SUEA CIP Circuit Flow Paths>
The SUEA CIP Skid can accomplish all steps of any CIP Program; i.e., a Portable Tank, a Fixed Process or Hold Tank, a Bio reactor, a Chromatography or Filtration Skid, or a complex piping circuit requiring sequencing through multiple paths (and various combinations of same), via selected combinations of the following four operational flow paths, and in accordance with a RECIPE of time, temperature, concentration and flow rate variables.
CHARGING RECIRCULATION TANK
This is the initial step of every program cycle and is the means of supplying operating water of one or more types to the skid components and the connected CIP circuit. This operations generally occurs as part of the initial PreRinse. It may be preceded by a Rinse Water Tank procedure.
Rinsing is required atleast two and generally three points in the total CIP program, and may utilize two different types of water. Rinse generally means delivering the source water to and through the circuit to remove most of what ever was in the circuit when the rinse began. The effluent leaving the circuit, i.e., rinse water and product soil, or rinse water and a solution wash residue, will be discharged to waste. Minimally effective rinsing may be achieved in piping systems or process equipment by delivery and discharge of a volume equal to 1.5 times the volume of the circuit. Process tanks and hold tanks are most effectively “burst rinsed”; i.e. spray 30 seconds and then drain 45 seconds, to fully evacuate the vessel, repeating three times, to avoid the slow, water wasting process of dilution rinsing when a puddle develops in the vessel. Continuous rinsing, however, is applicable to bio reactors which require rinsing and cleaning of multiple legs simultaneously with spray cleaning of the vessel.
This step precedes every recirculation step. A metered volume of water (generally 12-14 gallons) will be introduced to the Recirculation Tank and the Motive Pump will start. A metered volume of water will then be supplied to the circuit and if a vessel is being cleaned, the return pump (if required) will be turned on. The System Fill step will introduce sufficient water to fill the CIPS line, create the required minimal puddle in a vessel and approximate half fill the return line. Line circuits will require sufficient water to fill the CIPS line and the total circuit.
At completion of the System Fill the Water supply valve to the CIPS Pump will close and the Re circulation Tank supply valve will open. As re circulation through the circuit is initiated, the heat ex-changer will be turned on and chemicals will be fed in the required volume. Following several minutes of mixing and heating the chemical concentration will be checked The actual wash period will commence only after the solution is at set-point temperature and the concentration is above the required minimum level as determined by the Conductivity Sensor.
RE CIRCULATION TANK PUMP OUT
Following completion of the Solution Wash, a Post-Rinse will follow, and then a CIPS Air blow to empty the CIPS to a vessel, or a complete line circuit. A brief wait for return flow to the Re-circulation Tank will then be followed by Re-circulation Tank Pump Out to drain.