Hook for opening manholes intrinsically safe tip KNM-1-1000

Hook tip is pressure-tested with copper intrinsically safe KNM is made of rolled steel with a diameter of 10mm, the total estimated length of the hook is 1000mm. The tip of the hook is pressed with copper, the thickness of the copper layer is 2mm, the length of the copper layer is 100mm. The stem is painted with composite paint. Hook is used to open metal hatches communication wells in order to prevent sparking and the occurrence of fire and explosion. When opening manholes, latches, partitions, doors and other obstructive communications in closed non-ventilated volumes, a tool that excludes the formation of sparks and electrostatic discharges is used. Such tools include scraps with non-ferrous metal tips and hooks with a copper tip. LUM and LNL scraps with non-ferrous metal tips are used to open manhole covers of electrical telecommunications, sanitary and fortification structures, in order to prevent sparks from contacting the scrap tip with the hatch parts, which can result in the ignition or explosion of active gases present in the well cavity. The technology of connection of scrap tips with its shaft guarantees the all-season application of the tool. To avoid crushing of the working parts of the tool, it is not recommended to subject them to impact loads. In order to prevent corrosion, the metal surface of the scrap shaft is colored with composite paint. To prevent accidents when working with scrap with non-ferrous metal tips, careful application and strong fixation of the tool are recommended when performing manipulations. Hooks KNM with a tip with pressure-treated copper is used for opening hatchways of manholes of electro-telecommunications, sanitary and fortification structures, in order to prevent sparking at the contact of the hook tip with the hatch parts, which can result in the ignition or explosion of active gases present in the cavity of the well. The hook is made of a steel rod of circular cross section, the handle of the hook is of oval shape, located perpendicular to the bearing rod in the plane of the working part of the tool, the working part, namely the hook in the contact area with the parts of the hatches is pressed by copper and its end part is rolled. The technology of crimping the tip of the hook guarantees the all-season application of the tool. To avoid crushing of the working part of the tool, it is not recommended to subject it to impact loads. In order to prevent corrosion, the metal surface of the hook is colored with composite paint. In order to avoid accidents when working with a hook with a pressure-treated copper tip, careful application and strong fixation of the tool is recommended when performing manipulations. When opening manholes, latches, partitions, doors and other obstructive communications in closed non-ventilated volumes with scrap with non-ferrous metal tips LNM or LNL, preparatory work is carried out, namely: cleaning of the hatch seat and preliminary separation of the manhole from the mouth of the well, With the use of a hook for opening the CNM. After opening the hatch, it is imperative to check the cavity of the well for the presence of active and explosive gases with a gas meter, and if found, determine the cause of their presence and take measures to eliminate the causes and remove accumulated gases. To carry out work inside closed devices, tanks, wells, fireboxes and other similar objects, persons familiar with the rules and requirements for the safety of carrying out repair work inside the tanks, vessels, wells and furnaces are involved. Works inside closed devices, tanks, wells, fireboxes and other similar objects are dangerous, since people working in them can be exposed to a number of hazardous and harmful production factors. The main harmful and dangerous factors that can affect the inside of containers and other similar equipment are accumulation of carbon dioxide, high temperature, humidity and dust content of the air inside the tank, a low concentration of oxygen, the presence of fire and explosive substances, the possibility of electric shock. Provide safety measures installed for work in the tank, it is necessary during repair, inspection, cleaning, washing, cleaning of test passes, dough bins, flour storage silos, storage tanks for liquid components, and other containers in dough mixers and press shops, Baking and other industries; Repair inside the baking chamber; Repair of furnaces, cleaning of channels in the furnace compartments. Work inside the tanks is carried out in accordance with the "Safety Rules in the Gas Economy", approved by Gospromatomnadzor. Physically healthy persons of at least 20 years of age who have received special training in safety precautions are allowed to work inside closed containers. Performance of work inside closed containers is allowed only if there is a written permission (permit) issued by the shop manager to the responsible work manager before commencing work inside the tank. The name and position of the responsible manager shall be indicated in the admission; The composition of the brigade; The content of the work to be done; Necessary protective equipment; Rescue equipment; The length of the worker's stay in the tank and the procedure for changing it, as well as special security measures. Before the start of the work, the tank should be prepared for repair, released from the product and disconnected from the technological lines. Work inside the tanks should be carried out by a team (for less than 2 people): in silos - no less than 4 people; In sewerage