TS 16949 Clause 8.2.3.1 - Maintaining Process Capability

P

p_tww

#1
process capability maintenance

TS2 required in clause 8.2.3.1 as " the organisation shall maintain manufacturing process capability or performance as specified by the customer part approval process requirements.""
question is " if client required CPK >1.33, and our initial study result was cpk=1.8(example) but dropped down to cpk=1.5 4 months later, Is it still satisfy the standard requirement,( cpk=1.5 still exceed customer required cpk>1.33)"
 
Elsmar Forum Sponsor
B

Bill Ryan - 2007

#2
In a nutshell - Yes - you still meet the customer requirement. In the vein of Continuous Improvement, did your Standard Deviation change or did the Mean change, or both? Even though this kind of goes against my arguments in another thread, you should investigate what has changed and get the process back in order (1.5 Cpk is still producing (statistically) 7 ppm which, with my automotive customers anyway, is not good enough - no matter what their "Corporate Standard" dictates).

Bill
 
P

p_tww

#3
Bill Ryan said:
In a nutshell - Yes - you still meet the customer requirement. In the vein of Continuous Improvement, did your Standard Deviation change or did the Mean change, or both? Even though this kind of goes against my arguments in another thread, you should investigate what has changed and get the process back in order (1.5 Cpk is still producing (statistically) 7 ppm which, with my automotive customers anyway, is not good enough - no matter what their "Corporate Standard" dictates).

Bill
Hi,Bill,
agreed your concerns. but

If you thought it still satisfied standard requirements, What about do you think the "process approval acceptance criteria" which was identifed in clause 7.3.3.2?????
 
B

Bill Ryan - 2007

#4
p_tww said:
If you thought it still satisfied standard requirements, What about do you think the "process approval acceptance criteria" which was identifed in clause 7.3.3.2?????
Maybe I don't fully understand your question. If the "client" has a requirement of >1.33 ongoing Cpk ("process approval acceptance criteria") , where are you not meeting that requirement? IMO, yes, something in your process has "deteriorated" somewhat from your "First Time Quality" index, but you are still meeting a customer requirement.

Am I missing something??

Bill
 

howste

Thaumaturge
Super Moderator
#5
I agree with Bill. It sounds like you still meet the requirements, but you should still investigate to find out why the Cpk is lower now. Also look at 8.5.1.2 Manufacturing process improvement
Manufacturing process improvement shall continually focus upon control and reduction of variation in product characteristics and manufacturing process parameters.
 
P

p_tww

#6
howste said:
I agree with Bill. It sounds like you still meet the requirements, but you should still investigate to find out why the Cpk is lower now. Also look at 8.5.1.2 Manufacturing process improvement
thanks for your input.
I agree with your opinion.
in clause 8.2.3.1, it also mentioned reaction plan should prepared for those unstable process. the dropped cpk means they are not stable, so the company should check the cause and initiate appropriate actions.
Also from acceptance criteria in process design output, the cpk result should be criteria for series production process.
I just surprised why the standard have this word" the organisation shall maintain manufacturing process capability or performance as specified by the customer part approval process requirements" :smokin:
 
S
#7
p_tww asks,
"I just surprised why the standard have this word" the organisation shall maintain manufacturing process capability or performance as specified by the customer part approval process requirements"

For DCX,Ford,GM; this statement refers to PPAP 3rd editiion para 1.2.2.9 - Initial Process Studies. Also refer to customer specific requirements for additional information.
 
P

p_tww

#8
Sam said:
p_tww asks,
"I just surprised why the standard have this word" the organisation shall maintain manufacturing process capability or performance as specified by the customer part approval process requirements"

For DCX,Ford,GM; this statement refers to PPAP 3rd editiion para 1.2.2.9 - Initial Process Studies. Also refer to customer specific requirements for additional information.
thanks Sam,

I knew that, also in QS standard, I remembered that the company should maintain and/or? exceed the capability in ppap process.
 
