Health Hazard Evaluation Report: HETA-2008-0293-3132, June 2011. Ergonomic Evaluation of Automatic Flat Sorting Machines - Colorado

摘要

On September 16, 2008, NIOSH received an HHE request from employees at a postal facility in Colorado. The request was submitted because of potential ergonomic hazards among workers using the AFSM 100 machines. During April 1-3, 2009, NIOSH investigators evaluated the postal facility. We observed work processes, practices, and workplace conditions. We measured workstation design parameters and collected video of loading, prepping, and sweeping tasks. We also reviewed medical records related to work injuries and talked with employees privately about their health and workplace concerns. We found that employees were exposed to risk factors for developing upper extremity WMSDs (including awkward postures, forceful exertions, and repetitive motions), and back injuries (including lifting, twisting movements of the trunk, and bending at the waist). Interviews with employees and review of OSHA Form 300 Log of Work-Related Injuries and Illnesses for 2005-2009 confirmed that the most common WMSD injuries were to the upper extremities and back. Recommendations for reducing the risk of WMSDs, including improved workplace design and rotation patterns are included in this report.