SPC (Statistical Process Control) Overview
- Thread starter Steve Prevette
- Start date
T
tristan
i think there is an interpretation cut short here in terms of using control charts. re-calculating baselines must also be linked to final product performace, reliability, and customer specifications. any process change leading to baseline change must be checked against these. by doing these, the changing baselines and control limits do tell us 2 things: feedback to current process & confidence in how the process will perform in the future.
N
Nehal
good info.
want more information regarding SPC.
want more information regarding SPC.
Welcome to the Cove, Nehal
This place is loaded with information on SPC. Do a search of the Cove and you'll find lots of stuff, and if you have a specific question, someone here will be glad to help.
There is the Hanford Trending Primer at https://www.hanford.gov/safety/vpp/trend.htm which includes more information, and information on the Hanford Performance Indicator Forum.
A
artichoke
Steve,
Wonderful to see that you are one of the very few people who seem to be aware of the 99.7% control chart myth. This myth appears to have been propagated by popular authors such as Montgomery and has led to much misunderstanding.
Wonderful to see that you are one of the very few people who seem to be aware of the 99.7% control chart myth. This myth appears to have been propagated by popular authors such as Montgomery and has led to much misunderstanding.
Last edited by a moderator:
NEW!
Based upon a request originally by Bechtel, but also supported by my employer Fluor, and other Department of Energy contractors here at Hanford, I've accumulated a lot of my papers into a two-day statistical training session. This covers SPC, and also choosing indictors, Dr. Deming's Red Bead Experiment and System of Profound Knowledge, some hands-on exercises, and some computer exercises. Fluor has given me permission to make the materials available on the internet, and the URL is
https://www.hanford.gov/rl/?page=1156&parent=1144
Since the materials were generated under US Government contract, there is not a copyright protection. You are welcome to make use of the materials if you find them useful. I would, of course, appreciate a mention as the source of the materials if you use them.
{Semi-Advert} Of course, if you'd like me to come make the training for your group, that could be arranged.
Based upon a request originally by Bechtel, but also supported by my employer Fluor, and other Department of Energy contractors here at Hanford, I've accumulated a lot of my papers into a two-day statistical training session. This covers SPC, and also choosing indictors, Dr. Deming's Red Bead Experiment and System of Profound Knowledge, some hands-on exercises, and some computer exercises. Fluor has given me permission to make the materials available on the internet, and the URL is
https://www.hanford.gov/rl/?page=1156&parent=1144
Since the materials were generated under US Government contract, there is not a copyright protection. You are welcome to make use of the materials if you find them useful. I would, of course, appreciate a mention as the source of the materials if you use them.
{Semi-Advert} Of course, if you'd like me to come make the training for your group, that could be arranged.
D
DsqrdDGD909
Whhoooowweeeee - I've hit the Mother Lode.
Thanks a bunch!
Thanks a bunch!
S
shank
I am getting confused between stability and capabitlity. Can someone list out the attributes to capability and stability separately?
Welcome to the Cove, shank
It's pretty simple. "Stability" refers to a state of statistical control, meaning that the process is subject only to inherent random variation. "Capability," on the other hand, has to do with how likely the process is to produce output meeting the specification limits. A process may be stable without being capable.
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