Installation of Halfdan BA Jacket. 06 June 2006 Projects 1

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1 Installation of Halfdan BA Jacket 06 June 2006 rojects 1

2 Halfdan BA topside installation 06 June 2006 rojects 2

3 Halfdan BA facilities 06 June 2006 rojects 3

4 Offshore materials from a user s point of view Fit for urpose Delivery on Time Competition (price and quality) tandardization 06 June 2006 rojects 4

5 Fit for urpose High mechanical properties sufficient yield strength sufficient impact properties, also in the as welded condition metallographic structure, which will not be sensitive to cracks Corrosion selection of appropriate material coating cathodic protection combination, coating and cathodic protection of jackets 06 June 2006 rojects 5

6 ipelines and Risers Linepipes: Material grade: IO L415 QC seamless, quenched and tempered L415 MC submerged arc welded linepipes thermomechanically formed (TMC) Bends manufactured from mother pipes by hot induction process: ame material grade as linepipes. However, welded linepipes in TMC material are not bendable by hot induction method. To be remembered when purchasing. 06 June 2006 rojects 6

7 Jacket tructural steel purchased by Maersk Oil directly at the mill EN grade 355 and 420? T33 grade: 355 J3 420 CharpyV required for thickness 50 mm. CTOD for thickness above 06 June 2006 rojects 7

8 TEEL NAME TEEL NO. GR. TYE THICK mm Z T 33 Type CharpyV, t > G G1N N 1 WH 355G2N N G3N N G G4M M 1 355G5M M G6M M G7M M G7N N G8N N Z 355G8M M Z 355G9N N G9M M G10N N Z 355G10M M Z 355G G11N N 2 06 June 2006 rojects 8

9 COMANY TEEL TYE TANDARD DEIGNATION roduct form Z J3 J3Z EN 10225* EN 10225* option 13 EN 10225* EN 10225* option G1 355G1N 355G2N / 355G3N 355G4 / 355G4M 355G5M / 355G6M 355G7M / 355G7N 355G9N / 355G9M 355G11 / 355G11N / 355G11M 355G13N / 355G13Q 355G14Q / 355G14N 355G8N / 355G8M 355G10N / 355G10M 355G12 / 355G12N / 355G12M 355G15N / 355G15Q 420G1Q / 420G1M 420G3 / 420G3M 420G5Q 420G6Q 420G2Q / 420G2M 420G4 / 420G4M : late, : ection, H: eamless Hollow ection, WH: Welded Hollow ection. (ref. Hans Knudsen, Force Technology) WHH WH H H WH H 06 June 2006 rojects 9

10 Topside tructure Contractor purchases materials from stock EN T31 grade CharpyV required CharpyV required Bridges: Aluminium or CMn steel (2) 06 June 2006 rojects 10

11 Topside Facilities A few examples of materials selection ED 97/23 in general to be adhered to Flowlines uper duplex 254 MO Carbon teel (inhib) roduced water 254 MO Carbon teel (inhib) Glass Reinforced lastic Flare ystems 316L Low Temp. C Water Injection Carbon teel (< 5 ppb oxygen) Heat Exchanger Titanium uper duplex Chem. Inject. Titanium VDF E Carbon steel 06 June 2006 rojects 11

12 Titanium cladded heat exchanger failure in the North ea. 06 June 2006 rojects 12

13 Heat Exchanger Failure (UK sector) Heat exchanger operating with sea water on the shell side and H hydrocarbon gas plus condensates and water on the tube side. Titanium clad plate Carbon steel tube plate Hydrogen released by the corrosion process had reacted with the titanium and this resulted in the progressive formation of brittle titanium hydrides at the bond interface. Corrosion of steel at bond interface Titanium hydride formed along bond interface 06 June 2006 rojects 13

14 Delivery on Time 06 June 2006 rojects 14

15 Delivery on Time 06 June 2006 rojects 15

16 Competition We are pleased to announce that we now have merged with This gives us the opportunity to be even more competitive and to serve you with an even better spectrum of products.? 06 June 2006 rojects 16

17 Quality eems to go the wrong way Receive more and more waiver requests (requests for deviations based on manufacturing errors, etc.) Less experienced ubcontractors lower price but? Overheated market for offshore components 3.1 certificates instead of 3.1C 06 June 2006 rojects 17

18 tandardization 06 June 2006 rojects 18

19 tandardization For a given material group the designer needs: Elasticity modules Yield Tensile Does the material become brittle The manufacturer needs the fabrication properties: Weldability Bend ability Elasticity.. 06 June 2006 rojects 19