> Broom. The use of a cane broom for detecting a hydrogen fire may sound ridiculous but when
other devices are not available, a broom will provide a device for personnel safety warning. A hydrogen flame is invisible to the human eye. During hydrogen flame tests conducted by the
author using a welding torch laying on the ground, personnel would have walked into the flame unless restrained. When warned, they disbelieved the warning until the heat striations appearing on the ground caused by sun rays shining through the flame were brought to their attention.
> A man required to work on the test stand when the stage is fueled can wave a cane broom in front of his path. If the broom bursts into flame, an invisible hydrogen flame is present.
> Broom. The use of a cane broom for detecting a hydrogen fire may sound ridiculous but when other devices are not available, a broom will provide a device for personnel safety warning. A hydrogen flame is invisible to the human eye. During hydrogen flame tests conducted by the author using a welding torch laying on the ground, personnel would have walked into the flame unless restrained. When warned, they disbelieved the warning until the heat striations appearing on the ground caused by sun rays shining through the flame were brought to their attention.
> A man required to work on the test stand when the stage is fueled can wave a cane broom in front of his path. If the broom bursts into flame, an invisible hydrogen flame is present.