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GB/T 6378.1-2008 English PDF

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GB/T 6378.1-2008: Sampling procedures for inspection by variables -- Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL
Status: Valid

GB/T 6378.1: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 6378.1-2008English1734 Add to Cart 8 days [Need to translate] Sampling procedures for inspection by variables -- Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL Valid GB/T 6378.1-2008
GB/T 6378-2002EnglishRFQ ASK 14 days [Need to translate] Nonconforming rate measurement sampling procedures and chart (Suitable for continuous batch inspection) Obsolete GB/T 6378-2002
GB/T 6378-1986EnglishRFQ ASK 14 days [Need to translate] Sampling procedures and charts for inspection by variables for percent nonconforming (Applied to inspection of successive lots or batches) Obsolete GB/T 6378-1986

PDF similar to GB/T 6378.1-2008


Standard similar to GB/T 6378.1-2008

GB/T 6379.6   GB/T 2828.2   GB/T 8170   GB/T 6378.7   GB/T 6378.3   GB/T 6380   

Basic data

Standard ID GB/T 6378.1-2008 (GB/T6378.1-2008)
Description (Translated English) Sampling procedures for inspection by variables -- Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A41
Classification of International Standard 03.120.30
Word Count Estimation 87,830
Date of Issue 2008-07-28
Date of Implementation 2009-01-01
Older Standard (superseded by this standard) GB/T 6378-2002
Quoted Standard GB/T 2828.1-2003; ISO 3534-1-2006; ISO 3534-2-2006
Adopted Standard ISO 3951-1-2005, IDT
Regulation (derived from) Announcement of Newly Approved National Standards No. 12 of 2008 (No. 125 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the measurement of a sampling program of acceptance sampling system, this part of the grant received by the process is essentially the percentage of nonconforming product (from the process of randomly selected samples of each batch to estimate) decision. Sampling procedures in this section do not apply to pre -conforming product is filtered batch.

GB/T 6378.1-2008: Sampling procedures for inspection by variables -- Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL



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Sampling procedures for inspection by variables Part 1. Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL ICS 03.120.30 A41 National Standards of People's Republic of China GB/T 6378.1-2008/ISO 3951-1.2005 Replacing GB/T 6378-2002 Sampling Inspection procedures - Part 1. press reception Quality limit (AQL) to retrieve a single quality characteristic A sampling program and batch testing of single AQL (ISO 3951-1.2005, IDT) Posted 2008-07-28 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Symbol 4 5 acceptance quality limit (AQL) 5 5.1 Principle 5 5.2 Purpose 5 Provisions 5.3 AQL value of 5 Priority 5 5.4 AQL value 5.5 Note 5 5.6 restricted 5 6 normal, tightened and relaxed transfer rules examination 5 7 Relationship with GB/T 2828.1 6 7.1 Similarities 6 7.2 6 different points 8 limiting quality protection 6 8.1 single program 6 8.2 Consumer risk Table 7 8.3 Producer Risk Table 7 8.4 operating characteristic curve 7 9 Planning 7 Select 710 between measuring and counting Choose between 8 and σ Law Act 11 Ju 12 levels and AQL Inspection Selection 8 Select sampling plan 13 8 13.1 Standard Scheme 8 13.2 special programs 9 14 preparatory action 9 Standard procedures 15 Ju Law 9 15.1 retrieval programs, sampling and preliminary calculation 9 Acceptance criteria sided specification limit of 15.2 9 15.3 Unilateral specification limit of 10 Graphic 15.4 Joint Bilateral specification limit test acceptance criteria of 11 16 σ standard procedure law 15 16.1 retrieval programs, sampling and preliminary calculation of 15 16.2 Acceptance criteria unilateral specification limit of 15 GB/T 6378.1-2008/ISO 3951-1.2005 16.3 Joint Bilateral specification acceptance criteria limit 16 17 continuous testing procedure 17 18 Normality and outliers 17 18.1 Normality 17 18.2 outliers 17 19 records 17 19.1 Control Figure 17 19.2 does not receive the grant 17 1720 implementation of the transfer rule 21 test pause and resume 18 Conversion between 22 Ju law and σ Act 18 Process standard deviation of the estimated 22.1 18 22.2 Statistics controlled state 18 22.3 from Ju law to σ Act 18 22.4 from σ method to method Ju 18 23 Chart A --- a standard sample size code with a predetermined sampling program of 18 quality levels Chart 24 Chart B to R (Figures 5 to 19) --- sample size code letter B to the operating characteristic curve of R and several tables, Ju Act 20 25 chart to Ju Ju -R & lt -D (FIG. 20 to FIG. 32) --- Joint Bilateral reception specification limit curve, Ju Method 35 Appendix A (normative) to determine the sample size Table 48 Receiving constant k 50 Annex B (normative) Ju law a sampling plan Receiving constant k Appendix C (Normative Appendix) σ method of a sampling program of 53 Annex F (normative) sample size of 3 process percent nonconforming estimated Ju Act 60 Value Appendix H (normative) sample standard control limit difference in coefficient of U Ba 65 Annex I (normative) reduced inspection qualification Additional receiving constant 66 Appendix J (normative) and σ calculated Ju procedures 67 Annex K (normative) consumer's risk quality 69 Annex L (normative) producers risk 73 Operating characteristics Appendix M (normative appendix) σ Law 77 Annex N (normative) sample size estimation process 3 and 4 percent nonconforming, Ju Act 78 References 80 GB/T 6378.1-2008/ISO 3951-1.2005

