Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he quickly built his own device from an organ pipe and spectacle lenses.

You could break a steam generator tube, you could break an instrument line and you could have a spectrum of pipe breaks in a BWR inside of containment.

An urgent shutdown fault of a liquid-product air separation unit, due to water penetration into instrument gas pipe, is introduced. Corresponding treatment and precautions are also proposed.