What is the requirement for the discharge direction of safety relief valves on LP gas containers of over 125 gallons?

The requirement for the discharge direction of safety relief valves on LP gas containers over 125 gallons is that they must discharge vertically upward with loose-fitted rain caps. This is crucial because safety relief valves are designed to release excess pressure that may build up in the container to prevent catastrophic failure. Directing the discharge upward minimizes the risk of gas accumulating near the ground, which could pose a hazard to people or structures.

Loose-fitted rain caps provide protection against debris entering the valve while still allowing for unrestricted gas flow during operation. This design ensures that the gas safely disperses into the atmosphere, reducing the risk of fire or explosion. By adhering to this requirement, safety measures are enhanced in the operation of LP gas systems, providing peace of mind and promoting safety in environments where these containers are used.