1、NACE Standard TM0404-2004 Item No. 21246 Stan da rd Test Method Offshore Platform Atmospheric and Splash Zone New Construction Coating System Evaluation This NACE International standard represents a consensus of those individual members who have reviewed this document, its scope, and provisions. Its
2、 acceptance 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 constru
3、ed as 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 requireme
4、nts and 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 ass
5、umes 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 interpreta
6、tions 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
7、necessarily 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, s
8、afety, 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 r
9、eview, and may be revised or withdrawn at any time.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 stan
10、dards 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
11、 Drive Houston, Texas 77084-4906 +I (281) 228-6200 ISBN 1-57590-1 95-1 02004, NACE International TM0404-2004 Foreword The purpose of this NACE standard is to specify the laboratory test methods to evaluate the performance of liquid-applied new construction coating systems for the atmospheric zone an
12、d splash zone of an offshore platform. It is intended for use by facility owners and coating manufacturers. This standard was prepared by NACE Task Group (TG) 313 on Standard Test Methods for Offshore Platorm Maintenance Coatings (Nonimmersion). This TG is administered by Specific Technology Group (
13、STG) 02 on Coatings and Linings, Protective: Atmospheric. 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 with the definitions of these terms in the NACE Publications Style Manual, 4th ed., P
14、aragraph 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 optional. NACE International I TM0404-2004 NACE International Stand a rd Test Method
15、Offshore Platform Atmospheric and Splash Zone New Construction Coating System Evaluation Contents . . 3. Coating Materials 4. Test Solutions . 5. Test Specimens 6. Coating Applications . 4 7. Rust Creepage Resistance Test . 4 8. Edge-Retention Test . 4 9. Thermal-Cycling Resistance Test . 5 1 O. Sea
16、water Immersion Resistance Test . . 6 11. Cathodic Disbondment Test . . 7 12. Flexibility Test . 8 13. Impact Resistance Test . . 8 References . . 9 Figure 1 : 90“ Angle Aluminum Bar for Edge-Retenti . 5 Table 1 : Fingerprinting of Coating Materials . 2 Table 2: Test Specimen Geometry, Size, Substra
17、te Material, and Minimum Quantity . 3 . Figure 2: Cross-Section of C-Channel Steel Block II NACE International TM0404-2004 Section 1: General 1 .I This standard test method covers liquid-applied new construction coating systems for the atmospheric zone and splash zone of an offshore platorm. These c
18、oating systems are applied by conventional air, airless, or plural- component spray. Other types of coating materials, such as thermal spray metallic and elastomeric or petrolatum tape splash zone coatings, are not covered in this standard. 1.2 Five test methods-rust creepage resistance, edge retent
19、ion, thermal-cycling resistance, flexibility, and impact strength-are used to evaluate coating systems for atmospheric service. In addition to these five test methods, seawater immersion resistance and cathodic disbondment are also used to evaluate splash zone coating systems. The types of offshore
20、platorms covered by this standard include fixed-leg, semi-submersible, tension-leg, floating production storage and offloading (FPSO), etc. 1.3 The steel surface preparation for all test methods requires grit blasting to near-white metal finish. If a particular type of pre-construction primer (PCP)
21、is required to remain on the grit-blasted surface prior to the application of primer in the field, the PCP shall be applied onto the grit- blasted steel surfaces according to the manufacturers specification. All the test methods shall still be applicable. Section 2: Definitions Atmospheric Zone: The
22、 area on an offshore structure 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
23、the previous coat or from the substrate. Disbondment: The loss of adhesion between a coating and the substrate. Edge Retention: The ratio of dry-film thickness (DFT) of the entire multicoat coating system at peak to average DFT on both flat surfaces on a sharp angle bar, used as a measure of a coati
24、ngs ability to retain its film coverage over sharp corners. Fingerprinting: Method of identifying a coating material through laboratory analyses of coating density, solids content, pigment content, etc. Infrared (IR) spectroscopy is often used in the analyses. Plural-Component Spraying: An applicati
25、on method that automatically proportions and mixes two or more components of a coating material in the process of delivering them to the spray gun. Plural-component spray equipment is used to apply coatings with a pot life that is too short to permit mixing and application by conventional air and ai
26、rless spray equipment. Pot Life: The elapsed time within which a coating can be effectively applied after all components of the coating have been thoroughly mixed. Recoat Window: The duration required for a coating to dry or cure before a subsequent coat can be applied successfully. Room Temperature
27、: An indoor temperature generally between 20 and 25C (68 and 77F). 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 coating or other material remains in usable condition. Spla
28、sh Zone: The area on an offshore structure that is alternatively dry and wet because of the influence of tides, winds, and waves. Synthetic Seawater: An aqueous solution containing inorganic salts in proportions and concentrations representative of ocean water (also known as “substitute ocean water”
