In the safety industry there are a lot of phrases, abbreviations and acronyms to keep up with. Let us make your life easier. Here are the most common safety terms you’re likely to come across:

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  • AED – automated external defibrillator
  • AHJ – authority having jurisdiction
  • APF – assigned protection factor
  • APR – air purifying respirator
  • CBRN – chemical, biological, radiological or nuclear
  • CCOHS – Canadian Centre for Occupational Health and Safety
  • CEV – ceiling exposure value
  • CGA – Compressed Gas Association
  • CSA – Canadian Standards Association
  • dB – decibels
    • dB(A) decibels, a-weighting
    • dB(C) decibels, c-weighting
  • EBA – escape breathing apparatus
  • ECGs – electrocardiograms
  • eLearning – online training
  • ELSI – end-of-service-life indicator
  • ESEW – emergency showers and eyewashes
  • FF – fit factor
  • Fit testing – the practice of measuring how effective the seal of a respirator is on a person.
  • FM – factory manual
  • FR – fire resistant/retardant
  • GHS – Globally Harmonized System of Classification and Labeling of Chemicals
  • HEPA – high-efficiency particular adsorber
  • HR – hazard ratio
  • HHR – highest hazard ratio
  • IAQ – indoor air quality
  • IDLH – immediately dangerous to life or health
  • JSA – job safety analysis
  • LC – Labour Canada
  • LEL – low explosive limit
  • LFL – lower flammable limit
  • LFFV – loose-fitting facepiece/visor
  • LMS – learning management system
  • LOTO – lock out, tag out
  • MUC – maximum use concentration
  • N95 – filter rated at 95 per cent efficiency and not for us in oil atmospheres
  • NFPA – National Fire Protection Association
  • NIOSH – National Institute for Occupational Safety and Health
  • OEL – occupational exposure limit
  • OHSA – Occupational Health and Safety Act (Ontario)
  • PAPR – powered air purifying respirator
  • PEL – permissible exposure limit
  • PPE – personal protective equipment
  • QLFT – qualitative fit testing
  • QNFT – quantitative fit testing
  • SaaS– software as a service
  • SAR – supplied-air respirator
  • SCBA – self-contained breathing apparatus
  • SDS – safety data sheet
  • SPCC – spill prevention, control and countermeasures
  • SRD – self-retracting device
  • SRL – self-retracting lifeline
  • STEL – short term exposure limit
  • SWPF – simulated workplace protection factor
  • TC – Transport Canada
  • TLV – threshold limit value
  • TRIF – total recordable incident frequency
  • TRIR – total recordable incident rate
  • TWA – time weight average
  • UEL – upper exposure limit
  • UFL – upper flammable limit
  • UL/ULC – Underwriters Laboratories / Underwriters Laboratories Canada
  • VFSS – vehicle fire suppression system
  • WEEL – workplace environmental exposure limit
  • WHMIS – Workplace Hazardous Materials Information System
  • WPF – workplace protection factor
  • ZAP – zero accident program


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Julie McFater

Director of Marketing

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