This standard specifies the procedure and sampling table for small batch sampling inspection of percentage of nonconforming products. This standard is applicable to single and double sampling inspection of batches of 10 to 250, especially for sampling inspection of products with high total inspection cost or destructive testing. When the batch quality level requirement exceeds the scope of this standard, the batch quality must be guaranteed by other methods. This standard is mainly used for the inspection of isolated batches, and can also be used for the inspection of continuous batches. This standard replaces GB/T13264-1991. On the basis of maintaining the main technical features of GB/T13264-1991, this standard has been revised in the following aspects: a) The standard text has been redrafted in accordance with the requirements of GB/T1.1. b) GB/T2828.1-2003 and GB/T2828.2-2008 have been added to the normative reference documents. c) A more concise and practical description is adopted for the generation of the tightened inspection plan for continuous serial batches (see 5.3.3.3, 5.3.3.4), and Tables 2 and 4 in the original standard are deleted. d) The terms and definitions of the original standard are modified and adjusted. "Inspection" is changed to "test", "sample size" is changed to "sample volume", and "sampling characteristics" is changed to "operating characteristics"; the term "operating characteristics (OC) curve" is added; the terms and definitions of this standard all adopt the latest expressions of ISO3534-2:2006. GB/T 13264-2008 Small batch sampling inspection procedures and sampling tables for percentage of non-conforming products GB/T13264-2008 standard download decompression password: www.bzxz.net
This standard specifies the small batch sampling inspection procedures and sampling tables for percentage of non-conforming products. This standard is applicable to single and double sampling inspection of batches of 10 to 250, especially for sampling inspection of products with high total inspection cost or destructive testing. When the batch quality level requirement exceeds the scope of this standard, other methods must be used to ensure the batch quality. This standard is mainly used for the inspection of isolated batches, and can also be used for the inspection of continuous batches.
This standard is formulated with reference to JEDEC No. 40-A (publication of the American Electronic Devices Council) "Small Batch Sampling Inspection Procedure".
This standard has made great improvements to the sampling plan table of JEDEC No. 40-A, improved the inspection procedure, and added many substantive contents, which are mainly reflected in the following aspects:
a) The accuracy of the p0 and p1 value tables has been comprehensively improved. The maximum absolute error of the acceptance probability at p0 and p1 of JEDEC No.40-A and the specified values
​​of 0.95 and 0.10 exceeds 0.10, while it does not exceed 0.04 in this standard.
b) In order to meet the needs of small batch sampling, the sample size series of this standard adopts the R10 priority number system, and the interval between batches and sample sizes is appropriately increased.
c) A secondary sampling plan that is approximately equivalent to the primary sampling plan is added to this standard, which can save the average number of samples and further reduce the sampling inspection cost.
d) JEDEC No.40-A only roughly mentions the use of small batch sampling in continuous batches, while this standard specifies and standardizes the sampling procedures and sampling tables (including secondary sampling plan tables) for small batch sampling in continuous batches.
This standard replaces GB/T13264-1991. This standard has been revised in the following aspects while maintaining the main technical features of GB/T13264-1991:
a) The standard text has been redrafted in accordance with the requirements of GB/T1.1.
b) GB/T2828.1-2003 and GB/T2828.2-2008 have been added to the normative references.
c) A more concise and practical description has been adopted for the generation of the tightened inspection plan for continuous serial batches (see 5.3.3.3, 5.3.3.4), and Tables 2 and 4 in the original standard have been deleted.
d) The terms and definitions of the original standard have been revised and adjusted. Change inspection to test, sample size to sample quantity, and sampling characteristics to operating characteristics; add the term operating characteristic (OC) curve; the terms and definitions of this standard all adopt the latest expressions of ISO3534-2:2006. This
standard was proposed by the China National Institute of Standardization.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Statistical Method Application.
