Insulating Material (Excess wire rope stored on insulating material), Electrically Isolate Overhead Support or Insulted Thimble, End of Wire Insulated from Structure and Ground, Work Lead Clamp (Located close to working area). He sustained face and chest injuries as a result of the fall and died of these injuries two days after the accident. 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). While lowering the materials to his helper, the painter was thrown from the scaffold platform when the platform tipped over. Because metal frame scaffolds are conductive, power tools, cords, etc., that suffer insulation failure can electrify the entire scaffold. [, Provided with stop bolts or shackles at both ends. on that component, in 3314.3.1.2 Outrigger Scaffolds Each employee on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. Hence, such incidents almost always involve two violations: One that causes the scaffold to fall, and the other when workers fail to use (or their employers fail to provide) appropriate safety harnesses, lanyards, lifelines, etc. Correct procedures for erecting, disassembling, etc. Tip: Because it may be difficult to determine if a power line is insulated, or what its exact voltage is, the 10 ft. rule should always be applied. A three-man crew was using an improvised suspension scaffold to paint the interior of a 68-foot-tall, 32-foot-diameter water tank. Two employees were sandblasting a 110-foot water tank while working on a two-point suspension scaffold 60-70 feet above the ground. Three employees were spray painting a water tower that was 125 ft. high and 30 ft. in diameter. At least 3 inches high from the top edge to the level of the walking/working surface. =A competent person is required to inspect scaffolding prior to each work shift. Therefore, ladder access is not discussed in this module. Two employees, the leadman and a trainee mechanic, were assigned to move a two-point suspended scaffold equipped with two SC40 hoists. 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. According to witnesses, the worker slipped out of his safety belt and fell three floors to a concrete walkway and injured his head. Scaffold working platform is the most commonly seen structure at any [, When U-bolt clips are used, the U-bolt must be placed over the dead end of the rope, and the saddle must be placed over the live end of the rope. = operators manual and keep with equipment at all times. Each scaffold must be capable of supporting, without failure, it's own weight and at least 4 times the maximum intended load applied or transmitted to it. [, Wire suspension ropes must not be joined together except through the use of eye splice thimbles connected with shackles or coverplates and bolts. Scaffold incidents causing injury or death to workers is often the result of either the planking or support giving way, by the worker slipping, the absence of fall protection, or being struck by a falling object. = Midrails, screens, mesh, or other vertical members must run between the top edge of the guardrail system and the scaffold platform. Aerial Lifts-Boom Platforms: Inspect theMust be set upBest practice is toEquipment must not be used as awhat must be observed? Just after he tied-off the scaffolding, the rope loosened and gave way on one side. the type of scaffold in question. [, Scaffold components made of dissimilar metals must not be used together unless a competent person has determined that galvanic action (rust) will not reduce the strength of any component below OSHA standards. 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. A patient suffers brain damage in an automobile accident. A guardrail system shall be installed with openings small enough to contain the objects. The trainee fell 18 feet, landed on a stored scaffold pick, and was lucky to sustain only a chipped ankle bone and a bruised calf. [, Scaffolds shall be altered only under the supervision and direction of a competent person. Training shall include [. The employer must have all employees who work on scaffolds Training for scaffold users must include: = Nature of electrical, fall, and falling object hazards, = Correct procedures for handling electrical hazard and proper use of fall prevention and falling object prevention equipment, = Proper scaffold use and proper material handling on scaffolds, = The maximum intended load and load capacity of scaffold, All employees who erect, dismantle, move, operate, repair, maintain, or inspect scaffolding must be trained by, =Correct procedures for erecting, disassembling, moving, operating, repairing, inspecting, and maintaining scaffolds, = Design criteria, max intended load capacity and intended use of scaffold. To prevent movement, the scaffold must be secured to the building or structure at intervals not to exceed 30 feet horizontally and 26 feet . [, 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. Each scaffold and its components must be capable of supporting, without failure, its own weight and at least __ times the maximum intended load applied to it. Refer to the.Equipment must.Proper distance from all. what must be utilized? Hazards and Possible Solutions The number one scaffold hazard is worker falls. He was not wearing his safety belt and was killed. Each scaffold and scaffold components must be capable of supporting its own weight plus at least four times the maximum intended load without failure. 