1、NACE Standard TM0304-2004 Item No. 21245 Stan da rd Test Method Offshore Platform Atmospheric and Splash Zone Maintenance Coating System Evaluation This NACE International standard represents a consensus of those individual members who have reviewed this document, its scope, and provisions. Its acce
2、ptance does not in any respect preclude anyone, whether he or she has adopted the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not in conformance with this standard. Nothing contained in this NACE International standard is to be construed as
3、 granting any right, by implication or otherwise, to manufacture, sell, or use in connection with any method, apparatus, or product covered by Letters Patent, or as indemnifying or protecting anyone against liability for infringement of Letters Patent. This standard represents minimum requirements a
4、nd should in no way be interpreted as a restriction on the use of better procedures or materials. Neither is this standard intended to apply in all cases relating to the subject. Unpredictable circumstances may negate the usefulness of this standard in specific instances. NACE International assumes
5、no responsibility for the interpretation or use of this standard by other parties and accepts responsibility for only those official NACE International interpretations issued by NACE International in accordance with its governing procedures and policies which preclude the issuance of interpretations
6、 by individual volunteers. Users of this NACE International standard are responsible for reviewing appropriate health, safety, environmental, and regulatory documents and for determining their applicability in relation to this standard prior to its use. This NACE International standard may not neces
7、sarily address all potential health and safety problems or environmental hazards associated with the use of materials, equipment, and/or operations detailed or referred to within this standard. Users of this NACE International standard are also responsible for establishing appropriate health, safety
8、, and environmental protection practices, in consultation with appropriate regulatory authorities if necessary, to achieve compliance with any existing applicable regulatory requirements prior to the use of this standard. CAUTIONARY NOTICE: NACE International standards are subject to periodic review
9、, and may be revised or withdrawn at any time. NACE International requires that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of initial publication. The user is cautioned to obtain the latest edition. Purchasers of NACE International standards
10、 may receive current information on all standards and other NACE International publications by contacting the NACE International Membership Services Department, 1440 South Creek Drive, Houston, Texas 77084-4906 (telephone +I 281 228-6200). Approved 2004-12-03 NACE International 1440 South Creek Driv
11、e Houston, Texas 77084-4906 +I (281) 228-6200 ISBN 1-5790-1 94-3 02004, NACE International TM0304-2004 Foreword The purpose of this NACE standard is to specify the laboratory test methods to evaluate the performance of liquid-applied maintenance coating systems for the atmospheric zone and splash zo
12、ne of an offshore platform. It is intended for use by facility owners and coating manufacturers. This standard was prepared by NACE Task Group (TG) 260 on Offshore Platorm Maintenance Coatings (Nonimmersion): Standard Test Methods. This TG is administered by Specific Technology Group (STG) 02 on Coa
13、tings and Linings, Protective: Atmospheric. It is also sponsored by STG 33 on Oil and Gas Production-Nonmetallics and Wear Coatings (Metallic). This standard is issued by NACE International under the auspices of STG 02. In NACE standards, the terms shall, must, should, and may are used in accordance
14、 with the definitions of these terms in the NACE Publications Style Manual, 4th ed., Paragraph 7.4.1.9. Shall and must are used to state mandatory requirements. The term should is used to state something good and is recommended but is not mandatory. The term may is used to state something considered
15、 optional. NACE International I TM0304-2004 1. 2. 3 4. 5. 6. 7. 8. 9. NACE International Stand a rd Test Method Offshore Platform Atmospheric and Splash Zone Maintenance Coating System Evaluation Contents General . 1 Definitions . 1 Coating Materials 1 Test Solution . 2 Test Specimens 3 4 Coating Ap
16、plication Rust Creepage Resist 5 Edge-Retention Test 5 Thermal-Cycling Resistance Test. 6 1 O. Seawater Immersion Resistance Test 11. Cathodic Disbondment Test 12. Flexibility Test 13. Impact Resistance Test References . . Figure 1 : 90“ Angle Aluminum dge-Retention Test. . Figure 2: Cross-Section o
17、f C-Channel Steel Block for Thermal-Cycling Test Table 1 : Fingerprinting of Coating Materials . Table 2: Test Specimen Geometry, Size, Substrate Material, and Minimum Quantity 4 ii NACE International TM0304-2004 Section 1: General 1 .I This standard test method covers liquid-applied 1.2 Five test m
