Employees #1 - #3 were machinists that were in the process of trouble shooting a compressor which had hydrogen in the lines. No actual work was in process. They were only listening for obvious noises which would help diagnose the problem. Employees #4 and #5 were operators who had brought the compressor to the machinists. A common 4" line ruptured, releasing hydrogen to the atmosphere. An explosion and fire occurred as a result. The machinists were killed while the operators were injured and hospitalized.

A leak of a flammable mixture of hydrocarbons and hydrogen from a ruptured pipeline caused an explosion and fire, killing one person and injuring forty six. Investigations into the incident found that emergency procedures were not followed.

An explosion occurred in a water skim tank associated with an ethyl benzene dehydrogenation reactor system. The reaction mixture from the reactors containing styrene, ethylbenzene, benzene, toluene, hydrogen, C02 and steam. Following separation in a "separator", the water layer containing entrained hydrocarbons and styrene polymers, passes to the skin tank where future separation of the two phases taken place. An emergency plant shutdown, due to partial electric power failure, was carried out and the explosion occurred about one hour later.

A fire occurred in a pipe trench containing about 50 pipelines.The pipelines were carrying a wide variety of hydrocarbons from crude oil to residuals. In addition, there were lines with steam, fuel gas, hydrogen, amine solutions and sour water pipelines. Within 10 minutes of the fire, an explosion occurred followed by larger explosions in the pipe trench as pipelines ruptured. The fire spread to a diesel tank. The refinery had to be taken offline. The fires were extinguished after 12 hours. A lagging fire was concluded with excessive oil in the trench.

Alarm received by firefighters around midnight by a resident who heard abnormal noise under the Beaumont Bridge while walking his dog.Perimeter of security set up very quickly with isolation of the section. Pipeline was depressurized within the hour. The pipeline was completely emptied and purged with nitrogen.A security perimeter was established in the night from Sunday to Monday, around 1 am and raised around 5 o'clock. The police banned access to several main arteries of the old town all night, and the inhabitants were confined to their homes.

Two mechanic workers had picked up a work permit for the removal of filters from a hydrogen line. An operator also visited the scene and answered the mechanics question as to whether the line should be de-pressurised and that it indeed should be so. The mechanics replaced the low-pressure side (4 bar) suction strainer at which point they noticed that there was pressure inside the pipe, which they released into the piping leading to the flare. In the afternoon, they carried out a similar filter replacement on the high-pressure side (34 bar).

A fire was sparked by a hydrogen leak at a Goodrich plant around 9:50 a.m. Friday, safety officials said. "Apparently the hydrogen caused a fire when it hit the air," said Chief Alex Rodriguez of the Santa Fe Springs Department of Fire-Rescue. The fire started in a pipe that brings highly combustible hydrogen to the oven. It ignited, he said, likely from just the friction of the gas running out of the pipe.

A ruptured hydrogen line caught fire at a commercial gas plant.