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4
Seiberling
The vessel capacity may range from 30L to 16 m 3 or more. A majority of
CIP-cleaned processes areautomatically controlled and the vessel and its dedicated
piping will include air-operated valves to fill (T1V1 and T2V1), empty (T1V2 and
T2V2), supply flush, wash and rinse solutions to the circuit (T1V3 and T2V3), and to
subcircuits such as dip tubes and sample connections. Valves for the vent filter,
sampling, etc., may be manually operated or automated, this decision being made
on the basis of process automation requirements. An outlet valve of adequate size to
accommodate CIP flush, wash and rinse solution flow rates is mandatory and aflat
plate vortex breaker above the outlet opening is highly recommended to minimize
air entrainment and prevent cavitation of any required return pumps. Additional
criteria for CIPable design will follow later in this chapter.
Figure 2isaphoto of typical tank top piping as shown schematically in
Figure 1including avent filter with amanual valve and arupturedisk. The two airoperated
valves upper left control flow from acommon line originating at aTPto
either the inlet, or the spray, orboth (for CIP) and are equivalent to T1V1 and T1V3
on T1 in the figure. Figure 3shows the spray balls to either side behind the manway
rim, and amagnetically driven agitator and permanently installed flat plate vortex
breaker on the bottom. The selection and application of spray devices is described in
chapter 9.
U-Bend Transfer Panels
Multi-port TPs (TP1 and TP2) shown as (3) are generally used to organize
installation and support of product and CIPS/CIPR piping, and facilitate connections
for required production, CIP and SIP operations. The design and application
of TPs is described in depth in chapter 12. TPs require manual operations to
FIGURE 2 This view of amedia prep vessel illustrates the high manway collar and also the rupture
disc, vent filter, and level indicator nozzles that create clean-in-place spray coverage problems.