JK-TK/GRADE-8-TERM-2 huggingface dataset:
Fire and explosion Workers do not have to come into direct contact with electricity to be harmed by it. Electricity can be an ignition source, which can cause fires and even explosions if there is an explosive atmosphere. Electrical accidents involving fires and explosions can result in multiple fatalities, severe injuries and extensive property damage. Injuries can vary depending on the seriousness of the fire explosion and how far a person is from the event. Most electrical accidents and injuries occur as a result of the following: Not isolating electrical installations and equipment properly before working on them. Working on or near live electrical systems thought to be dead. Inadequate information and instruction provided on electrical risks. A lack of training and competence to undertake tasks involving electricity. Inadequate training is one of the main causes of electrical accidents. An unsafe safe system of work. Using electrical equipment in wet conditions or touching it with wet hands. Faulty, damaged and defective electrical systems, wiring and equipment. Misuse of electrical equipment and appliances. Poor design, construction and installation of electrical installations and wiring. Overloading of electrical systems causing them to overheat, e.g. plugging too many devices into a circuit and using incorrectly rated fuses. Inadequate maintenance, inspection and testing of electrical systems and equipment. The risk of an electrical accident will be higher for those working directly on or adjacent to live electrical equipment and with higher voltages. However, all workers and others on the premises are at some risk where electricity is used in the workplace In addition to the hierarchy of control, other measures can also minimize electrical risks. Here are some tips: Do Ensure the power supply is regularly tested by a competent person and taken out of service if unsafe. Keep isolators and other electrical systems clear at all times and clearly identify them with signs. Ensure anyone working with electricity is trained and competent. The level required will depend on the task, e.g. maintenance of electrical equipment will require a higher level of training and competence. Use portable electrical equipment safely, e.g. not misusing it, using it for its intended purpose and storing it properly after use. Fully pull out electrical extension reels when in use to prevent overheating. When defrosting raw foods, keep them away from other foods to prevent cross-contamination. Complete a pre-use check of electrical equipment to ensure it is safe.
Fully pull out electrical extension reels when in use to prevent overheating. When defrosting raw foods, keep them away from other foods to prevent cross-contamination. Complete a pre-use check of electrical equipment to ensure it is safe. Switch off and unplug electrical equipment during maintenance, cleaning, repairing or adjusting. Switch off all non-essential electrical equipment at the end of the working day. Not only is this safer, but it also saves energy. Do not Do not overload sockets, as this can cause overheating and fire. Do not force a plug into a socket if it does not fit. Do not route electrical cables where they could be damaged or where someone could trip. Use cable protectors if they cannot be re-routed. Do not use electrical equipment with wet hands or near water. Do not keep liquids by electrical equipment, e.g. open drinks next to computers. Do not plug multiple extension leads together daisy-chaining . Do not pull electrical equipment out of a socket by its lead. Always grip the plug. Electrical shock: First aid The danger from an electrical shock depends on the type of current, how high the voltage is, how the current traveled through the body, the person's overall health and how quickly the person is treated. An electrical shock may cause burns, or it may leave no visible mark on the skin. In either case, an electrical current passing through the body can cause damage inside the body, cardiac arrest or other injury. Under certain circumstances, even a small amount of electricity can be fatal. When to contact your doctor A person who has been injured by contact with electricity should be seen by a health care provider. Symptoms of an electrical injury Often, the main symptom of the electrical injury is a skin burn. High-voltage injuries may cause severe internal burns. If muscle damage is extensive, it swells to the extent that the arteries are compressed. Toddlers who bite or suck on extension cords can burn their mouth and lips, causing added deformities and growth problems of the face and other facial structures. A minor shock may cause muscle pain causing the person to startle and or fall. The electricity may also cause abnormal heart rhythms causing heart problems or exacerbating current ones. The nerves and brain may also be affected which may cause memory and behavioral problems.
