SK289045B6 - Deactivation device for explosion-proof disposal of pipe bombs and method of placement to pipe bomb - Google Patents

Abstract

The device consists of a plastic explosive (1), a casing (2), a detonator (3) and a holder (4) made of wire enabling positioning against a tube bomb. The appropriate geometry of the plastic explosive (1) located in the casing (2) will, after initiation by the detonator (3), produce a directed flow of energy, resulting in the subsequent tearing off of the cap of the tube bomb. Depending on the geometry of the cavity in the plastic explosive (1), in addition to creating a cumulative piercing beam, it is also possible to create a hammer effect that has a surface effect. The sharper the apex angle of the cavity in the plastic explosive (1), the more pronounced the beam and the smaller the surface effect. The invention can be used in the disposal of improvised explosive devices in such a way that they do not detonate, thus enabling the following forensic examination of the components of improvised explosive devices to reveal tracks left by the offender.

Description

The field of technology

The invention relates to the non-explosive disposal of improvised explosive systems, which are structurally made in the shape of pipe bombs. The invention can be included in the field of ammunition and work with explosives.

Current state of the art

Improvised Explosive Devices (IEDs), including pipe bombs, are constructed mainly from a casing, an explosive, and an initiator. The casing of the pipe bomb is made of a metal pipe with screw caps on the ends. Military, industrial, home-made explosives, black powder, pyrotechnic composition and the like can be used as explosives. Different sources can be used as an initiator depending on the explosive used. Depending on the desired result, the extent of the damage, individual parts of the NVZ are selected. Disposal of hazardous waste is currently carried out depending on the size of hazardous waste and the place of storage of hazardous waste using destructive and non-destructive procedures and appropriate equipment. The procedures and equipment used today are blasting the NVZ with a water jet, a shotgun, applying explosives to the NVZ, and conducting a controlled explosion. In the case of pipe bombs, blasting with a shotgun and a water jet is ineffective, and applying a high explosive will cause the pipe bomb to explode, which will destroy all traces left by the perpetrator and subsequently cause damage to property in the area of the explosion. There are products available on the market that use the accumulation of a water jet by explosion for the required purposes of disposal of NVZ in cars.

The geometry of the explosive which produces the desired effects for disposing of a pipe bomb, without the metal insert to produce the piercing effect which is the subject of the invention, has not been published.

The essence of the invention

For working with explosives, it is necessary to choose such explosives so that the person handling them is not at risk and they are usable for the chosen target. For the construction of a deactivation device for the non-explosive disposal of pipe bombs, it is necessary to use an explosive with a detonation speed greater than 6,500 m/sec., which will create a sufficient directed effect with the appropriate geometry of this plastic explosive and its location relative to the NVZ.

The essence of the invention is the creation of the required geometry of the plastic explosive, which, after initiation by the detonator, will produce a directed flow of energy and subsequent perforation of the pipe bomb and tear off the cap. The goal of the geometric adjustment of the explosive is the concentration of the energy of the gas flow after the explosion, which is caused by the geometry of the cavity in the mass of this explosive. The pressure wave caused by the explosion tends to copy the surface of the explosive, thus it concentrates in the focus of its cavity and creates a beam of gases with the speed and parameters of the created beam geometry. Depending on the geometry of the cavity, it is possible to create a second effect in addition to creating a cumulative penetrating beam, i.e. j. a hammer effect that has a surface effect. The sharper the apex angle of the cavity in the plastic explosive, the more pronounced the beam and the smaller the surface effect. The cavity can have the shape of a hemisphere, a hyperboloid, a cone with the apex in the axis of the cylinder of the deactivation device for disposal of pipe bombs.

To increase the penetration effect, the surface of the cavity can be reinforced with a copper, steel, bronze element, which affects the parameters of the created beam. In the mentioned proposal, at explosive velocities above 6,500 m/sec. for the purpose of disposing of the pipe bomb, the metal insert is not rubbed.

Advantages of the invention:

• a portable, small device that can be improvised at the site where the pipe bomb is found, • when using a stable, industrially produced plastic explosive with the required parameters, it can be prepared anywhere and at any time, • the piercing beam and hammer are guided without the use of a metal insert, • the non-explosive deactivation of the pipe bomb allows preservation of forensic traces left by the perpetrator on deactivated pipe bomb components.

