You should provide the severity scale.SoftwareEng said:"You are doing an FMEA on an engine control system for an on-highway truck/bus. You are considering a failure mode where the engine dies without any warning. What severity do you give this item, and why?"
jmp4429 said:Either way, I would rank it very high for the reasons stated above. Here, we rank engine failure with warning a 9 out of 10 for severity. If the failure could occur without warning, we rank it a 10.
Lee said:Yes - I agree. I had originally placed the rating at very high but when I submitted the FMEA, I was told (by my Customer) to change it.
Lee said:The severity (as I was told) depends upon who the next customer is. For my example: I was a Tier 2 supplier (at the time) of airbag filters. The Filter went into the Airbag Module (my Customer's product) that was sold to GM for production vehicles. My Customer told me that the severity rating of my Filter failing was not very high because I was not the Tier 1 supplier. My Customer's FMEA was the final "say" and that FMEA rated it as a very high rating. Like a good little soldier, I did what my Customer told me to do and left that potential failure at a medium failure (Middle of the scale).
Does that sound wrong to anyone?