Hi,

My boss has asked me to write 'Process Specification' document. The document should consist of all those general parameters which need to be controlled during the manufacturing process. Only general requirements should be mentioned in the documents such as production environment, process time, curing temperature, minimum torque etc, and not part level requirements.

Has anyone ever made any document like that, and willing to share document / template. I already have the Process Flow diagram and I am thinking of making separate Process Specs. for each sub process. any suggestions ???

cheers

I believe you are referring to 'Quality Plans'. There is a long list in out 'Post Attachments List' (http://elsmar.com/Forums/fileslist.php?mode=allfiles&sortby=filename&pageamt=2&criteria=quality+plan). Choose one that suits your business. This simple one is commonly used over here (http://elsmar.com/Forums/attachment.php?attachmentid=5592).

I interpret a process specification as a guideline for the operator of the process. The process engineers has determined what the normal operating limits are and documents this in the spec. sheet.

This spec. allows the operator to control the process within the limits set in the spec. The operator would need "permission" to go outside this range.

Spec. like this are typical for injection molding, extrusion and grinding operations. The variation in input materials and ambient conditions require the operator to make small adjustment to keep the process on target when it starts to drift.

It is usually combined with SPC. The spec. sheet usually includes a trouble shooting guide and recommended action from the engineer when process goes out of control.

<< i do not have an example that I can share. sorry >>

I interpret a process specification as a guideline for the operator of the process. The process engineers has determined what the normal operating limits are and documents this in the spec. sheet.

This spec. allows the operator to control the process within the limits set in the spec. The operator would need "permission" to go outside this range.

Spec. like this are typical for injection molding, extrusion and grinding operations. The variation in input materials and ambient conditions require the operator to make small adjustment to keep the process on target when it starts to drift.

It is usually combined with SPC. The spec. sheet usually includes a trouble shooting guide and recommended action from the engineer when process goes out of control.

<< i do not have an example that I can share. sorry >>


Thanks a lot kales, this is exactly what i am looking for, but unfortunately you do not have a 'example' to share but anyway i got some idea from your post as what to include in the document but you mentioned that it can be combine with SPC; can you elaborate a bit more on that, how can it be done, as we already have some control charts in place for monitoring the process. just to make the picture clear, the process in question is a moulding process to make wind turbine blades.

Hi,

My boss has asked me to write 'Process Specification' document. The document should consist of all those general parameters which need to be controlled during the manufacturing process. Only general requirements should be mentioned in the documents such as production environment, process time, curing temperature, minimum torque etc, and not part level requirements.

Has anyone ever made any document like that, and willing to share document / template. I already have the Process Flow diagram and I am thinking of making separate Process Specs. for each sub process. any suggestions ???

cheers

Most of these documents are in the form of a matrix. Each of the items you mention would be one column. If the plan is general information only, then there needs to be a second document that shows the specifics.

For example, you might have a general plan to control the making of a pie shell. But, each flavor (apple, cherry, etc.) has a specific recipe to go with it.