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Pipeline Burial Modules

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CALCULATOR MODULE : Soil Pipe Cover Weight And Uplift Resistance   ±

Calculate soil and pipe cover weight and uplift resistance for buried pipelines.

The cover weight can be calculated for either cohesive and non cohesive soils. The uplift resistance includes the weight of the pipe (either dry or submnerged and full or empty). For dry pipelines use the specific weight of dry soil. For wet pipelines use the specific weight of wet soil.

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CALCULATOR MODULE : Subsea Pipeline Seabed Embedment   ±

Calculate subsea pipeline seabed embedment or penetration depth due to self weight for a pipeline resting on sand or clay.

Penetration depth can normally be calculated for hydrotest during precommissioning (water filled). The penetration depth for rock is assumed to be zero.

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CALCULATOR MODULE : Subsea Pipeline Lay Radius   ±

Calculate subsea pipeline minimum lay radius from soil friction and lay tension.

The lay radius is limited by the lateral friction resistance at the pipeline laydown point.

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CALCULATOR MODULE : DNVGL RP F109 Initial Seabed Penetration   ±

Calculate DNVGL RP-F109 initial pipeline penetration due to weight on sand and clay soils.

Penetration should be calculated for the maximum pipe weight, normally the water filled weight during pre commissioning. Pipe penetration or embedment is assumed to be zero on rocky seabeds.

Reference : DNVGL-RP-F109 : On-Bottom Stability Design Of Submarine Pipelines (Download from the DNVGL website)

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CALCULATOR MODULE : DNVGL RP F109 Piping And Self Burial   ±

Calculate DNVGL RP-F109 piping and pipeline self burial in non cohesive soils.

Piping occurs with mobile, non cohesive sandy seabeds due to the flow around and underneath the pipe. Self burial is self limiting as the flow reduces with burial depth. The equilibrium burial depth is calculated. The Shields number can be used to check the onset of seabed instability. Self burial is a gradual process which occurs over a period of time. Self burial should be calculated using a sea state significantly smaller than the maximum design sea state.

Reference : DNVGL-RP-F109 : On-Bottom Stability Design Of Submarine Pipelines (Download from the DNVGL website)

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DATA MODULE : ASME B31 Pipe And Flange Dimension ( Open In Popup Workbook )   ±

ASME B31.8 gas pipe and flange data values: pipe dimensions, flange dimensions, cover requirements, cold bends, burn through and location class.

Reference : ANSI/ASME B31.8 : Gas Transmission And Distribution Piping Systems

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