Wall thickness Calculation

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

Scope: Systems in the petroleum and natural gas industries - submarine Phases: Concept development, design, construction, operation Pipeline Types: Rigid metallic pipe Limited: - Dimension: 15 < D/t2 < 45

PVE 1 Nguyn Minh Trung

WALL THICKNESS CALCULATION OFFSHORE PIPELINE DNV-OS-F101

Design Parameter

Pressure Containment

(Bursting Pressure)

System Collapse

Propagation Buckling

Combine Load Criteria

Load Control Criteria

Displacement Control Criteria



Design Parameter

Safety Class

Location Class Fluid type

Incidental Factor

Material Resistance

Factor

Temperature Derating



1. Design Parameter

• Location Class



1. Design Parameter

• Fluid type



1. Design Parameter

• Safety Class



1. Design Parameter

• Incidental Factor ginc



1. Design Parameter

• Material Resistance Factor gm



1. Design Parameter

• Temperature Derating



2. Pressure Containment (Bursting Pressure)



3. System Collapse



4. Propagation Buckling



5. Combine Load Criteria



• Load Control Criteria (Internal pressure)



• Load Control Criteria (Internal Pressure)



• Load Control Criteria (External Pressure)



• Displacement Control Condition



Recommendation Thickness


ASME COMPARISION

ASME B31.4 ASME B31.8


QUESTION


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Wall thickness Calculation

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