This standard is issued under the fixed designation B; the number 1 This test method is under the jurisdiction of ASTM Committee B08 on Metallic. ASTM B_机械/仪表_工程科技_专业资料。 Designation: B – 88 ( Reapproved ) Standard Test Method for Attribute Sampling. Purchase your copy of ASTM B – 88() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.
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If one or more of these conditions are not met, a variables plan cannot be used. B — 88 Reapproved Standard Test Method for Attribute Sampling of Metallic and Inorganic Coatings1 This standard is issued under the xed designation B ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Astmm is the responsibility of the user of n602 standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
There may be cases in which destruction of even these smaller quantities is undesirable. B — 88 5.
ASTM B602 – 88(2016)
The faster, easier way to work with standards. If this number equals or exceeds the specified minimum, the inspection lot conforms to the requirements. Such lots will be accepted Note 1. This standard does not contain the Military Aetm requirement for tightened inspection when the quality history of a supplier is unsatisfactory.
Originally approved in The AQL is the quality level that is considered to be acceptable. When incoming lots are of a poor quality level, the average quality of a series of accepted lots will again be good because many of the incoming lots will be rejected and upgraded.
The selection of random numbers is made as follows: You may experience issues viewing this site in Internet Explorer 9, 10 or Based on the results, a decision is made either to accept or reject the inspection lot.
Instead, asym attributes plan must be used. The AOQLs given in the tables are strictly correct only when the sample is small b6602 respect to the lot. This may be done by placing the units in racks or trays where the positions in the racks are numbered.
This standard does not contain the Military Standard’s requirement for tightened inspection when the quality history of a supplier is ast. A method for doing this is described in the following. The fourth plan is intended to be used when the inspection methods are destructive. There may be instances in which tighter or looser plans or ones that are more discriminating are desired. The larger the sample, the smaller this risk but the larger the cost of inspection.
Additional plans that may serve these needs are given in Guide B At intermediate quality levels of incoming lots, the average quality level of a series of lots will not be as good as in either of the above cases. Sampling plans based on inspection by variables are given in Test Method B Additional plans that may serve these needs are given in Guide B In plans of this type, several articles of product are drawn from a production lot.
There is no AOQL for the plans used with destructive tests because destructive tests cannot be used to screen rejected lots.
ASTM B – 90() Standard Test Method of Variables Sampling of Metallic and Inorganic Coatings
This last plan utilizes smaller samples and so reduces the cost of inspection but with a sacrice in the ability to distinguish between acceptable and unacceptable lots.
The specic plans selected are identied in Tables of this test method. There may be instances in which tighter or looser plans or ones that are more discriminating are desired. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn.
Your basket is empty. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Here, a constant interval is maintained between the items drawn for the sample.