18、ethods-rust creepage resistance, edge maintenance coating systems for the atmospheric zone and retention, thermal-cycling resistance, flexibility, and impact splash zone of an offshore platorm. These coating strength-are used to evaluate coating systems for systems are applied by conventional air, a
19、irless, or plural- atmospheric service. In addition to these five test methods, component spray. Other types of coating materials, such as seawater immersion resistance and cathodic disbondment thermal spray metallic and elastomeric or petrolatum tape are also used to evaluate splash zone coating sy
20、stems. splash zone coatings, are not covered in this standard. The types of offshore platorms covered by this standard include fixed-leg, semi-submersible, tension-leg, floating production storage and offloading (FPSO), etc. Section 2: Definitions Atmospheric Zone: The area on an offshore structure
21、that is above the splash zone. Coating System: The complete number and types of coats applied to a substrate in a predetermined order. Cracking (of Coating): Breaks in a coating that extend through to the substrate. Delamination: The separation of a coat or coats from the previous coat or from the s
22、ubstrate. equipment is used to apply coatings with a pot life that is too short to permit mixing and application by conventional air and airless spray equipment. Pot Life: The elapsed time within which a coating can be effectively applied after all components of the coating have been thoroughly mixe
23、d. Recoat Window: The duration required for a coating to dry or cure before a subsequent coat can be applied successfully. Disbondment: The loss of adhesion between a coating Room Temperature: An indoor temperature generally and the substrate. between 20 and 25C (68 and 77F). Edge Retention: The rat
24、io of dry-film thickness (DFT) of the entire multicoat coating system at peak to average DFT on both flat sutfaces on a sharp angle bar, used as a measure of a coatings ability to retain its film coverage over sharp corners. Fingerprinting: Method of identifying a coating material through laboratory
25、 analyses of coating density, solids content, pigment content, etc. Infrared (IR) spectroscopy is often used in the analyses. Rust Creepage (Undercutting): The penetration of a coating and the spread of delamination or corrosion from a scribe or holiday in the film. Shelf Life: The amount of time a
26、coating or other material remains in usable condition. Splash Zone: The area on an offshore structure that is alternatively dry and wet because of the influence of tides, winds, and waves. Plural-Component Spraying: An application method that Synthetic Seawater: An aqueous solution containing automa
27、tically proportions and mixes two or more inorganic salts in proportions and concentrations components of a coating material in the process of representative of ocean water (also known as “substitute delivering them to the spray gun. Plural-component spray ocean water”). Section 3: Coating Materials
28、 3.1 General formulation is changed after the qualification, the coating system shall be requalified in accordance with the latest The selection of the coating system may depend on the revision of this standard. weather (ambient temperature, humidity) and recoat window, in addition to the coating pe
29、tformance. The 3.2 Required Product Information coating system petformance shall pass the acceptance criteria specified by each facility owner. If the coating NACE International 1 TM0304-2004 When each coating system is submitted to qualification (2) Material safety data sheet (MSDS) testing the coa
30、ting manufacturer shall provide the following information as part of the test report. (1) Product data sheet (3) Fingerprinting-The requirements for fingerprinting for each coat of the multicoat coating system are listed in Table 1. Table 1 : Fingerprinting of Coating Materials # Property Component
31、Standard 1 Density Part A and B, each ASTMA D 1475 component 2 Solid content by weight 3 Pigment content by weight Mixed Parts A and B Part A and B, each component ASTM D 2369 ASTM D 23723 4A Fourier transform infrared-attenuated total reflection Part A and B, each Equipment instruction (FTIR-ATR) s
32、can with pigment, or component manufacturers 4B Infrared (IR) scan without pigment Part A and B, each ASTM D 26214 component ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. If the fingerprinting test is conducted by the manufacturer, the test results shall be certified by the
33、 manufacturers quality assurance/quality control manager or the senior technical manager. (4) All of the following information: Manufacturers name Address Telephone/fax numbers Sutface preparation standard (NACE, SSPC,” ISO, etc.) Anchor profile (pm mil) For each of the primer, midcoat, and topcoat,
