Pipes, ventilation ducts and other

The passage of pipes, ventilation ducts and other services... 

Report the total of all releases to the air that are not released through stacks, vents, ducts, pipes, or any other confined air stream. You must include (1) fugitive equipment leaks from valves, pump seals, flanges, compressors, sampling connections, open-ended lines, etc. (2) evaporative losses from surface impoundments and spills (3) releases from building ventilation systems and (4) any other fugitive or non-point air emissions. 

Where two structures (pipe systems, electrical conductors, ventilation ducts) can deflect relative to each other under shock loading, equipment subject to corrosive conditions should not be attached rigidly to both (see Figures 9.51 and 9.52). 

Other Losses Not only are there friction losses along pipe walls and dynamic losses at the system entry and at each bend or transition, but there are also losses at filters or other air cleaning devices that are part of the system. Filters placed in the air stream will want to slow the flow and create a friction loss. In summary, Bernoulli s equation (Equation 10-8) applies to air flow in ducts. A related form for the equation is the sum of the static pressure and velocity pressure of a point upstream in a ventilation system is equal to the sum of the static pressure, the velocity pressure, friction loss (FL), and dynamic losses (DL) at a point downstream in the system ... 

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