What color signifies potential hazards from gas, oil, or steam underground?

• A. Red
• B. Yellow
• C. Blue
• D. Purple

Answer: (B)

The color that signifies potential hazards from gas, oil, or steam underground is yellow. In the context of pipeline construction and maintenance, yellow is specifically used to indicate buried hazardous materials such as natural gas, oil, and other resources that can present significant risks to both workers and the environment if disturbed. This color coding is part of a standardized system that helps ensure safety by making it clear to personnel where potential dangers lie, allowing for appropriate caution to be taken.

The use of yellow for hazardous materials is critical in the field to prevent accidents and inform workers about the need for protective measures when working near these types of underground utilities. By being aware of and adhering to these color codes, inspectors and construction teams can better manage safety protocols and minimize risks associated with pipeline operations.