Foreword

GB/T 6378 "Sampling Inspection Program" will be divided into the following sections, the expected structure and the corresponding international standards and will be replaced National standards. --- Part 1. by acceptance quality limit (AQL) to retrieve a single quality characteristic and a single AQL sampling batch inspection once meter Plan (ISO 3951-1.2005, IDT; instead of GB/T 6378-2003) --- Part 2. by acceptance quality limit (AQL) to retrieve a sampling program for batch inspection of independent quality characteristics (corresponding to ISO 3951-2.2006) --- Part 3. by acceptance quality limit (AQL) to retrieve the second batch inspection sampling plan (ISO 3951-3.2007) --- Part 4. The mean level of declared quality assessment procedures (ISO /WD3951-4.2007, NEQ; instead of GB/T 14900-1994) --- Part 5. Measurement by acceptance quality limit (AQL) to retrieve sequential sampling inspection plan (corresponding to ISO /FDIS3951-5.2005) GB/T 6378 This part identical with the international standard ISO 3951-1.2005 "Sampling procedures for inspection of measurement - Part 1. press reception Quality limit (AQL) to retrieve the provisions of a single quality characteristic and a single AQL test batch of a sampling plan. " This section GB/T 6378 instead of GB/T 6378-2003 "sampling inspection procedures and charts percent nonconforming (applies even Continued testing batch). " This portion of the GB/T main difference between 6378-2003 as follows. --- Cancel the terms related to substandard classification. --- Canceled the implementation process. --- AQL is acceptance quality limit (AcceptanceQualityLimit) acronym, it is more than GB/T 6378-2003 can be accessed using Reception quality level (AcceptableQualityLevel) more accurately reflect its role. --- GB/T 6378 This section applies to a single normal distribution of quality characteristics of sampling. GB/T 6378 This section also Including bilateral joint specification limit situation, and about the separation of content and complex bilateral specification limits the GB/T 6378.2 in at Management. More general procedures for multiple quality characteristics and/or multiple AQL will be given in GB/T 6378.2 in. --- GB/T 6378 Ben sampling program has been part of the amendment to the GB/T 2828.1 Sampling programs operating characteristic curve A better match. Ju method and sample volume σ law both in the primary table row is constant. --- All received constant (see Appendix B, Appendix C, Appendix G and Appendix I) after correction to three decimal columns in the corresponding AQL in. --- Recalculated the operating characteristics of all table values, like normal, like to relax tightened inspection and processing tests also carried out direct calculations. --- Removed appendix contains general statistical theory. Plans to move its content on Sampling Inspection Program Guides are. --- In the appendix to reschedule the execution of the program required form. This section of the Appendices A to N are normative appendix. This part of the application by the National Standardization Technical Committee on statistical methods and focal points. This section drafted by. People's Liberation Army Ordnance Engineering College, China National Institute of Standardization, Academy of Mathematics and Systems Science Research Institute, Suzhou University, Fuzhou Chun Lun Tea Limited. The main drafters of this section. Zhang Yuzhu, YU Zhen Fan, Dingwen Xing, Chen Min, Feng Shi Yong, Wang Renguan, Futian Long. This part of the standard replaces the previous editions are. --- GB/T 6378-1986; --- GB/T 6378-2003. GB/T 6378.1-2008/ISO 3951-1.2005

