Missing 1m visual alarm signal in case of software/display failure, mitigation?

P

purplehaze

Registered
#1
#1
In case of a software/display failure of a class 3 device the 1m visual alarm signals will no longer visible but there might be things the user needs to act on real quick. Are there best practices to mitigate this risk before the user is able to exchange the device (e.g. LEDs next to symbols describing certain critical alarm causes) or is this most likely a residual risk? IMO the LED's solution is really hard to justify from a HF point of view.

I'm sorry if this question is too specific, I'm happy for any feedback.
 
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T

Tidge

Trusted Information Resource
#3
#3
I suspect you may be venturing down the path of multiple-fault conditions.

Alarms signals typically have both an audible and visual component, presumably for circumstances such as this.
 
P

purplehaze

Registered
#4
#4
Thanks for your answers, I think we have to evaluate this in a formative as mentioned. It's crazy which situations you sometimes find in the risk assessment.
 
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