Page 18 - ISCC'22
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                    October 11-13,   ON CONTAMINATION CONTROL AND
           Antalya TURKIYE  |  2022  CLEANROOM TECHNOLOGY

                                of the room is occupied by a kind of meeting room with tables and chairs. In the sepa-
                                rate quarter of the test environment, a second setting was set up, which reproduces
                                an office of 25 to 30 square metres. Among other things, this cleanliness-controlled
                                reference environment is used to test how mobile and permanently installed ventilation
                                systems affect the spread of infectious SARS-CoV-2 aerosols.
                                Aerosol dispersal is evaluated in the test environments produced by the CAPE system.
                                On the one hand, di-ethyl hexyl sebacate aerosols were generated and atomised so
                                that the particle dispersion clouds could be evaluated.
                                In the second test environment, the office, the experts evaluate virus depletion. The
                                viruses are analysed before and after air pollution control measures in terms of their
                                activity and quantity. In this way, conclusions can be drawn about necessary adjust-
                                ments to the ventilation systems or inactivation steps. The integrated UVC irradiation
                                enables the biological decontamination of the test room in order to return the room to
                                its defined original state after each test. In addition, chemical by-products are measured
                                in the test environment, which are filtered out again after their measurement by means
                                of integrated ACC filtration units in the FFUs of the CAPE system.
                                3.2 Maintenance-CAPE – for maintenance work during ongoing
                                cleanroom production
                                Especially in the semiconductor industry, which on the one hand has the highest re-
                                quirements for absence of contamination of any kind, and on the other hand cannot
                                accept longer downtimes, maintenance concepts must be developed that take these
               CAPE –
                                two aspects into account.
                                The CAPE sytem has been further developed here in a special contamination-free
                                variant that can be set up for neighbouring production areas and is fully operational
         CLEANROOM              within just a few minutes (see figure 5, right side). This stem is the enabler for contami-
              SYSTEM            nation-free maintenance work. The textile CAPE walls represent the spatial demarcation
                                to cleanliness-sensitive areas and serve to remove contamination caused by mainte-
                                nance work or repairs. As a result, high-cleanliness environments are not polluted by
                                particles, liquids, lubricants or chemical contaminants, and subsequent time-consuming
                                and costly cleaning is not necessary. The maintenance area is integrated by means
                                of low-contamination rail systems in the ceiling area, so that different positions can be
                                approached for maintenance work. It’s a user-friendly system, as for the commissioning,
                                the frame is lowered, textile webs are hung on the floor and then pulled up. This leads
                                to a space-saving construction and seamless integration into existing systems.
                                This textile maintenance system can be used in the cleanliness classes with the highest
                                requirements, ISO class 1. Potentially generated contamination from the construction
                                materials used in their operation is also contained and removed in a controlled manner
                                by a negative pressure system inside the CAPE. The CAPE is always designed as a
                                customised solution, individually adapted to the user requirements in different sizes
                                and designs.
                                3.3 Quarantine-CAPE – for temporarily isolating patients,
                                for example in the event of a pandemic
                                Cleanliness-capable single-person quarantine system consisting of a flow-through,
                                textile multilayer system for a tent-like room enclosure. This provides protection against
                                epidemiological spread of viruses. The system has a tridirectional barrier effect:
                                f   protection of a quarantined patient in the interior against microbiologically contam-
                                    inated outside air,
                                f   protection of persons in the surrounding area and
                                f   prevention of contamination carry-over between interior and exterior.
                                Figure 7; Quarantine-CAPE. Left side: single-person system. Right side: chained
                                system for a large number of single-quarantined patients
                                This ensures maximum protection for patients, operators, service staff and doctors (see
                                figure 7, left side). In the context of pandemic situations, very short assembly/disassem-
                                bly times and commissioning within a few minutes are important. The implementation
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