- STEPHEN MALLINGER
- Acting Director
- Directorate of Technical Support
- Hazard Information Bulletin: Unauthorized Modification of a Forklift Carriage Assembly
The Chicago Regional Office brought to our attention an accident that resulted in a fatality. At the time of the accident, the employer had engaged in the unsafe practice of modifying a forklift truck attachment.
Workers in a company that fabricates material handling equipment for the road paving industry were welding a 216 3/4-inch long 3" by 3" angle iron that was bent into a semicircular shape onto the top side of a cylindrical silo. This step occurs at the end of the silo fabrication process. When completed, the silo is about 11 1/2 feet in diameter, 50 feet long, and weights 10, 000 lbs. To perform this task, the silo was placed on its side on a set of power-driven rollers with a crane. To weld the semicircular angle iron onto the silo, the welding end of the silo had to be lifted up. To lift the silo, an eight-foot long boom was attached to the fork carriage of a forklift. The forklift operator inserted the extended boom 3' into the silo, tilted the mast 15 degrees backward, and raised the fork carriage. A worker then went underneath the fork carriage to measure the diameter of the silo. He was crushed to death when the 500 lb. fork carriage and 250 lb. extension boom disengaged from the top truck carriage bar and fell on him.
Attaching an eight-foot boom to the fork carriage to do the above task is a modification of the forklift. This modification affects the capacity and the safe operation of the forklift and must have the forklift manufacturer's prior written approval [29 CFR 1910.178 (a)(4)]. Also, 29 CFR 1910.178 (m)(2) prohibits a worker from attempting to measure the diameter of the silo from under the fork carriage. It states, "No person shall be allowed to stand or pass under the elevated portion of any truck, whether loaded or empty".
The fork carriage was mounted on the top truck carriage bar with two top hooks engaged and two bottom hooks bolted onto the lower pads of the fork carriage. The fork carriage is an Industrial Truck Association Class II attachment with capacity ratings between two thousand and fifty-five hundred lbs. When the load of the silo was placed at the tip of the extended eight-foot boom, it may have exceeded the capacity of the attachment, causing the attachment to jump off the top truck carriage bar.
Compliance and consultation personnel should remind users of forklifts that any modifications that affect the capacity and safe operation of a forklift must have written approval from the manufacturer.
Please distribute this bulletin to Area Offices, State Plan States, Consultation Projects and appropriate local labor and industry associations.
1 The Directorate of Technical Support issues Hazard Information Bulletins (HIBs) in accordance with OSHA Instruction CPL 2.65 to provide relevant information regarding unrecognized or misunderstood health hazards, inadequacies of materials, devices, techniques, and safety engineering controls. HIBs are initiated based on information provided by the field staff, studies, and concerns expressed by safety and health professionals, employers and the public. Information is compiled based on a through evaluation of available facts, and in coordination with the appropriate parties.recipe for success reproductive success what does success look like keto success strategies for success dress for success locations pull out method success rate hair success fargo success story dress for success denver how do you measure success castor oil at 37 weeks success laser treatment for toenail fungus success rate 2020 student academic success center national society of leadership and success reviews condom success rate iui success rate calculator the success principles way of the wolf: straight line selling: master the art of persuasion, influence, and success congratulations quotes for success zoloft success stories shark tank success stories secret of my success soundtrack success metrics give and take a revolutionary approach to success millionaire success habits success rate birth control success rate success quotes for work dress for success locations near me iui success short success quotes success realty embryo grading and success rates clomid success rate best days to take clomid for success executive success program what to do after embryo transfer to increase success vasectomy success rate books about success bachelor success rate customer success management weight loss success success academy uniform success is not final quote project success success real estate school success books quotes for future success medmen lake success success memes client success manager everyday success team performance manager 4 success factors success in high school what is customer success success rate of bar rescue lmt success group 16/8 diet success stories dds success secret to my success financial success iud success rate c6 c7 surgery success rate how to measure success eleven rings the soul of success struggling from success success inspirational quotes what is the success rate of immunotherapy success iceberg customer success manager job description getting off lexapro success stories the secret to my success village club at lake success weight watchers success stories bible verses about success poems about success success sharing home depot quotes about success and achievement keno success animal mating success horse what is the success rate of urolift what is the national society of leadership and success success in french customer success specialist what is the success rate of heart valve replacement surgery dress for success austin success motivation launching success success through a positive mental attitude best success quotes membrane sweep at 39 weeks success rate empty sac at 8 weeks success stories magnet of success peloton success stories success plan template was the new deal a success wellstar success factors give and take: a revolutionary approach to success pcos pregnancy success rate for an advertiser focused on branding, what are the key success metrics? success virtual learning center national honor society of leadership and success med surg success outliers the story of success prp hair treatment success rate was the new deal a success or failure clomid success stories skills for success key success factors vbac success rate provera pregnancy success winston churchill success quote pcos hair loss regrowth success heart transplant success rate connect for success