Incident & Injury Free
The Hazard Wheel

To help safeguard against serious injury and fatality in the workplace, SPRC uses the human performance-monitoring tool commonly known as the Hazard Wheel. The Hazard wheel is a hazard identification tool designed by Chevron for use by Chevron employees and Chevron joint ventures.


This tool is designed to help personnel involved in high-risk activities to identify and control the significant potential hazards unique to each activity and job. Preventing serious injuries and fatalities requires operational discipline. This means performing every task the right way every time, from initial hazard assessment through each step of the job, including post-activity review.

Biological
Living organisms that can present a hazard.
Examples: animals, bacteria, viruses, insects, blood-borne pathogens, improperly handled food and contaminated water
Chemical
The energy present in chemicals that inherently or through reaction has the potential to create a physical or health hazard to people.
Examples: flammable vapors, reactive hazards, carcinogens or other toxic compounds, corrosives, pyrophorics, combustibles, oxygen-deficient atmospheres, welding fumes and dusts
Temperature
The measurement of differences in the thermal energy of objects or the environment which the human body senses as either heat or cold.
Examples: open flame; ignition sources; hot or cold surfaces, liquids or gases; steam; friction; and general environmental and weather conditions
Pressure
Energy applied by a liquid or gas that has been compressed or is under a vacuum.
Examples: pressure piping, compressed cylinders, control lines, vessels, tanks, hoses and pneumatic
Electrical
The presence and flow of an electric charge.
Examples: power lines, transformers, static charges, lightning, energized equipment, wiring and batteries
Mechanical
The energy of the components of a mechanical system, i.e., rotation, vibration or motion within an otherwise stationary piece of equipment or machinery.
Examples: rotating equipment, compressed springs, drive belts, conveyors and motors
Motion
The change in position of objects or substances.
Examples: vehicle, vessel or equipment movement; flowing water; wind and body positioning when lifting, straining or bending
Gravity
The force caused by the attraction of all other masses to the mass of the earth.
Examples: falling object, collapsing roof and a body tripping or falling
Sound
Sound is produced when a force causes an object or substance to vibrate and the energy is transferred through the substance in waves.
Examples: equipment noise, impact noise, vibration, high-pressure release and the impact of noise to communication
Radiation
The energy emitted from radioactive elements or sources and naturally occurring radioactive materials (NORM).
Examples: lighting issues, welding arcs, solar rays, microwaves, lasers, X-rays and NORM scale

Please note that the Hazard Identification Tool is copyrighted by Chevron. No commercial use, modifications, alterations or derivatives of the Tool may be made without express written permission from Chevron.


© 2012 Chevron U.S.A. Inc. All rights reserved.


Take 5 for IIF