Deck reel hub flange facing for offshore pipelay vessel - Vietnam
4 x 2.3m flanges – Triyard shipyard
Having successfully completed in-situ machining for a large 4.7 meter diameter stern thruster flange earlier in the newbuild project, Goltens was asked to deploy its in-situ specialists once again in June 2013.
The follow on work involved the machining of two upper and two lower Deck Reel Hub flanges on the offshore pipelay vessel Lewek Constellation which was being built by Saigon Offshore Fabrication & Engineering Ltd (SOFEL).
Goltens deployed in-situ machinists and one of its 3 meter flange facing machines to start the work.
Lewek Constellation
Checking Flange facer alignment
Flange facing of lower flange
Lower Reel Hub flange surface
Flange facing lower flange
Machining upper reel hub flange
Machining upper reel hub flange
PROJECT FACTS
| REEL HUB FLANGE FACING | |
|---|---|
| Customer: | TriYard Shipyard Vung Tau |
| Project name: | 1200MT 16M Deck Reel |
| Vessel: | Lewek Constellation |
| Top Flange dimension: | OD2300 x ID2120 x 2 pcs |
| Bottom Flange Dimension: | OD2300 x ID2060 x 2 pcs |
| Class Surveyor: | ABS |
| Work period: | 25 days |
IN-SITU FLANGE FACING CONSISTED OF
- Setting up the machine to follow up the reference point provided by Shipyard.
- Flatness checks to monitor and report material removal to the yard.
- Machining of the top and bottom flanges to match the drawing specifications:
Top: OD2300 x ID2120 x 2 pcs Bottom: OD2300 x ID2060 x 2 pcs - Removal of 30mm material from each flange
- Completion of flatness checks of the finished flanges witnessed by class, owner and shipyard.
RESULTS
Goltens completed the macihining of the 4 flanges in a total of 24 days from start to finish. A total of 30mm of material was removed from each flange. The results of the machining were excellent and were accepted by Class surveyor (DNV), the vessel owner and the shipyard’s Quality Control.
CUSTOMER COMMENT:
“We are very satisfied with Goltens’ support, working attitude and excellent workmanship”
Mr. David Zhang
General Manager
TriYard SOFEL, Vung Tau
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