The drafting units of this standard are: Ordnance Engineering College of the Chinese People's Liberation Army, China National Institute of Standardization, Institute of Mathematics and Systems Science of the Chinese Academy of Sciences, and Fuzhou Chunlun Tea Co., Ltd. The
main drafters of this standard are: Zhang Yuzhu, Yu Zhenfan, Chen Min, Ding Wenxing, Feng Shiyong, Ma Yilin, and Fu Tianlong.
The previous versions of the standards replaced by this standard are: GB/T13264-1991.

The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to an agreement based on this standard are encouraged to study whether the latest version of the dated referenced document can be used. For any undated referenced document, the latest version shall apply to this standard.
GB/T2828.1-2003 Sampling procedures for inspection by attributes Part 1: Sampling plans for inspection of lots indexed by acceptance quality limit (AQL) (ISO2859-1:1999, IDT)
GB/T2828.2-2008 Sampling procedures for inspection by attributes Part 2: Sampling plans for inspection of isolated lots indexed by limiting quality (LQ) (corresponding to ISO2859-2:1985, NEQ)
ISO3534-1:2006 Statistical vocabulary and symbols Part 1: General statistical terms and terms used in probability
ISO3534-2:2006 Statistical vocabulary and symbols Part 2: Applied statistics
Foreword I
1 Scope 1
2 Normative references 1
3 Terms, definitions and symbols 1
3.1 Terms and definitions 1
3.2 Symbols 2
4 Sampling inspection procedure 3
5 Implementation of inspection 3
5.1 Specifying product quality 3
5.2 Specifying the type of sampling plan 3
5.3 Selecting a sampling plan 3
5.3.1 Sampling plan table 3
5.3.2 Case of isolated batches 3
5.3.3 Case of consecutive batches 4
5.4 Taking samples 5
5.5 Inspecting samples 5
5.6 Determination of batch acceptability 5
5.7 Disposition of batches 6
References 23

ICS 03. 120. 30
National Standard of the People's Republic of China
GB/T 13264—2008
Replaces GB/T13264—1991
Sampling procedures and tables for small lot inspection by attributes for percent nonconforming itemsIssued on 2008-07-28
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaAdministration of Standardization of the People's Republic of China
Implementation on 2009-01-01
GB/T 13264—2008
2 Normative references
3 Terms, definitions and symbols
3.1 Term and definition
4 Sampling inspection procedure
Implementation of inspection
Specify product quality
Specify the type of sampling plan
5.3 Select sampling plan
5.3.1 Sampling plan table
5.3.2 Isolated batch situation
5.3.3 Continuous batch situation
5.4 Take samples
5.5 Test samples
5.6 Determination of batch acceptability|| tt||5.7 Disposal of batches
References
GB/T13264-2008
This standard is based on JEDEC No. 40-A (publication of the American Electronic Devices Council) "Small Batch Sampling Inspection Procedure". This standard has made great improvements to the sampling plan table of JEDEC No. 40-A, improved the inspection procedure, and added many substantive contents, which are mainly reflected in the following aspects: a) The accuracy of the p. and p. value tables has been fully improved. The maximum absolute error of the acceptance probability at p. and p. in JEDEC No. 40A and the specified values ​​of 0.95 and 0.10 exceeds 0.10. However, it does not exceed 0.04 in this standard. b) In order to meet the needs of small batch sampling, the sample series of this standard adopts the R10 priority number system, which appropriately increases the gap between batch and sample size.
c) A secondary sampling scheme that is approximately equivalent to the primary sampling scheme is added to this standard, which can save the number of samples and further reduce the sampling inspection cost.
