STANDARD. ISO. Second edition. Sampling procedures for inspection by attributes — ISO’s member body in the country of the requester. ISO provides skip-lot procedures for use when the process quality is markedly superior Quality Control Tips to the AQL for a defined. ISO. First editic..n. Sampling procedures for inspection by attributes. Part 1: Sampling plans indexed by acceptable quality.
|Published (Last):||11 December 2006|
|PDF File Size:||1.13 Mb|
|ePub File Size:||5.67 Mb|
|Price:||Free* [*Free Regsitration Required]|
ISO Skip-lot Sampling , –
The reduction in inspection effort is achieved by determining at random, 259-3 a specified probability, whether a lot presented for inspection will be accepted without inspection. The reduction in inspection effort is achieved by determining at random, with a specified probability, whether a lot presented lso inspection will be accepted without inspection. Does this mean the AQL value should be less than or greater than 0. Second, if a candidate product carries some critical features dimension of mechanical productbut also carries a number of low risk features, can we apply the skip lot concept only to the non-critical features?
They contain a digital watermark to protect the copyright.
ISO 2859-3 Skip-lot Sampling 5.1.1, 5.2.1
My name is Dean Neubauer and I am the U. The purpose of these procedures is to provide a way of reducing the inspection effort on products of high quality submitted by a supplier who has a satisfactory quality assurance system and effective quality controls.
Sampling procedures for inspection by attributes – Part 5: The lot should be one of a continuing series of lots We expect these lots to be of the same quality The consumer should not expect that any lot is any worse than any of the immediately preceding lots The consumer must have confidence in lso supplier not to pass a substandard lot even though other lots are of acceptable quality Under these conditions, we can use the record of previous inspections as a means of reducing the amount of inspection on any given lot.
The requirements for supplier qualification are as follows.
In your situation, if you have critical characteristics you should not be doing skip-lot inspection due to the risk of ignoring skipping a potentially dangerous lot.
In general, such plans require certain assumptions to be met regarding the nature of the inspection process:. My purchase is non-refundable.
Variation in Continuous and Discrete Measurements. Sampling procedures for inspection by variables – Part 4: And continue to perform lot-by-lot inspection with critical features?
The underlying assumption here is that the supplier quality is exceptional low nonconforming level. Your levels of 1. System of sequential sampling plans indexed by acceptance quality limit AQL for lot-by-lot inspection.
Skip to content Q: Under these conditions, we can use the record of previous inspections as a means of reducing the amount of inspection on any given lot. Procedures for assessment of declared quality levels e-standard. The standard requires that: Looking izo purchase to post 259-3 your company’s Intranet?
Your listing of AQLs of 1. I understand that I cannot print or share electronic products.
In general, such plans require certain assumptions to be met regarding the nature of the inspection process: This procedure extends the principle of the random selection of sample items already applied in ISO to the random selection of lots.
The sampling plans have been devised so that their operating c Please proceed with checkout. If several characteristics are present, then try to test for at least one of them. Sampling procedures for inspection by attributes jso Part 3: ISO states the above in 5. Sorry, your blog cannot share sio by email. On the other hand, you can use a skip-lot plans for non-critical major and minor nonconformities and they will have different AQL levels associated with them.
The skip-lot sampling procedures specified in ISO Iwo defects will typically have an AQL less than 1. A skip-lot sampling plan is also known as a cumulative results plan. The skip-lot plan is applied to each characteristic, or feature, separately. It is assumed that the system includes inspection by the supplier of each lot produced and the recording of inspection results. The purpose of these procedures is to provide a way of lso the inspection effort on products of high quality submitted by a supplier who has a satisfactory quality assurance system and effective quality controls.