Advice on this real case on AQL (Acceptable Quality Level)?

Y

ylliu8888

#1
for example,

the lot size is 5000pcs, we normally draw 200pcs sample, and we find 5 major only, then we accept the lot.

then the production lot shipped to our customer, they don't perform incoming inspection because of costing and relationship issue.

then the product going to production line for packing and then they conduct full check, if they found 6pcs major, the will claim.

can anybody advise that if 6 majors out of 5000pcs sample size will be rejected or accepted?


this issue has dispute between my customer and my supplier.

appreciate the comment.

thank you
 
Elsmar Forum Sponsor

Stijloor

Staff member
Super Moderator
#2
For example:

The lot size is 5000pcs, we normally draw 200pcs sample, and we find 5 major only, then we accept the lot.

Then the production lot shipped to our customer, they don't perform incoming inspection because of costing and relationship issue.

Then the product going to production line for packing and then they conduct full check, if they found 6pcs major, the will claim.

Can anybody advise that if 6 majors out of 5000pcs sample size will be rejected or accepted?

This issue has dispute between my customer and my supplier.

Appreciate the comment.

Thank you.
A quick bump.

Can someone help with this?

Thank you very much!!

Stijloor.
 
G

Geoff Withnell

#3
for example,

the lot size is 5000pcs, we normally draw 200pcs sample, and we find 5 major only, then we accept the lot.

then the production lot shipped to our customer, they don't perform incoming inspection because of costing and relationship issue.

then the product going to production line for packing and then they conduct full check, if they found 6pcs major, the will claim.

can anybody advise that if 6 majors out of 5000pcs sample size will be rejected or accepted?


this issue has dispute between my customer and my supplier.

appreciate the comment.

thank you
So if I understand you correctly, you do a 200 piece sample. If the sample is less than 2.5% defective, you accept the lot. Your customer does a 5000 piece inspection, and rejects if the percent defective is over 0.1%. There is quite a gap between the two. You don't say what, if any, AQL contractually exists. If there is none stated in the Purchase Order, then the customer can pretty much do what they wish. Since you know they will "sample" on the basis of a 5000 piece sample, accept on 5 and reject on 6, you can construct the operating characteristic curve for that sample plan, and decide what your process average needs to be to be routinely accepted.

Geoff Withnell
 

somashekar

Staff member
Super Moderator
#4
for example,

the lot size is 5000pcs, we normally draw 200pcs sample, and we find 5 major only, then we accept the lot.

then the production lot shipped to our customer, they don't perform incoming inspection because of costing and relationship issue.

then the product going to production line for packing and then they conduct full check, if they found 6pcs major, the will claim.

can anybody advise that if 6 majors out of 5000pcs sample size will be rejected or accepted?


this issue has dispute between my customer and my supplier.

appreciate the comment.

thank you
AQL is a sample technique and works on a known confidence level. If the same AQL sampling is deployed then we are talking same language and same confidence level. Sample check and result thereoff cannot be countered with a full check and claim.
Sampling works under good supplier customer agreement which are based on agreed AQL.
If any, both parties have to redo the AQL sampling and acceptance process...
 
