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Description of ASTM-D6990 2011ASTM D6990 - 05(2011)Standard Practice for Evaluating Biofouling Resistance and Physical Performance of Marine Coating SystemsActive Standard ASTM D6990 | Developed by Subcommittee: D01.45 Book of Standards Volume: 06.02 ASTM D6990Significance and Use This practice is designed to provide guidance to a panel inspector for quantitative and consistent evaluation of coating performance from test panels coated with marine antifouling coating systems. The practice assesses performance of coating systems based on both antifouling and physical properties. The user is cautioned that the results are representative for the specific region and time of year in which the specimens are immersed. It shall be noted that interpretation of results will depend on the geographical location where the test is conducted, whether the coated specimens are exposed either totally or partially immersed, under static or dynamic conditions, and position and orientation. Simultaneous testing of a proven standard antifouling coating system (known to minimize fouling accumulation, for example, containing biocide or active agent(s) to prevent fouling settlement/growth) in the specific marine environment shall be included as a reference to assist in interpretation of results. In addition, a negative control (inert surface susceptible to heavy fouling) shall be included on a regular basis. For the exposure to be valid, the surface of the negative control should show heavy fouling relative to the standard system(s). Marine coating systems that produce positive results relevant to the standard system(s) show potential for use in protecting underwater marine structures. The format can be utilized independent of exposure protocol and coating type, and provides the end user with a consistent practice and format for reporting of performance rating. 1. Scope 1.1 This practice establishes a practice for evaluating degree of biofouling settlement on and physical performance of marine coating systems when panels coated with such coating systems are subjected to immersion conditions in a marine environment. Guidance for preparation or exposure and handling of test specimens can be found in related ASTM standards as noted below (see Section 2). 1.2 This practice and related exposure methodologies are designed as tools for the relative assessment of coating performance, and in no way are to be used as an absolute indicator of long-term performance under all conditions and in all environments. There can be high variability among and within exposure sites with respect to water quality and population or species of fouling organisms, and coating performance may vary with these and other properties. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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. A specific hazard statement is given in Section 6.
ASTM Standards D3623 Test Method for Testing Antifouling Panels in Shallow Submergence D4938 Test Method for Erosion Testing of Antifouling Paints Using High Velocity Water D4939 Test Method for Subjecting Marine Antifouling Coating to Biofouling and Fluid Shear Forces in Natural Seawater D5479 Practice for Testing Biofouling Resistance of Marine Coatings Partially Immersed D5618 Test Method for Measurement of Barnacle Adhesion Strength in Shear G141 Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials Keywords antifouling coating; antifouling performance; biofouling; coating physical performance; fouling rate; physical performance; evaluation; film physical performance; Antifouling performance; Biofouling organisms; Biofouling-resistant coatings; Marine coatings systems/applications; Performance--marine (shipboard) materials/applications; ICS Code ICS Number Code 87.040 (Paints and varnishes) DOI: 10.1520/D6990-05R11 ASTM International is a member of CrossRef. ASTM D6990This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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