1.0 INTRODUCTION GENERAL SCOPE PREPARATION SURFACE TREATMENT/CLEANING BLASTING COATING...

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2 TABLE OF CONTENTS 1.0 INTRODUCTION GENERAL SCOPE PREPARATION SURFACE TREATMENT/CLEANING BLASTING COATING GENERAL SURFACE ROUGHNESS SOLUBLE SALT CONTAMINATION PAINTING CONDITIONS AND APPLICATION INSTRUCTIONS STRIPE COATING REPAIR AREA STATUS AND PROGRESS REPORTS COATING SYSTEMS ON BOARD NEPTUNE ENERGY OFFSHORE PLATFORMS... 6 APPENDIX C Specification XXX rev. X Page 2 of 6

3 1.0 INTRODUCTION 1.1 GENERAL This supplement is intended for use by Company, Contractors, Suppliers, Company inspectors, quality control personnel and suppliers and manufacturers of paints and equipment. Where coating work is involved this supplement to specification 525 shall be quoted as a whole or in part of any contractual document. This supplement is an integral part of "General Specification for Painting and Coating" number 525 latest revision. All general and specific specifications mentioned in Specification 525 concerning, safety, quality, painting, etc. also concerns this supplement. This supplement describes the general working procedures for maintenance work on Neptune Energy platforms. 1.2 SCOPE For the specific scope see the relevant work instructions for the project. Specification XXX rev. X Page 3 of 6

4 2.0 PREPARATION For details reference is made to the relevant work instructions. 2.1 SURFACE TREATMENT/CLEANING Prior to blasting or painting activities the to be treated areas must be cleaned excessively by using high pressure washing equipment e.g. steam cleaner, fresh water 80 bar and 90 C. A detergent may be added to the water. The used type of detergent shall be proven biologically degradable and must be approved by Neptune Energy. After the cleaning and drying the surface must be free of any contamination. 2.2 BLASTING Blast cleaning shall be conducted as described in Specification 525 paragraph 4. Three types of surface treatment can be performed: Spot and sweepblasting Rusty spots are blasted to Sa 2,5 (ISO ) and the rest of the surface sweepblasted to roughen up the (intact) surface for further painting. Sweepblasting is done to retrieve any hidden defects in the coating. The entire surface is blasted to Sa 2,5 (ISO ) In case of pitting extra blasting is performed. Manually surface pre-treatment. (only in case blasting is not possible) Mechanical derusting and brush paint application. Power tool cleaning such as needle gunning shall be confined to minor areas. Neptune Energy coating supervisor will only carry out alternate surface cleaning after approval of the proposal. Surface cleanliness shall be St 3 according to ISO standard. Surface roughness should be achieved according to paint manufacturer's product data sheets. Specification XXX rev. X Page 4 of 6

5 3.0 COATING 3.1 GENERAL The requirements for the coating systems in this specification are related to the application to blasted surfaces. The paint manufacturer's product datasheets and user instructions are an integral part of this specification. The paint manufacturer is responsible for delivery of the necessary paint and safety datasheets. Before commencing any paintwork the compatibility of the new paint with the existing system must be checked and if necessary tested. The compatibility must also be confirmed by the paint manufacturer. 3.2 SURFACE ROUGHNESS The roughness shall be determined by using the method as described in ISO part 1 till 4. The required roughness lies between 50 and 80 micrometers Rz value. The used abrasive shall be of a sharp edged type. Checks on surface profiles shall be made on each component. 3.3 SOLUBLE SALT CONTAMINATION One of the main causes of corrosion offshore is the presence of salt. The quantity of dissolved salts on the blasted surface, however, has to be determined according to ISO and ISO (Bresle method). The following values must be maintained: Coating category New construction Maintenance Internal an external CS surfaces 25 mg/m2 50 mg/m2 Stainless Steel 20 mg/m2 20 mg/m2 Testing must be performed at least once per day per component. Special care must be taken for trapped and dried out water. 3.4 PAINTING CONDITIONS AND APPLICATION INSTRUCTIONS During the paintwork the climate and environmental conditions must be carefully monitored. The paint manufacturer s product datasheet must be followed to the letter. Measurements and registrations of these conditions must be made at least three times a day during blasting and painting activities. Specification XXX rev. X Page 5 of 6

6 3.5 STRIPE COATING Where necessary, stripe coating on sharp edges and welds to achieve the required dry film thickness, must be carried out. If necessary, sharp edges shall be rounded to a minimum radius of 1.5 mm. 3.6 REPAIR AREA The areas to be repaired must be cleaned at least 250 mm around the damaged spot and the edges shall be feathered over a width of at least 70 mm. The paint datasheets and application instructions must be followed. 3.7 STATUS AND PROGRESS REPORTS Contractor shall provide Neptune Energy with daily reports giving details of climate conditions, relative humidity, steel and dewpoint temperatures as well as dft readings if applicable, progress of the work etc. All parts and areas that have been inspected and accepted or rejected shall be clearly identified and the daily reports shall be signed off by the Neptune Energy representative. 3.8 COATING SYSTEMS ON BOARD NEPTUNE ENERGY OFFSHORE PLATFORMS For coating systems use Appendix C2. NOTE: On manually surface pre-treated areas, only the de-rusted spots are to be treated in the respective paint system. Specification XXX rev. X Page 6 of 6

