Standard Practice for Testing Biofouling Resistance of Marine Coatings Partially Immersed

SIGNIFICANCE AND USE
This test method is designed as a screening test to evaluate the performance of applied coating systems and other materials designed to resist biofouling settlement.
The degree and type of fouling will vary depending on the environment. Differences in geographic location of test sites, time of year when panels are exposed, and weather conditions from one year to the next, can affect results. Such variables are accounted taking a fouling census on a nontoxic surface. For the exposure to be valid, the nontoxic surface should show heavy fouling accretion.
SCOPE
1.1 This practice covers a procedure to test a biofouling resistant coating systems or antifouling systems, or both, when subjected to in situ partial immersion exposure. This enhances settlement of certain marine fouling organisms and increase the rate of possible physical deterioration.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

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Historical
Publication Date
31-May-2007
Current Stage
Ref Project

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ASTM D5479-94(2007) - Standard Practice for Testing Biofouling Resistance of Marine Coatings Partially Immersed
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5479 − 94 (Reapproved2007)
Standard Practice for
Testing Biofouling Resistance of Marine Coatings Partially
Immersed
This standard is issued under the fixed designation D5479; 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 3.1.2 biofouling-resistant coatings, n— polymeric applied
films, engineered to prevent secured or permanent attachment
1.1 This practice covers a procedure to test a biofouling
of marine fouling organisms due to certain surface character-
resistant coating systems or antifouling systems, or both, when
istics.
subjected to in situ partial immersion exposure. This enhances
3.1.3 film(s), n—each layer or coat of paint as applied to the
settlementofcertainmarinefoulingorganismsandincreasethe
substrate or on top of another applied coat.
rate of possible physical deterioration.
3.1.4 system, n—cumulative total number of coating films,
1.2 The values stated in SI units are to be regarded as the
which includes application of a primary film(s) for the purpose
standard. The values given in parentheses are for information
of protecting the substrate from possible deterioration, or
only.
enhancing the adhesion of the biofouling resistant coating or
1.3 This standard does not purport to address all of the
antifouling coating to the primary film(s), or both.
safety concerns, if any, associated with its use. It is the
3.2 Biofouling resistant coatings and antifouling coatings
responsibility of the user of this standard to establish appro-
are interrelated; thus they are used in this practice interchange-
priate safety and health practices and determine the applica-
ably.
bility of regulatory limitations prior to use.
4. Significance and Use
2. Referenced Documents
2.1 ASTM Standards: 4.1 This test method is designed as a screening test to
evaluate the performance of applied coating systems and other
D3623 Test Method for Testing Antifouling Panels in Shal-
low Submergence materials designed to resist biofouling settlement.
D4938 Test Method for Erosion Testing of Antifouling
4.2 The degree and type of fouling will vary depending on
Paints Using High Velocity Water
the environment. Differences in geographic location of test
D4939 TestMethodforSubjectingMarineAntifoulingCoat-
sites, time of year when panels are exposed, and weather
ing to Biofouling and Fluid Shear Forces in Natural
conditions from one year to the next, can affect results. Such
Seawater
variables are accounted taking a fouling census on a nontoxic
D5108 Test Method for Organotin Release Rates of Anti-
surface. For the exposure to be valid, the nontoxic surface
fouling Coating Systems in Sea Water
should show heavy fouling accretion.
3. Terminology
5. Apparatus
3.1 Definitions:
5.1 Floating Raft—The test panels shall be mounted on a
3.1.1 antifouling coatings, n—polymeric applied films en-
floating raft to maintain the correct position in the water.
gineered to prevent marine fouling settlement due to inclusion
5.1.1 The floating raft shall be constructed with a minimal
of antifouling compounds within its formulated matrix.
amount of decking to maximize sunlight exposure on the test
panel’s surfaces.
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
5.2 Exposure Rack—Each rack will provide firm vertical
Related Coatings, Materials, and Applications and is the direct responsibility of
installation of several (4 to 8) test panels that must be
Subcommittee D01.45 on Marine Coatings.
positioned in such a manner that the prevailing tidal currents
Current edition approved June 1, 2007. Published August 2007. Originally
will move parallel to the panels’ surfaces.
approved in 1994. Last previous edition approved in 2000 as D5479 - 94 (2000).
DOI: 10.1520/D5479-94R07.
5.2.1 The method of rack installation must provide a means
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
of easy but dependable height adjustment. The movement of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the lower (immersed) end of each rack is limited to 20° from
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the vertical.
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