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OPERATIONS BRIEFING

For

Onshore Double Joint Fabrication

Pipeline Technique Ltd Ref: OSDJ-001 Rev 1

Created: December 2006

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This document has been produced with the intention to show how the process of Double joint

fabrication takes place.

The facility and equipment was mobilised to cater for the Double Joint Fabrication of the Acergy -Statoil Tyrihans Development Project. Which involved making a total of 1,800 Double Joint (DJ)

welds on 18 and 20 o/d S.A.W pipe of 23.9mm WT including a 3mm thick 316L Stainless Steel

liner

The facility is located inside B.L.G. Shed 20 at Bremen port Germany, and was initially in

production during the 3rd

and 4th

quarters of 2006.

Average production was 40 Double Joints per 12hr shift on this lined pipe. Weld reject/repair rate was 0.45%

on the whole job.

For Carbon Steel pipe welding of the same o/d and wall thickness, production rates of 100+ Double Joints per

shift would be expected.

1. Two single joints are lifted by the forklift, using forklift toestops to stop the single joint moving on the forklift toes.

2. This pipe is then loaded onto rollers.

3. These rollers transported the pipe through door 40 into shed20 and stop in front of the repositioned MP test rack/ Bevelrack.

4. The pipe was then picked up by pipe buggies and placed onto the MP test rack/Bevel rack.

5. The pipe was then sanded in four sections at both ends of thepipe, and two contact points longitudinally at a distance of 9.5m.

6. The MP test was then carried out.

7. During this test of the first pipe, the second pipe was loadedon to the MP rack in preparation for testing using the sameprocedure as detailed above.

8. When the MP test wasn completed and the results recordedthe pipe was colour coded prior to being moved from the testrack, by a hempel system, to the bevel station.

9. Pipes within the same MP range were welded together.

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10. One bevel machine was positioned at each end of the bevelrack and used to bevel one end of each alternate pipe.

11. The first pipe was bevelled by bevel machine #1 and then

lifted by the forklift (fitted with a pipe clamp and rubberprotectors) through the end building columns to front endrack and then moved to one side on the rollers.

At this stage the pipe was marked (PIPE 1 STERN), pipenumber noted and documented.The next pipe was bevelled by bevel machine #2 and thenlifted off the rack by the forklift (fitted with a pipe clamp andrubber protectors) through the end building columns to frontend rack.At this stage the pipe number was noted anddocumented.

12. Two pipe buggies picked up each of these pipes and placedthem into station 1, the bead stall.

13. The pipe at the nest end was rollered into to the nest and theILUC (Internal Line up Clamp) was sent up the pipe andpositioned. Dog set 1 was locked onto the clampt. Thesecond pipe was then be moved to the preset height andthen moved towards the first pipe. The spacer and paneloperator then set up the butt. The argon purge will then beactivated and the pipe ends pre heated if necessary. Thenthe band and bug was fitted.

14. Pass 1 (Root Pass) was then be deposited.

15. Switch off purge

16. The double joint was then rollered back to the nest and theclamp removed.

17. Then the double joint was moved by rollers to station 2where Pass 2 (hot pass) weld operation took place, withband and bug.

18. The double joint was then moved by rollers to station 3where X-RAY and internal camera inspection of the root tookplace.

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19. The double joint was then moved by rollers to station 4 forcooling. This was also a repair station if required.

20. If the X-RAY shoed a defect, the pipe was taken off line bytwo buggies and landed in VEE blocks, repaired thenmoved back into line.

21. If there was no repair the pipe continued to station 5 wherefill passes 3 & 4 of SAW. (submerged arc welding) weredeposited.

22. The double joint was then moved across a hempel system tostation 6 where fill passes 5 & 6 of SAW (submerged arcwelding) were deposited.

23. The double joint was then moved by rollers to station 7where it went through a cooling process.

24. The double joint was then moved by rollers to station 8where the final two passes (7& 8) SAW (submerged arcwelding) were deposited.

25. The double joint was then moved by rollers to station 9where it went through a cooling process.

26. The double joint was then moved by rollers to station 10where it underwent the final radiography.

27. The completed double joint was then moved by rollersoutside to the completion rack.

28. Two pipe buggies then picked up the double jointed pipe andplace it on the outbound rack

29. The completed double joint was then lifted from theoutbound rack, to either the agreed packing area or on to

transport depending on packing requirement.

30. Double Joints were then loaded out on to companytransportation vessel.