Table 1: Field data for 55Km Subsea Pipeline and Coating Data
| Pipeline Designation |
24” Gas Export Line |
| Steel: API 5L N65 |
| ZONE 1 |
Outside diameter |
mm |
609.6 |
| Wall thickness |
mm |
15.9 |
| ZONE 2 |
Outside diameter |
mm |
622.2 |
| Wall thickness |
mm |
22.2 |
| Corrosion Allowance |
mm |
1.5 |
| SMYS |
Mpa |
448 |
| Density |
Kg/M3
|
7850 |
| Young’s modulus |
Mpa |
207.000 |
| Poisson’s ratio |
- |
0.3 |
| Thermal expansion coeff. |
1oC |
11.7 X 10-6
|
| Steel Conductivity |
W/moC |
45.35 |
| Flow Rate |
Sm3/h |
845000 |
| Average Joint Length |
m |
12.2 |
| Concrete coating: High Density Concrete |
| Coating thickness |
mm |
50 (1) |
| Coating density |
Kg/m3
|
3040 |
| Anti-corrosion coating: 3 Layer-Polyethylene |
| Coating thickness |
Mm |
3.2 |
| Coating density |
Kg/m3 |
965 |
(1) Concrete THK = 50mm at least until the content temperature equals the ambient temperature