mil_std_1916(零缺陷抽样计划(pdf 33页)英文

   DEPARTMENT OF DEFENSE TEST METHOD STANDARD

一、 SCOPE .................. 1
   1.1 Scope................... 1
   1.2 Applicability ........ 1
   1.3 Applications......... 1
   1.4 Product requirements....................... 1
   1.5 Limitations........... 2
二、 APPLICABLE DOCUMENTS........... 3
   2.1 General................ 3
   2.2 Non-Government publications.......... 3
   2.3 Order of precedence......................... 4
三、 DEFINITIONS....... 5
   3.1 Acronyms used in this standard........ 5
   3.2 Acceptance.......... 5
   3.3 Contract quality requirements........... 5
   3.4 Critical characteristic........................ 5
   3.5 Critical nonconforming unit.............. 5
   3.6 Government contract quality assurance ........ 6
   3.7 Inspection............ 6
   3.8 Major characteristic.......................... 6
   3.9 Major nonconforming unit................ 6
   3.10 Minor characteristic......................... 6
   3.11 Minor nonconforming unit ................ 6
   3.12 Nonconformance.. 6
   3.13 Nonconforming unit......................... 6
   3.14 Production interval........................... 6
   3.15 Quality................. 6
   3.16 Quality assurance. 6
   3.17 Quality audit........ 6
   3.18 Quality program... 6
   3.19 Screening inspection......................... 7
   3.20 Traceability.......... 7
   3.21 Verification level (VL)..................... 7
四、 GENERAL REQUIREMENTS.......... 8
   4.1 Acceptance by contractor-proposed provision.s....................... 8
   4.1.1 General................ 8
   4.1.2 Requirements and procedures........... 8
   4.1.3 Submission and incorporation........... 9
   4.1.3.1 Submission........... 9
   4.1.3.2 Incorporation....... 9
   4.1.4 Withdrawal of approval of alternates 9
   4.2 Acceptance by tables........................ 9
   4.2.1 Preferred sampling plans ................... 9
   4.2.2 Formation and identification of lots or batche..s....................... 9
   4.2.3 Determination of sampling plan........ 10
   4.2.4 Sampling of lots or batches............... 10
   4.2.4.1 Selection of units.. 10
   4.2.4.2 Representative (stratified) sampling.. 10
   4.2.4.3 Process of sampling.......................... 10
   4.2.4.4 Non-conforming product.................. 10
   4.3 Disposition of nonconforming product........ 11
   4.4 Critical characteristics...................... 11
   4.5 Special reservations for critical nonconforman.c.e.................... 11
五、 DETAILED REQUIREMENTS......... 12
   5.1 Acceptance by contractor proposed-provisions.. ..................... 12
   5.1.1 Quality system plan.......................... 12
   5.1.2 Prevention-based quality system....... 12
   5.1.3 Process focus of quality system........ 12
   5.1.4 Objective evidence of quality system implementation and effectiven.e..s.s............ 13
   5.1.4.1 Examples of evidence regarding process improveme.n..t.......... 13
   5.1.4.2 Examples of evidence regarding process contro..l.................... 13
   5.1.4.3 Examples of evidence regarding product conforman.c.e........... 14
   5.2 Acceptance by tables........................ 14
   5.2.1 Sampling inspection......................... 14
   5.2.1.1 Verification level specification .......... 14
   5.2.1.2 Sampling procedures........................ 15
   5.2.1.3 Switching procedures....................... 15
   5.2.1.3.1 Normal to tightened......................... 15
   5.2.1.3.2 Tightened to normal......................... 16
   5.2.1.3.3 Normal to reduced........................... 16
   5.2.1.3.4 Reduced to normal........................... 16
   5.2.1.4 Discontinuation of acceptance.......... 16
   5.2.2 Preferred sampling inspection tables . 17
   5.2.2.1 Attributes sampling plans for lot or batch inspectio..n.............. 17
   5.2.2.1.1 Acceptability criterion...................... 17
   5.2.2.2 Variables sampling plans for lot or batch inspection................. 17
   5.2.2.2.1 Limitations on use 17
   5.2.2.2.2 Nonconforming unit......................... 18
   5.2.2.2.3 Acceptability criteria........................ 18
   5.2.2.3 Continuous attributes sampling inspection plan..s.................... 20
   5.2.2.3.1 Conditions for continuous sampling procedure..s..................... 20
   5.2.2.3.2 Continuous sampling inspection procedure .. 21
   5.2.2.3.3 Acceptability criterion...................... 21
   5.2.2.3.3.1 Special reservation for criticanl onconforming unit.................. 21
六、 NOTES................... 22
   6.1 Intended use......... 22
   6.2 Issue of DoDISS.. 22
   6.3 Supersession data. 22
   6.4 Subject term (keyword listing) .......... 22
TABLE
   I Code letters (CL) for entry into the sampling table..s............... 15
   II Attributes sampling plans................. 17
   III Variables sampling plans.................. 19
   IV Continuous sampling plans............... 20
   APPENDIX Examples of sampling plan use......... 23
FIGURE
   1 Attributes sampling inspection log.... 24
   2 Computations for single specification limit cas..e..................... 25
   3 Computations for double specification limit ca.s.e.................... 26
   4 Continuous sampling inspection log.. 27
   5 Procedure to determine a valid f....... 28
   CONCLUDING MATERIAL............. 29

..............................