d) JEDFC No. 40-A only roughly mentions the use of small batch sampling in continuous batches, while this standard specifies and standardizes the sampling procedures and sampling tables (including secondary sampling scheme tables) for small batch sampling in continuous batches. This standard replaces GB/T13264-1991. On the basis of maintaining the main technical features of GB/T13264-1991, this standard has been revised in the following aspects:
a) The standard text is redrafted in accordance with the requirements of GB/T1.1. GB/T2828.1-2003; GH3/T2828.2-2008 are added to the normative reference documents. b)
A more concise and practical description is adopted for the generation of the tightened inspection plan for continuous serial batches (see 5.3.3.3, 5.3.3.4), and Table 2 and Table 4 in the original standard are deleted. d) The terms and definitions of the original standard are modified and adjusted. "Inspection" is changed to "test", "sample size" is changed to "sample quantity", and "sampling characteristics" is changed to "operating characteristics"; the term "operating characteristic (OC) curve" is added; the terms and definitions of this standard all adopt the latest expressions of ISO3534-2.2006. This standard is proposed by the China National Institute of Standardization. This standard was issued by the National Technical Committee for the Promotion of Standardization of Statistical Methods. The drafting units of this standard are: Ordnance Engineering College of the Chinese People's Liberation Army, China National Institute of Standardization, Institute of Mathematics and Systems Science of the Chinese Academy of Sciences, and Fuzhou Chunlun Tea Co., Ltd. The main drafters of this standard are: Zhang Yuzhu, Ding Zhenfan, Chen Min, Ding Wenxing, Feng Shiyong, Ma Lin, and Fu Tianlong. The previous versions of the standards replaced by this standard are: GB/T13264:1991. 1
1 Scope
Small batch counting sampling inspection procedures and sampling tables for the percentage of non-conforming products
This standard specifies the small batch counting sampling inspection procedures and sampling tables for the percentage of non-conforming products. GB/T13264—2008
This standard is applicable to the counting single and double sampling inspection of batches of 10 to 250, especially for the sampling inspection of products with high total inspection costs or destructive testing. When the batch quality loss level requirements exceed the scope of this standard, other methods must be used to ensure the batch quality. This standard is mainly used for the inspection of isolated batches, and can also be used for the inspection of continuous batches. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all referenced documents with an import date, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to an agreement based on this standard are encouraged to study whether the latest version of the referenced document with an import date can be used. For all referenced documents without an import date, the latest version applies to this standard.
GB/T2828.1-2003 Sampling inspection procedures for attributes Part I: Sampling plan for batch inspection based on acceptance quality limit (AQL) (ISO2859-11999, ID)
GB/T2828.2-2008 Sampling inspection procedures for attributes Part 2: Sampling inspection plan for isolated batches based on limited quality (LQ) (corresponding to ISO2859-2:1985NEQ)||tt| |ISO3534-1:2006 Statistical vocabulary and symbols Part 1: General statistical terms and terms used in probability ISO3534-2:2006 Statistical vocabulary and symbols Part 2: Applied statistics 3 Terms, definitions and symbols
The terms and symbols established in GB/T 2828.1-2003, ISO35341:2006 and ISO3534-2:2006 and the following terms and definitions apply to this standard.
3.1 Terms and definitions
Producer's risk
(acceptance sampling) The probability of not being accepted by the acceptance sampling plan when the quality level is acceptable. NOTE I: The quality level can be related to the nonconforming (defective) rate and is acceptable compared to the AQL. NOTE 2: To interpret the producer's risk, it is necessary to know the quality level involved. ISO3534-2.2006,4.6.4]
consumer's rlsk
User's risk
(acceptance sampling) is the percentage of samples that are accepted by the acceptance sampling plan when the quality level is almost unsatisfactory. [1S0 3534-2:2006,1. 6. 2]
Producer's risk quality producer's risk quality (acceptance sampling for acceptance sampling plan, and the specified producer risk corresponding to the quality level of the batch or process. Society 1: The type of operating characteristic curve must be specified. Society 2, the producer's risk is generally specified as 5%. 1
GB/T13264—2008
ISO 3534-2.2006,4.6.10
Consumer's risk quality gonsumer's risk guality (acceptance sampling> For acceptance sampling plan, and the specified user risk corresponding to the quality level of the batch or process. Note: The user's risk is generally specified as 10%. [IS0 3534-2.2005.4,6,9]
