Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status

Details

• Alternative Title:
  Forests
• Personal Author:
  Wempe, Ann M. ; Keefe, Robert F.
• Description:
  Logging continues to rank among the most lethal occupations in the United States. Though the hazards associated with fatalities are well-documented and safe distances from hazards is a common theme in safety education, positional relationships between workers and hazards have not been quantified previously. Using GNSS-RF (Global Navigation Satellite System-Radio Frequency) transponders that allow real-time monitoring of personnel, we collected positioning data for rigging crew workers and three common cable logging hazards: a log loader, skyline carriage, and snag. We summarized distances between all ground workers and each hazard on three active operations and estimated the proportion of time crew occupied higher-risk areas, as represented by geofences. We then assessed the extent to which positioning error associated with different stand conditions affected perceived worker safety status by applying error sampled in a separate, controlled field experiment to the operational data. Root mean squared error was estimated at 11.08 m in mature stands and 3.37 m in clearcuts. Simulated error expected for mature stands altered safety status in six of nine treatment combinations, whereas error expected for clearcuts affected only one. Our results show that canopy-associated GNSS error affects real-time geofence safety applications when using single-constellation American Global Positioning System transponders.
• Keywords:
  Chlorination Geofences GNSS-RF GNSS Positioning Error GPS Household Water Treatment Logging Safety Safe Water Storage
• Source:
  Forests. 8(10)
• Pubmed ID:
  30976381
• Pubmed Central ID:
  PMC6456079
• Document Type:
  Journal Article
• Funding:
  U01 OH010841/OH/NIOSH CDC HHSUnited States/ ; U01OH010841/ACL HHSUnited States/
• Volume:
  8
• Issue:
  10
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:b6bfe4684a4b3d4665845cdfb71440c3b49bd98f125704a32ee4f4216697d010
• Download URL:
  https://stacks.cdc.gov/view/cdc/77586/cdc_77586_DS1.pdf
• File Type:
  [PDF - 1.29 MB ]