Assessment of Fall-Arrest Systems for Scissor Lift Operators

Pan, Christopher S.; Powers, John R.; Hartsell, Jared J.; Harris, James R.; Wimer, Bryan M.; Dong, Ren G.; Wu, John Z.

doi:10.1177/0018720811425024

Cited by 9 publications

(5 citation statements)

References 19 publications

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“…Increased harness thigh strap angle and low harness back D-ring location were found to correlate to post-fall harness poor fit. NIOSH also has reported the effects of body characteristics and harness fit on human suspension tolerance time38 ) and the merits and risks of fall-arrest system use for operators of mechanized access platforms39 ) . Decreased suspension tolerance time was associated with body size (i.e., weight, stature, upper- and lower-torso depths; r=−0.36 ~ −0.45, p ≤0.03).…”

Section: Activities and Accomplishmentsmentioning

confidence: 99%

Fall Prevention Research and Practice: A Total Worker Safety Approach

Hsiao

2014

Ind Health

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Slips, trips, and falls (STF) represent a serious hazard to workers and occupants in many industries, homes, and communities. Often, the cause of a STF incident is multifactorial, encompassing human, environmental, and task risk factors. A STF-related disability can greatly diminish the occupational capability and quality of life of individuals in both the workplace and the home. Countering STF hazards and risks both on and off the job and on all aspects of control measures is a “total worker safety” matter, a challenging yet tangible undertaking. As the federal organization responsible for conducting research for the prevention of work-related injuries in the United States, the National Institute for Occupational Safety and Health (NIOSH) has been conducting research on STF controls for some decades. Many NIOSH research outcomes have been utilized for STF prevention in workplaces, with potential for prevention in homes as well. This paper summarizes the concept of total worker safety for STF control, NIOSH priority research goals, major activities, and accomplishments, and some emerging issues on STF. The strategic planning process for the NIOSH research goals and some identified research focuses are applicable to the development and implementation of global STF research goals.

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Section: Activities and Accomplishmentsmentioning

confidence: 99%

Fall Prevention Research and Practice: A Total Worker Safety Approach

Hsiao

2014

Ind Health

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“…The methods used to determine the stability of a freestanding MCWP under potentially destabilizing conditions were based off of other construction equipment studies (Pan et al, 2012 b; Harris et al, 2010; Wu et al, 2001). The methods followed are consistent with the existing ANSI standard for fall protection (Z359.1-2007).…”

Section: 0 Methodsmentioning

confidence: 99%

“…In the event of a fall, the act of securing the lanyard and harness—one end attached to the worker and the other to the platform—subjects the platform to potentially destabilizing forces. Further research is needed on MCWPs under working conditions to examine these potentially destabilizing forces and their contribution to catastrophic failure and collapse leading to injury (Harris et al, 2010; Pan et al, 2012 b). …”

Section: 0 Backgroundmentioning

confidence: 99%

Evaluating the stability of a freestanding Mast Climbing Work Platform

Wimer

Pan

Lutz

et al. 2017

Journal of Safety Research

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Mast Climbing Work Platforms (MCWPs) are becoming more common at construction sites and are being used as an alternative to traditional scaffolding. Although their use is increasing, little to no published information exists on the potential safety hazards they could pose for workers. As a last line of defense, a personal fall-arrest system can be used to save a worker in a fall incident from the platform. There has been no published information on whether it is safe to use such a personal fall-arrest system with MCWPs. In this study, the issues of concern for occupational safety included (1) the overall stability of the freestanding mast climber during a fall-arrest condition and (2) whether that fall-arrest system could potentially present safety hazards to other workers on the platform during a fall-arrest condition. This research project investigated those safety concerns with respect to the mast climber stability and the workers using it by creating fall-arrest impact forces that are transmitted to the equipment and by subsequently observing the movement of the mast climber and the working deck used by the workers. This study found that when the equipment was erected and used according to the manufacturer’s recommendations during a fall-arrest condition, destabilizing forces were very small and there were no signs of potential of MCWP collapse. However, potential fall hazards could be presented to other workers on the platform during a fall arrest. Workers near an open platform are advised to wear a personal fall-arrest system to reduce the risk of being ejected. Due to the increasing use of MCWPs at construction sites, there is a corresponding need for evidence and science-based safety guidelines or regulations. To fill the knowledge gap, this research begins to investigate the effects of fall-arrest on the overall stability of a freestanding MCWP and workers while wearing a personal fall-arrest system.

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“…Solmazyiğit et al [1] proposed the construction of and successfully manufactured a scissor lift device that enables lifting loads of up to 25 tons. Pan et al [2] conducted a falling arrest test on a multi-layer scissor lift to check the structural stability, thereby ensuring tip-over safety for the system during the dropping process. Another study by Dong et al [3] on an actual model also shows that the tip-over potential of the scissor lift system depends on the cylinder's speed.…”

Section: Introductionmentioning

confidence: 99%

Applying Parametric Analysis in Enhancing Performance for Double-Layer Scissor Lifts

Dang¹,

Nguyen²,

Nguyen³

2023

sv-jme

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This study presents a calculation procedure of applying the statistical method in determining design parameters for double-layer scissor lifts to improve their operation (e.g., lifting height, loading, stability). By parameterizing the mounting orientation of cylinders, the working of the mechanism is summarized as functions and evaluated. To verify the accuracy of obtained equations, a 2D model of the mechanism was constructed and simulated using Working Model software. The results obtained from the simulation indicate that by adjusting the mounting positions of cylinders, the platform’s position and reactions on the device can be determined, enabling improvement of the system’s performance. The results obtained from the study show the practical significance of applying parametric methods to the calculating process and optimizing the structure of multiple-layer scissor lifts.

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Assessment of Fall-Arrest Systems for Scissor Lift Operators

Cited by 9 publications

References 19 publications

Fall Prevention Research and Practice: A Total Worker Safety Approach

Fall Prevention Research and Practice: A Total Worker Safety Approach

Evaluating the stability of a freestanding Mast Climbing Work Platform

Applying Parametric Analysis in Enhancing Performance for Double-Layer Scissor Lifts

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