A

anilo

#9
Re: process capability maintenance

p_tww said:
question is " if client required CPK >1.33, and our initial study result was cpk=1.8(example) but dropped down to cpk=1.5 4 months later, Is it still satisfy the standard requirement,( cpk=1.5 still exceed customer required cpk>1.33)"
Hi p_tww.

IMHO, you are, obviously, still satysfying the customer requirement.
But something has gone, or is still going, wrong in your process.

i think, even if you met customer requirement, you have to analyze the dropped causes.
And this not just for your customer, but for you.

Bye
 
P

p_tww

#10
Re: process capability maintenance

anilo said:
Hi p_tww.

IMHO, you are, obviously, still satysfying the customer requirement.
But something has gone, or is still going, wrong in your process.

i think, even if you met customer requirement, you have to analyze the dropped causes.
And this not just for your customer, but for you.

Bye
Hi, Anilo

thanks for your concerns. I know that, It's just for discussion. :vfunny:
 
Thread starter Similar threads Forum Replies Date
earl62 IATF 16949 Clause 9.1.1.1 - What is the batch conformance to specification method? IATF 16949 - Automotive Quality Systems Standard 3
P IATF 16949 Clause 8.4.2.3 - Justification for non-certified suppliers IATF 16949 - Automotive Quality Systems Standard 14
M IATF 16949:2016 clause 8.4.2.3 - We don't have ISO 9001:2015 certificate IATF 16949 - Automotive Quality Systems Standard 26
R Material safety data sheet (MSDS) related clause in IATF 16949 manual IATF 16949 - Automotive Quality Systems Standard 17
R IATF 16949 Clause 8.5.1.6 a) maintenance and repair facilities - Production tooling management and personnel IATF 16949 - Automotive Quality Systems Standard 4
QChas IATF 16949 Clause 8.5.1.2 - C -Standardized Work IATF 16949 - Automotive Quality Systems Standard 1
N Looking for input on the attached Process / IATF 16949 Clause Matrix IATF 16949 - Automotive Quality Systems Standard 4
R IATF 16949 Clause 6.1.2.1 - Lessons Learned and Risk Analysis IATF 16949 - Automotive Quality Systems Standard 6
L IATF 16949 Clause 9.2.2.2 Quality Management System Audit IATF 16949 - Automotive Quality Systems Standard 9
H IATF 16949 Clause 9.2.2.2 Audit System / CSR IATF 16949 - Automotive Quality Systems Standard 1
B IATF 16949 clause 7.1.5.1.1 - Statistical studies shall be conducted IATF 16949 - Automotive Quality Systems Standard 3
P Interesting Discussion IATF 16949:2016 Clause 9.2.2.3 and Layered Process Audits IATF 16949 - Automotive Quality Systems Standard 18
M Reference to IATF 16949 clause 8.4.3 in clause 8.3.4.4, Is it right? IATF 16949 - Automotive Quality Systems Standard 1
M IATF 16949 Clause 8.3.5.2 sub-clause (l) - Process maintainability requirements IATF 16949 - Automotive Quality Systems Standard 15
J IATF 16949 Clause 9.3.2.1 - How to understand "measures" IATF 16949 - Automotive Quality Systems Standard 4
J How to address IATF 16949 clause 5.1.1.1 in my Quality Manual IATF 16949 - Automotive Quality Systems Standard 6
B IATF 16949 clause 8.3.4.3 Prototype programme IATF 16949 - Automotive Quality Systems Standard 0
DeeDeeM IATF 16949 - Clause 8.5.2 Identification and Traceability IATF 16949 - Automotive Quality Systems Standard 7
W IATF 16949 Clause 6.1.1 - My first Major NCR (Management Review) IATF 16949 - Automotive Quality Systems Standard 57
A Escalation Process - IATF 16949 Clause 4.4.1.2 IATF 16949 - Automotive Quality Systems Standard 11