34、 the following information shall also be provided: Product name Color Material type Batch numbers, Parts A and B Manufacturing date Shelf life Volatile organic compounds (VOCs), (g/L or Ib/gal) Cleaning solvent Thinner type Maximum percentage of thinner content by volume Mixing ratio by volume or we
35、ight Application method Application temperature range (“C or OF) Application humidity range (% R.H.) Pot life (hourstem peratu re) Induction time (minutes) Minimum recoat and dry-to-touch time (hou rstem peratu re) Maximum recoat time (daystemperature) Percentage of solids content by volume Wet-film
36、 thickness (WFT) range (pm or mil) Dry-film thickness (DFT) range (pm or mil) Section 4: Test Solution Synthetic seawater used in several of the test methods in this standard shall be prepared with the sea salt chemical composition in accordance with ASTM D 1141.5 The minute concentration of heavy m
37、etals is not required to prepare the synthetic seawater. Commercial-grade sea salts may be used instead of reagent-grade sea salts to prepare the synthetic seawater. (I SSPC: The Society for Protective Coatings, 40 24th Street 6th Floor, Pittsburgh PA 15222-4656. International Organization for Stand
38、ardization (ISO), 1 rue de Varernb, Case postale 56, CH-I21 1 Geneva 20, Switzerland. 2 NACE International TM0304-2004 Section 5: Test Specimens 5.1 Test Specimen Geometry Size, Substrate Material, and Quantity 5.1.1 Table 2 lists the specified test specimen geometry, size, substrate material, and t
39、he minimum quantity of test specimens for each surface preparation and test method. Extra coated test specimens should be prepared in case a repeat test is needed later. 5.1.2 A welding rod 3.18 mm (0.125 in.) in diameter and 76 mm (3.0 in.) in length should be welded to the center of one of the 76-
40、mm (3.0-in.) sides of each steel panel to suspend the panel in the air so that the entire panel can be coated at one time. Other techniques to spray all sides of a panel may also be used. 5.2 Surface Preparation Test specimens with three different surface preparations shall be used for the rust cree
41、page resistance, cathodic disbondment, and seawater immersion resistance tests: 5.2.1 NACE No. 2/SSPC-S IO7 or IS0 8501-1 Sa 2.5 near-white metal finish 5.2.2 Damp surface: Immediately prior to the application of the prime coat. The NACE No. 2 SSPC- SP 10 or IS0 8501-1 Sa 2.5 near-white metal finish
42、 steel panels shall be dipped into tap water and then stripped with a wet and wrung cloth. No water droplets shall be visually evident on the steel panel surfaces. 5.2.3 200 mg/m CI- surface preparation procedure: The procedure to prepare 200 mg/m CI- for a 76 x 150-mm (3.0 x 6.0-in.) test specimen
43、shall be as fo I lows: 5.2.3.1 The surface area of each side of a 76 x 150-mm (3.0 x 6.0-in.) steel panel is 11,600 mm (1 8.0 in). 5.2.3.2 2,320 pg of CI ion is required to make a 200 mg/m CI concentration. 5.2.3.3 0.5 mL of salt solution of 4.64 g/L CI ion concentration shall be used to cover each
44、side of the steel test panel. To make a 1.0-L salt solution, 4.64 g of CI ion is required; therefore 7.64 g of sodium chloride (NaCI) is required. 5.2.4 NaCI shall be placed in a 93 to 121C (200 to 250F) oven for at least 2 hours to remove any moisture. 5.3 Anchor Profile Anchor profile on all steel
45、 panels shall be as specified by the coating manufacturer. If not specified, the anchor profile shall be 40 to 75 pm (1.5 to 3.0 mil) as measured with a replica tape in accordance with NACE Standard RP0287. 5.4 If abrasive blasting is not possible because of a particular field condition, the steel p
46、anels shall be prepared in the same manner as they would be in the field. All the test methods shall still be applicable. NACE International 3 TM0304-2004 Table 2: Test Specimen Geometry, Size, Substrate Material, and Minimum Quantity Test Method Test Specimen Geometry, Size, and Substrate Surface M
47、inimum Material Preparation Quantity Rust Creepage Resistance Edge Retention Thermal Cycling Resistance Seawater Immersion Resistance (for splash zone only) Cathodic Disbondment (for splash zone only) Flexibility Impact Strength 76 x 150 x4.75-mm (3.0 x 6.0 x 0.188-in.) ASTM A NACE No. 2/SSPC- SP 10
48、 or IS0 8501- 1 Sa 2.5 4 366 steel 200 mg/m2 CI- 4 Damp (for splash 4 zone only) 90“ angle aluminum bar, 150 mm (6.0 in.) long, 19 C-Channel carbon steel, 50 mm (2 in.) wide, 76 mm #80 grit sandpaper 3 3 x 19 x 3.18 mm (0.75 x 0.75 x 0.125 in.) (3.0 in.) long, 3.18 mm (0.125 in.) thick NACE No. 2/SS
49、PC- SP 10 or IS0 8501- 1 Sa 2.5 NACE No. 2/SSPC SP 10 or IS0 8501- 1 Sa 2.5 76 x 150 x 4.75-mm (3.0 x 6.0 x 0.188-in) ASTM A 2 36 steel Damp 2 200 mg/m2 CI- 76 x 150 x4.75-mm (3.0 x 6.0 x 0.188-in.) ASTM A 36 steel NACE NO. 2/SSPC- SP 10 or IS0 8501- 1 Sa 2.5 Damp 200 mg/m2 CI- Carbon steel panel with minimum length of 150 mm (6.0 in.), width of 12.7 to 25.0 mm (0.500 to 1.00 in.), thickness at least 10 times coating system DFT 76 x 150 x4.75-mm (3.0 x 6.0 x 0.188-in.) ASTM A 36 steel NACE NO. 2/SSPC- SP 10 or IS0 8501- 1 Sa 2.5 NACE No. 2/SSPC- Sp 10 or
