Here L1 to L3 are used to represent three different submarine pipelines. Risk assessment index data of the three submarine pipelines are shown in Table 12 under n-value neutrosophic information.
NVNN evaluation data of submarine pipeline
| . | L1 . | L2 . | L3 . |
|---|---|---|---|
| Environmental corrosion | 0.3,0.2.0.8 | 0.7,0.6,0.3 | 0.7,0.3,0.3 |
| Cathodic protection | 0.7,0.6,0.4 | 0.8,0.6,0.3 | 0.7,0.6,0.3 |
| Pipeline property | 0.2,0.8,0.9 | 0.8,0.4,0.3 | 0.9,0.2,0.1 |
| Stress corrosion | 0.6,0.4,0.5 | 0.7,0.2,0.5 | 0.9,0.9,0.2 |
| Number of years | 0.6,0.5,0.9 | 0.8,0.4,0.6 | 0.6,0.8,0.3 |
| Fluid properties | 0.7,0.2,0.4 | 0.5,0.5,0.5 | 0.6,0.6,0.3 |
| Internal corrosion protection | 0.5,0.1,0.6 | 0.8,0.2,0.4 | 0.7,0.2.0.4 |
| Age and corrosion detection | 0.5,0.6,0.5 | 0.5,0.8,0.5 | 0.2,0.4,0.9 |
| Pressure safety factor | 0.7,0.2,0.3 | 0.7,0.3,0.3 | 0.8,0.1,0.1 |
| Pipe diameter | 0.9,0.1,0.1 | 0.7,0.3,0.3 | 0.9,0.1,0.1 |
| Pipeline life | 0.4,0.2,0.1 | 0.7,0.3,0.3 | 0.7,0.1,0.1 |
| Wave current scour | 0.9,0.1,0.2 | 0.8,0.2,0.4 | 0.9,0.2.0.1 |
| Mitigation measures | 0.8,0.5,0.3 | 0.7,0.3,0.3 | 0.8,0.2,0.4 |
| Soil movement | 0.8,0.3,0.3 | 0.7,0.6,0.3 | 0.8,0.2,0.3 |
| Extreme weather | 0.8,0.3,0.3 | 0.5,0.6,0.5 | 0.6,0.2,0.3 |
| Overburden condition | 0.8,0.3,0.4 | 0.8,0.5,0.3 | 0.7,0.2,0.4 |
| Water activity level | 0.9,0.1,0.2 | 0.6,0.2,0.5 | 0.4,0.3,0.7 |
| Preventive measures against damage | 0.5,0.3,0.6 | 0.7,0.6,0.3 | 0.8,0.2,0.3 |
| Identification of the sea area around the pipeline | 0.3,0.2,0.9 | 0.5,0.8,0.3 | 0.9,0.1,0.1 |
| Safety check | 0.3,0.4,0.7 | 0.5,0.5,0.6 | 0.8,0.3,0.1 |
| Technological procedure | 0.5,0.2,0.3 | 0.5,0.9,0.6 | 0.9,0.3,0.2 |
| Safety record | 0.4,0.2,0.7 | 0.5,0.9,0.6 | 0.8,0.4,0.2 |
| Training situation | 0.5,0.2,0.3 | 0.5,0.4,0.5 | 0.9,0.3,0.2 |
| Business capability | 0.7,0.4,0.4 | 0.7,0.7,0.6 | 0.7,0.3,0.2 |
| Sense of responsibility | 0.4,0.1,0.2 | 0.6,0.2,0.6 | 0.8,0.2.0.2 |
| . | L1 . | L2 . | L3 . |
|---|---|---|---|
| Environmental corrosion | 0.3,0.2.0.8 | 0.7,0.6,0.3 | 0.7,0.3,0.3 |
| Cathodic protection | 0.7,0.6,0.4 | 0.8,0.6,0.3 | 0.7,0.6,0.3 |
| Pipeline property | 0.2,0.8,0.9 | 0.8,0.4,0.3 | 0.9,0.2,0.1 |
| Stress corrosion | 0.6,0.4,0.5 | 0.7,0.2,0.5 | 0.9,0.9,0.2 |
| Number of years | 0.6,0.5,0.9 | 0.8,0.4,0.6 | 0.6,0.8,0.3 |
| Fluid properties | 0.7,0.2,0.4 | 0.5,0.5,0.5 | 0.6,0.6,0.3 |
| Internal corrosion protection | 0.5,0.1,0.6 | 0.8,0.2,0.4 | 0.7,0.2.0.4 |
| Age and corrosion detection | 0.5,0.6,0.5 | 0.5,0.8,0.5 | 0.2,0.4,0.9 |
| Pressure safety factor | 0.7,0.2,0.3 | 0.7,0.3,0.3 | 0.8,0.1,0.1 |
| Pipe diameter | 0.9,0.1,0.1 | 0.7,0.3,0.3 | 0.9,0.1,0.1 |
| Pipeline life | 0.4,0.2,0.1 | 0.7,0.3,0.3 | 0.7,0.1,0.1 |
| Wave current scour | 0.9,0.1,0.2 | 0.8,0.2,0.4 | 0.9,0.2.0.1 |
| Mitigation measures | 0.8,0.5,0.3 | 0.7,0.3,0.3 | 0.8,0.2,0.4 |
| Soil movement | 0.8,0.3,0.3 | 0.7,0.6,0.3 | 0.8,0.2,0.3 |
| Extreme weather | 0.8,0.3,0.3 | 0.5,0.6,0.5 | 0.6,0.2,0.3 |
| Overburden condition | 0.8,0.3,0.4 | 0.8,0.5,0.3 | 0.7,0.2,0.4 |
| Water activity level | 0.9,0.1,0.2 | 0.6,0.2,0.5 | 0.4,0.3,0.7 |
| Preventive measures against damage | 0.5,0.3,0.6 | 0.7,0.6,0.3 | 0.8,0.2,0.3 |
| Identification of the sea area around the pipeline | 0.3,0.2,0.9 | 0.5,0.8,0.3 | 0.9,0.1,0.1 |
| Safety check | 0.3,0.4,0.7 | 0.5,0.5,0.6 | 0.8,0.3,0.1 |
| Technological procedure | 0.5,0.2,0.3 | 0.5,0.9,0.6 | 0.9,0.3,0.2 |
| Safety record | 0.4,0.2,0.7 | 0.5,0.9,0.6 | 0.8,0.4,0.2 |
| Training situation | 0.5,0.2,0.3 | 0.5,0.4,0.5 | 0.9,0.3,0.2 |
| Business capability | 0.7,0.4,0.4 | 0.7,0.7,0.6 | 0.7,0.3,0.2 |
| Sense of responsibility | 0.4,0.1,0.2 | 0.6,0.2,0.6 | 0.8,0.2.0.2 |