Operating characteristic (OC) curve operatingcharacteristiccurve For a given acceptance sampling plan, the curve that represents the relationship between the probability of acceptance of a product and the quality level. Note: The (center) curve determined by the production risk and the user risk is shown in Figure 1. [1S0 3534 2: 2006,4. 5. 1]
Acceptance rate
Risk point of producer
Risk point of user
3.2 Symbols
NBatch
Sample size of the first sampling plan
The first sample size of the second sampling plan
The second sample size of the second sampling plan
Producer
Risk quality check
User
Risk quality check
nThe common sample size of the first sample and the first sample of the second sampling plan, that is, n=n=nAcThe acceptance number of the first sampling plan
ReThe rejection number of the first sampling plan, Re=Ac+1[AcRe,
LAc2Re]
Batch
Quality rate
Decision array of a single sampling plan, Ac. represents the first acceptance number, Rel represents the first rejection number, Ac2 represents the second acceptance number, Re2 represents the second rejection number
α, PR producer risk
B.CR user risk
pt, PRQ producer risk quality
Note: When this standard is used for isolated batch inspection, P can be defined as the qualified quality level. 2
1,CRQ user risk quality
AQL acceptance quality limit
QC operating characteristic curve
4 Sampling inspection procedure
Specify product quality;
b) Specify the type of sampling plan;
c) Select the sampling plan;www.bzxz.net
d) Draw samples;
c) Inspect samples;
f) Determine the acceptability of the batch;
g) Deal with unacceptable batches.
5 Implementation of inspection
5. 1 Specify product quality
GB/T13264—2008
Through comprehensive consideration of production capacity, manufacturing cost, quality requirements, inspection costs and working hours, it shall be determined by negotiation between the manufacturer and the user.
For isolated batches, the producer's risk quality and the user's risk quality value shall be specified. For continuous batches, the value of the acceptance quality limit AQL should be specified. 5.2 Specify the type of sampling plan
The selection of primary sampling and secondary sampling plans depends on factors such as the difficulty of random inspection and the average sampling size. The secondary sampling plan is simple to use. The average sampling size required for the secondary sampling plan is generally smaller than the sample size of the primary sampling plan. 5.3 Selecting the sampling plan
5.3.1 Sampling plan table
Tables 3, 4 and 5 in this standard give the primary sampling plan with the acceptance number Ac of 0, 1 and 2 respectively, and Tables 6 and 7 give the secondary sampling plan with the judgment array of [0 21[0 3-
[2] and [2 3
] respectively.
When the batch N, producer risk quality and user risk quality are specified, the sub-sampling plan that meets (or is close to) the requirements can be found in Tables 3 to 5, and the sub-sampling plan that meets (or is close to) the requirements can be found in Tables 6 and 7. When the batch, sample and acceptance number or judgment array are specified, the values ​​of producer risk quality and user risk quality corresponding to the specified sampling plan can be found in Tables 3 to 7. Table 8 gives the corresponding relationship between the acceptance number and judgment array of the primary sampling plan and the approximately equivalent sub-sampling plan, as well as the sample size. There is no approximately equivalent primary sampling plan for the primary sampling plan of Ac-0. When used for continuous batch inspection, according to the specified acceptance quality limit, the sub-sampling plan that meets (or is close to) the requirements can be obtained from Tables 3 to 5, and the sub-sampling plan that meets (or is close to) the requirements can be found in Tables 6 and 7. 5.3.2 Case of isolated batches
5.3.2. 1 Specifying the values ​​of Pa and P1
For different types of nonconforming or unqualified products, the values ​​of Pa and P1 can be specified respectively. Here P is the producer risk quality when the producer risk is 0.05, that is, the qualified quality level 1 is the user risk quality when the user risk is 0.10. 5.3.2.2 Selection of sampling plan
When the batch N, producer risk quality P and user risk quality are specified, find the table corresponding to the batch N from Tables 3 to 5, and then find the table values ​​composed of the values ​​of Pa and P1 from these three tables, so that the table value does not exceed and is closest to the specified value, and at the same time makes the table value not exceed and is closest to the specified value. 3
GB/T 13264—2008
The sample size required is the sample given by the leftmost row of the table value. If p. If the pair of table values ​​of and force is found in Table 3, then take Ac=0; if it is found in Table 4, then take Ac=1; if it is found in Table 5, then take Ac=2. If the appropriate pair of and P values ​​cannot be found in Tables 3 to 5, the table values ​​appear. If the P value exceeds the specified value, or the table value P exceeds the specified force, value, or both situations occur at the same time, the manufacturer and the user need to negotiate again and redefine the values ​​of and (oh).