7 APPENDIX C2. DATASHEET SPECIFYING VARIOUS SUPPLIERS FOR MAINTENANCE OFFSHORE (To be used as a guideline only) Components Syst. Surface prep. Coat Nr Coating type Min DFT Max DFT µ µ RAL End colour Ameron Code Hempel Code International Code Jotun Code Sigma Code Zandleven Code Structures, CS equipment 10 Sa 2 1/2 1 Epoxy/zinc rich primer Dimetcote 11 Intergard 269 Jotacote Universal Acraton OT CS piping, etc. 2 High solid epoxy coating Amercoat 235 Intergard 475HS Jotacote Universal Fifi Polyfinish MU- T < 120 C 3 Epoxy acrylic top coat Amercoat 450 E Interthane 990 Hardtop AS 3000 DL Total DFT CS equipment and piping 2 Sa 2 ½ 1 Zinc rich primer Insulated or not insulated 2 Medium solid epoxy coating Dimetcote 11 Intergard 269 Epoxy HR Amercoat 891 Intergard 475HS Epoxy HR 120 C < T < 200 C 3 Top coat Amercoat 891 Interthane 990 Total DFT CS equipment and piping 3 Sa 2 1/2 1 Zinc silicate Dimetcote 9 Interzinc 22 Insulated or not insulated 2 Silicone based aluminium Silver gray Amercoat 878 Intertherm 50 Epoxy HR 200 C < T < 400 C Total DFT Epoxy HR (Check if min curing temp. will be reached) Hardtop AS Monopox Microzinc Polyfinish MU-DL Zinksilicate ZL 400 Aquisil SC- Aluminium Deck uppersides 11 Sa 2 1/2 1 Epoxy primer Amercoat 71 Intergard 269 Jotacote Universal Acraton OT (CS, T < 100 C) 2 High solid epoxy coating Amercoat 400C Interseal 670HS Jotacote Universal 7038 High solid epoxy top (No anti-slip additive) Amercoat 400C Interseal 670HS Hardtop AS coating Total DFT SS & DS equipment and 5 Sa 2 1/2 1 Epoxy primer SS Amercoat 71 Intergard 269 Jotacote Universal piping 5024 (SS = Stainless steel, DS In. med 2 Epoxy sealer Amerlock 400 HS Intergard 475HS Jotacote Universal = duplex steel) DS Cladded CS equipm. with 3 Top coat Amerlock 400 HS colour Interthane 990 Hardtop AS SS T < 120 C Total DFT DS equipment and piping 6 Sa 2 1/2 1 Epoxy primer Amercoat 71 Interseal 670HS (DS = duplex (SS) steel) In. med 2 Epoxy sealer Amercoat 90 S Interseal 670HS Epoxy HR 120 C < T < 200 C 3 Top coat Amercoat 90 S Interseal 670HS Hardtop AS Total DFT Underwater / splashzone 12 Sa 2 1/2 1 Epoxy primer Amercoat 71 TC Intergard 269 structures 9002/ 9017 / (jackets, clamps) 2 High solid epoxy coating Amercoat 385 HS Interzone 954 Jotacote Universal 9016 / (splash-zone / -4>+6m 7038 / 3 High solid epoxy coating Amercoat 385 HS Interzone 954 Jotacote Universal LAT) Colour based on use Total DFT Helidecks, upperside 14 Sa 2 1/2 1 Zinc rich primer Markings & colour per drawings and rules 2, 3 High solid epoxy coating 2x 125 2x 175 5= Mark. per Drw./ C 267 Epoxy HR Dimetcote 11 Intergard 269 Jotacote Universal 125 µ Amerlock 400 C Interzone 954 Jota Armour 750 µ Non skid additive 4mm Mandurax 1-3 mm Mandurax 1-3 mm 4 High solid epoxy coating Amerlock 400 C Interzone 954 Jota Armour Monopox ZF- Universal Monopox HB coating Polyfinish MU-DL Monopox P9 Coating Monopox HB ijzerglimmer Monopox HB ijzerglimmer Monopox ZF- Universal Polyfinish MU-DL Monopox Micro zink Mandurax 1-3 mm Mandurax 1-3 mm µ 5 High solid epoxy coating Amercoat 450 SG Intergard 740 Hardtop AS 50 µ Total DFT Note system 5 and 6: Smooth non-shining surface