"Calibration Not Required" label requirements

bobdoering

Stop X-bar/R Madness!!
Trusted Information Resource
#31
I look forward to getting things set "right!" As usual, I won't be the most popular person here, but I'll feel much better getting them on track. "Popular" is overrated anyway, right?
It beats being unpopular for recalls or scrap from measuring with a gage that was out of specification from wear or damage - especially parts made from expensive raw materials.

At least that's what I think. :tg:
 
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R

Richard Pike

#32
I look forward to getting things set "right!" As usual, I won't be the most popular person here, but I'll feel much better getting them on track. "Popular" is overrated anyway, right?

Thank you all for your great information and support!

:D
Can i I possibly repeat a few of the things that have been said and with due respect you seem to be ignoring.

a) If an instrument is used to make a decision on a product or process - then it SHALL be calibrated unless by contract you have implemented an alternative.

b) The Calibration frequency depends on your historical usage - and trend / wear patterns.

(In the absence of these, they should be "immediately" calibrated.

The subsequent frequency - you can worry about later! It is not an issue at the moment and wont be for some months!

If the gauges come back - worn (which may not be detectable as you appear not to know the original condition!) then based on the amount of wear, you can guesstimate a time for the next calibration.

If you don't know the original condition - you can at least assume that when the were introduced - they were in specification - and use this as a basis for guesstimating wear.

However - it may be viable to take a representative selection of the gauges for re-calibration after say 4 months - if no wear is detected then you may be able to assume that similar gauges will be OK and subsequently - calibrate a few more after say 8 months. You can then repeat this action on selected gauges until you are able to detect a wear history.

That,s one solution - however if your company still considers such action as too expensive - as they are "checked" against a customer product ( I cannot imagine how this works) you may be able to get your customer to agree, (in writing) that there master product can be used to verify the gauges.

The other question (which may have been asked - but I may have missed) is Are you getting any complaints / rejects from your customer?

So there you have it - some solid things that you can practically implement - or not!
 
L

lego55

#33
Can i I possibly repeat a few of the things that have been said and with due respect you seem to be ignoring.

a) If an instrument is used to make a decision on a product or process - then it SHALL be calibrated unless by contract you have implemented an alternative.

b) The Calibration frequency depends on your historical usage - and trend / wear patterns.

(In the absence of these, they should be "immediately" calibrated.

The subsequent frequency - you can worry about later! It is not an issue at the moment and wont be for some months!

If the gauges come back - worn (which may not be detectable as you appear not to know the original condition!) then based on the amount of wear, you can guesstimate a time for the next calibration.

If you don't know the original condition - you can at least assume that when the were introduced - they were in specification - and use this as a basis for guesstimating wear.

However - it may be viable to take a representative selection of the gauges for re-calibration after say 4 months - if no wear is detected then you may be able to assume that similar gauges will be OK and subsequently - calibrate a few more after say 8 months. You can then repeat this action on selected gauges until you are able to detect a wear history.

That,s one solution - however if your company still considers such action as too expensive - as they are "checked" against a customer product ( I cannot imagine how this works) you may be able to get your customer to agree, (in writing) that there master product can be used to verify the gauges.

The other question (which may have been asked - but I may have missed) is Are you getting any complaints / rejects from your customer?

So there you have it - some solid things that you can practically implement - or not!
Richard,

We get a very small amount of rejections here; recent ones have been related to particular vendor processes, not the dimensions.

All of what you said is very helpful information and greatly appreciated! Thanks for getting me started on the right track and taking the time to respond. Wish me luck getting the pack to follow. I'm goin' in......:frust:
 

bobdoering

Stop X-bar/R Madness!!
Trusted Information Resource
#34
We get a very small amount of rejections here...
That's good - want to keep it that way - and not just based on luck! :tg:

Remember this - for gages used very little (annual inspection, spares kept for use when gages are out for calibration, etc.), you maybe able to save money by extending the calibration period. If little or no wear is detected in the subsequent calibrations AND no new, more frequent use has been introduced to the gage, then you may have justification for extending the gage period. Don't calibrate - but lock up - gages not used, that also saves money. Just pay for the ones on the floor, and the spares you have for when the other gages are out for calibration.
 
L

lego55

#35
Remember this - for gages used very little (annual inspection, spares kept for use when gages are out for calibration, etc.), you maybe able to save money by extending the calibration period. If little or no wear is detected in the subsequent calibrations AND no new, more frequent use has been introduced to the gage, then you may have justification for extending the gage period. Don't calibrate - but lock up - gages not used, that also saves money. Just pay for the ones on the floor, and the spares you have for when the other gages are out for calibration.
Thanks for the $-saving advice! We all can use it now.

:thanks:
 
F

Freddyg63

#36
"Calibration Not Required" should be acceptable, as long an adequate justification is included in your procedures.

The pins can act as "transfer" tools (like telescoping gages). You measure the pin with a calibrated micrometer and record that data.
 
S

SHall

#37
One advantage of using pre-printed labels, is that the person in possession of the labels is able to confirm the equipment should be labeled as Calibration Not Required, and that any requirements in the procedure (as other posts have described) have been met.

Been using these guys forever, no complaints:
http://www.gmplabeling.com/stock_labels/detail_item.php?product_id=172

For less than $100, you get a bit more control over what gets labeled.
 
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