Example 1: If the batch basis is N=50, and the regulations are =10(%) and -60%), try to find an available one-time sampling inspection plan. From Tables 3 to 5, only from the table column of the batch of 50 in Table 4, the table values ​​P=8.4(%) and =57(%) are found, which are respectively less than and closest to the regulations. and p, value, from this - the row where the table value is located, we can find the required sample size of 5 to the left, and since this pair of table values ​​can only be found in Table 4, we take the acceptance number Ac-1, so we find a sampling plan that is close to the quality requirement of the disk, nu=, Ac=1, and we need to reduce the inspection cost, and hope that the sample size is smaller, so we must re-define the sum value. If P-11 (Lo) and force = 67 (%) are specified, it can be seen from Table 4 that the corresponding sampling force plan is na = 1, Ac = 1. 5.3.2.3 Selection of secondary sampling plan
When the batch N is specified, the production risk quality P. and user risk quality force: when, find the table column corresponding to the specified batch from Table 6 and Table 7, and then find a pair of table values ​​consisting of and P1 values ​​from these two tables, so that the table value Pa does not exceed and is closest to the specified P value. At the same time, the table value force does not exceed and is closest to the specified P value. In the leftmost column of the row where this pair of table values ​​is located, find the common sample degree n of the first sample and the second sample. Fo27
, if it is found in Table 7,
If this pair of table values ​​of P and P is found in Table 6, then the judgment array is 12
Then the judgment array is
Example 2: If the batch is N=50, the specified force=10(%) and force=60(%), try to find the available two-drink sampling inspection plan. From the table column with a batch of 50 in Table 6, the table values ​​pe=7. 3(%) and p1=56(%) can be found, which are respectively less than and closest to the specified force. and p1 values. In the series with batch number 5 in Table 9, no more suitable table value pair can be found. And. From the leftmost column of the row where this pair of table values ​​is located in Table 6, the common sample size n=3 of the first sample and the second sample is found. Since this pair of table values ​​is found in Table 6, the required subsampling plan is n=3, Ac Rer-_ ?
LAcaReLi2]-
5.3.3 Case of continuous batches
5.3.3.1 For different types of nonconforming products, the value of the acceptance quality limit AQL can be specified separately. 5.3.3.2 Transfer rules
This standard only includes normal inspection and tightened inspection specified in GB/T2828.1, but does not include relaxed inspection. Unless otherwise specified, normal inspection should be used at the beginning of inspection. b) From normal inspection to tightened inspection. When conducting normal inspection, if two batches are not accepted after initial inspection in no more than five batches in a row, the inspection shall be switched to strict inspection from the first batch. From strict inspection to normal inspection. When conducting strict inspection, if five batches are accepted after initial inspection in a row, the inspection shall be switched to normal inspection from the next batch. After the start of strict inspection, if the number of rejected batches reaches five batches, the inspection in accordance with the provisions of this standard shall be suspended. d) After the inspection is suspended, if the supplier takes effective measures to make the quality of the batches submitted for inspection meet or exceed the specified quality requirements, the inspection may be resumed with the consent of the responsible department. In principle, the resumption of inspection shall start from strict inspection. Note: The batches inspected above refer to the batches inspected initially, excluding the batches submitted for re-inspection. 5.3.3.3 For one-time sampling, the one-time sampling plan can be directly found in Tables 3 to 5 as the sampling plan for normal inspection. When strict inspection is required, the sampling plan for strict inspection is obtained according to the following rules: When Ac=0 or Ac1 in the sampling plan for normal inspection, the sample size of the strict inspection plan is determined according to Table 1, and the acceptance number remains unchanged; when Ac2 in the sampling plan for normal inspection, the samples of the strict inspection and normal inspection plans are the same, and Ac=1 in the sampling plan for strict inspection. 4
Normal inspection
Strict inspection
GB/T 13264—2008
Table 1 Sample size comparison table of the normal inspection and strict inspection primary sampling plan with Ac=0 or Ac=13
80100120
Example 3: If o5, Ac=0 is used as the normal inspection primary sampling plan, the corresponding strict inspection primary sampling plan is n—8, Ac—0.5.3.3.4 For the secondary sampling, the primary sampling plan can be directly found from Tables 6 and 7 as the normal sampling plan. When tightened inspection AciRer?
