What is UL 971

UL 971, also known as the Standard for Safety for Nonmetallic Underground Piping for Flammable Liquids, is a technical standard developed by Underwriters Laboratories (UL) to ensure safe and reliable installation of nonmetallic underground piping systems for flammable liquids.

Importance of UL 971

UL 971 plays a crucial role in the safe transportation and storage of flammable liquids. It provides guidelines and requirements for manufacturers, installers, and users of nonmetallic underground piping systems, aiming to prevent leaks, spills, and other hazardous incidents that could lead to fires and environmental contamination.

This standard ensures that these piping systems are tested and certified by UL, ensuring compliance with specific safety criteria, such as resistance to corrosion, hydrostatic strength, and chemical compatibility. Compliance with UL 971 gives confidence to users that the products they are utilizing meet high-quality standards and reduce potential risks.

Scope and Requirements of UL 971

UL 971 covers a wide range of nonmetallic underground piping systems, including but not limited to fiberglass-reinforced thermosetting plastic (FRP) piping, polyethylene (PE) piping, and composite piping. The standard specifies various requirements such as pipe materials, manufacturing processes, pipe markings, and testing procedures.

In order to achieve UL certification, manufacturers must undergo rigorous testing and evaluation according to the specific requirements outlined in UL 971. This ensures that the piping systems exhibit the necessary mechanical strength, chemical resistance, and structural integrity needed to safely transport flammable liquids underground.

The Benefits of UL 971

Adherence to UL 971 offers multiple benefits to both manufacturers and end-users. For manufacturers, it provides a competitive edge by demonstrating compliance with recognized safety standards, giving their products credibility and reliability. This increases customer trust and may result in increased market share.

For end-users, such as fuel suppliers, chemical processing plants, and others handling flammable liquids, UL 971 certification guarantees that they are installing high-quality, safe piping systems. Compliance contributes to improved operational efficiency, reduced risk of leaks and accidents, and enhanced protection for people, property, and the environment.

In conclusion, UL 971 is a critical technical standard ensuring the safe installation of nonmetallic underground piping systems for flammable liquids. Its importance lies in establishing guidelines for manufacturers, installers, and users to prevent hazardous incidents. Compliance with UL 971 brings numerous benefits, including increased safety, reliability, and confidence in the use of these piping systems.