Failure modes and effects analysis (FMEA)
2006-11-13 01:51:09 · 3 answers · asked by Timdel 2 in Science & Mathematics ➔ Engineering
Think of all the functions a smoke alarm has and think of the effect of a failure of each. Here are most of them (I think):
Power supply (house power or battery) - no alarm
Light source for smoke sensor - no alarm or false alarm
Light measurement for smoke sensor - no alarm or false alarm
Test button - no test or false alarm
Circuit to trigger alarm based on smoke sensor or test button - no test, no alarm or false alarm
Alarm buzzer - no alarm
Battery indicator light - no alarm or unnecessary battery replacement
You may well be able to think of others. If the analysis also includes identification of the failed function, the next step would be a table, flowchart or map that takes the technician from a description of symptoms to further testing if needed and identification of the suspect function(s).
2006-11-13 02:59:19 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋
failure mode = no batteries
effect = does not detect smoke, people die
RPN = off the bloody scale
2006-11-13 01:53:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
that is a very interesting question and i think you should consult a professional
2006-11-13 01:52:44 · answer #3 · answered by caddy 2 · 0⤊ 0⤋