is required, the tightened inspection sampling plan is obtained according to the following rules: When the judgment array in the normal inspection sampling plan is LAcyRca-
, the sample size of the tightened inspection plan is determined according to Table 2, and its judgment array remains unchanged. When the judgment array in the normal inspection sampling plan is L121
Ac Ret\_「o 3].
, the sample sizes of the tightened inspection and normal inspection sampling plans are the same. The judgment array LAc2 ReaL23』
in the tightened inspection sampling plan is [12]
Re,]_[0 2-
Table 2 Comparison table of sample sizes of secondary sampling plans for normal inspection and tightened inspection with judgment array
LAc
Normal inspection
Tightened inspection
Example 4: If mn = 6 is adopted and
AcsRet
1 65 85
as the normal inspection sampling plan. When tightening the inspection, the second new sample plan should be used mm-0 [,]-[ ]
5.3.3.5 When the batch size N and the acceptance quality limit AQL are specified, the normal inspection sampling plan can be found as follows. Find the column where the specified batch size is located from Tables 3 to 5, and find the one that does not exceed and is closest to the specified AQL in these three columns: value. If this p value is found in Table 3, take Ac=0; if it is found in Table 4, take Ac-1; if it is found in Table 5, take Ac=2. The leftmost column of the row where this p value is located is the sample size n of the required single sampling plan. Find the column where the specified batch size is located from Tables 4 and 5, and find the value that does not exceed and is closest to the specified AQL in these two columns. If this p value is in Table 6 If it is found in Table 7, the decision array is [2]027
; if it is found in Table 7, the decision array is [037
, and the leftmost column of the row where this o value is located is the sample size nL23]
of the required secondary sampling plan. 5.3.3.6 In determining the normal inspection sampling plan, in addition to considering the p value, the Pl value can also be considered. Example 5: If N=3, and AQ1,=1. 0(%) is specified, a normal inspection single sampling plan is to be selected. It can be seen from Table 3 that the sampling plan 2-5 and Ac0 can meet the requirements of ≤AQL. The corresponding p =31(%). If the user can accept pi =3-1(%) as the user's risk quality, =3 and Ac=0 can be used as the normal inspection single sampling plan. 5.4 Sampling
All samples shall be randomly selected from the whole batch. The sampling time is generally after the batch is formed, but it can also be carried out during the batch formation process.
