cover the cup. The cup for noncorrosive liquids is made from galvanized 1-inch welded steel pipe 3 inches in length with a brass disk 0.0015-inch thick attached at the bottom. For corrosive liquids, the pipe is coated inside with Teflon and the bottom is Teflon tape 0.003-inch thick. It has been found that a Teflon bottom attenuates the booster shock somewhat less than does brass. The sensitivity value for a given liquid explosive is taken as the number of 10 mil cellulose acetate spacer cards required for a gap at which the liquid explosive detonates in 50% of the test shots 

Booster Sensitivity Test is briefly described in Vol 1 of Encycl, p VIII 

In this test the confined acceptor charge is separated from the Tetryl donor by a stack of plexiglas cards, the number of which is a measure of the gap thickness. 

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Trauzl Test (5-6) Plate Dent Test (6) Detonation Rate (6) Booster Sensitivity Test (6) Calorimetric Tests (6-7) 60-mm... 

Wax Gap Test. See Vol 1 of Encycl, p VIII under "Booster Sensitivity Test and under Ammonium Nitrate, p A354, Note c... 

Detonation (or Explosion) by Infuluence or Sympathetic Detonation. Its definition and description are given in Vol 1, p X and in Vol 4, pp D395-R to D398-R. Its tests are listed on pp D398-R to D402-L and also under Booster Sensitivity Tests. 

Booster Sensitivity Test Min wt of Tetryl pellet at sp gr 1.41 to produce 50% detons is lOOg, with 0.67 wax spacer (Refs 22a St 29b) Brisance Plate dent test, about 9S% of TOT at sp gr 1.5. Lead block crushing — 40g of NGu placed on a block 67mm in diam produced a shortening of 7mm compared with 10.5mm for PA (Ref 6d, p 391 and Refs 22a St 29b)... 

Detonation by Influence or Sympathetic Detonation Tests (Transmission of Detonation at a Distance Test) (Aptitude a transmettre la detonation a distance, Essai or Coefficient de self-excitation, Essai, in Fr) (Detonationsiibertragung Probe ox Schlagweite Probe, in Ger) (Determinacion de la sensibilidad a la iniciacion por simp ana, in Span) (Distanxa di eaplosione persimpatia, prova, in Ital) include the following methods Booster Sensitivity Test(qy) b)Four-Cartridge Test]Sce PATR 2510(PB 1612 i(1958),p Ger 521... 

Wax Gap Test is one of the Detonation by Influence testa(qv) and is similar to the Booster Sensitivity test(qv). The Wax Gap Test is described briefly under Ammonium Nitrate, p A354, Note c and in mote detail in Spencer Chemical Company, "Safety Data, Kansas City,Mo(I960)... 

Booster Sensitivity Test. See Vol l,p VIII. More detailed description was given by L.Goodman in Physical Testing of Explosives , Part III,OSRD... 

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