Fatalities in the Oil and Gas Extraction Industry (FOG)

Key FOG Variable Descriptions

The FOG database collects several different types of information (i.e., variables) on each fatal incident and each worker who died in the incident. Variables about the incident are those that would be common to all fatalities associated with the incident, such as the date the event occurred and the location of the incident. Other variables are specific to each fatally injured worker, such as the worker’s age, years of experience, and cause of the fatality.

Below are the definitions for key FOG variables; these are the most commonly reported variables in FOG datasets, publications, and products.

Incident level variables: Phase of Operation

Operations are distinct stages or processes in oil and gas extraction. In FOG, each incident is assigned one operation. In instances where more than one operation is occurring, precedence will be given to the operation that primarily contributed to the fatal event. In some cases, it may not be possible to identify the operation due to the limitations of available data.

The definition of each FOG operation is below. Note: The definition does not include the explanation of technical terms (see Resources for this information).

Phase of Operation

Page last reviewed: May 8, 2020