Blasting accessories

McAdam Westwater(1958), 9-10 (Detonators, historical) Chapter 5, "Blasting Accessories" pp 51-2 (Safety fuse) 52-3 (Plain detonators, including ASA-Tetryl and ASA-PETN) 52-9 (Electric detonators) 54 (Fusehead) 59 (Electric powder fuses) 59-60 (Detonating fuses) 60 (Detonating... 

The above represent accessories which do not directly perform blasting operations, but which are essential for the efficient and safe use of blasting explosives. For the explosives industry and for the user they are as important as the blasting explosives themselves. 

The blast resistance of conventional doors is generally limited by the rebound capacity in the unseating direction. A conventional unreinforced hollow metal door with a cylindrical latch may be adequate to withstand a rebound force of 50 psf (2.4 kPa). Door with a mortised latch may be adequate for a rebound force of 100 psf (4.8 kPa). If the blast pressure exceeds this, other alternatives may be considered. These include placing interior or externa barrier walls, or installation of blast resistant doors and frames. Unlike conventional doors, blast doors are typically provided as a complete assembly including the door, frame, hardware and accessories. This is because all the components are dependent on each other to provide the overall blast resistance. Refer to Chapter 9 for performance requirements and design details for blast resistant doors. 

In such huge tanks, since the area to be rubber lined is more than 2000 sq meter including pipes and fittings, manhole flanges and blind flanges and other accessories, the total area is sand blasted, primer... 

Demolition Sled, M3 A boatlike sled, 12 ft in length 5 ft wide, manufd for the Army from fiberglass by Martin Co, Baltimore, Md, to carry expls and to blast a safe path thru mine fields in a matter of minutes. The sled is divided into three sections. The front section contains a 2-ft long Jato rocket attached to a linear charge of a plastic expl coiled in a center section. The rear section carries accessories such as a firing towing cable and tools. The fully loaded sled weighs ca 3000 lbs. It can be towed over land or water and behind tanks or other tracked vehicles... 

Data collection. Two data sets are used to demonstrate the multiscale cluster analysis method and have been kindly provided by Dr. Roy Goodacre at Institute of Biological Sciences. University of Wales, Aberystwyth [64,65]. Ten microlitre aliquots of bacterial suspensions were evenly applied onto a sand-blasted aluminium plate. Prior to analysis the samples were oven-dried at 50°C for 30 min. Samples were run in triplicate. The FT-IR instrument used was the Bruker IFS28 FT-IR spectrometer (Bruker Spectro-spin, Banner Lane, Coventry, UK) equipped with an MCT (mercury-cadmium-telluride) detector cooled with liquid Ni. The aluminium plate was then loaded onto the motorised stage of a reflectance TLC accessory. The wave-... 

For medium-sized foundries producing up to 2000 tonnes/month of good castings, the hot blast cupola is difficult to consider, in particular because of the large investment it requires. In these instances, the cold blast cupola prevails for some types of production. The hot blast cupola remains the most widely applied melting device for mass production foundries, e g. for parts for the automobile industry, centrifugal casting, road accessories. 

Explosives manufacturers produce myriad initiating devices and initiation systems that are suitable for a host of diverse applications. This product diversity allows the blaster to select the most effective and safest means of initiating a blast. Always remember—it is the responsibility of the blaster in charge to ensure that all explosives products selected for a particular job, including primary explosives, boosters, initiation systems, and accessory equipment, are mutually compatible and wiU function properly and safely when used together. ... 

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