29、). NACE International 1 TM0404-2004 Section 3: Coating Materials 3.1 General When each coating system is submitted to qualification testing the coating manufacturer shall provide the following The selection of the coating system may depend on the information as part of the test report. weather (ambi
30、ent temperature, humidity) and recoat window, in addition to the coating petformance. The (1) Product data sheet coating system petformance shall pass the acceptance criteria specified by each facility owner. If the coating (2) Material safety data sheet (MSDS) formulation is changed after the quali
31、fication, the coating system shall be requalified in accordance with the latest revision of this standard. 3.2 Required Product Information (3) Fingerprinting-The requirements for fingerprinting for each coat of the multicoat coating system are listed in Table 1. Table 1 : Fingerprinting of Coating
32、Materials # Property Component Standard 1 Density Part A and B, each ASTMA D 1475 2 Solid content by weight Mixed Parts A and B ASTM D 2369 3 Pigment content by weight Part A and B, each ASTMD23723 4A Fourier transform infrared-attenuated total reflection Part A and B, each Equipment instruction com
33、ponent component (FTIR-ATR) scan with pigment, or component manufacturers 4B Infrared (IR) scan without pigment Part A and B, each ASTM D26214 AASTM International, 1 O0 Barr Harbor Drive, West Conshohocken, PA 19428. component If the fingerprinting test is conducted by the manufacturer, the test res
34、ults shall be certified by the 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
35、 primer, midcoat, and topcoat, 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 volum
36、e Mixing ratio by volume or weight 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 sol
37、ids content by volume Wet-film thickness (WFT) range (pm or mil) Dry-film thickness (DFT) range (pm or mil) (3) SSPC: The Society for Protective Coatings, 40 24th Street 6th Floor, Pittsburgh PA 15222-4656. International Organization for Standardization (ISO), 1 rue de Varernb, Case postale 56, CH-I
38、21 1 Geneva 20, Switzerland. 2 NACE International TM0404-2004 Section 4: Test Solution Synthetic seawater used in several of the test methods in synthetic seawater. Commercial-grade sea salts may be this standard shall be prepared with the sea salt chemical used instead of reagent-grade sea salts to
39、 prepare the composition in accordance with ASTM D 1 141.5 The minute synthetic seawater. concentration of heavy metals is not required to prepare the Section 5: Test Specimens 5.1 Test Specimen Geometry, Size, Substrate Material, and Minimum Quantity 5.1.1 Table 2 lists the specified test specimen
40、geometry, size, substrate material, and minimum quantity of test specimens for each test method. Extra 5.2 coated test specimens should be prepared in case a repeat test is needed later. center of one of the 76-mm (3.0-in.) sides of each steel panel to suspend the panel in the air so that the entire
41、 panel can be coated at one time. Other techniques to spray all sides of a panel may also be used. Su iface Preparation 5.2.1 NACE No. 2ESPC-SP 106 or IS0 8501-1 Sa 2.57 near-white metal finish. 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
42、 Table 2: Test Specimen Geometry, Size, Substrate Material, and Minimum Quantity Test Method Test Specimen Geometry and Size Substrate Material Minimum Quantity Rust Creepage Resistance Edge Retention Thermal Cycling Resistance Flexibility Impact Strength Seawater Immersion Resistance (for splash zo
43、ne only) Cathodic Disbondment (for splash zone only) 5.3 Anchor Profile 76 x 150 x4.75-mm (3.0 x 6.0 x 0,188-in.) 90“ angle bar, 150 mm (6.0 in.) long, 19 x 19 x 3.18 mm (0.75 x 0.75 x 0.125 in.) C-Channel, 50 mm (2 in.) wide, 76 mm (3.0 in.) long, 3.18 mm (0.125 in.) thick Panel with minimum length
44、 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 x 4.75-mm (3.0 x 6.0 x 0,188-in.) panel 76 x 150 x 4.75-mm (3.0 x 6.0 x 0,188-in.) panel 76 x 150 x 4.75-mm (3.0 x 6.0 x 0,188-in.) panel ASTM A 368 steel 4 Aluminum 3 Carbon s
45、teel 3 Carbon steel 6 ASTM A 36 steel 3 ASTM A 36 steel 2 ASTM A 36 steel 2 shall be 40 to 75 pm (1.5 to 3.0 mil) as measured with a replica tape in accordance with NACE Standard RP0287. Anchor profile on all steel panels shall be as specified by the coating manufacturer. If not specified, the ancho
46、r profile NACE International 3 TM0404-2004 Section 6: Coating Application 6.1 All coatings shall be well mixed using Part NB ratios as specified by the manufacturers. Each coat of the coating system shall be applied to the substrate material at the specified DFT by a conventional air or airless spra
47、y gun, whichever is specified by the facility owner. 6.2 The application method, temperature, and relative humidity at the time of application shall be recorded. After the coating system has cured, DFT measurements shall be made in five locations on each test specimen, and the average DFT shall be d
48、etermined. 6.3 All coating systems shall be allowed to cure at room temperature for at least one week before testing. Section 7: Rust Creepage Resistance Test 7.1 Test Specimen Preparation All six sides of steel panels shall be coated with the coating system. After the coating system has cured for a
49、t least one week, a vertical scribe, 90 mm (3.5 in.) long and 1 to 2 mm (0.04 to 0.08 in.) wide, shall be made on each test specimen using a motorized circular blade. Care shall be taken to make sure that each scribe is just deep enough to expose bare steel. The scribe shall be made at the appropriate location on the test specimen to receive uniform ultraviolet (UV) light exposure. The scribe shall be cleaned with compressed air, leaving no debris in the scribe. 7.2 Test Procedure 7.2.1 For the rust creepage resistance test, ASTM D 5894” shall be adopted, but modi
