Questions and answers from FMEA webinar #3Q: I was wondering if you have a case study in your book that starts from system FMEA and drilldown to the sub-system and component level?A: Appendix G of SAE J1739 includes three brief Design FMEA excerpts: vehicle steering system,power steering pump subsystem, and a driveshaft component. These excerpts are also publishedas a case study in Figure 8.25, pages 217 to 220 of Effective FMEAs.Q: Do you have an example of a vehicle level FMEA drilled down to component level detailingdesign functional attributes and how each are mitigated or controlled.A: In addition to the three brief FMEA excerpts mentioned above, the book Effective FMEAs usesa Bicycle System FMEA, Hand Brake Subsystem Design FMEA and Brake Cable Design FMEA toshow the progression of FMEAs from system, to subsystem to component. The book also haseight other Design FMEA case studies that provide insight into the mitigations and controls ofdesign functional attributes through the use of FMEA.Q: FMEA is a strong requirements for automotive industry specially for semiconductor industry,any advice how do we start specially for fabless companyA: This was discussed in part during the Webinar. Companies with responsibility for fablesssemiconductors will need to do Design FMEAs to ensure the fabless design is robust and highlyreliable. The company who is doing the manufacturing of the semiconductor should do theProcess FMEA, with results reviewed by the fabless semiconductor company.Q: Carl, shouldnt a FMEA be a living document and updated with field experience as the productlife goes on?A: Yes. This was answered during the Webinar.Q: Any comments on APIS softwareA: This was answered during the Webinar.Q: Do you have information on how to build a collection of FMEAs for a very large global companywith many different teams, how to ensure all global teams have access AND use them, etc.?A: This was answered during the Webinar.Q: my question is, what would be a good or standard time to spend on an FMEA?A: This was answered during the Webinar.Q: In your first class-The 10 most common FMEA mistakes-the 10th mistake was:Lack of efficientuse of time.A: For some reason this question arrived incomplete. Please email me atCarl.Carlson@EffectiveFMEAs.com with any additional information to ensure the question iscomplete.Q: What are good measures of FMEA effectiveness? (RPN Reduction?)A: This was answered during the Webinar.Q: Is there a template/ example of an MSAcess FMEA available?
A: Xfmea software, by ReliaSoft has a library of many FMEA templates and examples built into thesoftware. Xfmea uses MS Access as the underlying platform.Q: What are your suggestions when a company does not have all the requirements foraccomplishing a good FMEA?A: This was discussed in part during the Webinar. Few companies have all the elements ofeffective FMEAs in place before beginning FMEA programs. I would suggest working withmanagement to decide how to begin implementing needed FMEAs, while at the same timeestablishing the strategies and resources that are needed to ensure an effective FMEA program.Q: Isnt an FMEA a "living document"?A: This was answered during the Webinar.Q: quantify a hi risk issue value???A: There are two different forms of risk in the RPN number: high severity regardless of RPN, andhigh RPN by itself. Targeting only RPN misses the potential risk of high severity – low RPN issues,which can devastate a company. Some companies choose to provide target values or “thresholds”for RPN, where action is mandated if RPN exceeds the target value. There is no problem withensuring that items with high severity or high RPN values get added review. However, mandatingaction for RPN above a threshold has the potential of a numbers game. The best practice is to firstensure that all high-severity items are addressed regardless of RPN; and then to address all high-RPN items, beginning with the highest and continuing until the FMEA team and management issatisfied that risk is reduced to an acceptable level. See section 7.1 “Prioritize Issues forCorrective Action,” pages 163 to 165 in Effective FMEAs."Q: What are the best ways to obtain management buy in to develop FMEA process?A: This was answered during the Webinar.Q: Do you have a case study on FMEA done on software Projects and if available please share?A: This was answered during the Webinar. Chapter 15 of the book Effective FMEAs coversSoftware FMEAs including examples.Q: What is a typical/average time to complete a FMEA? Hours/Days/Weeks/Months?A: This was answered during the Webinar.