(attention: incomplete translation!)

In a meat packing unit, 200 kg of ammonia (NH3) leaked at 4.30 pm from a corroded pipe of a refrigeration unit (900 kg of NH3) cooling two ham and sausage dryers.

According to [an expert], the corrosion was due to a flaw in the assembly of the heat insulator: the steel of the insulator was not protected by a petrolatum tape or a pitch layer. The corrosion went undetected since the heat insulator showed no signs of damage. The rusted pipes were replaced and the internal action plan was drafted into a written procedure. The operator planned to replace the refrigerant.