The EPA Risk Management Plan (RMP) rule applies to the storage and use of listed substances including liquid hydrogen when the inventory of the process equals or exceeds 10,000 lbs. This publication provides information and expert guidance to help liquid hydrogen users comply with the RMP rule. It includes a typical system flow diagram, a typical hazard and operability (HAZOP) study, and information, tables, and charts to help users of liquid hydrogen carry out the required hazard assessment efficiently. The tables and charts allow the user to look up worst-case and alternative-case distances directly.
Fourth edition published in 2014. Available at https://portal.cganet.com/Publication/Details.aspx?id=P-28. Activity for the 5th edition has begun.