The Hong Kong Society for Quality (HKSQ) organized
a webinar named “Why we need Inspection Service” on 24th Jun 2022. Inspection
is the most common method of attaining standardization, uniformity, and quality
of workmanship on the product. The webinar aims to introduce inspection service
based on acceptance quality level (AQL), different types of inspection and
competence based on ISO 17020. The guest speaker was Dr. Jane WK Wong (Vice-chairman,
HKSQ; Retail Sales Director, General Inspection Services Co., Ltd.) and she has
over 30 years’ experience in inspection business.
Firstly, Dr. Jane Wong briefed some reasons to
employ inspection service such as reducing the risk, ensuring the contractual
obligations, identifying the problem before shipment, etc. Then she mentioned
the QA and QC in the global supply chain with certification, testing and
inspection service.
Then she stated different types of inspection
including “Pre-production Inspection (First Article Check)”, “During Production
Inspection (DPI) / In-line Inspection” and “Pre-Shipment Inspection (PSI) /
Final Random Inspection (FRI)” under different product categories.
After that Dr. Wong used a case to example
inspection plan such as item A with 1200 pieces and 80 samples inspected. Number
of cartons is 60 and number of drawn is square root of 60 ~ 8.
Finally, she employed case study on single
sampling plans for normal inspection to explain the AQL inspection table. Usually, customer would select general
inspection level II where level I is smaller sample size and level III is larger
sample size. She further explained that reject
if any critical defect is found because it related to safety. Major defect is
some broken part of product and cannot sale.
Minor defect is some flaw but still can sale.
Lastly, she introduced the roadmap of inspection.
Before
end of webinar, we had discussed many items during Q&A sessions as below.
-
Defects Per Million Opportunities (DPMO) employed
in factory;
-
Proof of Concept (PoC) product is only one
or two piece(s) that inspection body would communicate with customer to arrange
pre-production inspection, etc.
We took a group photo
for memory at the end.
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