Personal fall arrest systems on scaffolds must be attached by..Do not attach to scaffold member unless the = Be installed along all open sides and ends of platforms before work begins. Scissors lifts are considered by OSHA to be.Personal fall arrest is not required by OSHA. The victim and a co-worker were on a two-point suspension scaffold when the left winch lost its grip on the wire rope, causing the left side of the platform to drop. construction methods, and its use. The scaffold manufacturer specified 600 pounds of counterweight for this scaffold and load, but the painters had rigged the scaffold using only 200 pounds of counterweight (100 pounds per outrigger). Indicate the Response: No. The second man on the scaffold (the window washer) managed to cling to the scaffold and a nearby window ledge until he could be rescued. [, If the scaffold grounding lead is disconnected at any time, the welding machine must be shut off. Inspection of the scaffold hoist revealed a defect in a centrifugal safety brake. The superintendent was in a rush to get the system disassembled because a helicopter had been contracted to remove the structural members of the scaffold support system on Monday. (Figure 7) [, Scaffold components manufactured by different manufacturers are not allowed to be modified to make them fit together, unless a competent person determines that the resulting scaffold is structurally sound. An employee was on a two-point suspension scaffold, approximately 25 ft. high, when the guardrail gave way. Two-point suspension scaffolds must be tied or otherwise secured to prevent them from swaying, as determined to be necessary by a competent person. [, The ladder legs must be secured to prevent them from slipping or being pushed off the platform. (per employee) . The employees were not using fall protection, and the scaffold was not tied off. [, When vertical lifelines are used, they must be fastened to a fixed safe point of anchorage, independent of the scaffold, and be protected from sharp edges and abrasion. [29 CFR 1926.451(e)(1)]. Suspended scaffolds are often made of metal and sometimes used in close proximity to overhead power lines. [, If there is a tail line below the hoist, it must be insulated to prevent contact with the platform. ( a) Capacity. Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Safety Standards for Scaffolds Used in the Construction Industry, Inspection procedures for enforcing Subpart L, Scaffolds used in construction, Whether plywood may be used as scaffold decking material over wood scaffold planks; 29 CFR 1926.450 and 1926.451, Whether OSHA standards prohibit using two power hoists wired together to a single control; whether a minimum of two persons are required to be on board a two-point suspended scaffold, Requirements in 1926 Subpart L "Scaffolds" regarding the use of plywood to make platform decking for scaffolds, A Guide to Scaffold Use in the Construction Industry, Selecting and Implementing a Fall Protection System for an AWP, Rolling Towers/Mobile Scaffold: Inspection, Maintenance, and Use Tip Sheet, Preventing Electrocutions During Work with Scaffolds Near Overhead Power Lines, Preventing Worker Injuries and Deaths Caused by Falls From Suspension Scaffolds, Severe Storm and Flood Recovery Assistance, For additional information on specific state plans or other general standards, see the general industry, For additional information on related safety and health topics pages, see the general industry. 4. . [, Do not load the scaffold or any component parts beyond their maximum capacity (their own weight and 4:1 the maximum intended load). While the two men were working on the scaffold, their weight caused the outriggers to slip, and the scaffold, rigging, and victims fell to the ground. [, In addition to direct connections to buildings (except window cleaners' anchors), acceptable ways to prevent scaffold sway include [, Scaffolds and scaffold components must be inspected for visible defects by a competent person before each shift, and after each occurrence that could affect a scaffold's integrity (such as being struck by a crane). An employee was riding a swinging scaffold down the side of a water tank when the air line for a sand blaster became caught by the scaffold and pulled an air purifier from the walkway. As the employees went up in the scaffold, the right side fell to the ground from an elevation of 20 feet. A 33-year-old male caulking mechanic was killed while sharing a two-point suspension scaffold that had already been rigged by workers from a window washing firm. Therefore, ladder access is not discussed in this module. The worker on the right side of the platform was wearing a body harness hooked by a lanyard to a lifeline that kept him from falling. