Am I silly to do a 100% inspection?

jerry_Malaysia

Quite Involved in Discussions
#11
Re: M i silly to do a 100% inspection?

What industry are you in? What parameters you want to check? Does it related to fit and function? What kind of product you want to check?
If checking parameters are mostly dimensional related and the tolerances is manageable, you could fabricate your own gauges.
 
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P

Phil Fields

#12
Re: M i silly to do a 100% inspection?

Thanks Jerry and Umang.

Currently I m trying to implement process capability to determine my thoroughness of the inspection.

My boss on one hand wants me to do a 100% sampling so as to give a quality assurance to the customers yet on the other hand he doesnt want to waste the manpower on all the inspection and of course the time saved from all the measuring.

Hence i m right now in a dilemma, how to strike the right balance in letting him have a close to 100% confidence on the product specifications and of course reducing manpower.

Would i be able to acheive a close to 100% confidence without doing a 100% sampling on my ave population of 50 products? my products on general usually falls well in the passing category however there might be some occasional problems where i have to assess the production line.
It sounds like your real issue is how to satisfy your boss with conflicting requirements (100% inspection/no added manpower).

Do you have data for in-house quality performance and for customer complaints (rejects)? Are there areas of opportunity where inspections would be helpful in reducing rejected product in-house and at the customer?

I would work your question backwards as to how to satisfy your boss’s requirements. Is your boss normally involved in the factory, or is he/she upper level management with little participation in the factory?

I hope this helps,
Phil
 
B

bookcat

#13
Dear all,

I m going through a decision whether to make a 100% inspection of all my products from my production line. in any production of mine, the population could be as small as 1 and as big as 160. on average i would say the population is about 50 on every production line.

My inspection consist of 4 inspections on the dimensions. Now i m pondering really hard if this decision to make a 100% inspection is stupid and if there is an even more effective way of sampling.
It depends on the population, available resource, and control.
 
Z

zekeQA

#15
Re: M i silly to do a 100% inspection?

Added to all the good points do remember that 100% inspection will not give 100% assurance that 100% of your products are 100% good.
What I mean is 100% inspection in itself is not to be getting a feeling that "All is well"
The more rigerous this inspection becomes, the more problems it itself creates.
It is more about good process control, proper and scientific checks established at stages that gives a good end output, and a scientifically established sampling plan to inspect that assures quality.
It should be quality assurance and not quality control.
I am going to slightly rephrase this and hang it on my office wall. :thanx:
 

bobdoering

Stop X-bar/R Madness!!
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#16
Re: M i silly to do a 100% inspection?

Added to all the good points do remember that 100% inspection will not give 100% assurance that 100% of your products are 100% good.
That depends on the adequacy of the inspection process (GR&R, etc.) Otherwise, even process control can not be effective.

The more rigorous this inspection becomes, the more problems it itself creates.
Again, that depends on the adequacy of the inspection process. If the inspection process is effective, the only real problem should be excessive inspection costs.

It is more about good process control, proper and scientific checks established at stages that gives a good end output, and a scientifically established sampling plan to inspect that assures quality.
It should be quality assurance and not quality control.
Now that I agree with! But, its additional goal is finding the problem before adding more value to it in the process.
 
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