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Video Exposure Monitoring as a Tool to Identify and Evaluate Exposures in Oil and Gas Exploration and
Production (E&P)
Bradley King, John Snawder, Eric Esswein, Mike Breitenstein, Belinda Johnson.National Institute for Occupational Safety and Health (NIOSH)
Disclaimer: The findings and conclusions in this presentation are those of the author(s) and do not necessarily represent the views of the
National Institute for Occupational Safety and Health.
Mention of company names and/or products does not constitute endorsement by the National Institute for Occupational Safety and
Health.
November 29-30, 2016
• Traditional exposure assessment: integrated sampling in the personal breathing zone (PBZ) of a worker over a specified period of time:
• air drawn through a filter or other collection medium
• known flow rate by means of a battery powered pump
• measured period of time
• medium is analyzed
• average exposure during the sampling period is computed
HOWEVER…
November 29-30, 2016
• Integrated air sampling provides little insight into the specific causes of the worker's exposure
• Recommendations for controlling exposures:
• often based upon an observer's judgment
• can result in implementation of control measures that do not address the major worker air contaminant exposure sources
November 29-30, 2016
• Direct reading instruments and data recording devices can be used as a part of a system for data‐logging events and exposures in the workplace as a function of time.
• The data can be used to:
• Show rapid changes in concentrations of contaminants in air• Associate events/activities and exposures• Promote more effective and focused recommendations for
controlling the air contaminant exposures
• Obvious need: best ways to communicate exposure assessment results to workers and to management?
• a video recording of the work activity combined with a display of the real‐time exposure measurement
• the data could be presented in two forms:1. numerically2. graphically
November 29-30, 2016
November 29-30, 2016
NIOSH Publication Number: 92‐104
• August 1992
• Outlines techniques for conducting VEM
• Describes equipment required
• Discusses analysis of real‐time exposure data
• Provides case studies
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NIOSH Publication Number:RI‐9696
• July 2014
• Describes process to perform Helmet‐CAM survey
• Developed for mining environment at surface mines
• Combines helmet‐mounted camera with data‐logging aerosol monitor
November 29-30, 2016
NIOSH Publication Number:RI‐9696
• Disadvantages in past:• Video and sampling
equipment cumbersome and large
• Output limited because of direct overlay of data onto video
• Advantages currently:• Miniaturization of sampling
and video equipment• Video and sampling data in
digital format • Prompted software
development
November 29-30, 2016
The Enhanced Video Analysis of Dust Exposures (EVADE) software program merges video files and logged data files, allowing the user to view them simultaneously to help identify exposure sources.
November 29-30, 2016ROCKproducts journal article, October 2014
New features for EVADE 2.0 Beta include:
• Expansion beyond just dust exposure
• Multiple channels• Advanced windowing interface• Redesigned project editor• Share a project• Basic data analyses• Improved installation program
November 29-30, 2016
November 29-30, 2016
November 29-30, 2016
Worker opening a production tank thief hatch prior to tank gauging
November 29-30, 2016
Worker opening a production tank thief hatch prior to tank gauging
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Worker transferring mercaptan odorant
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Pointer to Remember when using EVADE:
• Timing is crucial!• Start video camera and logging equipment simultaneously• Ensure internal clocks of equipment are identical• Collect second‐by‐second data for exposures
• File formats: • .avi (or) .mp4 [movies]• .csv (comma separated value) [exposure data logged file]
• Consider job tasks involved and need for intrinsically safe equipment
• Camera battery life likely no greater than 2–4 hours
• Great training tool!
November 29-30, 2016AIHA Synergist journal article, March 2013
November 29-30, 2016
Bradley [email protected], 303‐236‐5933
NIOSH Oil & Gas Homepage www.cdc.gov/niosh/programs/oilgas
Follow us on Twitter: @NIOSHOilandGas
QUESTIONS?
