#ANSI SAMPLING TABLE CODE#

If made orally, written confirmation may be required. A request for an appeal inspection may be made orally or in writing. Any interested party who is not satisfied with the results of a condition inspection on packaged food containers, as stated on an official certificate, may request an appeal inspection. At the option of the user of the service and when approved by the Administrator, such user may elect to remain on normal inspection when qualified for reduced inspection, or on tightened inspection when qualified for normal inspection. (e) When the rules require a switch in the inspection status because of one or more classes of defects, all classes of defects shall be inspected under the new inspection criteria. When tightened inspection is in effect, normal inspection shall be reinstituted when five consecutive inspection lots have been considered acceptable on original inspection. (4) Tightened inspection to normal inspection. When normal inspection is in effect, tightened inspection shall be instituted when 2 out of 5 consecutive inspection lots have been rejected on original inspection. (3) Normal inspection to tightened inspection. (iii) Other valid conditions warrant that normal inspection shall be reinstituted. (ii) Production becomes irregular (delayed or accelerated) or (i) An inspection lot is rejected on original inspection or When reduced inspection is in effect, normal inspection shall be reinstituted if any of the following occur: (2) Reduced inspection to normal inspection. If a double sampling plan is used, all samples inspected should be included, not РІР‚СљfirstРІР‚Сњ samples only and (ii) The total number of defects in the samples from the preceding 10 inspection lots (or such other number of lots used for condition in paragraph (d)(1)(i) of this section) is equal to or less than the applicable number given in Table III-B. (i) The preceding 10 inspection lots (or more, as indicated by the note to Table III-B) which have been inspected within the preceding 6 months have been on normal inspection and none has been rejected on original inspection and When normal inspection is in effect, reduced inspection shall be instituted providing that reduced inspection is considered desirable by the Administrator and further provided that all of the following conditions are satisfied for each class of defect: (1) Normal inspection to reduced inspection. Application of the following switching rules will be restricted to the inspection of lots for one applicant at a single location (plant, warehouse, etc.), and will be based upon records of original inspections of lots (excluding resubmitted lots) at that same location. The normal inspection procedure shall be followed except when conditions in paragraph (d) (1) or (3) of this section are applicable or unless otherwise specified. Sampling plans for reduced inspection are those in Tables III and III-A. Sampling plans for tightened inspection are those in Tables II and II-A. These plans shall be used except when the history of inspection permits reduced inspection or requires tightened inspection.

Sampling plans for normal inspection are those in Tables I and I-A. For these reasons, many companies prefer to select sampling plans based solely on the OC curve with well-defined and meaningful values for AQL and LTPD.Р’В§ 42.108 Normal, tightened, or reduced inspection. Third, these plans consider only AQL in determining a sampling design and in that sense, give the appearance of placing lesser importance on the consumer. Thus, increasing sample size as lot size increases can lead to needless oversampling. Second, when sample size is small relative to the total number of units in a lot, lot size has no impact on the calculations needed to derive the OC curve. This requires a sometimes complicated record keeping process that might not be feasible or desirable. First, strict adherence to the overall ANSI/ASQ Z1.4 sampling system requires switching rules that either increase or decrease the sample size on a given lot based on the historical performance of the output. However, it is not without its drawbacks. The ANSI/ASQ process is thought to be a generally acceptable practice by most regulatory agencies.

#ANSI SAMPLING TABLE CODE#

The desired AQL and code letter then determine the values for n and a. The sample size selected is determined based on the lot size through the use of code letters.

Ansi sampling table