Coverage
If the common property insurance (property all risks, industrial all risks…) cover for “external causes” to machines such as fire, storm… this insurance will cover property against unforeseen physical loss or damage from causes such as defects in casting and material, faulty design, faults at workshop or in erection, bad workmanship, lack of skill, carelessness, shortage of water in boilers, physical explosion, tearing apart on account of centrifugal force, short-circuit, storm…