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Manual Tasks -- Tight Space

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GT had worked for many years as a deckhand. Periodically, he was
called to assist in cleaning holds. GT was a large man, weighing
close to 300 pounds. Access to the areas in the hold requiring maintenance
was not easy. In one compartment, there was an opening in the bulkhead
that facilitated cleaning the adjacent area. GT bent over and extended
his head, arms, and upper torso through the opening. Shortly after
doing so, he reported that he suddenly experienced lower back pain.
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HF Issues: Could the posture adopted by GT increase the
risk of injury to his lower back?
Was the task designed with adequate consideration given to the
characteristics and limitations of the workers?
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HF Analysis: Information obtained included, but was not
limited to: GT's height and weight; and the dimensions of the bulkhead,
opening, and compartment.
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| HF Analysis: A scale 3D computer
model of GT and the accident site was generated. The model was used
as an aid in assessing postures and clearances. Once the likely range
of postures was established, a computer application (MannequinPRO)
was used to estimate the torque on the lower back for the different
postures. |
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2934
Steamboat Island NW
Olympia,
WA 98502
www.gdsloan.com
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This
material may be used freely provided you
reference this source:
G. David Sloan, Inc., 1999, www.gdsloan.com, Olympia, WA, USA
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Site
design by Alex Gheorghiu, Chuck Mathison & Pam Johnson
Olympia, WA
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