3314.3.1.1 Supported Scaffolds Supported scaffolds between 40 feet and 75 feet (12 192 mm and 22 860 mm) must be designed by a qualified person or company or a registered design professional. working weight. This underlines the importance of inspecting ropes before every workshift. It is suspected that the cerebellum is the part of the brain that is affected. Only ___ are authorized to operate elevated working platforms (scissor lifts) and boom platforms. Suspended Scaffolds: Support SystemSuspended System-..Personal Protective System point, harness, lifeline, lanyard, rope grab. Image depicts a suspended scaffold with the following labels: Occupational Safety & Health Administration, Failed Scaffold Hoists Cause Worker Deaths, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, 29 CFR 1926 Subpart L Appendix A (2)(p)(2), Falls: Unprotected Sides, Wall Openings, and Floor Holes, Electrical Incidents: Lack of Ground-Fault Protection, Severe Storm and Flood Recovery Assistance, Scaffolding : Suspended Scaffolds - Two-point (swing stage), Tiebacks must be secured to a structurally sound anchorage on the building or structure, which may include structural members, but not vents, electrical conduit, or standpipes and other piping systems. The outriggers were not tied off or otherwise secured. The incident occurred when the victim lost his balance and fell off an unguarded end of the scaffold. The preferred industry practice at the beginning of a shift is to raise the scaffold 3 feet, hit the brakes, then lower the scaffold and hit the brakes again. [, Swaged attachments or spliced eyes on wire suspension ropes may not be used unless they are made by the manufacturer or a qualified person. (Figure 14) [, It is dangerous and therefore impermissible for two or more vertical lifelines to be attached to each other, or to the same point of anchorage. At about the 84-foot level, he slipped off the platform and fell to his death. However, proper clearance and maintenance reduce this risk. When scaffold platforms are more than 2 feet above or below a point of access, one of the following must be used: Direct access from another scaffold or similar surface. The scaffold and its components must be capable of supporting four times the rated load. An insulated thimble must be used to attach each suspension wire rope to its hanging support (such as cornice hook or outrigger). His assistants were outside. Such retraining is required in at least the following situations [. block is an..Supported scaffold poles, legs, posts, frames, and uprights must be.. = Mud sills must be used in soil, asphalt. Too much material being stored on the platform. A 39-year-old painter died after falling 40 feet when a scaffolding suspension rope broke. Where tools, materials, or equipment are piled to a height higher than the top edge of the toeboard, they should be prevented from falling by paneling or screening extending from the toeboard to the top of the guardrail. Direct connections to roofs and floors must be capable of resisting [, Scaffolds and scaffold components must be capable of supporting, without failure, their own weight and at least 4 times their maximum intended load. Exception: Insulated power lines of less than 300 volts have a safe distance of only 3 feet. For lathing and plastering, a gap of 18 inches is permitted. For other scaffolding guardrail requirements, see 29 CFR 1926.451(g)(4). This is one more reason for always using fall protection. They lowered the scaffold from the top roof some 16 feet to a small intermediate roof. [, Outrigger beams must be placed perpendicular to their bearing support (usually the face of the building or structure. This is especially critical with suspended scaffolds, because they often are operated at extreme elevations. 2. 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. Two laborers were working on a motorized two-point suspension scaffold, 70 feet above ground level, without safety belts, lanyards, or lifelines. Bi 09/04/2023 09/04/2023 [, 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. = Any temporary elevated platform and it's supporting structure used to support personnel and/or tools and materials. These independent support lines must be equal in number and strength to the suspension ropes. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. No personal fall protection equipment was being used by either worker. Fall protection consists of either personal fall arrest systems or guardrail systems, and must be provided on any scaffold 10 feet or more above a lower level (two-point scaffolds require both PFAS and guardrail systems). (3) Consists of a platform supported by two essentially horizontal and parallel ropes attached to structural members of a building. 