Underground gas piping for industrial facilities must be encased in approved conduit.

• A. Buried directly
• B. Encased in approved conduit
• C. Wrapped in insulation
• D. Painted yellow

Answer: (B)

Protecting underground gas piping from damage and environmental exposure is essential in industrial settings. Encasing the pipe in approved conduit provides a durable physical barrier that shields it from impacts by equipment, backfill movement, and soil abrasion, while also helping to guard against moisture intrusion and corrosion. The conduit creates a defined, inspectable pathway that simplifies future maintenance or replacement. Burying the pipe directly leaves it vulnerable to rocks, heavy machinery, and soil shifts and makes inspections and repairs more hazardous. Wrapping in insulation doesn’t protect against mechanical damage, and painting it yellow is only a marking that indicates gas lines but offers no actual protection. Encasing in approved conduit is therefore the safety-focused choice.