E IATF 16949 Clause of 8.4.3 - Approvals - Can you explain to me IATF 16949 - Automotive Quality Systems Standard 1
B IATF 16949 Clause 9.2.2.2 - Which QMS Processes are Included IATF 16949 - Automotive Quality Systems Standard 1
J What are sample documents of IATF 16949 Clause 8.6.4 a? IATF 16949 - Automotive Quality Systems Standard 2
S IATF 16949 Clause 8.3.3.3 - Documentation of all Special Characteristics in Drawings IATF 16949 - Automotive Quality Systems Standard 2
B IATF 16949 Section Clause 8.3.4.1 - Monitoring - Design and Development Input(s) IATF 16949 - Automotive Quality Systems Standard 3
B IATF 16949 Clause 8.6.2 - Layout Inspection and Functional Testing IATF 16949 - Automotive Quality Systems Standard 11
B IATF 16949 Clause 9.3.2.1 - Management Review Inputs IATF 16949 - Automotive Quality Systems Standard 1
T Customer Authorization for Concession - IATF 16949 Clause 8.5.1.1 IATF 16949 - Automotive Quality Systems Standard 3
W IATF 16949 Clause 8.4.2.4.1 Second Party Audits (Supplier Management) IATF 16949 - Automotive Quality Systems Standard 45
T Record Retention Requirements - IATF 16949 Clause 7.5.3.2.1 Records and Data - Quality, Legal and Other Evidence 15
B IATF 16949 Clause 8.5.6.1.1 (Temporary Process Control Change) IATF 16949 - Automotive Quality Systems Standard 24
T Temporary Change of Process Controls - IATF 16949 Clause 8.5.5.1.1 IATF 16949 - Automotive Quality Systems Standard 16
B IATF 16949 Clause 8.4.1.2 - Supplier Selection Process - Service Providers IATF 16949 - Automotive Quality Systems Standard 11
J IATF 16949 Clause 8.7.1.7 Nonconforming Product Disposition - Scrap Rendered Unusable IATF 16949 - Automotive Quality Systems Standard 64
M IATF 16949 Clause 4.4.1.2 - Product Safety - Concept of the Title IATF 16949 - Automotive Quality Systems Standard 4
M IATF 16949 Clause 7.1.5.1.1 - What are "inspection equipment systems"? IATF 16949 - Automotive Quality Systems Standard 4
P Setup Verification in IATF 16949 Clause 8.5.1.3 IATF 16949 - Automotive Quality Systems Standard 6
D Does IATF 16949:2016 Clause 7.3 (now 8.3) Apply to "Grandfathered" Products IATF 16949 - Automotive Quality Systems Standard 4
J IATF 16949 Clause 8.7.1.7 Nonconforming Product Disposition Compliance IATF 16949 - Automotive Quality Systems Standard 38
M Exclusion of IATF 16949 Clause 4.4.1.2 - Product Safety IATF 16949 - Automotive Quality Systems Standard 2
P Problem with IATF 16949 Clause 7.2.3 Requirements (Internal Auditor Competency) IATF 16949 - Automotive Quality Systems Standard 3
M IATF 16949 Clause 4.4.1.2 - Product Safety IATF 16949 - Automotive Quality Systems Standard 13
M Compliance with IATF 16949 Clause 8.3.4.4 Product Approval Process IATF 16949 - Automotive Quality Systems Standard 2
dubrizo IATF 16949 Clause 8.7.1.6 - Customer Notification - Your Inputs Requested IATF 16949 - Automotive Quality Systems Standard 4
P IATF 16949 Clause 8.5.6.1.1 - Temporary Change of Process Controls IATF 16949 - Automotive Quality Systems Standard 21
M IATF 16949 Clause 8.3 - Rework Records Requirements IATF 16949 - Automotive Quality Systems Standard 1
J What results need to be defined in IATF 16949 Clause 8.3.4 IATF 16949 - Automotive Quality Systems Standard 3
P IATF 16949 Clause 10.2.4 - Error Proofing IATF 16949 - Automotive Quality Systems Standard 25
P IATF 16949 Clause 8.5.1.4 - Verification after Shutdown IATF 16949 - Automotive Quality Systems Standard 12
J How to understand IATF 16949 Clause 8.5.6.1.1 - Process Controls IATF 16949 - Automotive Quality Systems Standard 2

Similar threads

Top Bottom