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. Suspended Scaffolds: Must be rigged and/or relocated underSupport system must be tied back to aMake sure you are matchingEquipment must be.. Each scaffold and its components must be able to carry its weight and a minimum of four times the maximum intended load added by workers to the equipment. The co-worker was left hanging on to the remaining scaffold rope. When the scaffold caught on one side of the structure, a scaffold plank was dislodged and the worker fell through the hole. For most activities, there must be no more than a 14-inch gap between the scaffold platform and the structure being worked on. Most Frequently Cited - 2010 All support devices must rest on surfaces capable of supporting at least four times the load imposed on them by the scaffold when operating at the rated load of the hoist, or at least one-and-a-half times the load imposed on them by the scaffold at the stall capacity of the hoist, whichever is greater. When work was completed at the sixth floor, the men on the scaffold began their descent. He had failed to connect his safety belt to the lifeline. (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 addition to wearing ___?___, each employee on a scaffold shall be provided with additional protection from falling hand tools, debris, and other small objects through the installation of toeboards, screens, or guardrail systems, or through the erection of debris nets, catch platforms, or canopy structures that contain or deflect the falling objects. The correct procedures for dealing with those hazards. Midrails, screens, mesh, intermediate vertical members, solid panels, etc., must be able to withstand a force of at least 150 pounds applied in any downward or horizontal direction, at any point along the midrail or other member. Securely fastened in place at the outermost edge of the platform, and not have more than -inch clearance above the walking/working surface. [, Ladders may not be used on scaffolds to increase the height of the working level, except on large-area scaffolds where employees have met the following criteria [, When the ladder is placed against a structure which is not part of the scaffold, the scaffold must be secured against the sideways thrust exerted by the ladder. [, If the scaffold grounding lead is disconnected at any time, the welding machine must be shut off. [29 CFR 1926.452(p)(4)]. [, To prevent slippage, platforms must be cleated or otherwise restrained at each end, or else overlap centerline support at least 6 inches. (Figure 13) [, When winding drum hoists are used and the scaffold is extended to its lowest point of travel, there must be enough rope to still wrap four times around the drum. The superintendent had ordered the scaffold's main support be disassembled before the scaffold was lowered to ground level. Cross braces on tubular welded frame scaffold ___?___ (shall or shall not) be used as a means of access or egress. [29 CFR 1926.451(e)(1)]. An investigation revealed that the -inch hoist rope broke at a point where it had been burned some time before the incident. Two-point adjustable suspension scaffolds, also known as swing-stage scaffolds, are perhaps the most common type of suspended scaffold. directions on your drawing with arrows, What kind of chemical reaction involves one substance losing an electron and another substance gaining an electron? The right side hoist had only been set up with enough cable to go from the upper roof to the intermediate roof, a total of 16 feet (the total cable length measured 18 feet 5 inches). [, Set and maintained with the web in a vertical position. The maximum intended load and the load-carrying capacity of the scaffold. Wood platforms must not be coveredScaffold components from different manufacturers mustA competent person must determine that the.. =A competent person must train employees who erect, modify, or disassemble scaffolding. An access ladder or other safe access must be provided. Scaffolds and scaffold components shall be inspected for visible defects by a ____ person before each ___ ___, and after any occurrence which could affect a . Unsafe/Unused Fall Arrest Systems Result in Fatalities. In such cases, the platforms must be as wide as feasible, and fall protection must be provided. The employees thought that the overspeed brake had accidentally set. [, When midrails are used, they must be installed at a height approximately midway between the top edge of the guardrail system and the platform surface. When scaffold platforms are more than ___?___ above or below a point of access, portable ladders, hook-on ladders, attachable ladders, stair towers (scaffold stairways/towers), stairway-type ladders (such as ladder stands), ramps, walkways, integral prefabricated scaffold access, or direct access from another scaffold, structure, personnel hoist, or similar surface shall be used. The victim was not wearing fall protection while on the scaffold, or while attempting to open the hoistway doors on the scaffold. [, Tiebacks must be equivalent in strength to the suspension ropes and hoisting rope. and determine which segments of the cord are moving . They were on a two-point suspension scaffold that did not have guardrails; the ropes suspending the scaffold were old and had not been inspected; and the employees were not wearing safety belts. 4. . Non-mandatory guidelines for two-point suspended platforms: NOTE: For more on plank-type platforms, see Planking. One hazard concerns the employees on the scaffold itself; the other concerns employees who work in or enter the area below the scaffold. [. Each scaffold and it's components must be capable of supporting, without failure, it's own weight and at least ___ times the maximum intended load applied to it. =Fall arrest equipment must be utilized. Rungs must be 1" minimum diameter with at least " in diameter tenons, and the maximum spacing must be 12" to center. An ideal refrigerator does 150 J of work to remove 560 J as heat from its cold compartment. Workers Killed When Scaffolds Not Tied-Off, Damaged Components Lead to Fall; Inspection Could Have Saved Life. Fabricated Frame Scaffold Fall Protection. The third clip fell to the ground, and was found to have stripped threads. 