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Worksheet B — Chasing Air Flow at a Manifold

Worksheet B is used in dual feed air pipe systems when dispatch priorities point to a particular air pipe manifold that shows a high flow condition. It outlines a step-by-step procedure to locate the cause of the high manifold flow. It also serves as a record keeping device for future review, questions or similar problems at the same location. Side one of Worksheet B consists of 15 boxes, each of which represents a unique utility hole or pressure reading location. These boxes are used to record:
  • Delivery pressure, air flow, and cable pneumatic resistance
  • Calculated Zero Leak Projections (area of search), Air Flow Calculations
  • Utility hole numbers, locations, and the distances between them
  • Cable structure (splice closures and interlacing)
  • Individual cable pressures
Worksheet B Sample