Primary expls, initiating efficiency

Detonators) XXII (SENSITIVITY TO FLAME, SPARK, ELECTROSTATIC DISCHARGES, ETC) XXIII [Sensitivity to Initiation by Primary (Initiating) Explosives, Detonators and Boosters, Tests] XXIV (Small Lead Block Compression Test is described in Vol 3 of Encycl, p C493-L) XXIV (Small Lead Block Expansion Test is briefly described under Trauzl Test) XXIV (Sound Test for Detonators) XXIV (Strength of Detonators. See under INITIATING EFFICIENCY, p XVIII) XXIV (Surveillance Tests) XXIV (Taliani Test) XXV (Trauzl Test) XXVI (Vacuum Stability Test) p A2 (Abel s or Kl-Starch Test) p A573-L (Ball Drop Test for detg sensitivity of LA or other primary expls)... 

A modification of this test applicable to liquid expls is described in Ref 9> PP 9 11. The sand test may also be applied to detg the amt of LA and/or tetryl, that must be used as initiator or booster to insure that the sample crushes the max net wt of sand. This is designated as sensitivity to initiation test. (See also Initiating Efficiency of Primary Explosives by Sand Test.) Refs I)US BurMinesTechPaper 125(1916)... 

Initiating efficiency strength) of primary expls can be approx detd by firing a small chge(such as 1.0 g) in the cavity of a small lead block, such ss 100 mm in height and 100 mm in diam. For testing detonators in such block, a hole is bored in the block of the exact diam of the detonator and of such a depth that the top of the detonator is flush with the top of the black(Ref 5, P 106 Ref 5a P 666)... 

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