AN OVERVIEW OF CIP TECHNOLOGY
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Verification of Reactor Leg CIP Flow 

The hoses shown on the photograph of the preceeding page are connected to two drops from a CIPS Loop with a Pressure Transducer between the close coupled drops.  The third hose is from the CIP Return Pump located between the tank outles on the schematic below and the CIPR Loop drop. The left hand valve supplies the sprays.  The right hand valve supplies the various reactor legs via interconnecting piping and CIP Jumpers as shown, providing a multiplicity of paths from the valve to the vessel. 

All CIPR (CIP Return flow) will be via the reactor outlet. The interconnecting piping includes (a) Spray Supply lines and valves, (b) an Exhaust line and filters, (c) a Media feed line, (d) a Base feed line, (e) gas lines for overlay and sparger supplies, (f) a sample valve (connection), and (g) the outlet line to Harvest tank. The required steam and condensate piping is included, and CIP Jumpers and Tie-Lines are shown in heavy-line delineation near their point of installation. 
 

 
Flow Verification Procedure 
 

  • Establish flow through the sprays at the design flow rate and determine and store the Reference Pressure.
  • Open the required valves to establish any desired path through the leg piping to the vessel.  As the flow increases, the pressure at the sensor will decrease due to increased CIPS head loss.
  • Increase the CIPS flow until the pressure at the sensor is approximately equal to the Reference Pressure.
  • The new (increased) flow will be the sum of the flow to the sprays and through the selected leg path.
  • Repeat above for each successive leg path.
In practice, each new flow is compared to a table of data stored on the basis of measurments made during the validation process.  A successful match of expected and actual flows verifys the proper configuration of the piping, that all manually operated valves are open, and that all automatic valves are operating in accordance with the required sequence. 

This basic concept can also be applied by fixing the flow and determining the change in pressure as the flow is sequenced through the various legs from a single supply point.  And, it can be applied to any multi-path circuit where the pressure sensor can be located in close proximity to the origin of the legs through which the flow is sequenced. 
 

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