Thread starter Similar threads Forum Replies Date
S California Cleaning Product Right to Know Act - Product Label advice needed Miscellaneous Environmental Standards and EMS Related Discussions 1
M Seeking advice regarding use of off-the-shelf (OTS) batteries Other Medical Device and Orthopedic Related Topics 4
S Selling Clinical Practice Advice Other US Medical Device Regulations 7
R Plea for advice on transitioning between Notified Bodies (label updates) Medical Device and FDA Regulations and Standards News 1
T Advice needed - Environmental MS - unwritten but customer requests policy document ISO 14001:2015 Specific Discussions 5
M Process Creation Advice Needed Design and Development of Products and Processes 3
classical_quality AS9100 Surveillance Audit - advice on drafting strong responses AS9100, IAQG 9100, Nadcap and related Aerospace Standards and Requirements 11
A Single use non-sterile syringe used in the oral cavity - Laboratory test advice US Food and Drug Administration (FDA) 7
O ISO 9001 new certification advice request - Develop a QMS from scratch ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 9
D ISO 9001:2015 Internal Audit Training Advice Internal Auditing 10
kmrcial Any advice for a young quality professional in the aerospace industry? Career and Occupation Discussions 10
R Pls help --- Need expert advice on Video Measurement Measurement Uncertainty (MU) 0
C Advice on becoming a AS9100 Auditor - Need to audit organizations that are Design Responsible AS9100, IAQG 9100, Nadcap and related Aerospace Standards and Requirements 12
R Customer supplied material - risk and policy advice needed Quality Manager and Management Related Issues 11
D FDA Pre-Submission Meeting Advice US Food and Drug Administration (FDA) 0
Q Effective Auditing advice needed ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 16
T Unique Device Identifier Advice Other US Medical Device Regulations 1
M Medical Device News Health Canada Update - 05-09-18 - Pilot Device Advice Canada Medical Device Regulations 0
D AS9100 Document Management (Advice Needed) AS9100, IAQG 9100, Nadcap and related Aerospace Standards and Requirements 4
T Establishing -F- datum - need advice Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
C First Aid Kit Compliance advice - Registered assembler with the MHRA EU Medical Device Regulations 1
A Looking to certify to ISO 9001 - Any advice? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 4
QSM_Rick Advice on selecting an ISO 9001:2015 Lead Auditor Certification Course ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 22
H Looking for advice, input, tips on taking the AATT AS9101F Test AS9100, IAQG 9100, Nadcap and related Aerospace Standards and Requirements 1
S Nadcap HT Auditor Advisory 17-003 Advice needed AS9100, IAQG 9100, Nadcap and related Aerospace Standards and Requirements 0
J New position and AS9100 audit is 1 month away- need advice AS9100, IAQG 9100, Nadcap and related Aerospace Standards and Requirements 8
P Single Use Disposable Dental Syringe - CE Marking Advice EU Medical Device Regulations 4
Z ISO 9001:2015 Internal Audit Template/Form Advice Document Control Systems, Procedures, Forms and Templates 4
V Looking for advice on Pooled Standard Deviation between Minitab and MS Excel Statistical Analysis Tools, Techniques and SPC 1
rob73 Advice/recommendations for equipment to measure a soft pvc tube - Optical Measuring? General Measurement Device and Calibration Topics 4
S Suggestions or advice on complying with ISO 13485:2016 ISO 13485:2016 - Medical Device Quality Management Systems 3
5 Advice for a new EMS at a small, office-based company ISO 14001:2015 Specific Discussions 3
D Need advice in streamlining antiquated 21 CFR 820 compliant QMS Quality Manager and Management Related Issues 2
M Laser Etching Advice for Permanent Device Marking Manufacturing and Related Processes 5
R Advice on 3D Printer for Jigs and Fixtures Manufacturing and Related Processes 8
T AS9003 7.4.3 Critical Raw Material Verification Advice AS9100, IAQG 9100, Nadcap and related Aerospace Standards and Requirements 4
K Advice on scope of my QMS - Company that has 2 products ISO 13485:2016 - Medical Device Quality Management Systems 3
P Experience / advice for integrating API Q1 9th with a WCM program Oil and Gas Industry Standards and Regulations 5
S Advice for ISO17025 First Round of Internal Audits ISO 17025 related Discussions 10
3 K1 K2 K3 constant of Gage R&R - Please advice Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 2
Q Advice for the Implementation of a Lean/Six Sigma Program Six Sigma 9
D I need the advice/opinion from a J-STD expert Manufacturing and Related Processes 1
O Process Inspector Interviewing advice Career and Occupation Discussions 4
P SPC Short Run Advice of a Stamping Process Statistical Analysis Tools, Techniques and SPC 3
A Need MSA %GRR Interpretation Advice Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 2
J Need help/advice on video editing software etc..... Coffee Break and Water Cooler Discussions 8
F ISO 9001 Implementation Advice for Multiple Locations needed! ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 4
K Advice needed on Software Lifecycle Management. IEC 62304 - Medical Device Software Life Cycle Processes 7
A Advice for becoming an ISO9001 Lead Auditor Professional Certifications and Degrees 10
M Manufacturing Process Validation Destructive Testing Sampling Plan Advice Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
Similar threads


















































Top Bottom