Testing Gallery

Power, % blasting gelatine Rg. 7.2. Effect of initiation on gallery testing. [Pg.80]

In designing P4 explosives, it must be remembered that the overall strength is limited by the requirement of the gallery test, which is even more severe than that employed for P3 explosives. It is, therefore, necessary to include even greater proportions of cooling salts into the explosive than is the case with the P3 class. [Pg.86]

The particular hazard of firedamp ignition relates to the circumstance when a hole fired early in the round breaks the coal at another hole and exposes the explosive before it detonates. This is simulated by firing gallery tests similar to those described above, but with inverse initiation of a... [Pg.87]

Ballistic Pendulum and Ballistic Mortar Tests (86-92) Ballistic Pendulum of Schmidt (93) Steel Plate Test (94) Detonation by Influence (95-6) Gallery Test for Permissible Explosives (97-8) and Examination of Flames (98-100)... [Pg.326]

N. E. Hanna et al, US Bur Mines RJ No 5463 (1959) CA 53, 14517 (1959). The effect of 0, 3.6, 6.6 9.5% NaCl on the incendivity of permissible explosives was studied by the Bruceton up-and-down technique in gallery tests. The study showed that the addn of relatively small quantities of NaCl tends to reduce but does not eliminate ig-... [Pg.286]

Kast s method (82—3) Swedish test for use in mining (86) Ballistic pendulum and Ballistic mortar (86—93) Ballistic pendulum of Schmidt (93) Ballistic pendulum for measuring impulse and shattering (93—4) Steel plate breakage test (94-5) Gap test (95-6) Gallery tests for... [Pg.352]

Chapter 6, 1 Assessment of Explosives", which includes Power or Strength (pp 65-8) Velocity of Detonation (69-72) Sensitiveness, to Friction and to Impact (72—6) Stability on Storage (76—8) Fume Test (78—9) and Miscellaneous Tests, such as for. Brisance and Speed of Gelatinization of NC (79—80). Chapter 7 Gallery Testing of Permitted Explosives (85—9)... [Pg.353]

The Buxton Test, often called the Home Office Test, was introduced in 1932 and is at present the British Official Gallery Test. [Pg.463]

Gallery tests Charge limit Charge limit Charge limit Charge limit... [Pg.466]

A new modern experimental gallery (modelled on the one at Buxton in Great Britain) was constructed in 1927 and the explosives which passed the gallery test with the charge of 400 g were designated Permitted Explosives (Kentei Bakuyaku). [Pg.471]

Duxite. One of the older (1914) British permitted explosives which. passed the Rotherham Gallery Test . It consisted of NG 31—33, CC (collodion cotton) 0.75—1 5,... [Pg.475]

Encyclopedia of Explosives, PATR 2700, Vol 1(1960), pp Vll—VIII (Ballistic Pendulum Test) 4) Ibid, Vol 3(1966), p C372 (Rotherham Gallery Test)... [Pg.475]

Dope-Size Test. It has been recognized that the granulation of the solid ingredients or an expi has an appreciable effect on its expl characteristics a considerable variation might have as much effect as a change in chem compn, and so may cause failure in gallery tests for permissible expls. The "dope-size test" consists of treating a sample of expl (under a hood) with carbon bi-... [Pg.514]

Note Buxton Test is a gallery test for coal mining expls conducted in GtBritain. It is briefly described by Marshall 3(1932), 186—87 and is listed in Vol 2 of Encycl, p B394-R... [Pg.621]

Ref Belgranof 1952), 174 Afror Tyne Powder. One of the older Brit "permitted expls NG + NGc 9 AN58, MNN 1, wood meal 9, NaCl 22 water %. It passed the Buxton gallery test and its swing was 2.52, vs 3.27 for Gelignite... [Pg.109]

Buxton Test. A gallery test for "Permitted expls conducted between WWI WWII at Buxron, England... [Pg.394]

The presently used Buxton Test, known also as the Home Office Test, was introduced in 1932 as the British Official Gallery Test and it is still used for ordinary permitted expls. After introduction of new types of expls, such as "sheathed (in 1934) and EqS (equivalent to sheathed) (in 1949) some modifications and additions were considered to be desirable and a new testing procedure was established in... [Pg.156]

British gallery tests for "unsheathed expls are conducted as follows ... [Pg.156]

The following permissibility gallery tests are required for newly submitted expls, by Bur Mines regulations listed in Schedule I-H (Ref 45) ... [Pg.158]

Note Accdg to Dr. Van Dolah (Ref 47), the up-and-down method, first developed in 1944, has been most commonly used for the impact sensitivity test of expls, but can be applied to many other test methods, including the gallery tests... [Pg.159]

Other permissibility tests, which are not gallery tests, are briefly described at the beginning of this section, under item A -Chemical Tests and item B-Physical Tests (See also Ref 45, pp3 4)... [Pg.159]

The gallery tests listed below are required for field samples. These are of a regularly manufd and previously approved brand of permissible expls removed by the Bureau s representative from a mining company magazine or directly from the field. These samples are collected at any period after acceptance as permissible explosives in order to determine whether they continue to conform to the basic specifications of BurMines (Ref 47)... [Pg.159]

Gallery test 4. The sample must pass 5 shots (instead of 10 required for newly submitted samples) with a tamped but unstemmed chge of 1.5lb (680g) (Rer45, p5 Ref 47)... [Pg.159]

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