ASQ
Shenzhen LMC organized a seminar on “Minus Quality Assurance (- QA)” (減法品質保證) on 8th Sep 2019
(Sunday) in Shenzhen. The seminar is
full within two hours after the post published.
Dr. Aaron Tong (China Outstanding Quality Professional (中國傑出質量人)) was invited to be the honorary
speaker. Minda and I represented HKSQ to
support Aaron’s talk. Before the
seminar, we were invited by ASQ Shenzhen LMC to have lunch together.
(Left:
Ms. Minda Chiang, Ms. Susanne Chang, I, Mr. Simon Lee (Vice Chair, ASQ Shenzhen
LMC) and Mr. Lorenzo (Operation Chair, ASQ Shenzhen LMC), Dr. Aaron Tong and
Dr. Pat Cheung)
The
venue was closed to the restaurant. Mind and I took a photo for memory.
We met
Mr. Simon Tong (Chair, ASQ Hong Kong LMC) and took a photo for memory.
Dr. Pat
Cheung, Minda and I prepared to learn from Aaron. You could feel how hot in Shenzhen.
In the
beginning, Mr. Simon Lee (Vice Chair, ASQ Shenzhen LMC) introduced the guest
speaker and the only one awarded the China Outstanding Quality Professional (中國傑出質量人) in GBA – Dr. Aaron Tong.
Dr.
Aaron Tong firstly reviewed different quality cost concepts from 80s, 90s and
now.
In 80s, the total Cost of Quality (COQ) defined Failure Cost plus Appraisal Cost that we needed to find the optimal one.
In 90s, the
total COQ included Failure Cost, Appraisal Cost and Preventive Cost. However, it was only an ideal case.
The real
situation was showed as the diagram that it included External Failure Cost,
Internal Failure Cost, Appraisal Cost and Preventive Cost. If we increased Appraisal Cost and Preventive
Cost, firstly Internal Failure Cost would increase immediately and then
External Failure Cost would decrease after some time (say 9 months). External
Failure Cost reduction had latency.
Therefore,
Dr. Aaron Tong proposed minus QA in which did not increase Appraisal Cost and
Preventive Cost, but could reduce Failure Cost significantly. The most important part of –QA from optimal
testing (remove over testing) and decrease the preventive cost so as to reduce
the internal failure cost. Based on Dr.
Aaron Tong past seminars (see reference), his original insight was come from
Deming.
And then
he reviewed the traditional QA (he named addition Quality Assurance (+QA). The following diagram demonstrated the
existing practice in factory.
However,
we needed to find the original source of problem that usually hidden under
water. So that –QA aimed to solve the root cause but not only use addition
resource.
The following table compared both concepts in terms of Cost, Effect, Supply Chain, Stock, After Sale Reliability and Process of Production.
Finally,
Dr. Aaron Tong explained his –QA concept and implementation in two case studies
that one is SUPOR and the other is LED Supplier for IKEA. In SUPOR case, -QA implementation could
reduce the after sale NC percentage from 3% to 0.3% after 50 months. In LED
supplier case, the cycle time was reduced significantly from 14 days to 1 day.
At the end,
Dr. Aaron Tong shared –QA tools to us included:
i)
Effect-Cause Analysis (using Extension thinking)
ii)
HALT / HASS application
iii)
Cross Industry and Cross team during implementation
iv)
Supply Management (No need to do good/best, but need to do right!)
Q&A
Session.
Lastly,
we took a group before left.
After
the seminar, Minda and I visited the new airport in Shenzhen.
Very
large and beautiful.
We saw an
auto machine for medicine.
We had dinner in airport restaurant and then back to HK.
Reference:
ASQ
Shenzhen LMC - https://www.weibo.com/u/3916950978?is_all=1
20170714: ASQ LMC Hong Kong Seminar “From Process
Change to Human Change” - https://qualityalchemist.blogspot.com/2017/07/asq-lmc-hong-kong-seminar-from-process.html
Previous Aaron’s related talk:
20160703:
HKSQ Quality Philosophies Series – Deming Workshop - https://qualityalchemist.blogspot.com/2016/07/hksq-quality-philosophies-series-deming.html
20180414:
HKSQ Congratulate to Dr. Aaron Tong awarded China Outstanding Quality
Professional (中國傑出質量人) 2017 and visit Beijing Industries - https://qualityalchemist.blogspot.com/2018/04/hksq-congratulate-to-dr-aaron-tong.html
20180804:
HKSQ AGM Quality Innovation Seminar on “Extenics and AI Application” - https://qualityalchemist.blogspot.com/2018/08/hksq-agm-quality-innovation-seminar-on.html
2181108:
The 3rd World Summit for Chinese Quality (WSCQ) – Day 1 (Part A) - https://qualityalchemist.blogspot.com/2018/11/the-3rd-world-summit-for-chinese.html
20181117:
HKSQ/Minitab/TQM Seminar on Asset Management and Reliability: Machine Learning
+ AI - https://qualityalchemist.blogspot.com/2018/11/hksqminitabtqm-seminar-on-asset.html
20190829:
The 4th Summit of pre-World Alliance for Chinese Quality (WACQ) – Day 1 (Part
A) - https://qualityalchemist.blogspot.com/2019/08/the-4th-summit-of-pre-world-alliance.html
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