VDA - Special characteristics (SC). They can also recommend action that improves the quality of supplier B’s quick-connect device.
Ponder this question: Let’s say you are an OEM and assemble parts made by various suppliers. For a critical part, if there is concern about correct handling, the process team can consider error proofing the process to ensure there is no damage due to incorrect handling. As you point out, those special characteristics are treated in the supplier’s DFMEA and Control Plan. Special characteristics (SC) / A process description covering special characteristics (SC), 1st edition 2011 Short description to VDA Volume “Special characteristics ” This VDA publication serves as a starting point for determining, specifying, tracking, documenting and archiving special characteristics. This question is discussed and answered in this edition of FMEA Q and A.“The key to wisdom is this – constant and frequent questioning, for by doubting we are led to question, by questioning we arrive at the truth.”Peter Abelard Historical data for quick-connects or fuel sub-assembly risk analysis may indicate this exception. If company A is concerned about this special product characteristic (inside diameter of connecting device), and if they choose to make an exception to the assumptions about this incoming part, they can consider changes to their assembly process to accommodate this exception. Here’s the general rule about incoming parts:Excellent question! When performing your Process FMEA, do you consider special characteristics for components in your Process FMEA? If the quick-connect device is critical to their fuel subassembly and they have reason to believe that the device may not meet requirements, they can consider this exception: incoming parts or materials may have variation and do not necessarily meet engineering requirements. In addition, the PFMEA team may wish to consider an exception when historical data indicates incoming part quality issues: incoming parts or materials may have variation and do not necessarily meet engineering requirements.The tree trunk represents the fundamentals of FMEA.
If the fuel subassembly Process FMEA team wishes to make this exception and not assume the incoming quick-connect device meets specifications, they may need to add a step or two to their manufacturing process, or modify existing steps.I think you are making a good point.Please let me know if this answers your question.The leaves of the tree branches represent individual FMEA projects, with a wide variety of FMEA scopes and results.Ponder this question: Let’s say you are an OEM and assemble parts made by various suppliers. Many companies use different markings for these characteristics, such as shields, diamonds, triangles, special abbreviations, etc. Related products.
When performing your Process FMEA, do you consider special characteristics for components in your Process FMEA? and what is a multi-grade oil?what will be the minimum bearing clearance that after it will not profitable for machines?Copyright © 2005-2019 ALLInterview.com. New AIAG & VDA FMEA Handbook. If the concern is with user handling, the team can consider error proofing the user operation.For example, the roots of the tree can represent following philosophy and guiding principles for effective FMEAs, such as:Receive information and updates about articles and many other resources offered by Accendo Reliability by becoming a member. You may be curious about an application issue, or want another view on a challenge you are experiencing. It’s free and only takes a minute.You are correct that you are not influencing the specifications of a purchased part during your assembly process. One of the reasons is that upstream processes should have had an FMEA done on them that would have identified any failures that would affect the current step.With regard to the quick-connect incoming parts from supplier B, company A now has a choice. FMEA, Failure Mode and Effects Analysis . my building height is 10 meter what is Standing pressure. Changes might include measuring the inside diameter, or modifying the process controls to detect and accommodate inside diameter variation. Having done a number of electrical DFMEA projects that provide candidate significant product characteristics, I can say the following. Printed … For a thermo-statically controlled heater switch, one cause of the failure mode “switch stays open” is “thermostatic switch under-rated for the required usage (rated at 30 V DC in 65 V DC application).” The corresponding special characteristic is “switch voltage rating.” The Process FMEA would need to ensure this special characteristic is met, either by controlling the manufacturing process of the heater switch, or in the case of an assembly plant, by ensuring the incoming part meets this special requirement.I do not introduce special characteristics for components in Process FMEA because we have to consider that the component’s that we are buying have to be according with drawing specifications and we are not influencing it in our process.One possible special product characteristic for supplier B’s quick-connect is “inside diameter of the connecting device.” Supplier B would make this a special product characteristic, and identify associated special process characteristic(s) that are needed to control the inside diameter during the quick-connect manufacturing process.
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