Figure 4

The effect of pipeline length on the upstream pressure-time history of a check valve, placed 300m from the rupture plane.
The valve is assumed to close 1.35 seconds after the passage of flow reversal. The data relate to the rupture of the Piper Alpha MCP01 riser.


Figure 1 - Comparison between measured (shaded area) and predicted bulk vapour temperature/time profiles from BLOWDOWN and BLOWSIM