PFMEA (Process FMEA) - What is the best approach?

[mayank_thkkr]

Hi,

We are in dilemma with following situation.

Ours is a EPC company dealing in Power Projects. We do not have standard component, rather similar components are prepared on daily basis but the dimensions, design, specification, construction are different based on project requirement. But common thing is we follow similar manufacturing process (Not is same sequence) i.e Different Welding Processes, Machining, Painting etc.

The time between Design Release and Start of Manufacturing is very less.

Now the Question is Considering the organization Business Model what will be the best approach for PFMEA ?

Option 1 : Do PFMEA on Manufacturing Process (i.e Welding ) and improve it ?

Option 2 : Do PFMEA on every component before start of manufacturing ?

Want your thoughts on pro / cons of both the approach ?

Thanks


MT

[VBABU]

Hi,

First of all list out process & Freeze Process code (Like.5,10....) & choose the Option 1


With Regards

V.BABU

[ssz102]

PFMEA is aim of find out potential defective or dangers and continuouslly improvement these defective process
so you can development a PFEMA for every parts instead of every station; when prepare PFMEA, generally, done it before pilot production

[VBABU]

Yes, But A successful FMEA helps a team to identify potential failure modes based on past experience with similar Processes, enabling the team to design those failures out of the system with the minimum of effort and resource expenditure, thereby reducing development time and costs

WITH REGARDS

V.BABU

[DrM2u]

There are many threads on the topic of PFMEA: when, how, who, etc. In a nutshell, the usual sequence of activities is:
Process plan (or Process Flow Diagram) -> Process FMEA -> Process Control Plan
These activities often overlap, but it is not advisable to overlap CP with PFD and skip PFMEA.

Now, to come back to your question. As the name implies, the PFMEA is done for Processes not for Product. That means, in cand be done for the processes specific to a product or for processes common to a family of products (like it seems to be your case from your description). The PFMEA can be performed one for all the processes or separate ones for each process. I like the second method because it keeps the documents smaller and easier to control, and gives more flexibility when combining processes to address specific needs. It is highly desirable to perform the planning before you start production, but it is never too late do document your processes and improve them using these tools.

Best of luck!

[Apoch]

This is how we do it in our manufacturing company.
We start with understanding the voice of the customer (VoC) in which specific requirements are identified. These shall then be translated to product and process characteristics which are guided with the use of DFMEA and PFMEA respectively. Controls identified in the FMEA process shall then be further translated to a Process Control Plan.