Before delving into the Handbook itself, it is crucial to understand the standard it supports. NFPA 58, titled Liquefied Petroleum Gas Code , is the industry benchmark for the safe storage, handling, transportation, and use of LPG.

One of the most significant changes involves cargo tank truck unloading. The 2020 edition tightens requirements for OPDs to prevent the catastrophic release of liquid propane during transfer. The handbook provides extensive commentary and diagrams showing exactly how the new internal valves must function to eliminate human error during high-volume transfers.

The NFPA 58 Handbook (2020 Edition) serves as the definitive guide for professionals working with liquefied petroleum gas (LP-Gas). While the NFPA 58 Code itself provides the mandatory rules, the Handbook is designed to bridge the gap between technical requirements and real-world application. It offers a deeper look at the "why" behind the safety standards, making it an indispensable tool for designers, engineers, and inspectors.