A minor shock may cause muscle pain causing the person to startle and or fall. The electricity may also cause abnormal heart rhythms causing heart problems or exacerbating current ones. The nerves and brain may also be affected which may cause memory and behavioral problems. Caution Don't touch an injured person who is still in contact with an electrical current. Call your local emergency number if the source of the burn is a high-voltage wire or lightning. Don't get near high-voltage wires until the power is turned off. Overhead powerlines usually aren't insulated. Stay at least 20 feet about 6 meters away farther if wires are jumping and sparking. Don't move a person with an electrical injury unless there is immediate danger. When to seek emergency care Call your local emergency number if the injured person experiences: Severe burns Confusion Difficulty breathing Heart rhythm problems Cardiac arrest Muscle pain and contractions Seizures Loss of consciousness Take these actions immediately while waiting for medical help: 1. Turn off the source of electricity, if possible. If not, use a dry, nonconducting object made of cardboard, plastic or wood to move the source away from you and the injured person. 2. Begin CPR if the person shows no signs of circulation, such as breathing, coughing or movement. 3. Try to prevent the injured person from becoming chilled. 4. Apply a bandage. 5. Separate the person from the current source before giving any first aid. 6. Call the emergency number or nearby medical responders if available . 7. If the electricity source cannot be turned off, use insulating objects such as brooms or chair to push the person affected away from the currentElectrical Injuries: first aid Electrical injuries occur when an electrical current passes through the body that causes inadvertent damage and burns to the internal organs thereby affecting their functions. Faulty electrical lines, machinery and appliances may result in an electrical injury. Others causes of electrical injuries may occur with contact with household wiring or power lines. There are a number of factors that determine the intensity of the injury such as the type of current, the duration of exposure and many others. This page will outline the symptoms and management of an electrical burn. This page is for learning purposes only.
There are a number of factors that determine the intensity of the injury such as the type of current, the duration of exposure and many others. This page will outline the symptoms and management of an electrical burn. This page is for learning purposes only. To learn to recognize and manage minor and severe electrical burns register for a Canadian standard first aid course with one of our training providers. First Aid for an electrical injury Check for breathing Separate the person from the current source before giving any first aid. Turn off the electrical current, unplug the cord, turn off or remove the fuse from the fuse box. Simply turning off the appliance or machine may not stop the electricity flow. Call the emergency number or nearby medical responders if available If the electricity source cannot be turned off, use insulating objects such as brooms or chair to push the person affected away from the current. Do not use wet or metal objects and ensure that you are standing on something dry and does not conduct electricity such as rubber mat or newspapers Once the person is away the source of electricity, check the person s airway and breathing pattern as well as the person s pulse. If you notice a burn in the person s body, remove the clothing over the affected area and rinse the burned area with cool running water until the pain subsides. Do not apply anything ice, water, toothpaste or ointments on the affected site; do not break the blisters; never remove the dead skin. If the person fainted and become unconscious, lay him down his back with his head slightly lower than the rest of the body and cover him with a warm blanket. If you suspect cervical or spine injury related to electrical injury, never move the person. Speak to a doctor about medication for pain. Composite materials A composite material is a combination of two materials with different physical and chemical properties. When they are combined they create a material which is specialized to do a certain job, for instance to become stronger, lighter or resistant to electricity. They can also improve strength and stiffness.
Composite materials A composite material is a combination of two materials with different physical and chemical properties. When they are combined they create a material which is specialized to do a certain job, for instance to become stronger, lighter or resistant to electricity. They can also improve strength and stiffness. The reason for their use over traditional materials is because they improve the properties of their base materials and are applicable in many situations Common composite materials include Masonry and reinforced concrete Composite wood, such as Plywood Reinforced plastics, such as fiberglass Ceramic matrix composites Metal matrix composites Various other advanced composite material What are the Different Types? Some common composite materials include: Ceramic matrix composite: Ceramic spread out in a ceramic matrix. These are better than normal ceramics as they are thermal shock and fracture resistant Metal matrix composite: A metal spread throughout a matrix Reinforced concrete: Concrete strengthened by a material with high tensile strength such as steel reinforcing bars Glass fibre reinforced concrete: Concrete which is poured into a glass fibre structure with high zirconia content Translucent concrete: Concrete which encases optic fibres Engineered wood: Manufactured wood combined with other cheap materials. One example would be particle board. A specialty material like veneer can also be found in this composite Plywood: Engineered wood by gluing many thin layers of wood together at different angles Engineered bamboo: Strips of bamboo fibre glued together to make a board. This is a useful composite due to the fact it has higher compressive, tensile and flexural strength than wood Parquetry: A square of many wood pieces put together often out of hardwood. It is sold as a decorative piece Wood-plastic composite: Either wood fibre or flour cast in plastic Cement-bonded wood fibre: Mineralized wood pieces cast in cement. This composite has insulating and acoustic properties Fiberglass: Glass fibre combined with a plastic which is relatively inexpensive and flexible Carbon Fibre reinforced polymer: Carbon fibre set in plastic which has a high strength-to-weight ratio Sandwich panel: A variety of composites that are layered on top of each other Composite honeycomb: A selection of composites in many hexagons to form a honeycomb shape. Papier-m ch : Paper bound with an adhesive.
