ASTM D3636-13a
(Practice)Standard Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials
Standard Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials
ABSTRACT
This practice covers procedures for obtaining data on the quality of solid electrical insulating materials and for judging whether the materials meet the requirements specified. This practice, however, is not intended to define internal quality control procedures of the producer; rather, it is designed to determine the acceptability of all, or some portion, of a quantity of electrical insulating materials available for inspection by the user of the material. In addition, this practice is intended for use in conjunction with existing material specifications including property characteristic limits, acceptable quality level, standard test methods, and sampling instructions. Data shall be obtained by taking lot samples randomly. Sampling plans are available in single, double, and multiple types. Acceptable quality levels for each critical, major, and minor property as well as inspection levels shall conform to the requirements specified. Acceptance of lot quality shall be determined based on the comparison of test results and other information obtained using the sampling plans with the requirements set forth in the material specification (nonconformity) and on whether the lot meets the requirements specified.
SCOPE
1.1 This practice covers procedures for obtaining data pertaining to the quality of a lot of electrical insulating material and for making a judgement whether the lot meets the requirements of a material specification.
1.2 This practice is not intended to define a producer's internal quality control procedures but is designed to determine the acceptability of all, or some portion, of a quantity of electrical insulating material that is available for inspection by the user of the material.
1.3 This practice is intended to be used in conjunction with an existing material specification that specifies property characteristic limits, acceptable quality level (AQL), standard test methods, and specific sampling instructions.
1.4 In the absence of a specification as described in 1.3, use this practice as a guide, after establishment of agreed-upon property characteristics, limits, AQL, standard test methods, and specific sampling instructions.
1.5 It is intended that this be a practice for inspection by attributes.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation: D3636 − 13a AnAmerican National Standard
Standard Practice for
Sampling and Judging Quality of Solid Electrical Insulating
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Materials
This standard is issued under the fixed designation D3636; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2.2 Military Standard:
MIL-STD-105E Sampling Procedures and Tables for In-
1.1 This practice covers procedures for obtaining data
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spection by Attributes
pertainingtothequalityofalotofelectricalinsulatingmaterial
ANSI/ASQ Z1.4, MIL-STD-1916 Department of Defense
and for making a judgement whether the lot meets the
Preferred Methods for Acceptance of Product
requirements of a material specification.
2.3 Other Document:
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1.2 This practice is not intended to define a producer’s
ANSI/ASQC A2 -1987
internalqualitycontrolproceduresbutisdesignedtodetermine
3. Terminology
the acceptability of all, or some portion, of a quantity of
electrical insulating material that is available for inspection by
3.1 Definitions:
the user of the material.
3.1.1 acceptance number, n—the maximum allowable num-
ber of nonconformities for a given AQL and sample size
1.3 This practice is intended to be used in conjunction with
(lot-sample size).
an existing material specification that specifies property char-
3.1.2 acceptable quality level (AQL), n—the maximum
acteristic limits, acceptable quality level (AQL), standard test
percent nonconforming which, for purposes of sampling
methods, and specific sampling instructions.
inspection, is considered satisfactory as a process average.
1.4 In the absence of a specification as described in 1.3, use
3.1.3 critical property, n—a quantitatively measurable char-
this practice as a guide, after establishment of agreed-upon
acteristic which is absolutely necessary to be met if a material
property characteristics, limits, AQL, standard test methods,
or product is to provide satisfactory performance for the
and specific sampling instructions.
intended use.
1.5 It is intended that this be a practice for inspection by
3.1.3.1 Discussion—In some situations, specification re-
attributes.
quirements coincide with customer usage requirements. In
other situations, they may not coincide, being either more or
1.6 This standard does not purport to address all of the
less stringent. More stringent sampling (for example, smaller
safety concerns, if any, associated with its use. It is the
AQLvalues)isusuallyusedformeasurementofcharacteristics
responsibility of the user of this standard to establish appro-
which are considered critical. The selection of sampling plans
priate safety and health practices and determine the applica-
is independent of whether the term defect or nonconformity is
bility of regulatory limitations prior to use.
appropriate.
3.1.4 defect, n—a departure of a quality characteristic from
2. Referenced Documents
its intended level, or state, that occurs with a severity sufficient
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2.1 ASTM Standards:
tocauseanassociatedproductorservicenottosatisfyintended
E300 Practice for Sampling Industrial Chemicals
normal, or reasonably foreseeable, usage requirements.
3.1.4.1 Discussion—The terms defect and nonconformity
and their derivatives are used somewhat interchangeably in the
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This practice is under the jurisdiction of ASTM Committee D09 on Electrical
historical and current literature. Nonconformity objectively
and Electronic Insulating Materials and is the direct responsibility of Subcommittee
describes the comparison of test results to specification
D09.94 on Editorial.
requirements, while the term defect has a connotation of
Current edition approved March 1, 2013. Published June 2013. Originally
approved in 1977. Last previous edition approved in 2013 as D3636 – 13. DOI:
10.1520/D3636-13a.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.
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Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard
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D3636 − 13a
predicting the failure of a product or service to perform its 3.1.13 percent nonconforming, n—a calculated ratio of non
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