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or more stringent requirements. His co-worker was able to grab on to the scaffold, and climbed to a fire escape. Such as: = Change in type of scaffold, fall protection, = Inadequacies in employees work indicates a need for retraining. [, Suspended scaffold outrigger beams must be stabilized by [. The second type is suspended scaffolds, which are one or more platforms suspended by ropes or other non-rigid, overhead support. A 39-year-old painter died after falling 40 feet when a scaffolding suspension rope broke. Scaffolding hazards are addressed in specific standards for the construction industry. When toeboards are used for falling object protection, they must be [. This caused arcing between the scaffold and the building. [, Scaffolds shall not be moved horizontally while employees are on them, unless they have been designed for that purpose by a registered professional engineer, or in the case of mobile scaffolds, where the provisions of, Two-point suspension scaffolds shall not be bridged or otherwise connected one to another during raising and lowering operations unless the bridge connections are articulated (attached), and the hoists properly sized. Or point loading, or concentrating too much of the load in one area. = Top rail to be at 38 inches 45 inches. Two-point adjustable suspension scaffolds, also known as swing-stage scaffolds, are perhaps the most common type of suspended scaffold. = Any temporary elevated platform and it's supporting structure used to support personnel and/or tools and materials. (see Falls: Unprotected Sides, Wall Openings, and Floor Holes in the OSHA Construction eTool), The employer must designate a competent person, who would be responsible for determining the feasibility and safety of providing fall protection for employees erecting or dismantling supported scaffolds. In areas so narrow that platforms and walkways cannot beThe front edge of the platform cannot be more than ___ from the face of the work unlessThe maximum distance from the face for outrigger scaffolds must be. A patient suffers brain damage in an automobile accident. Unsafe/Unused Fall Arrest Systems Result in Fatalities. He was pronounced dead on arrival at a hospital at 11:55 a.m. At approximately 2:00 p.m., a painter and a helper were scraping, glazing, and painting windows from a 32-foot-high two-point suspension scaffold. The first type is supported scaffolds, which consist of one or more platforms supported by rigid, load-bearing members, such as poles, legs, frames, and outriggers. and determine which segments of the cord are moving The leadman--the competent person on site--got out of the scaffold onto the roof and worked with the trainee to manually override and release the overspeed brake. The scaffold attachment point failed, releasing the scaffold cables, and the scaffold fell to the ground. When the victim finished painting, he unhooked his lanyard from his lifeline and moved along the ladder platform to a position where he could hand his spray gun to the foreman (who was at the top of the tank). The victim was on the left side of the platform and was wearing the same equipment, but he apparently did not have the lanyard hooked to his lifeline. [29 CFR 1926.451(g)(2)]. 4. . Investigation indicated that the scaffold motor assembly was improperly connected to the scaffold platform. The purifier struck the employee and knocked him from the scaffolding. The weight of the scaffold and its occupants must be supported by both the structure to which it is attached and by each of the scaffold components that make up the anchorage system. Rungs must be 1" minimum diameter with at least " in diameter tenons, and the maximum spacing must be 12" to center. An interior hung suspension scaffold consists of a platform suspended from the ceiling or roof structure by fixed-length supports. [, Suspended scaffold outrigger beams must be stabilized to the floor or deck by [. Such retraining is required in at least the following situations [. building materials, paint roller extensions, scaffold components) that may be handled on them, come closer than 10 feet to the power line. [, Guardrail systems must be installed along all open sides and ends of platforms , and must be in place before the scaffold is released for use by employees other than erection/dismantling crews. [, When intermediate members (such as balusters or additional rails) are used, they must be no more than 19 inches apart. Debris nets or canopy structures that contain or deflect falling objects. = power lines must be maintained (10 minimum). [, The use of repaired wire rope as suspension rope is prohibited. When the left scaffold rope broke and the scaffold collapsed, one employee was killed and another fell to a nearby roof and broke both arms. The painter sent the helper to the sidewalk below to receive the tools and paint buckets. Tip: Many scaffold failures occur early in the morning, after condensation has collected on the wire ropes overnight. At least 3 inches high from the top edge to the level of the walking/working surface. This defect and the victim's possible failure to release the parking brake before beginning his descent caused one end of the scaffold to drop. [, Scaffolds must be designed by a qualified person, and be constructed and loaded in accordance with that design. They attempted to move a hook to reposition it when the hook slipped off the parapet, causing one end of the scaffold to drop. For most activities, there must be no more than a 14-inch gap between the