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Date Submitted: 09/13/2011 02:04 AM
s40 Pharmaceutical Technology FILTRATION 2004 www.pharmtech.com
dequate configuration of steamin-
place (SIP) systems is vital
and must be considered at the
early conception stage of the plant.
The critical requirements associated
with SIP include proper steam distribution,
noncondensable gases removal,
and continuous condensate
elimination. Good engineering
practices, adequate piping design,
steam traps, valves, and monitoring
instrumentation are essential to ensuring
SIP validation.
Gas filter engineering
System design, installation, and standard
operating procedure.Vent filters
are required for the sterile introduction
of air or nitrogen during and
after the process of vessel sterilization.
Gas filters are made of hydrophobic
materials such as PTFE to
prevent blockage by humidity during
use. Therefore, condensate may
accumulate on the membrane during
SIP and produce blind filters. In
such circumstances, the steam no
longer passes through the membrane,
leading to incorrect sterilization.
The filter housing must there-
Principles of Steam-In-
Place
Jean-Marc Cappia
A
MILLIPORE CORPORATION
Steaming-in-place (SIP) is a
widely adopted method for the
in-line sterilization of processing
equipment.The main advantage
of SIP relies on manipulation
reduction and aseptic connections
that might compromise the
integrity of the downstream
equipment.
Jean-Marc Cappia is the
program director for high filtration
performance solutions in the
BioPharmaceutical Division of
Millipore Corporation, 80 Ashby
Road, Bedford, MA 01730, tel.
781.533.2219, jean-marc_cappia
@millipore.com.
Pharmaceutical Technology FILTRATION 2004 s41
fore be designed and installed
for correct drainage
of condensate, with the inlet
sterile side of the cartridge
fitted on the sterile vessel.
This setup is preferred, since
the housing closure as well
as the connections to vent
and drain valves may present
risks of leakage on the
upstream side of the...