Question

Resettable Detonator - Project Design - Resettable Detonator Resistorized Resettable Detonator- Needed Resettable Rig Environment Detonator (RED)- Wanted Drawing Paragraph ont Resettable Detonator - Resistorized Desizn x circuit (Test i) that can be used to simulate the R and downhole. . It need to comply with the following conditions: .Condition 1: . Size-See Pictures-Figure 1 and 3 .Condition 2: anidrdess hanato ches tor buad. t. lf ire at 800mA with a staticresistance measurement of .See Table 1 Condition 3: . When appropriate current is applied we want to see an increase in current on the Shooting panel and current break. Condition 4: . Must be reset manually reset after appropriate fire current has been achieved at the jig Notes Resettable DetonatorTable 1 A-140 F &Block Austin Powder Company CONSTRUCTION FEATURES A-140 F Detonator Nominal Resistance: 57 Ohms No Fire Current: 200 milliamps All Fire Current: 800 milliamps Mninum Firing Current (epprox) Resisters in Series wih Antistatic sleeve and spark gap protect against static electricity. insulated 22 gauge four feet long copper Glock with Retaining Wire leg wires Notes Comments Resettable Detonator-Pictures Paragraph Drawing Font Resettable Detonator - RED : Design a circuit (Test jig) that can be used to simulate the "Rig Environment Detonator (REDJ" for checks in the Classroom and downhole. . It needs to comply with the following conditions . Condition 1: . Size-See Pictures-Figure 2 Condition 2: 325 ydfrewith a resistance reading between 1 Mohm and 8.5 Mohm in 30 RED detonators fine ty oltage of 4 seconds. A maximum voltage of 450 vdc may be applied . See Table 2 . See RED Detonator Design- -This is an early simplified representation. An actual PC board is provided. The actual board can be acquired from JRC and used in the test jig. This leaves only the resettable part to be developed. Presently we can just use a resistor Condition 3: : Must be reset manually reset after appropriate fire voltage has been achieved at the jig. . Condition 4: Comments Notes s -.-Convert to SmartArt-11台へへ{ Shape Effects. MT4 . Styles Ed Drawing Paragraph Font BLOCK RED Detonator -Table 2 PREASSEMBLY CHECK OF RED Block DETONATOR GUN JET RESEARCH ƠNTER Using an approved blasters digital multi-meter (P/N 100009455) set the meter to R x 20M. A gradual rise in resistance is seen with a reading between 1 MO 8.5 MO in 30 seconds 1 IMPORTANT NOTE: The RED Block detonator is a directional firing device and must be installed onto the detonating cord and within the perforating gun facing the correct direction in order for the detonating cord to | function property Slide the end of the RED® Block detonator with the wire leads and RED booster utput onto the detonating cord and facing the shaped charges to be fired. "DUMP FIRING" METHOD: Preset the shooting panel voltage knob to deliver 325Voc positive or negative at the firing head. Mark the shooting panel at the 325Voc position; retum to the zero position. When ready to fire the device turn the knob to the mark on the shooting panel, press and hold the DUMP button, engage the firing switch, and hold for a minimum of 4 seconds. Repeat dump fire at a higher voltage level if necessary to fire the detonator and/or switch the shooting polarity if possible Jet Research Center, 8432 South 1-36W, Alvarado, Texas 76009 D00449992 Phone: 1-800-451-5403 or 1-817-761-2000 Notes Align Text Arrange Quick ˙-Convert to SmartArt. 11a-n { } ☆ CPShape Effects-l, sel · 町

Answer 1

A detonator, frequently a blasting cap, is a device used to trigger an explosive device. Detonators can be chemically, mechanically, or electrically initiated, the latter two being the most common.

The commercial use of explosives uses electrical detonators or the capped fuse which is a length of safety fuse to which an ordinary detonator has been crimped. Many detonators' primary explosive is a material called ASA compound. This compound is formed from lead azide, lead styphnate and aluminium and is pressed into place above the base charge, usually TNT or tetryl in military detonators and PETN in commercial detonators.

Other materials such as DDNP (diazo dinitro phenol) are also used as the primary charge to reduce the amount of lead emitted into the atmosphere by mining and quarrying operations. Old detonators used mercury fulminate as the primary, often mixed with potassium chlorate to yield better performance.

A blasting cap is a small sensitive primary explosive device generally used to detonate a larger, more powerful and less sensitive secondary explosive such as TNT, dynamite, or plastic explosive.

Blasting caps come in a variety of types, including non-electric caps, electric caps, and fuse caps. They are used in commercial mining, excavation, and demolition. Electric types are set off by a short burst of current conducted from a blasting machine by a long wire to the cap to ensure safety. Traditional fuse caps have a fuse which is ignited by a flame source, such as a match or a lighter.