The testing provided data to allow the ability of Computational Fluid Dynamics (CFD) modelling to predict accumulation of natural gas from transient releases and temporal and spatial variations in explosion loading. Strain and pressure data was also gained on the structural response to allow assessment of structural modelling. 

This report is developed as a part of the project “EMSA study investigating the safety of hydrogen as fuel on ships”. The overall objective of the project is to carry out a structured set of safety assessments and reliability analyses,delivering a Guidance document addressing ships using hydrogen as fuel. The purpose is to assist the industry and the regulators towards a safe and harmonised deployment of this relevant technology that could demonstrate an important step towards decarbonisation of the sector.

The purpose of this action is to make changes to the Risk Management Program (RMP) rule in order to improve safety at facilities that use and distribute hazardous chemicals. Because major and other serious and concerning RMP accidents continue to occur, this final rule aims to better identify and further regulate risky facilities to prevent accidental releases before they can occur.

On March 11, 2024, the U.S. Environmental Protection Agency (EPA) published the much-anticipated Safer Communities by Chemical Accident Prevention Rule (SCCAP) Final Rule, an update to EPA’s Risk Management Program (RMP) 40 CFR Part 68, under the Clean Air Act Amendments of 1990 (CAA). This is the first substantial change to the rule since its inception in 1996.

How cryogenic containers workCondensation/StratificationEvaporationLiquid GrowthCryogenic TanksInsulation Methods

The "draft" technical paper provides a brief gap analysis of the Codes and Standards for Delayed Ignition with a focus on discharge of warm gas and thermal radiation and impingement.

The "draft" report briefly discusses two distinctly different scenarios that create overpressure from an external release of hydrogen into an ambient air environment: Delayed ignition from a pressurized release and Delayed ignition of a flammable gas cloud.

VIII.10  Hydrogen Safety Panel

The Hydrogen Safety Panel was tasked with conducting work under the project “Hydrogen Safety Panel Review of Department of Energy’s Fuel Cell Projects,” through memorandum purchase order DCO-0-40618-01 with the National Renewable Energy Laboratory using American Recovery and Reinvestment Act (ARRA) funding.  Panel members reviewed project safety plans, conducted safety review site visits for selected projects, and prepared safety evaluation reports for the sites visited that included safety recommendations for the project teams.

This document and its companion document, Safety Standard for Oxygen and Oxygen Systems (NSS1740.151996),are identified as Tier 2 Standards and Technical Requirements in the NASA Safety and Documentation Tree (NHB 1700.1 1993). The information presented is intended as a reference to hydrogen design and practice and not as an authorizing document. The words "shall" and "must" are used in this document to indicate a mandatory requirement, and the authority for the requirement is given.