The plates of improperly operated or overloaded beam power tubes can sometimes become visibly red hot; this should never occur under normal operation of consumer electronics and is a precursor to tube failure.

The trucks are efficient, but dangerous if operated improperly, said Mr. Frazier.

This simplifies engine management for the pilot, as well as improving reliability, as it prevents the engine being operated improperly.

He stated that the Navy had uncovered no evidence to suggest that the gun had been operated improperly, nor had it established a plausible accidental cause for the explosion.

Chernobyl was poorly designed and improperly operated.

Angela Alioto, a member of the Board of Supervisors, said city officials would investigate the accident, including reports from ironworkers that the crane was being improperly operated.

On April 14, while on patrol, the vessel sank after the toilet was operated improperly.

The police said they did not know whether there was a mechanical malfunction or the ride was operated improperly, but Ms. Cippola's mother, Theresa Cippola, 64, suffered a serious head injury.

(And a court can put an improperly operated building under court administration.)

They said that a laser in the hands of someone who is not properly trained to use it can cause damage, but noted that the same is true of an improperly operated drill.