Versions Compared

Old Version 26

changes.mady.by.user user-a529c

Saved on

compared with

New Version 27

changes.mady.by.user user-a529c

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Humans can only handle so much information at a time. According to the ISA SP 18.2 Standard, project operators should only face about 10 alarms per hour in order to accurately respond to each alarm. However, this the alarm rate is usually higher in the real world. 

...

Detailed below are several proven operator performance results from the High Performance HMI Handbook



Traditional

HMI

High performancePerformance

HMI

Results

Detecting abnormal

situations before alarms occur

 

1 in 10 occurrences

 

5 in 10 occurrences

 

5x improvement

Success rate handling

abnormal situations

70%

96%

37% improvement

Time to complete

abnormal situation tasks

18.1 minutes

10.6 minutes

41% improvement

...