It is sold as a decorative piece Wood-plastic composite: Either wood fibre or flour cast in plastic Cement-bonded wood fibre: Mineralized wood pieces cast in cement. This composite has insulating and acoustic properties Fiberglass: Glass fibre combined with a plastic which is relatively inexpensive and flexible Carbon Fibre reinforced polymer: Carbon fibre set in plastic which has a high strength-to-weight ratio Sandwich panel: A variety of composites that are layered on top of each other Composite honeycomb: A selection of composites in many hexagons to form a honeycomb shape. Papier-m ch : Paper bound with an adhesive. These are found in crafts Plastic coated paper: Paper coated with plastic to improve durability. An example of where this is used is in playing cards Syntactic foams: Light materials created by filling metals, ceramics or plastics with micro balloons. These balloons are made using either glass, carbon or plastic Careers related to use of composite materials Careers in the fibre glass and plastics industry 1. Grinder Primary duties: Grinders are responsible for operating, maintaining and repairing machines that break large plastics into smaller pieces for processing purposes. They follow specified instructions and engage in a variety of grinding activities. Grinders work closely with other plastics employees to prevent loss of production and keep production efficient. Prior to a grinding operation, they inspect machinery to prevent any potential malfunctions. They also lubricate the grinding wheels so the machine is able to grind more effectively. After grinding plastics, they may also use hand tools to file or finish the surface of the plastic product. 2. Blow molding technician Primary duties: Blow molding technicians are responsible for operating machines that mold plastic objects by blowing air into the plastic, causing it to expand. They assemble blow molding machines, maintain them and make repairs as necessary. They also provide instructions to the employees who cut and prepare the molded parts. Blow molding technicians ensure the general cleanliness of blow molding machines and may perform thorough inspections of both the machines and any blow molding equipment prior to using them. They may also assist with thetraining of additional molding personnel and educate them about important safety processes. 3. Patternmaker Primary duties: Patternmakers are responsible for creating plastic foundry patterns and making sure that patterns conform to the desired specifications. They use measuring instruments like scales and micrometers to measure plastic items and operate machines like drill presses to produce more distinct patterns.
3. Patternmaker Primary duties: Patternmakers are responsible for creating plastic foundry patterns and making sure that patterns conform to the desired specifications. They use measuring instruments like scales and micrometers to measure plastic items and operate machines like drill presses to produce more distinct patterns. They may also adapt or repair a damaged pattern or a template and use computer-aided design software to produce new designs. Patternmakers frequently work with plastic manufacturers and other professionals to ensure their patterns are accurate. 4. Plastic manufacturer Primary duties: Plastic manufacturers are responsible for molding, casting and assembling products made from plastic, including combs, dishes, toys, car parts and a number of other items. They ensure the machines that help to construct the items function properly. During blow molding, injection molding and compression molding, they engage in quality control processes to ensure the products meet the specified requirements. They may use blenders or color mixers to produce colored plastic materials and mix different colors together. When working around hot machines and plastics and drilling and cutting plastic parts, manufacturers often employ safety precautions to prevent potential accidents. 5. Quality control technician Primary duties: Quality control technicians are responsible for performing inspections of finished plastic goods, checking the dimensions of goods to ensure they're compliant with desired specifications, monitoring for various defects and establishing a system to report and repair defects. Technicians often help to train the plastics employees who create and assemble the plastic goods and instruct them on how to best exceed customer expectations and produce high-quality goods. They create and implement a set of quality control standards and communicate any quality issues to production managers and supervisors. They may also conduct regular audits of a facility's overall operations. 6. Production supervisorPrimary duties: Production supervisors are responsible for managing and leading plastics and manufacturing employees. They coordinate production activities with suppliers to optimize machines, employees and processes. Production supervisors create production schedules for employees to follow to ensure the timely shipment of goods, review production and operating reports, help solve maintenance and manufacturing issues, document operations procedures and establish channels of communication to allow for additional accountability between management and employees. They may also assist with the preparation of new moldings, equipment and supplies, and train and educate new plastics employees on production processes. 7. Mold maker Primary duties: A mold maker in the plastics industry is responsible for producing precision moldings and ensuring that they can mass-produce each molding with a high degree of accuracy. Precision moldings are plastic moldings that eventually become high-quality consumer goods. Mold makers mix modeling materials with other substances to create molds.
