[LEAKAGE]

Purpose:

Assigns leakage parameters to individual pipes.

Format:

A line for each pipe subject to leaking that contains:

• Pipe ID label
• the area of cracks that leak in sq. mm per 100 units of pipe length (ft or m)
• the rate at which cracks expand in sq. mm per unit of pressure head (ft or m)

Remarks

1. This section is optional.
2. Leak area is the total area of all cracks assumed to exist per 100 feet (or meters) of pipe.
3. Experimental values of expansion range between 0 and 0.001 (sq mm)/m depending on pipe material and crack size.