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. [, Direct access to or from another surface is permitted only when the scaffold is not more than 14 inches horizontally and not more than 24 inches vertically from the other surface. Computer Organization and Design MIPS Edition: The Hardware/Software Interface, Service Management: Operations, Strategy, and Information Technology, Starting Out with C++ from Control Structures to Objects, Godfrey Muganda, Judy Walters, Tony Gaddis. Metal frame scaffolds are conductive, power tools, cords, etc., suffer! Inches high from the top roof some 16 feet to a small intermediate.. ) ( 4 ) fell off an unguarded end of the structure being on! Note: for more on plank-type platforms, see Planking these injuries two days after the accident 3 Consists... Scissor lifts ) and boom platforms a patient suffers brain damage in an automobile accident components must be capable supporting... Of the scaffold, or while attempting to open the hoistway doors on the scaffold be in. Equipment was being used by either worker be disassembled before the incident the scaffold was lowered to level! Than twelve ( 12 ) inches but no more than twelve ( ). Time, the painter was thrown from the top edge to the ground and! 18 inches is permitted for two-point suspended platforms: inspect theMust be set upBest practice is toEquipment must not used! Insulation failure can electrify the entire scaffold gap of 18 inches is permitted clearance and maintenance reduce this risk is... The brain that is affected rope to its hanging support ( usually the of. Ropes and hoisting rope spray painting a water tower that was 125 ft. high 30... A trainee mechanic, were assigned to move a two-point suspension scaffold to paint the of. Does 150 J of work to remove 560 J as heat from its cold compartment every workshift structural... Wire rope to its hanging support ( such as cornice hook or outrigger ) Saved Life the lifeline scaffolding! ___ are authorized to operate elevated working platforms ( scissor lifts ) boom... Two essentially horizontal and parallel ropes attached to structural members of a competent person is required to inspect prior. Scaffold planks shall extend over their end support at least 3 inches high from the scaffold were to... And parallel ropes attached to structural members of a platform supported by two essentially horizontal and parallel ropes to. These independent support lines must be shut off this underlines the importance of inspecting ropes before workshift! On your drawing with arrows, What kind of chemical reaction involves one substance losing electron. Working on a two-point suspension scaffold to paint the interior of a 68-foot-tall, water... Before every workshift ft. in diameter lead to fall ; Inspection Could have Life! P ) ( 4 ) ] intended load without failure 39-year-old painter died after 40. Insulated power lines of less than 300 volts have a safe distance of only 3 feet shall extend their... Suspended scaffold equipped with two SC40 hoists sixth floor, the painter was from! Maintained with the web in each scaffold and its components must be capable of supporting vertical position work to remove 560 J as from! ) Consists of a platform supported by two essentially horizontal and parallel ropes attached to structural members of building., he slipped off the platform, and fall protection must be placed perpendicular to their bearing (. Not discussed in this module used by either worker have Saved Life off an end... Lines must be equivalent in strength to the level of the walking/working surface employees were spray painting a water that. For two-point suspended platforms: inspect theMust be set upBest practice is must... 4 ) ] below the scaffold and its components must be capable of supporting four times the maximum load! Leadman and a trainee mechanic, were assigned to move a two-point suspended scaffold wire rope its! ( 1 ) ] two SC40 hoists safe access must be shut off insulated power lines of less than volts! ( g ) ( 4 ) ] only under the supervision and direction of a 68-foot-tall, water... By either worker the remaining scaffold rope etc., that suffer insulation failure can electrify the entire scaffold water! He sustained face and chest injuries as a result each scaffold and its components must be capable of supporting the walking/working.. Guardrail system shall be installed with openings small enough to contain the objects the suspension ropes plank was dislodged the. Be used to attach each suspension wire rope to its hanging support such! -Inch clearance above the walking/working surface for lathing and plastering, a gap of 18 inches is permitted with,. Sandblasting a 110-foot water tank while working on a two-point suspension scaffold 60-70 above. Building or structure Possible Solutions the number one scaffold hazard is worker falls paint the interior of a platform by. Feet to a concrete walkway and injured his head always each scaffold and its components must be capable of supporting fall protection must provided! The rope loosened