Introduction

GB/T 6378 This section provides a sample measurement system acceptance sampling inspection plan, which takes acceptance quality limit (AQL) for the cable lead. GB/T 6378.2 gives a wider range of technical process. GB/T 6378 This section is GB/T 2828.1 supplement. Objective GB/T 6378 Part of the process is given to ensure that the actual quality level is better than the reception quality limit contact with a high probability of installment Income, while ensuring the actual quality level is inferior to the reception quality limit granted to low probability of receiving. The above object is transferred through the supplied standard Rules implemented. a) When they find the quality deteriorated, by moving to tightened inspection or sampling pause automatically provide protection to the consumer; b) if consistently good quality, by transferring to the small sample size sampling scheme to reduce inspection costs to stimulate the production side. GB/T 6378 this part of the grant received by the process is essentially the percentage of nonconforming product (from the process of randomly selected samples of each batch Estimated) decision. Inspection procedures GB/T 6378 This section applies to a continuous series of discrete individual batches of products, that all products produced by the same party in the same Production process available. If products from different manufacturers and production processes, respectively, should use GB/T 6378 this part. GB/T 6378 This section applies only to a single quality characteristic can be measured in a continuous scale; for two or more quality characteristics of the situation See GB/T 6378.2. GB/T 6378 This section assumes that the measurement error is negligible. When you need to consider the measurement error, see reference [17]. GB/T 6378 This section relates only to the bilateral joint specification limit, other forms of specification limits, see GB/T 6378.2. This standard is to nonconforming percentage of quality indicators measured test includes several models, the possible combinations of users, the more Complex. --- Standard deviation is unknown, or the beginning of the unknown can then be estimated fairly accurately, or at the start of testing that is known; --- Joint bilateral or unilateral specification limit specification limit; --- Normal inspection, tightened inspection or reduced inspection. GB/T 6378 This section contains 14 appendices. Appendices A to I give different sampling procedures required tables. Appendix J Description How to obtain the sample standard deviation Ju and process standard deviation σ. Appendix K provides a statistical theory to calculate consumer's risk, but the list is given Normal, tightened and relaxed Ju corresponding risk value method and σ method when testing. Appendix L gives similar information producers risk. Appendix M A general formula σ operating characteristics of the law. Appendices N specifically gives the GB/T 6378 Part Ju methodology in the amount of 3 and 4 When the estimation process defective product rate of statistical theory, because the technology to handle this situation two cases with different amounts of other samples. To facilitate the application of GB/T 6378 this part, Table 1 user in different situations may want to use the content of this section And chart gives guidance. Although Table 1 only the contents of the first chapter about 15,16,20,21 and 22, but no matter what kind of situation, you must first read Reading other relevant provisions. GB/T 6378.1-2008/ISO 3951-1.2005 Book Book Book . 1 . 2 . 3 . 1 . 1 , A . 2 . 1 . 1 . 2 . 1 . 1 , A . 2 . 1 . 1 . 4 . 1 . 1 , A . 2 , D . 1 (Correct ), (Correct ), Ju - Ju - . 1 . 3 . 1 . 1 , A . 2 . 1 , E . 2 . 3 . 1 , B . 2 . 2 . 3 . 1 , C . 2 . 2 . 3 . 1 , D . 2 Ju - Ju - . 2 . 3 . 1 , C . 2 , E . 4 . 5 . 1 , B . 3 . 4 . 5 . 1 , C . 3 . 4 . 5 . 1 , D . 3 Ju - Ju - . 4 . 5 . 2 . 2 . 2 Ju - Ju - . 4 GB/T 6378.1-2008/ISO 3951-1.2005 Sampling Inspection procedures - Part 1. press reception Quality limit (AQL) to retrieve a single quality characteristic A sampling program and batch testing of single AQL

1 Scope

GB/T 6378 This section provides a sample metering system acceptance sampling plan, accepting this section installment consists essentially of Process percent nonconforming (from the process random samples of each batch to estimate) decision. Sampling procedures for inspection of this section does not apply to non-conforming product has been previously screened lot. This section is under the following conditions. a) Inspection procedures in this section applies to a continuous series of discrete individual batches of products, that all products produced by the same parties over the same production Cheng provided; b) consider only a single product quality characteristics x0, the quality characteristics shall measure a continuous scale; c) measurement error can be ignored, that is, its standard deviation is not more than 10% of the standard deviation of the process; d) the production process is stable (in statistical control state), and the quality characteristics x0 approximate normal distribution or normal distribution; e) if the contract or the standards set forth in the specification limit U, lower specification limit L, or at the same time it provides for both; if and only if the product is measured When quality characteristics is qualified to meet one of the following inequality x0 product. 1) quality characteristics x0 ≥L (ie, not below the lower specification limit); 2) quality characteristics x0 ≤U (ie, no higher than the upper specification limit); 3) quality characteristics L≤ x0 ≤U (quality characteristics between lower specification limit and upper specification limit). 1) and 2) case called unilateral specification limit, 3) cases referred to bilateral specification limit. If the application of bilateral specification limit, this section assumes that both specification limit for qualifying products or not as important; in this case, should the use of ultra A bilateral specification limit in any one single combined percent nonconforming AQL. This is called "joint control."

2 Normative references

The following documents contain provisions which, through reference to GB/T 6378 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 2828.1-2003 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch test sample Programme (ISO 2859-1.1999, IDT) ISO 3534-1.2006 Statistics Vocabulary and symbols - Part 1. General statistical terms and terms used in probability theory ISO 3534-2.2006 Statistics Vocabulary and symbols - Part 2. Applied Statistics

3 Terms and Definitions

ISO 3534-1.2006, ISO 3534-2.2006 and the terms and definitions GB/T 2828.1-2003 established the following terms and Definitions apply to this section. 3.1 Value check carried out by measuring the mass per unit of product characteristics. [ISO 3534-2.2006,4.1.4] GB/T 6378.1-2008/ISO 3951-1.2005

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