JIS-Z-9015-2-1999-R2005-ENG.pdf
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1、JIS JIS Z 9015-2 :1999 JAPANESE IN DUSTRIAL STANDARD Translated and Published by Japanese Standards Association Sampling procedures for inspection by attributes- Part 2 :.Sampling plans indexed by limiting quality (LQ) for isolated lot inspection ICs 03.120.30 Descriptors : inspection by attributes,
2、 inspection by variables, counting, quality Reference number : JIS Z 9015-2 : 1999 (E) control, statistical quality control, sampling equipment, sampling tables 15 S Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie No
3、t for Resale, 03/14/2007 02:19:48 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS Z 7015-2-ENGL 1797 H 4733b08 05b8477 570 9 2 9015-2 : 1999 Foreword This translation has been made based on the original Japanese Industrial Standard established by the Minister of Int
4、ernational Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. To conform with the International Standard IS0 2859-3 : 1985 has been basically employed. JI$ Z 9015 : 1999 consists of the following parts under
5、the title “Sampling procedures for inspection by attributes”. Part O : IntroductionOto the JIS Z 9015 attribute sampling system Part 1 : Sampling plans indexed by acceptable quality level (AQL) for Part 2 : Sampling plans indexed by limiting quality (LQ) for isolated Part 3 : Skip-lot sampling proce
6、dures lot-by-lot inspection lot inspection Date of Establishment: 1999-05-20 Date of Public Notice in Official Gazette: 1999-05-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Basic Items JIS Z 9015-2: 1999, First English edition published i n 2000-12 Translated and
7、 published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduc
8、ed or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing,
9、Bernie Not for Resale, 03/14/2007 02:19:48 MDTNo reproduction or networking permitted without license from IHS -,-,- Contents Page Introduction . . 1 1.1 1.2 2 3 3.1 3.2 3.3 3.4 3.5 4 4.1 4.2 4.3 4.4 5 6 6.1 6.2 7 7.1 7.2 7.3 Scope and field of application . Scope Field of application . Definitions
10、Choice of sampling plan . Specifying a sampling plan Choice of sampling procedure . Procedure A (use Attached Table A) Procedure B (use Attached Tables B) Choice of parameters for the sampling procedures . Rules for acceptance and non-acceptance . Sampling . Acceptance Nonconforming units . Non-acce
11、ptance and resubmission Double and multiple sampling plans . Examples illustrating how to use this part of JIS Z 9015 Example of procedure A . Example of procedure B . Compatibility with JIS Z 9015-1 General Procedure A (see Attached Table A) Procedure B (see Attached Tables B) Attached Tables 1 1 1
12、 2 3 3 3 3 4 4 4 5 5 5 6 6 6 6 6 7 7 7 7 7 8 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 02:19:48 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS Z 701
13、5-2-ENGL 1777 i733b08 05b81i77 3b3 JAPANESE INDUSTRIAL STANDARD JIS Z 9015-2 : 1999 Sampling procedures for inspection by attributes Part 2 : Sampling plans indexed by limiting quality (LQ) for isolated lot inspection Introduction This Japanese Industrial Standard has been prepared based on IS0 2859
14、-2 Sampling procedures for inspection by attributes Part 2 : Sampling plans in- dexed by limiting quality (LQ) for isolated lot inspection issued in 1985 as the first edition without changing the technical contents. The “Informative references” underlined with dots in this Standard show the matters
15、not specified in the original International Standard. JIS Z 9015-1 specifies the sampling inspection plans indexed by AQL. These sampling inspection plans are widely used in various cases. They are designed originally for lot-by-lot inspection and the switching rules are applied. This rule can give
16、(by switching to tightened inspection and, moreover, interrupting the inspection) a pro- tection to the consumer on one hand, and give an incentive for quality improvement to the producers on the other hand. There are, however, many cases where the switching rules in JIS Z 9015-1 are unapplicable. A
17、 lot in an isolated state is a typical case. This Standard is designed to be complementary for JIS Z 9015-1 in a case like this. The sampling plans in this Standard are indexed by limiting quality (LQ) but not indexed directly by AQL. This is a big difference from the special procedure for lim- itin
18、g quality protection by JIS Z 9015-1. This Standard is made on the basis on the principle given below: a) b) C the new LQ plans can be easily integrated with the existing AQL plans in JIS Z 9015-1; the LQ indexing uses a preferred series of values that cannot be confused with the preferred series of
19、 AQL values; the five basic numbers associated with a single sampling plan, i.e. lot size, sample size, acceptance number, AQL (or producers risk quality) and LQ, appear in the same table, whenever possible. Informative reference : ISO/DIS 2859-1.2 : 1997 Sampling procedures for in- spection by attr
20、ibutes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspec- tion is identical with JIS Z 9015-1. 1 Scope and field of application 1.1 Scope This part of JIS Z 9015 establishes LQ sampling plans and procedures for in- spection by attributes compatible with JIS Z 901
21、5-1 that can be used when the switch- ing rules given in JIS Z 9015-1 are not applied, for example, when lots are of an isolated nature. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 02:1
22、9:48 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS Z 7015-2-ENGL 1777 4733b08 05b500 705 W 2 Z 9015-2 : 1999 The plans in this part of JIS Z 9015 are indexed by a preferred series of limiting qualities (LQ) with a consumers risk usually below 10 %, but always belo
23、w 13 %. This method of indexing permits the “ad-hoc” procedure mentioned in sub-clause 1 2 . 6 of JIS Z 9015-1 to be implemented as a standard procedure. Notes 1 The plans in JIS Z 9015-1 are indexed by a preferred series of AQL values and inspection levels. During the inspection of a continuing ser
24、ies of lots the application of switching rules helps to ensure that the process average in that series of lots is kept below the specified AQL. Limiting quality does not have the same direct relationship with the process average (see 3 . 5 . 1 ) . 2 JIS Z 9015-1 sub-clause 1 2 . 6 . 2 , states: “If
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