A hydrogen leakage caught fire in the hydrogen compressor area of the continuous reforming unit. The reforming unit and the hydrocracking unit were immediately stopped. The hydrogen flow was cut off, a protective combustion was carried out and the fire was completely extinguished after approximately 20 minutes, with no casualties. The cause of the accident is being investigated.

The broke out at a hydrogen compressor of the reforming unit of the refinery. Following the safety procedures, the emergency stop of the unit was activated and the unit was decompressed using a safety flare. The emergency plan was kept for an hour. A security perimeter is in place. The isolation of the compressor was started automatically. The isolation of the discharge circuit was successful, but the suction circuit could only be partially closed due to a block of a valve. The operators then closed manually the suction valve, by removing the excess of grease that had been applied to it.

The day before the incident, the outlet pipe connected to methanation reactor started leaking gas, which contains hydrogen. The leak was temporarily eliminated by a pressurised plug. On the day of the incident, the pipe leaked again, and the same plugging method was still used to stop the leak. This occurred without shutting down the unit and taking safety measures. Approximately one hour later, a sudden explosion occurred at the inlet line of the methanation reactor.

The incident took place on the reforming furnace unit of the plant. Around 23:30 pm, during a normal inspection tour, an operator detected a fire on a section of a steam line. He immediately informed the control room. A reduction in the rate of the unit is was not worsening. Steam hoses were used in the direction of the flame and the identified hot spots. The next morning at around 6:00 am, the unit was progressively shut down and the fire extinguished.The reforming furnace unit consisted of 198 tubes containing a catalyst.

The release occurred on a pipeline inside a steam cracking unit located between two hydrogenation units. The gaseous mixture transported through this line (2" diameter, 30 bar, 40C) was composed of 95% hydrogen, 4% methane and 1% nitrogen. The line was located in a rack within the cold sector, at a height of 6 m. The personnel shut down the steam cracker and isolated the sector and the units cuts were sent to the flare system.

An explosion and fire occurred at a hydrogen production plant serving the hydrocracker and the diesel hydroteater of a nearby refineryNo injuries were reported among the employees.According to the plant owner, the incident occurred in the collection manifold, also referred to as a collection header or a transfer line, due to the failure of an external carbon steel pipe of the collection manifold.

The accident happened in a refinery unit, constructed ten years before. A pigtail ruptured in a steam reformer for the production of hydrogen, and caused a major fire, which destroyed most of the tubes (54) in one quadrant of the large steam-methane reformer furnace. No personnel was hurt. Main causes were bad weld quality and shortening of pigtails over the life of the plant, which significantly increased the cyclic stress at the root of the weld from thermal expansion and tube bowing.

An explosion in oil from a coal plant occurred as a gas unit which turns methane into carbon monoxide and hydrogen was being reactivated.

The event occurred just after that start-up steam was introduced into the reformer furnace inlet. At this moment an very high pressure and a single loud bang was reported by the operations personnel on the furnace structure. An emergency shutdown of the furnace was initiated and the start up aborted. At the time of the incident there were 7 people on the furnace. Four were operations staff plus three maintenance personnel.

The explosion occurred at the hydrogen producing unit of a refinery.A solution of potassium carbonate was being drawn off from an absorption tower to a temporary storage tank for a turnaround shutdown maintenance. The tank exploded, due to backflow of hydrogen into the tank. The level of the solution in the tower was not checked. When a water solution in an absorption tower for carbonic acid gas is drawn off, the water level of the solution drops. This drop \was ignored and the pump cavitated.