Pipeline/vent markers are required to state

• A. The product name only
• B. The product name and owner phone number
• C. The owner’s contact email
• D. The shipping date

Answer: (B)

Markers on pipelines and vents must quickly tell responders both what substance is in the line and how to reach the responsible party. The product name identifies the material, signaling its hazards and the appropriate response, while the owner’s phone number provides a direct way to contact someone who can give specifics about the product, quantities, and required shutdown or containment actions. A shipping date doesn’t contribute to hazard recognition or emergency coordination, and an email address isn’t as reliable for real-time communication during an incident. So, the best practice is to display both the product name and the owner’s phone number to support immediate identification and rapid notification.