Mold maker Primary duties: A mold maker in the plastics industry is responsible for producing precision moldings and ensuring that they can mass-produce each molding with a high degree of accuracy. Precision moldings are plastic moldings that eventually become high-quality consumer goods. Mold makers mix modeling materials with other substances to create molds. They also adapt and modify molds for plastic injection moldings and other operations. Prior to the molding process, a mold maker might use measuring and gauging tools to perform an inspection before a large-scale molding operation. They may also provide assistance to millwrights and machinists during the injection molding process. 8. Maintenance manager National average salary: 70,148 per year Primary duties: Maintenance managers in the plastics industry are responsible for making repairs to manufacturing equipment, improving injection molding and managing other maintenance employees. They help manage the movement of plastic molds to and from manufacturing facilities, track expenditures and labor costs to ensure compliance with the manufacturing facility's budget and implement programs to reduce costs and improve production processes. They also manage bids for construction work and research new processes to implement to improve output. Maintenance managers frequently monitor plastics employees to ensure they're in compliance with health, safety and environmental regulations and ordinances. 9. Assembler Primary duties: In the plastics industry, assemblers are responsible for assembling a variety of plastic products, in addition to tools and machinery. They create, decorate and package finished goods according to specifications and work instructions. Assemblers often inspect and test the finished goods for defects prior to packaging them and notify a production manager if they find any. They may also label the product according to available instructions and meet with supervisors and other plastics personnel to discuss the implementation of new safety regulations and work standards. 10. Plastics engineer Primary duties: Plastics engineers are responsible for designing and creating materials, molds, tools and other items made from plastic. They develop and assemble new injection molding equipment, manage plastics projects, provide other engineers with assistance during the plastics production process and ensure other engineers follow any applicable safety requirements. They also work to find ways to lower the cost of manufacturing and analyze customer requirements to ensure all molded products are of high quality. Plastics engineers may also perform tests of the finished products and establish specifications for new product designs. 11. Injection mold operator Primary duties: Injection mold operators are responsible for assembling and operating machines that shape plastic.
Plastics engineers may also perform tests of the finished products and establish specifications for new product designs. 11. Injection mold operator Primary duties: Injection mold operators are responsible for assembling and operating machines that shape plastic. They implement quality control measures to ensure each mold meets the required specifications, manage any issues that might arise during the molding process, make any necessary repairs to machinery and perform routine maintenance and order new parts, if necessary. Injection mold operators help to ensure that the work environment is safe and that all employees follow any applicable health and safety regulations. They may assemble a variety of molding equipment according to design directions or building blueprints and clean the equipment after using it. 12. Plant manager Primary duties: Plant managers in the plastics industry are responsible for the daily operations of a plastics department or manufacturing facility. They helpsupervise plastics employees and provide them with regular operational and developmental training. Plant managers develop and implement strategic plans to enhance production and make quality improvements. They review manufacturing processes and look for opportunities to make innovations, reduce costs and improve the quality of finished goods. They may also research different types of plastics to determine which ones are likely to be the most effective Careers in Construction With Salaries and Duties The construction industry offers a variety of careers with work on commercial, industrial, private or civil engineering projects. Whether new construction, renovations and remodeling or performing maintenance and repairs, the construction field is a strong employment option for many. Knowing about the various careers in construction and what they do and earn can help you decide if it's the field for you. 1. Tile setter Primary duties: A tile setter covers walls, floors, ceilings and stairs with various tile materials, like ceramic, porcelain, marble, terrazzo or mosaic. They mix and apply setting materials like grout, ensure the proper placement and clean the tilesafter installation. Tile setters often work for construction companies or masonry contractors or are self-employed. 2. Drywall finisher Primary duties: A drywall finisher measures, cuts and sets drywall panels around mechanical structures, wall frames or other building elements and can create simple or ornamental surfaces through various application methods and tools. They apply the finish material and restore or maintain plaster or putty on partitions, ceilings and interior or exterior walls. Drywall finishers even out dents, apply the desired coating or color and level off the top layers of the exterior of a building. 3. Quantity surveyor Primary duties: A quantity surveyor is responsible for setting and managing the budgets for construction projects.