scaffold platform and the structure being worked on. working weight. Side stringers of lumber no smaller than 2 x 6 inches set on edge. [29 CFR 1926.451(d)(1)] The victim had been painting from one end of this scaffold while wearing a safety belt and lanyard attached to an independent lifeline. Three employees were spray painting a water tower that was 125 ft. high and 30 ft. in diameter. Why is creativity useful when identifying resources? A guardrail system shall be installed with openings small enough to contain the objects. [, Any part of a scaffold that has been damaged or weakened so that it no longer meets OSHA strength requirements must either be repaired, replaced, braced, or removed from service. An ideal refrigerator does 150 J of work to remove 560 J as heat from its cold compartment. Employers shall retrain each employee when they have reason to believe that the employee lacks the skill or understanding to safely erect, use, or dismantle a scaffold. Foreman Dies When Overloaded Scaffold Falls, Scaffold with Improvised Components Fails; Worker Dies, Broken Suspension Ropes Result in Worker Deaths. Because metal frame scaffolds are conductive, power tools, cords, etc., that suffer insulation failure can electrify the entire scaffold. In addition, the scaffold did not have a guardrail on the side facing the building, where there was a 2-foot-wide opening between the building and the scaffold created by indented window arches. [, Employees who are involved in activities such as erecting, dismantling, repairing, and inspecting scaffolds must be trained by a competent person to recognize any hazards associated with those activities. The design criteria, maximum intended load capacity, and intended use of the scaffold. The portion of the tail line that hangs free below the scaffold must be guided or retained, or both, so that it does not become grounded. The employee was hospitalized for his injuries. A bar or other means securely fastened to each end of the platform to prevent it slipping off the hanger. Most Frequently Cited - 2010 This was done without inspecting the hoist for sufficient cable length. The incident occurred when the victim lost his balance and fell off an unguarded end of the scaffold. Which shotgun choke is best for hunting a large, slow bird, such as a turkey? Or a minimum of 1 times the tipping moment imposed by the scaffold when it is operating at the stall load of the hoist, whichever is greater. (Figure 15) [, Each toprail or equivalent member of a guardrail system must be able to withstand a force of at least 200 pounds applied in any downward or horizontal direction, at any point along its top edge. The victim, who was wearing a separate lifeline with a work belt attached to a 6 ft. lanyard, suffered a sprained back and was taken to a hospital for examination. [, Window cleaners' anchors may not be used for this purpose. The maximum distance from the face for plastering and lathing operations isEach end of a platform, unless cleated or secured, must extend from the centerline of its support at least.. Each end of a platform greater than __in length must not extend over its support more than.. Where platforms do overlap to create a long platform, the overlap must occur over supports and not be less than. While lowering the materials to his helper, the painter was thrown from the scaffold platform when the platform tipped over. This does not preclude the use of systems designed to function as both suspension scaffolds and emergency systems. The front edge of all platforms shall not be more than ___?___ from the face of the work, unless guardrail systems are erected along the front edge and/or personal fall arrest systems are used. Wood platforms must not be coveredScaffold components from different manufacturers mustA competent person must determine that the.. On the basis of what you know about cerebellar function, how can you determine that the cerebellum is involved? Hung by ropes or cables connected to stirrups at each end of the platform, they are typically used by window washers on skyscrapers, but play a prominent role in high-rise construction as well. Each scaffold and its components must be capable of supporting, without failure, its own weight and at least 4 times the maximum intended load applied to it. An access ladder or other safe access must be provided. Or wind screens (when windscreens are used the scaffold must be secured against the anticipated wind forces). [, When other types of hoists are used, the suspension ropes must be long enough to allow the scaffold to travel to the level below without the rope end passing through the hoist, or else the rope end must be provided with means to prevent the end from passing through the hoist. The outriggers were not tied off or otherwise secured. There are two kinds of falling object hazards associated with scaffolds. This put the load on a single -inch wire rope hoist line, which was overloaded by 255 percent, and on the diesel hoist located outside the chimney, which was overloaded by 167 percent. These incidents can be avoided by compliance with OSHA standards. 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