ASTM D5479-94(2000)
(Practice)Standard Practice for Testing Biofouling Resistance of Marine Coatings Partially Immersed
Standard Practice for Testing Biofouling Resistance of Marine Coatings Partially Immersed
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 inch-pound units are to be regarded as the standard. The values given 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.
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Designation:D5479–94 (Reapproved 2000)
Standard Practice for
Testing Biofouling Resistance of Marine Coatings Partially
Immersed
This standard is issued under the fixed designation D 5479; 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 3.1.3 film(s)—each layer or coat of paint as applied to the
substrate or on top of another applied coat.
1.1 This practice covers a procedure to test a biofouling
3.1.4 system—cumulative total number of coating films,
resistant coating systems or antifouling systems, or both, when
which includes application of a primary film(s) for the purpose
subjected to in-situ partial immersion exposure. This enhances
of protecting the substrate from possible deterioration, or
settlementofcertainmarinefoulingorganismsandincreasethe
enhancing the adhesion of the biofouling resistant coating or
rate of possible physical deterioration.
antifouling coating to the primary film(s), or both.
1.2 The values stated in inch-pound units are to be regarded
3.2 Biofouling resistant coatings and antifouling coatings
as the standard. The values given in parentheses are for
are interrelated; thus they are used in this practice interchange-
information only.
ably.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Significance and Use
responsibility of the user of this standard to establish appro-
4.1 This test method is designed as a screening test to
priate safety and health practices and determine the applica-
evaluate the performance of applied coating systems and other
bility of regulatory limitations prior to use.
materials designed to resist biofouling settlement.
2. Referenced Documents 4.2 The degree and type of fouling will vary depending on
the environment. Differences in geographic location of test
2.1 ASTM Standards:
sites, time of year when panels are exposed, and weather
D 3623 Method of Testing Antifouling Panels in Shallow
conditions from one year to the next, can affect results. Such
Submergence
variables are accounted taking a fouling census on a nontoxic
D 4938 Test Method for Erosion Testing of Antifouling
surface. For the exposure to be valid, the nontoxic surface
Paints Using High Velocity Water
should show heavy fouling accretion.
D 4939 Test Method for Subjecting Marine Antifouling
Coating to Biofouling and Fluid Shear Forces in Natural
5. Apparatus
Seawater
5.1 Floating Raft—The test panels shall be mounted on a
D 5108 Test Method for Organotin Release Rates of Anti-
2 floating raft to maintain the correct position in the water.
fouling Coating Systems in Sea Water
5.1.1 The floating raft shall be constructed with a minimal
3. Terminology amount of decking to maximize sunlight exposure on the test
panel’s surfaces.
3.1 Definitions:
5.2 Exposure Rack—Each rack will provide firm vertical
3.1.1 antifouling coatings—polymeric applied films engi-
installation of several (4 to 8) test panels that must be
neered to prevent marine fouling settlement due to inclusion of
positioned in such a manner that the prevailing tidal currents
antifouling compounds within its formulated matrix.
will move parallel to the panels’ surfaces.
3.1.2 biofouling-resistant coatings—polymeric applied
5.2.1 The method of rack installation must provide a means
films, engineered to prevent secured or permanent attachment
of easy but dependable height adjustment. The movement of
of marine fouling organisms due to certain surface character-
the lower (immersed) end of each rack is limited to 20° from
istics.
the vertical.
5.2.2 Test panel racks should be constructed of plastic
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
materials, or insulators must be utilized to prevent test panels
Related Coatings, Materials, and Applications and is the direct responsibility of
from metallic contact.
Subcommittee D01.45 on Marine Solvents.
Current edition approved Mar. 15, 1994. Published May 1994.
Annual Book of ASTM Standards, V
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