2. Referenced Documents2.1 ASTM Standards: 3D2651 Guide for Preparation of Metal Surfaces for Adhe-sive BondingD3933 Guide for Preparation of Aluminum Surfaces forStructural Adhesives Bonding (Phosphoric Acid Anodiz-ing)D3980 Practice for Interlaboratory Testing of Paint andRelated Materials 4D7234 Test Method for Pull-Off Adhesion Strength ofCoatings on Concrete Using Portable Pull-Off AdhesionTestersE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 ANSI Standard:N512 Protective Coatings (Paints) for the Nuclear Industry 52.3 ISO Standard:ISO 4624 Paints and Varnish—Pull-Off Test for Adhesion 5