Question

Kau shaft mine situated in Welkom has 90 mine workers who works underground daily. They use a lift to go underground and come back to surface. On Tuesday 12th October 2023, the lift transported 70 workers from surface to underground and came back to collect the remaining workers. On its way up at 6 am it stopped due to failure and the technician were called to fix the problem. At 9 am the problem was fixed and the lift managed to reach surface to collect the remaining workers. Use this one day information determine the following: a) System Average Interruption Frequency Index. b) System Average Interruption Duration Index. c) Customer Average Interruption Frequency Index. d) Customer Average Interruption Duration Index.

          Kau shaft mine situated in Welkom has 90 mine workers who works underground daily. They use a lift to go underground and come back to surface. On Tuesday 12th October 2023, the lift transported 70 workers from surface to underground and came back to collect the remaining workers. On its way up at 6 am it stopped due to failure and the technician were called to fix the problem. At 9 am the problem was fixed and the lift managed to reach surface to collect the remaining workers. Use this one day information determine the following:
a) System Average Interruption Frequency Index.
b) System Average Interruption Duration Index.
c) Customer Average Interruption Frequency Index.
d) Customer Average Interruption Duration Index.

Kau shaft mine situated in Welkom has 90 mine workers who works underground daily. They use a lift to go underground and come back to surface. On Tuesday 12th October 2023, the lift transported 70 workers from surface to underground and came back to collect the remaining workers. On its way up at 6 am it stopped due to failure and the technician were called to fix the problem. At 9 am the problem was fixed and the lift managed to reach surface to collect the remaining workers. Use this one day information determine the following:
a) System Average Interruption Frequency Index.
b) System Average Interruption Duration Index.
c) Customer Average Interruption Frequency Index.
d) Customer Average Interruption Duration Index.

Added by Marina B.

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