Release of syngas from an ammonia production unit

In an ammonia production unit, a 350-bar leakage of synthesis gas (ammonia + hydrogen)
occurred in the compressor room. The leak was the result of the failure of a weld on a line (2") at the outlet of the compressor.
A flammable cloud formed in the room (15 m x 105 m), 30 to 45 seconds later.
One of the electric motors of the four compressors present was probably at the origin of the ignition, which brought first to an explosion followed by a fire which lasted about ten minutes.
8 people injured, the surrounding buildings were damaged in various ways, as well as the cooling tower and the plant's acid production unit.

the INITIATING cause was the failure of a weld on a line (2 ") at the outlet of a compressor.
The root cause is unknown

ammonia reactor, syngas compressor

8 people injured, the surrounding buildings are damaged in various ways, as is the cooling tower and the plant's acid production unit; property damage was estimated at $ 13.4 million.