Standard Practice for Field Sampling of Coating Films for Analysis for Heavy Metals

SCOPE
1.1 This practice covers a method to control the removal of samples of coating films from substrates for subsequent laboratory analysis for heavy metal content on a mass basis. This technique can be used in the field, the fabricating shop, or laboratory.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.3 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. For specific hazard information, see Section 5, Note 1 and Note 3.

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Publication Date
09-Jan-2002
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ASTM D5702-02 - Standard Practice for Field Sampling of Coating Films for Analysis for Heavy Metals
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D5702–02
Standard Practice for
Field Sampling of Coating Films for Analysis for Heavy
1
Metals
This standard is issued under the fixed designation D 5702; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope The number and location of samples to be removed must also
be determined to characterize properly the extent of the
1.1 This practice covers a method to control the removal of
presence of hazardous materials, if any, on a structure.
samples of coating films from substrates for subsequent labo-
ratory analysis for heavy metal content on a mass basis. This
4. Materials and Equipment
technique can be used in the field, the fabricating shop, or
4.1 Sample Collection Container—A clean plastic bag or
laboratory.
rigid container comprised of a material such as polyethylene
1.2 The values stated in SI units are to be regarded as the
that will not contaminate the sample.
standard. The values in parentheses are for information only.
4.2 Straight Edge or Ruler.
1.3 This standard does not purport to address all of the
4.3 Knife or Chisel, cleaned and sharpened, for removing
safety concerns, if any, associated with its use. It is the
paint samples.
responsibility of the user of this standard to establish appro-
4.4 Dry Film Thickness Gage, for measuring total coating
priate safety and health practices and determine the applica-
thickness.
bility of regulatory limitations prior to use. For specific hazard
information, see Section 5, Note 1 and Note 3.
5. Procedure
2. Referenced Documents 5.1 Select a sufficient number of areas for coating removal
that properly characterize the coatings on the structure.
2.1 ASTM Standards:
5.1.1 Selection may be based on painting history, knowl-
D 1186 Test Methods for Nondestructive Measurement of
edge of previously applied coatings, prior touch-up and re-
Dry Film Thickness of Nonmagnetic Coatings Applied to
2 painting programs, and other such factors.
a Ferrous Base
5.1.2 Select areas that properly characterize the range of
D 1400 Test Method for Nondestructive Measurement of
thickness found. Dry film thickness can be measured in
DryFilmThicknessofNonconductiveCoatingsAppliedto
2 accordance with Test Methods D 1186, D 1400, or D 4138.
a Nonferrous Metal Base
5.1.3 Remove a minimum of three samples.
D 4138 Test Methods for Measurement of Dry Film Thick-
3 5.2 At each sample site, clean the surface of dirt, dust, or
ness of Protective Coating Systems by Destructive Means
debris.
3. Significance and Use
NOTE 1—Hazardous materials can be present in surface debris and
3.1 Prior to beginning a project that involves the removal, chalk which may be removed during cleaning. Thus, consideration should
be given to collecting this surface debris and chalk for analysis.
cutting, grinding, or burning of paint, it is necessary to
determine if the coating contains hazardous materials, such as
5.3 At each sample site, use a knife and straight edge to
lead, as certain requirements for worker and environmental
scribe the perimeter of a square through the coating film to the
protection may need to be imposed. The presence and quantity
substrate. The square should be of sufficient size to give a one
of hazardous materials in a paint can be determined through
gram sample.
laboratory analysis; however, since the analysis is based on the
3
NOTE 2—Paint with a density of 1.5 g/cm and 250 microns (10 mils)
weight of the specimen, the removal of the sample must be
thick will generate one gram of sample in a square that is 5 cm (2 in.) on
properly controlled to improve the reliability of the test results.
a side assuming 100 percent of the material is collected. Paint density
3
normally ranges from 1.1 to 2.5 g/cm . Adjust the sample size based on
density, thickness and collection efficiency.
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
Related Coatings, Materials, and Applications and is the direct responsibility of 5.4 Remove essentially all of the coating within the square
Subcommittee D01.46 on Industrial Protective Coatings.
down to the substrate by scraping, by making closely-spaced
Current edition approved Jan. 10, 2002. Published March 2002. Originally
parallel scribes to disbond ribbons of the coating, or other
published as D 5702 – 95. Last previous edition D 5702 – 95.
2
controlled means that permit collection of all of the film
Annual Book of ASTM Standards, Vol 06.01.
3
Annual Book of ASTM Standards, Vol 06.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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