guarantee for quality

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1 COT I ndependent advice, research and management fr cnstructin and industry REPORT Testing f Zingametall system Zinga 2x 60 micrmeter accrding t NORSOK Standard M-S01, Rev. 5 fr System 7 LABORATORY Zijlweg 340, Haarlem P.O. Bx AB Overveen The Netherlands T F E inf@ct-nl.cm I Haarlem, 11 May 2007 RB/MH Client Zingametall bvba Industriepark Rzenstraat EKE Belgium Mrs S. Dhndt Prject number Reprt number COT REP Cpy Right This reprt cntains 7 numbered pages and is prperty f COT BV (Netherlands). N part f this reprt may be cpied, distributed, inserted in any text dcument, r reprduced in any ther way r published, withut written permissin f COT BV (Netherlands). This reprt is nt transferable t any persn r bdy, serves nly t take cgnisable and gives in n way the rights n this reprt, neither can lay a claim t any in this reprt discussed prduct r methd. Use f infrmatin frm this reprt is nt permitted withut written permissin f COT BV. When nt agreed in the by COT BV prvided rder cnfirmatin, ur Ruies f Service are applicable. ABN AMRO Bank BIC cde ABNANL2A IBAN NL74ABNA KvK Haarlem

2 page 2 f 7 CONTENTS 1. INTRODUCTION 3 2. GENERAL DATA 3 3. PAINT APPLICATION AND CURING 3 4. PERFORMANCE TESTS Seawater immersin Cyclic test Cathdic disbnding Adhesin test : Overcatable withut mechanical treatment 4 5. REQUIREMENTS Immersin and cyclic test Cathdic disbnding 5 6. RESULTS Original adhesin value Seawater immersin Cyclic Test Cathdic Disbnding Test 7 7. CONCLUSION 7

3 page 3 f 7 1. INTRODUCTION By rder f Zingametall bvba in Eke, Belgium, The Centrum vr Onderzek en Technisch Advies (COT BV) has tested the system Zinga 2 X 60 ~m accrding t Nrsk M-501, Rev. 5. The rder has been given in the letter dated with reference Testen/Algemeen/COT/2/1-SD. 2. GENERAL DATA Samples Batch number COT sample number Test panels, applied with the system: Zinga, 2x 60 ~m /667 test panels, size 150 x 75 x 5 mm 150 x 300 x 5 mm Wet prduct: Alufer N 66485/ /274 COT prject number PAINT APPLICATION AND CURING The cating system was applied n the test panels by Zingametall bvba. Dry film thickness: Zinga: 2x 60 ~m After curing the dry film thickness f the paint system has been measured n each panel, after which the tests have been started.

4 eot rep page 4 f 7 4. PERFORMANCE TESTS 4.1 Seawater immersin The fully cured cating system has been mechanically scribed hrizntal dwn t bare metal. The scratch line is 2 mm wide and 50 mm lng. The system has been immersed in synthetic seawater (accrding t ISO 15711) at 40 C during 4200 hurs accrding t ISO Cyclic test The fully cured cating system has been mechanically scribed hrizntal dwn t bare metal. The scratch line is 2 mm wide and 50 mm lng. The system has been expsed t the fllwing cycle accrding t ISO Annex A: 72 hurs UV-A 340 nm weathermeter in accrdance with ISO methd A (4 hurs UVlight at 60 C / 4 hurs cndensatin at 50 C) 72 hurs Salt Spray Test, accrding t ISO 7253 with synthetic seawater in accrdance with ASTM hurs Expsure t lw temperature (-20 C). The ttal expsure time is 4200 hurs. 4.3 Cathdic disbnding Cathdic disbnding has been determined accrding t ISO (ISO 15711). After 6 mnths expsure time the maximum disbnding is measured. 4.4 Adhesin test The adhesin befre and after the cyclic test has been determined by a pneumatic adhesin tester in accrdance with ISO The cating surface and the dlly have been sanded lightly and a epxy adhesive has been applied. After curing f the adhesive and prir t testing, the cating has been scratched arund the dlly dwn t the bare metal. Three trials have been dne and the average value has been reprted. 4.5 Overcatable withut mechanical treatment After 4200 hurs f cyclic testing the system has been cated with Alufer N withut mechanical treatment. After 7 days the adhesin has been determined accrding t ISO 4624.

5 page 5 f 7 5. REQUIREMENTS 5.1 Immersin and cyclic test After expsure t the specified time, the test panels shall cmply with the fllwing requirements: Methd ISO ISO ISO ISO ISO 4624 ISO 4624 Crrsin creep frm scribe* Blistering Rusting Cracking Flaking Adhesin Overcatable withut mechanical treatment Requirements < 3.0 millimetres min. 5.0 MPa, max 50% reductin frm riginal value min. adhesin f 5 MPa * The crrsin creep is calculated frm the equatin: M=(C-W)/2, where M = crrsin creep C = average f the nine measurements W = the riginal width f the scribe. 5.2 Cathdic disbnding After expsure t the specified time, the test panels shall shw n disbnding arund the hliday with an equivalent diameter >20 mm.

6 page 6 f 7 6. RESULTS 6.1 Original adhesin value The riginal Adhesin value is 4.7±O.1 MPa 6.2 Seawater immersin Expsure Time: 4200 hurs Table 1. Results Immersin test Panel 1 Panel 2 Panel 3 Dry film thickness (IJm) 146±9 174±8 149±14 Crrsin creep frm scribe (mm) ISO Blistering ISO Rusting ISO Cracking ISO Flaking ISO 4624 Adhesin (MPa) 4.7±O.1 5.1±O.1 5.0±O.O 6.3 Cyclic Test Expsure Time: 4200 hurs Table 3. Results Cyclic test Panel 1 Panel 2 Panel 3 Dry film thickness (IJm) 154±7 138±9 163±11 Crrsin creep frm scribe (mm) ISO Blistering ISO Rusting ISO Cracking ISO Flaking ISO 4624 Adhesin (MPa) 7.5±O.O 6.6±O.6 7.2±O.O ISO 4624 Overcatable withut 8.3±O.1 8.1±O.5 7.0±O.2 mechanical treatment (MPa)

7 page 7 f Cathdic Disbanding Test (6 mnths) Maximum disbnding ECD panel 1: Maximum disbnding ECD panel 2: Maximum disbnding ECD panel 3: mm mm mm 7. CONCLUSION The system Zinga, dry film thickness 60/60 IJm, meets the evaluated requirements f Nrsk M-SOl Rev. 5 system 7. CENTRUM VOOR ONDERZOEK EN TECHNISCH ADVIES (COT) ~rave Manager Labratry v_ J.R.S. Brakenhff Prjectmanager Catings