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The spectrometers (and Hall A in general) are
protected by a VESDA smoke detection system. The head sensitivity of the VESDA
is 0.03 to 0.003 . This corresponds to approximately 1 of full scale
and the system trips at 90 full scale. The spectrometers clean power is
interlocked with the VESDA system. In addition, there is a sprinkler system on
both spectrometers that is temperature actuated. Finally, both detector huts have gas
monitors which are sensitive to Ethane gas leaks.
10/13/1997