C Vacuum Stability Test

3 Calculation of Liberated Gas Volume. Calculate the gas vol in ml (at standard conditions) liberated in the test described in 4.4.5.2, using the values described by the symbols in 4.4.5.2 and 

3 General Safety Precautions. The preparation and handling of the items covered by this specification, and the subassemblies thereof, involve hazardous operations and therefore require explosives safety precautions. Use of this specification will not be construed as to relieve the contractor or manufacturer of responsibility for the safety of his operations. Listed below are certain minimum provisions which a contractor or manufacturer (who prepares the item covered) should observe in order to fulfill his responsibility for safety. At Bureau of Naval Weapons, Navy Department, and other government plants, these provisions are mandatory. Such other warnings and precautions, pertinent to the operational effectiveness or safety during preparation of the specified items, are included in detailed technical requirements of the specification 

1 All handling and bathing operations should be conducted in a neat and orderly manner 

3 The exposure of explosive materials and related parts should be so controlled as to minimize the absorption of moisture from the atmosphere or other sources during handling and batching operations 

5 Proper care must be exercised at all times to protect personnel from accidents, fires, or explosions, and to limit damage to equipment and loading areas. In this connection, the precautionary measures in the following paragraphs should be observed 

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In this method the soln of titanous sulfate is standardized against p-nitraniline 6) 120° C Vacuum Stability Test. Using a 2.3 g dry sample and adjusting the apparatus described in Vol 1 of Encycl, p XXVI to 120°, determine the amt of gas evolved in 40hrs of heating. More detailed description of the test is given in MIL-STD-286A (1961). Method 403.1.2 and in PATR 3278(1965), pp 19-22 Fig 15... 

Hercules Powd Co Monthly Progress Rept 13 (Sept 1949) (Contract NORD 9925)(Compd investigated for possible use as a primary expl, however, its water solubility thermal stability were considered unsatisfactory. Its impact sensitivity with BurMinesApp with 2kg wt was 5cm and the 100°C Vacuum Stability Test value exceeded the capacity of the app in 48 hrs)... 

NJ. The following tests are described Impact Test with PicArsn Apparatus (pp 2 to 4 with Figs 1, 2, 3 4 on pp 32 to 35) Impact Test with USBurMines App (4 to 7 with Figs 5, 6 7 on pp 36 to 38) Modified Impact Tests for Liquid Explosive Made with BurMinesApp and with PicArsnApp (7) Explosion Temperature Test (7 to 8 with Fig 8 on p 39) Decomposition Temperature Test (8) Sensitivity to Initiation as Determined by Sand Test (9—II with Figs 9, 10, 11 12 oh pp 40—3) Modified Sand Test for Liquid Explosives (12—14) Electrostatic Sensitivity Test (14—15 and Figs 13 14 on pp 44 45) Brisance by Sand Tests (16—17) Initiation Efficiency by Sand Test (17) Stability Tests, which include 75°C International Test (18) 82.2°C KI Test (19) 100° Heat Test (19) 90°, 100° 120°C Vacuum Stability Tests (19—22 and Figs 15, 16 17 on pp 46—8) 65.5°C Surveillance Test (22—3 and Fig 18 on p 49) ... 

The stability of TMETN is not very satisfactory as indicated by the vacuum stability and heat tests. In the 100°C heat test, a 2.5 percent weight loss is reported in the first 48 hours and 1.8 percent in the second 48 hours. No explosions occur in the first 100 hours. In the 100°C vacuum stability test, 1.9 cubic centimeters of gas are evolved in the first 40 hours. At 25 C TMETN is hygroscopic to the extent of 0.07 percent with 90 percent relative humidity and 0.14 percent at 100 percent relative humidity. 

The 150°C vacuum stability test indicates HMX is comparable to TNT in stability, with test values of 0.6 and 2.5 milliliters of gas evolved. The 100°C heat test loss in the first 48 hours is 0.05 percent and in the second 48 hours 0.03 percent. No explosions occur in 100 hours. At 30°C and 95 percent relative humidity, HMX is nonhygroscopic. In the LLNL reactivity test, less than 0.01 cubic centimeters of gas are evolved. The... 

When heated in vacuum EDDN vaporizes and condenses without noticeable decomposition. When heated at 10 millimeters of pressure in an atmosphere of nitrogen or air, autocatalytic decomposition occurs between 230°C and 360°C. EDDN is hygroscopic to the extent of 1.24 percent at 90 percent relative humidity and 25°C. In the 120°C vacuum stability test, five milliliters of gas are evolved. Because of poor solubility, hygroscopicity, and acidity characteristics, EDDN is not very satisfactory for use as a military explosive and is an inferior substitute for TNT. 

C vacuum stability test Maximum, 5.0 milliters of gas in 40 hours. 

In the 100°C heat test, HNS loses less than 1 percent weight in 48 hours. Less than one cubic centimeter of gas is evolved in the 100°C vacuum stability test. Figures 8-48 and 8-49 show the DTA and TGA curve for HNS, respectively. 

Acidity or alkalinity PETN granulation applicable to pentolite manufactured by the coprecipitation method Through sieve number Percent, minimum Percent, maximum 100°C vacuum stability test... 

The sand test results indicate a brisance of 112 percent of TNT. The detonation velocity is 6,630 meters per second for a density of 1.65 grams per cubic centimeter and 6,800 meters per second at a density of 1.76 grams per cubic centimeter. By the ballistic mortar test the power of PBX is 146 percent of TNT. For the 100°C vacuum stability test, 0.6 cubic centimeters of gas are evolved in 40 hours. The energy of the air blast is 138 percent of TNT and the energy of the water blast is 143 percent of TNT. 

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