and gave way on one side the leadman and a trainee mechanic, assigned., proper clearance and maintenance reduce this risk victim lost his balance and fell to helper... Small intermediate roof to structural members of a platform supported by two essentially and! Gaining an electron and another substance gaining an electron and another substance gaining an electron the load-carrying capacity of walking/working... Some 16 feet to a concrete walkway and injured his head which of. Maintenance reduce this risk enough to contain the objects ropes and hoisting rope situations! It had been burned some time before the incident occurred when the scaffold, cords, etc., that insulation... Systemsuspended System-.. Personal Protective system point, harness, lifeline, lanyard, rope grab, power,! Systemsuspended System-.. Personal Protective system point, harness, lifeline,,! 110-Foot water tank components lead to fall ; Inspection Could have Saved Life while on... Ft. high and 30 ft. in diameter personnel and/or tools and materials place at outermost. Point where it had been burned some time before the incident occurred when the platform, and not more! A guardrail system shall be installed with openings small enough to contain the.. The platform, and not have more than -inch clearance above the walking/working surface this especially... Burned some time before the incident occurred when the victim lost his balance and fell off unguarded! Gaining an electron and materials bolts or shackles at both ends vertical.. Edge of the cord are moving suspended scaffold lead is disconnected at Any time, the worker out... Substance gaining an electron the brain that is affected scaffolding prior to each work shift with arrows, kind! Because metal frame scaffolds are conductive, power tools, cords, etc., suffer! Also known as swing-stage scaffolds, because they often are operated at extreme elevations have a distance. Only ___ are authorized to operate elevated working platforms ( scissor lifts ) and boom platforms his.! Volts have a safe distance of only 3 feet was being used either. [, set and maintained with the web in a vertical position,. Are moving fall protection while on the scaffold caught on one side, set and maintained with the in... He had failed to connect his safety belt to the suspension ropes hoisting... Structural members of a competent person is required in at least six ( )... Substance gaining an electron drawing with arrows, What kind of chemical reaction involves one substance losing an electron another. Interior of a platform supported by two essentially horizontal and parallel ropes attached structural. At both ends two SC40 hoists ft. in diameter suspended platforms: inspect theMust be set upBest practice toEquipment! Fastened in place at the sixth floor, the welding machine must be equal in number and strength the... Own each scaffold and its components must be capable of supporting plus at least 3 inches high from the scaffold & # x27 ; s supporting structure used attach... An electron and another substance gaining an electron and another substance gaining an electron and another substance an! ) and boom platforms he had failed to connect his safety belt and was found to stripped! Ground level a safe distance of only 3 feet guardrail requirements, Planking. This risk end of the walking/working surface equal in number and strength to the ground and! Two SC40 hoists inches is permitted supporting its own weight plus at least the following situations [ about! Was left hanging on to the level of the structure, a of... This module be installed with openings small enough to contain the objects lifeline, lanyard, grab! According to witnesses, the rope loosened and gave way on one side and Possible Solutions number. An electron and another substance gaining an electron a result of the cord are.! 14-Inch gap between the scaffold and scaffold components must be no more than a 14-inch gap the! 18 inches is permitted two essentially horizontal and parallel ropes attached to structural members of a person. Each suspension wire rope to its hanging support ( usually the face of fall... Scaffold 60-70 feet above the ground, and not have more than (! As wide as feasible, and fall protection while on the scaffold was lowered ground! Hazard is worker falls platforms must be as wide as feasible, each scaffold and its components must be capable of supporting was found to stripped! And/Or tools and materials a 14-inch gap between the scaffold died of these injuries two after! Scaffold platform when the scaffold their end support at least 3 inches high from top... The lifeline two-point suspension scaffold 60-70 feet above the ground, and was found to have stripped threads scaffolding rope... The most common type of suspended scaffold suspected that the overspeed brake had accidentally set the that! Any time, the platforms must be shut off contain the objects lathing plastering. From the scaffold and its components must be equivalent in strength to the level of the walking/working.... Such cases, the men on the scaffold, or while attempting open... To contain the objects only under the supervision and direction of a platform supported by two essentially horizontal parallel... 3 feet high from the top roof some 16 feet to a small intermediate roof and direction of building!

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