Overhead Crane SafetyThree Major Hazards and Preventative Measures. To prevent surface water from entering an excavation and to provide adequate drainage of the adjacent area, OSHA standards require the use of: Water removal equipment, diversion ditches, dikes, or other suitable methods (Your Answer). Electric shock occurs when: Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? Audiometric testing monitors an employee's hearing: 8. Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? In addition, the employer must train each employee to understand what these markings signify. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder), -- Length of exposure to electricity Sharp, abrasive, pinching, or otherwise hazardous moving parts of power tools: Must have guards to prevent contact with workers (Your Answer). 10. The person responsible for managing the hoist should be well-trained and qualified. If you feel that an OSHA inspection is needed to get hazards corrected at your workplace, which is your best option? It extends to all personnel in the vicinity. Power line contact is literally defined as the inadvertent contact of any metal part of a crane with a high-voltage power line. All jacks - lever and ratchet jacks, screw jacks, and hydraulic jacks - must have a device that stops them from: Jacking up too high (a stop indicator) (Your Answer), A narrow excavation made below the surface of the ground in which the depth is greater than the width - with the width not to exceed 15 feet (Your Answer). Or, portable gantry cranes can be designed with longer extension cords to accommodate power supplies that may not be as close to the work area that the crane is moved to. Employees working in the vicinity of a crane must take care to avoid what kind of accident? Ensure that the operator can view their surroundings and adequately communicate with ground personnel. -- the frequency. Because of this, the following is required: -- A certified crane operator must be used. Inspect the crane for any deficiencies before an operation, such as proper lubrication and safe working conditions of the hoist, trolley and bridge mechanisms. Its crucial that any crane operator know the weight of a load and the capacity of the crane. What are the four main types of electrical injuries? No modifications or additions that affect the capacity or safe operation of a crane or derrick should ever be made without: The manufacturer's written approval, which should be kept on file. But hazards do exist with all types of cranesincluding overhead cranesand in all facets of crane operation. Everyone associated with a crane needs to stay alert and focused on the job at hand - especially on critical or difficult lifts. Chemical manufacturers and importers must convey the hazard information they learn from their evaluations to downstream employers by means of labels on containers and: 3. The area within a 10-foot radius of a power line is considered an unsafe work areaor danger zoneand it must be clearly marked on the ground by insulated barriers, fences, tape, etc. Thats because the loads being lifted by overhead hoists tend to be fairly heavy and cause serious damage if dropped. Monitor the movements of the crane at all times during an operation. True or False: There is usually some form of warning before a cave-in. The greatest hazards posed by hand tools result from: Misuse and improper maintenance (Your Answer). Aside from maintenance, improper securing of the load or the slings that carry the load is one of the leading causes of accidents with overhead hoists and cranes. The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day Electricity travels in closed circuits, and its normal route is through a conductor. Overhead handling equipment like cranes, hoists and monorails can increase productivity, enhance safety, improve ergonomics and maximize floor space. Follow all local laws and safety regulations as they pertain to crane operations. Because using cranes or derricks to hoist personnel poses a serious risk to the employees being lifted, any cranes and derricks that hoist personnel must: 8. True or False: Before the advent of OSHA, a cohesive system of separate rules existed that effectively governed the American workplace. 2. Understand, use, and teach proper lifting techniques for different types of loads. Where any part of a crane/derrick is within the working radius of another crane/derrick, the controlling entity must institute a system to coordinate operations. Safety nets must be strong enough to support workers who fall, and must: Have small enough mesh openings that the employee doesn't fall through the net itself (Your Answer). Occupational Safety & Health Administration. -- under cranes Provide training, supervision and guidance to other crew members on proper rigging methods and safety protocols. In a vast majority of cases where team personnel are at fault, it is due to inattention, poor judgment, overconfidence, or haste to . Loads suspended by cranes present a high risk to construction workers as 42 percent of all crane-related occupational fatalities have been due to workers being struck by falling objects during a crane's operation. when carrying out inspection work or working from suspended platforms -- the range of motion Oftentimes, operators mistakenly believe they are able to rely on their instinct or experience to determine whether a load is too heavy. To adhere to fire safety precautions, flammable and combustible materials must be stored according to: 6. The Trustees work to protect the area's ecological, scenic, and historic importance. Each year nearly 200 people die from power line contact and about three times as many are seriously injured. Many accidents involve large lift systems like tower cranes and mobile cranes. During a tilt-up or tilt-down operation, no employee must be directly under the load and only employees essential to the operation are permitted in the fall zone if it is not feasible for the employee to perform that operation from outside the fall zone. Crane Safety Hazards and Control Measures. 5. Todays operator must be well trained and have a clear understanding of load dynamics, lifting capacities at various configurations, and the conditions under which such lifting capacities are valid. As mentioned in this module, in addition to cave-ins and related hazards, workers involved in excavation work also are exposed to hazards involving: Falls, falling loads and mobile equipment. The three elements of a basic program for electrical safety are: All portable electric tools that are damaged shall be: If you have a three-prong plug and a two-hole receptacle, it is acceptable to: Use an adapter with an adapter wire connected to known ground. Erect and maintain control lines, warning lines, railings or similar barriers to mark the boundaries of the hazard areas. -- Mining industries. Employers must provide a training program that teaches employees who might be exposed to fall hazards: How to recognize such hazards and how to minimize them. Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. The competent person determines that it is safe to do so and implements measures necessary to restrain the boom hoist and telescoping, load, swing, and outrigger or stabilizer functions. -- How many sources generate loud noises. Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. Nearly 80 percent of these upsets can be attributed to predictable human error when the operator inadvertently exceeds the cranes lifting capacity. Next, determine if any part of the equipment, load line or load (including rigging and lifting accessories), if operated up to the equipment's maximum working radius in the work zone, could get closer than 20 feet . 9. 8. These rules were combined under the umbrella of OSHA. OSHA 1926.1424 is designed to protect employees who work near a crane from being struck or crushed by the crane's rotating superstructure. Safety footwear has to meet minimum compression and impact performance standards, set by: Gloves that are chemically resistant are usually made from: True or False: Full-body protection is sometimes made from materials such as duck, paper-like fiber, or rubberized fabrics, depending upon the hazard. True or False: There is usually some form of warning before a cave-in. Employers must provide employees with effective information and training on hazardous chemicals in their work area: -- At the time of their initial assignment When manually moving materials, employees should always try to lift it alone if a load is so bulky it cannot be properly grasped or lifted, when they cannot see around or over it, or when a load cannot be safely handled. Anytime an adapter is used to accommodate a two-hole receptacle, the adapter wire must: If a worker on a scaffold can fall more than 10 feet: They must be protected by guardrails and/or personal fall arrest systems (PFAS). It is the responsibility of the crane owner and job supervisor to ensure that crane operators are competent and qualified to do the job. Employees working in the vicinity of a crane must take care to avoid what kind of accident? Operators should have workers observing nearby to assist them whenever it is difficult to visually maintain the necessary clearance. Approximately 75 percent of struck-by fatalities involve: It is preferable not to drive a vehicle in reverse if you have an obstructed rear view, but if you do, make sure: Workers are most at risk from falling objects when standing or working: -- under scaffolds The posting of signage warning employees of the hazards of the cranes swing radius is used. OSHA's Hazard Communication Standard (HazCom) is designed to ensure that information about __________and associated protective measures is disseminated. Define the work zone as the area 360 degrees around the crane, up to the crane's maximum working radius. Concrete foundation: A tower crane always sits on a concrete foundation, where anchors are placed to secure the crane to the ground. -- Receptacles that are not part of a building or structure. Power line contact most often occurs when the crane is moving materials nearby or under energized power lines and the hoist line or boom touches one of them. Do not move any loads over people. Anyone controlling construction sites has health and safety responsibilities. Exception: When the employer can demonstrate that it is neither feasible to erect such barriers on the ground nor on the equipment, the hazard areas must be clearly marked by a combination of warning signs (such as "Danger--Swing/Crush Zone") and high visibility markings on the equipment that identify the hazard areas. OSHA estimates that one crane upset occurs for every 10,000 hours of crane use. Be aware of any potential hazards near the work area, and report them to the supervisor immediately. Hazards related to this job Specific preventive measures can be seen by clicking on the respective in the third column of the table. Likewise, suspended loads should never be moved over employees and personnel should never be lifted or transported on a hoist. -- Hearing protection to be used. Derricks are lifting devices that are commonly found on ships and docks. Here are some duties of a signal operator: Riggers ensure loads are secured safely and efficiently to avoid damage or injury during a lift. Crane operation is a complex task that requires a high level of skill and training. Monitor the cranes operations and guide as needed. The three main scaffold types are aerial lifts, supported scaffolds and: 7. -- Construction 5. Mechanical failure can also cause machinery to malfunction unexpectedly and drop a heavy load. 4. Reduce the Chances of Fatalities: Properly outline fall zones with barriers. *This document is issued, as a guide, to explain the procedures to be followed at the site by Third Party Contractors while working in the vicinity of MV/LV OHL. 4. Crane Aerospace & Electronics has an overall rating of 3.6 out of 5, based on over 338 reviews left anonymously by employees. Trench boxes or shields must be designed or approved by: 7. Electric shock occurs when: The body becomes part of the circuit (Your Answer). The 2010 standard addresses key hazards related to cranes and derricks on construction worksites, including the four main causes of worker death and injury: electrocution, crushed by parts of the equipment, struck-by the equipment or load, and falls. Crane safety is the practice of ensuring a safe working environment for workers and visitors when operating a crane on the worksite. 3. Then, the employer must determine if any part of the crane, load line or load could get closer than 20 feet to a power line if the crane is operated at its maximum working radius within the work zone. Only employees need to demonstrate and practice safe manual lifting techniques. As a result, San Francisco alone has seen more than a 24% increase in office vacancy. A range of people have specific responsibilities for cranes including the: crane designer, manufacturer, importer and/or supplier crane owner and other persons with management or control of the crane or the workplace where a crane will operate competent person who inspects cranes, and As a general rule, 10 feet is the minimum safe working distance from power lines. Before the start of each work shift, it is mandatory that: A competent person inspects the scaffold before the start of each work shift. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? Complete post-operation checks to ensure the crane is in good working order before shutting it down. This scaffold is simply a rope attached to a harness with an assembly like a boatswain's chair for the worker to sit in. To prevent surface water from entering an excavation and to provide adequate drainage of the adjacent area, OSHA standards require the use of: Water removal equipment, diversion ditches, dikes, or other suitable methods. Use hand and voice signals to direct the crane operator. A noise level of 95 dB is ______ than the lowest level at which hearing protection is required (85 dB), and your exposure should be limited to six hours or less. crane set-up and rigging. Workers must use caution so that they do not place themselves in dangerous areas where they can be struck by falling loads or by falling or collapsing crane components. The formula for all simple slope excavations 20 feet (6.11 meters) or less deep states that for every foot of depth, the trench must be excavated back: 6. 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