wells - no less than 3 people. Before commencement of repairs, the person responsible for the work must check the reliability of the tank shutdown, appropriate instruments to analyze the air inside the tank and make sure that the contents of explosive and toxic substances are not permissible by the norms. In hot tanks it is also necessary to determine the temperature of the air. The content of carbon dioxide, methane is measured with the gas analyzer SHI-10. When carrying out work related to the supply of parts, materials and other items that may cause injury when falling, workers must use protective helmets. Work in containers with insufficient air exchange, as well as in the presence of harmful substances in them, the worker must perform in the hose gas mask PSH-1 (with natural air supply) or PSh-2 (with forced air supply), which is worn before going down. When a hose gas mask is used, the corrugated hose must go out to the outside of the container at least 2 m. The end of the hose (intake pipe) is fixed in the clean air zone. The understudy must constantly ensure that the hose is not bent, twisted or clamped with any object. Before descent into the apparatus or capacity, the worker is instructed, checks in the presence of the manager of work, the mask is fitted to the face, if necessary, he puts on a rescue belt with a signal rope, takes the battery-powered explosion-proof 12 volt light bulb and, without any objects in his hands, . Then he is given the necessary tool for work. The signal rope serves to pull out the person working in the tank. Its strength is systematically checked. The understudy should have a hose gas mask set, ready for use with a mask fitted over the face so that if necessary, he can quickly enter the danger zone to assist the victim. The descent of the worker into the tank is carried out with the obligatory presence of the person responsible for the production of work and observing the understudy. For tanks with upper and lower hatches, the workers are allowed to enter the tank through the lower hatch only. The length of the worker's stay in the container is set by the instruction for the production of work inside the tanks, depending on the conditions of the work performed in them. When working with a gas mask, the period of a one-time stay of a worker in a container should not exceed 15 minutes, followed by a rest in the fresh air for 15 minutes. For lighting in a vessel during the repair work, portable lamps with a voltage not exceeding 12 V are used, and for portable containers containing explosive substances portable lamps are used only in explosion-proof design. Often a floodlight installed on a tripod above the hatch is used to illuminate the tank. The used tools and equipment must exclude sparking (must be made of non-ferrous metal or non-sparking materials). These safety requirements apply to manual cleaning, cleaning and disinfection of process vessels. The work carried out in silos and bunkers has some specific features. For the descent of the worker into the silo, a special winch intended for lowering and lifting people must be used. Work in silos should be carried out by a team of 4 people: one - down, the second - working on the winch and two supervisors, one of which bleeds (chooses) the gas hose, the other bleeds the signal rope fixed at one end to the safety belt of the descending worker, and the other- For any solid construction outside the silo. Before the descent into silo, the worker puts on a hose gas mask, a safety belt with a rescue rope and a protective helmet. Access of workers to the silos through the lower hatch is allowed only after airing the silos and analyzing the air for the absence of harmful and toxic substances, and in the absence of adhering masses of grain and flour on the walls and vaults of silage. Preparation and execution of work in sewerage wells are carried out in compliance with the requirements of the "Safety Rules for the Operation of Water Supply and Sewerage Structures". Work in the wells should be carried out only on the written request of the administration of the enterprise, agreed upon (with the receipt of the chiefs of shops) with all the shops technologically connected with the well in which the work will be done. Works in wells should be carried out by a team of 3 people; One for work in the well, the second - the duration of work on the surface and the third - to observe and assist the worker in the well. Before the worker descends into the well, the presence of carbon dioxide and methane must be carefully checked with the gas analyzer. The detected gases should be removed by ventilation (by opening the covers of adjacent inspection wells), by air injection, etc. The work site must be fenced and marked with warning signs and light signals. Works inside furnaces, ovens, chimneys, hot devices can only be carried out after they are cooled to a temperature of 30 ° C. If necessary, short-term work at a higher temperature develop additional security measures (continuous blowing with fresh air, the use of heat-insulating fireproof suits, heat-insulating shoes, more frequent breaks in work). Work inside the tank at a temperature above 50 ° C is prohibited. Workers are blown with fresh air from hand-held portable fans with a flexible hose with mobile showering units, including devices for spraying water in the supplied air. After completion of work in tanks, silos, wells, fireboxes and other similar objects, the work manager must ensure that there are no people or foreign objects in them, and only after that give permission to close hatches.