5.5 Inspection of samples
Inspection of samples means inspecting the individual units of products in the sample according to the technical standards of the products or the product quality standards stipulated in the order contract, and classifying them into qualified or unqualified products one by one. 5.6 Determination of batch acceptability
When a single sampling plan is adopted, according to the results of the sample inspection, if the number of unqualified products found in the sample is less than or equal to the acceptance number Ac, the batch is accepted; if it is greater than or equal to the rejection number Re, the batch is not accepted. When the secondary sampling plan is adopted, according to the results of the sample inspection, if the number of non-conforming products found in the first sample is less than or equal to the first acceptance number Ac, the batch is accepted; if the number of non-conforming products found in this sample is greater than or equal to the first rejection Re, the batch is not accepted: if the number of non-conforming products found in this sample is less than Ac, but less than Rel, continue to draw the second sample, if the total number of non-conforming products found in the two samples is less than or equal to the second acceptance number Ac, the batch is accepted; if the total number of non-conforming products is greater than or equal to the second rejection number Rc, the batch is not accepted. 5.7 Disposal of batches
For batches judged to be accepted, the user shall accept the whole batch, and the non-conforming products in the sample shall be removed or replaced. If non-conforming products are found in the batch again, it will not affect the judgment made. The handling of these non-conforming products shall be negotiated and resolved by the manufacturer and the user. For the batches that are judged as unacceptable, they can be screened, repaired or reduced in price according to the technical standards of the products or the specific provisions in the order contract and other documents. Special products can also be scrapped or the unqualified products can be repaired and then submitted for inspection again. The inspection items of the resubmitted batches shall be carried out according to the provisions in the technical standards or order contracts and other documents.6 Determination of lot acceptability When a single sampling plan is adopted, according to the results of sample inspection, if the number of defective products found in the sample is less than or equal to the acceptance number Ac, the batch is accepted; if it is greater than or equal to the rejection number Re, the batch is not accepted. When a double sampling plan is adopted, according to the results of sample inspection, if the number of defective products found in the first sample is less than or equal to the first acceptance number Ac, the batch is accepted; if the number of defective products found in this sample is greater than or equal to the first rejection Re, the batch is not accepted: if the number of defective products found in this sample is less than Ac, but less than Rel, continue to draw the second sample, if the total number of defective products found in the two samples is less than or equal to the second acceptance number Ac, the batch is accepted; if the total number of defective products is greater than or equal to the second rejection number Rc, the batch is not accepted. 5.7 Disposal of batches
For batches judged as accepted, the user shall accept the whole batch, and the non-conforming products in the samples shall be removed or replaced. If non-conforming products are found again in the batch, it shall not affect the judgment already made. The handling of these non-conforming products shall be resolved through negotiation between the manufacturer and the user. For batches judged as unacceptable, they may be screened, repaired or reduced in price in accordance with the specific provisions in the product technical standards or order contracts and other documents. Special products may also be scrapped or the non-conforming products may be repaired and then submitted for inspection again. The inspection items of the resubmitted batch shall be carried out in accordance with the provisions in the technical standards or order contracts and other documents. 6
GB/T13264—2008
GB/T 13264—2008
19 '℃
%/智业
GB/T 13264—20086 Determination of lot acceptability When a single sampling plan is adopted, according to the results of sample inspection, if the number of defective products found in the sample is less than or equal to the acceptance number Ac, the batch is accepted; if it is greater than or equal to the rejection number Re, the batch is not accepted. When a double sampling plan is adopted, according to the results of sample inspection, if the number of defective products found in the first sample is less than or equal to the first acceptance number Ac, the batch is accepted; if the number of defective products found in this sample is greater than or equal to the first rejection Re, the batch is not accepted: if the number of defective products found in this sample is less than Ac, but less than Rel, continue to draw the second sample, if the total number of defective products found in the two samples is less than or equal to the second acceptance number Ac, the batch is accepted; if the total number of defective products is greater than or equal to the second rejection number Rc, the batch is not accepted. 5.7 Disposal of batches
For batches judged as accepted, the user shall accept the whole batch, and the non-conforming products in the samples shall be removed or replaced. If non-conforming products are found again in the batch, it shall not affect the judgment already made. The handling of these non-conforming products shall be resolved through negotiation between the manufacturer and the user. For batches judged as unacceptable, they may be screened, repaired or reduced in price in accordance with the specific provisions in the product technical standards or order contracts and other documents. Special products may also be scrapped or the non-conforming products may be repaired and then submitted for inspection again. The inspection items of the resubmitted batch shall be carried out in accordance with the provisions in the technical standards or order contracts and other documents. 6
GB/T13264—2008
GB/T 13264—2008
19 '℃
%/智业
GB/T 13264—2008
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