Disadvantages of the invention:

• to handle explosives, it is necessary to have knowledge, skills and knowledge about the explosive used. It is advisable to use an industrially produced plastic explosive with thermal and chemical stability for the deactivation device for disposing of pipe bombs, • use an explosive with a minimum detonation speed of 6,500 m/sec.

Overview of images on drawings

In fig. 1 shows a section of the deactivation device for non-explosive disposal of pipe bombs.

Examples of implementation of the invention

Example 1

The deactivation device for the non-explosive disposal of pipe bombs consists of a plastic explosive 1, a package 2, a detonator 3 and a wire holder 4. Plastic explosive 1 is formed by a cylinder, preferably with a base of 30 mm and a height of 60 mm, on the lower side of the cylinder with a cone starting at the lower edge of the cylinder, preferably with an apex angle of 70 degrees, and on the upper edge ending with a cone, preferably with an apex angle of 70 degrees. With a height/length ratio of 2:1, the cylinder of plastic explosive 1 achieves the greatest penetrating effect. A preferred embodiment can also be a plastic explosive 1 formed on the underside of a cylinder with a cone starting at the lower edge of the cylinder with an apex angle of 65-75 degrees and on the upper edge ending with a cone with an apex angle of 65-75 degrees. An explosive with a detonation speed greater than 6,500 m/sec is chosen for the construction of a deactivation device for the non-explosive disposal of pipe bombs, e.g. Semtex-1A with a detonation speed of 7,200 m/sec. Packaging 2 is made of plastic, e.g. polyethylene with a thickness of 2 mm and describes the external shape of the plastic explosive 1. In the package 2, there is an opening on the top side for axially central insertion of the detonator 3. For positioning against the NVZ, the package 2 is equipped with a wire holder 4, which can be bent to the desired location relative to the NVZ .

Example 2

A method of attaching a deactivation device to a pipe bomb is described where the casing of the pipe bomb is formed from two inch iron waterworks pipe with ten metric threads for screwing on the cap. Semtex-1A plastic explosive is shaped with the geometry described in Example 1 and shown in Fig. 1. The package 2 of the non-explosive deactivation device is made of polyethylene with a thickness of 2 mm. The deactivation device for the non-explosive disposal of pipe bombs has its axis oriented at an angle of 45° against the axis of screwing in the cap of the pipe bomb. The distance to the cap is 30 mm. Plastic explosive 1 is subsequently detonated by an initiator - detonator 3 type 0-ZB-S. After detonation, the cap of the pipe bomb will be torn off.

The examples of implementation describe the most suitable and effective implementation of the deactivation device for non-explosive disposal of pipe bombs and the method of placement to the pipe bomb. The invention can also be implemented in other dimensions and angles producing the same effects. It will be apparent to those skilled in the art that various changes may be made in the embodiment of the invention without departing from the scope of the invention.

Industrial applicability

The deactivation device for the non-explosive disposal of pipe bombs and the method of placement to the pipe bomb can be used in the disposal of IEDs so that they do not detonate, thereby enabling the subsequent forensic examination of IED components to detect traces left by the perpetrator.

Claims (1)

PATENT CLAIMS 1. Deactivation device for the non-explosive disposal of pipe bombs, consisting of a plastic explosive (1), which has a cover (2) located on its entire surface with an opening on the upper side, in which a detonator (3) is located axially centrally 5, where on the cover (2 ) a holder (4) is attached, characterized by the fact that the plastic explosive (1) has a minimum detonation speed of 6,500 m/sec. and is formed by a cylinder with a ratio of height to length most preferably 2:1, while the lower side of the cylinder has the shape of a cone starting at the bottom edge of the cylinder with an apex angle most advantageously 70 degrees and ending at the top edge of the cylinder with an apex angle most advantageous 70 degrees. 10 2. The method of placing the deactivation device for the non-explosive disposal of pipe bombs to the pipe bomb, characterized by the fact that the deactivation device for the non-explosive disposal of pipe bombs is oriented with its axis at an angle of 45° against the screwing axis of the pipe bomb cap and at a distance of 30 mm with respect to the pipe cap bombs.