Severity rating
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- This topic has 20 replies, 10 voices, and was last updated 12 years, 4 months ago by
Jonathon Andell.
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February 18, 2010 at 1:22 pm #53295
Hi
In FMEA, on what bases we give rating to severity , occuarnce or detactability to a risk?
Regards
Shailee
0February 18, 2010 at 2:27 pm #189495Severity – VOC and data on customer / regulatory feedbackOccurrence – data on capability and defectsDetectability – MSA and data on escape rates
0February 18, 2010 at 3:45 pm #189499Hi Stan
Thanks for the reply but i m sorry i m not getting ur
answer can u explain or give some example?Regards
Shailee0February 18, 2010 at 4:16 pm #189505Shailee,I’ve got nothing but time to do your work for you.Think about doing some reading for yourself and not expect to be
spoon-fed.0February 18, 2010 at 5:35 pm #189509Keep spoon feeding her Stan. That’ll help. Sometimes I think you just like the exposure.
0February 18, 2010 at 6:38 pm #189515Yep,Exposure for an online persona. Makes me puff my chest out and want to brag about having access to
Minitab 24.You are a frickin genius Marko, you saw right through me.0February 19, 2010 at 9:24 am #189534Hi Stan
The things u told me is as written in the book too but
i was not getting it properly so i asked.
Well thats lot for ur precious time.Hi All
Its still not clear to me can any one explain me.Shailee0February 19, 2010 at 1:02 pm #189537Your question is unclear. So instead of asking you to clarify; I will ramble on what I think you should know.
An FMEA is nothing more than taken qualitative data and transforming it to (pseudo) quantitative data to understand and prioritize risk. But at the end of the day is still comes down to tribal knowledge (not that I have a problem with that if you ask the right person to rate).
Stevo0February 19, 2010 at 3:10 pm #189541Hi Stevo
Thanks a lot for ur reply. Just to confirm , Is there
any rules or standard which we use to rate severity of
the future risk. For eg . If two people rate the same
process risk to 5 and 7 which one will be correct ?
What is the rule or norm that we follow for this
rating ?
Hope this time I successfully explain my question.
Regards
Shailee0February 19, 2010 at 3:20 pm #189543FMEA is not an opinion poll, when we get to the point of it being a
working document vs a checked box (like SIPOC), it is based on data.The rating scales do need to be adjusted based on the industry. For
example, in banking, bringing down the US economy while getting
rich should be rated a 1 while only getting $15 mil out of a possible
$20 mil bonus should be a 10 for severity.0February 19, 2010 at 4:32 pm #189545There should be standards set before the exercise. For example; a 5 = loss of 1,000 customers or 5 = can not detect until customer notification. But that standard is usually set by you. Im sure there are industry recommendations you can research.
Stevo0February 19, 2010 at 4:34 pm #189546Let’s leave banking out of this. The Auto industry is a much better example.
Stevo0February 19, 2010 at 6:12 pm #189550Shailee,
This link provides a straightforward explanation of Severity Ranking ..
http://www.qualitytrainingportal.com/resources/fmea/form_46a_app4mod.htm
Stan,
You had it backwards … bringing down US economy would carry the higher severity (rank of 10 perhaps), while the bonus example would have a rank of 1 (unless it was my bonus).
When we multiply the Severity x Occurence x Prevention/Detection ratings, we arrive at the rpn (Risk Priority Number) … Severity and rpn then drive the priority ranking to address each failure mode … higher Severity/rpn, the more critical the issue.
regards to all
aj0February 19, 2010 at 6:20 pm #189551
Andrew BanksParticipant@BBinNCInclude @BBinNC in your post and this person will
be notified via email.aj:I think you may have missed the sarcasm in Stan’s
message…0February 20, 2010 at 5:19 pm #189565
Ken FeldmanParticipant@DarthInclude @Darth in your post and this person will
be notified via email.Stan, you know full well that I am just completing the Minitab 20 revision so your claim of having Version 24 is blatantly false.As to the poster’s question:
1. First determine the appropriate scale whether it be 1-5, 1-10 or 1,3,9. No right answer here.
2. Determine the appropriate anchors, that is the ends of the scale. In banking, the highest scale may be loss of business. In IT it may be system shutdown. In healthcare it is usually death. On the low end it might be that the customer never notices. You pick it based on what is critical to the organization.
3. Now define the interim scale values or depending on the width of the scale, a few more anchor points. In many cases, you will deal with the high severity instances regardless of the value of the RPN calculation.
4. The occurrence extremes should also be defined and based on some data.
5. Likewise with control.0February 20, 2010 at 7:03 pm #189569I’d be careful here. Marko is on to us.
0February 20, 2010 at 7:22 pm #189570
Stan’s ColonMember@Stan's-ColonInclude @Stan's-Colon in your post and this person will
be notified via email.Stan,
What’s wrong with answering Shailee’s question? Doesnt it take more effort to write a lame remark then just being helpful and giving an honest answer?
This message board is definetly a platform to boost your ego.
-SC0February 20, 2010 at 8:54 pm #189571SC,What’s wrong with answering Shailee’s question? Doesnt it take more
effort to write a lame critique then just being helpful and giving an
honest answer? But then again, you probably don’t know the answer,
do you?What’s wrong with telling the guy to do his own work and use his own
brain? It’s how I learned and still seems to be effective.0February 23, 2010 at 2:47 pm #189617
Jonathon AndellParticipant@Jonathon-AndellInclude @Jonathon-Andell in your post and this person will
be notified via email.Amidst all the flotsam and jetsam of the responses, Darth had the most practical input. Stan said something similar with his sarcastic banking comment, but Darth’s input was straightforward.
0February 23, 2010 at 8:20 pm #189623
MBBinWIParticipant@MBBinWIInclude @MBBinWI in your post and this person will
be notified via email.Jonathan: What are you, the official play-by-play announcer?
0February 23, 2010 at 8:33 pm #189624
Jonathon AndellParticipant@Jonathon-AndellInclude @Jonathon-Andell in your post and this person will
be notified via email.Good one!It just seemed there was a lot of discussion about “me,” “you,” and “him/her” mixed in with some useful facts. I thought I’d try to give the originator of this tangent-laden discussion some idea where to find the answer to the question.If I start sounding like Howard Cosell, it will be time to reconsider things big time!
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