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October 11-13,
                                      50 YOUNG PROFESSIONAL
                                   2022                                                   Antalya TURKIYE  |  2022

        In 2019 Covid-19 pandemic, one of the largest health cri-  Abstract:
        se in the last decades, has pinpointed the problem of   Productions in clean environments such as clean-
        airborne virus transmission and in general of airborne   rooms have been usually developed in single floor
        contamination within indoor environments, places usual-  process to keep the flow path of personnel, materials
        ly less sensitive to ventilation and contamination control   and products within the same clean environment
        (Morawska, Allen, & Bahnfleth, 2021), (Somsen, van Rijn,   and level. Vertical connection systems in clean envi-
        Kooij, Bem, & Bonn, 2020), (Smith, 2013).
                                                                ronments exist and are used by personnel through
        On the contrary, industries where clean productions are   clean stairs, by processes through closed loops, and
        carried out since many decades are fully aware of the
        contamination problem, disregarding its nature (inert,   for handling of products or semifinished products.
        microbiological, chemical, radioactive) or its way of prop-  The latter ones are commonly treated with prop-
        agation (air, surface, liquid, products or whatsoever). In   er clean boxes or wrapped with protection shields
        those sectors highly ruled, controlled environments such   because the environments of the vertical handling
        as cleanrooms are commonly used as production envi-     systems are generally not contamination controlled.
        ronments able to control contamination guaranteeing     The work presented will aim with the design, the
        products quality and personnel safety respecting strict   construction, and TCV process of a vertical clean
        standards, GLs and laws (ISO 14644-1, 2015), (US Food and
        Drug Administration, 2004), (EU-GMP- Annex 1, 2008).    lift class ISO7 which connects separated production
                                                                cleanrooms operating with different HVAC systems.
        Productions in clean environments have been usually de-  The clean vertical transportation system designed
        veloped in single floor process to keep the flow path of
        personnel, materials and products within the same clean   can satisfy both products and personnel logistic at
        environment and level. Vertical connection systems in   once maintaining the desired degree of air cleanli-
        those environments are                                  ness. The peculiarity of the cabin lift, airlocks, and
        used by personnel through clean stairs and by processes   shaft’s ventilation system coupled with the environ-
        through closed loops.                                   mental monitoring control and interlocking systems
                                                                installed assures a unique, robust and redundant
        Generally, or at least for most of the cleanroom produc-
        tion facilities, vertical automatic transportation such as   safety ventilation approach for the contamination
        elevator are not clean and not controlled environments.   control of the clean environments. This solution en-
        Therefore, handling of products or semifinished products   visages a lean manufacturing concept which will help
        by different facility floors is possible, unless the goods are   clean production processes in connecting different
        properly prepared, wrapped and packed in contamination   cleanroom floors saving time, increasing productivity,
        proof boxes for transportation between different floors of   reducing man or AGV work and reducing foot-print
        the production facility. Few researches and studies have
        been conducted on the possibility to use a clean eleva-  for packaging used for internal handling while guar-
        tor for products and personnel transportation. A Chinese   anteeing a high degree of safety for personnel and
        study (Wang, et al., 2012) presented a theoretical work on   for product quality.
        a clean elevator prototype giving info and comments on
        the general characteristics and peculiarities that the new
        devices should have, without going so deep into details.
        However, the study was primordial and lacked of details,
        logic control and specs to be used in a real cleanroom production factory. Only, after the Covid-19 outbreak, the researcher
        communities started to put interest into ventilation and contamination control within elevators (Van Rijn, et al., 2020 )
        and (ISO 8100-32:2020, 2020). (Liu, et al., 2022) carried out a numerical study on the probability of infection related to
        the infection dose which people can get while riding a lift in function of ACH and of air diffusion direction. Conclusions
        shown that the higher the ACH, the better the cleaning effect in the cabin lift. In addition in this work, it is stated that
        by having an extraction air close to the ceiling, there is a better and smoother particle distribution within the cabin lift,
        and less probability to have a high infection dose while riding a lift with other people. An interesting paper (Van Der
        Aa, Claessen, Van Der Spoel, & Van Der Velde, 2021) in REHVA Journal proposed a novel prototype of civil elevator with
        downward flow ventilation system, which largely reflects the ventilation principles used in cleanroom environments.
        However, for matter of space and aesthetics the solution proposed considered air extraction from the confined space
        only at one side, having therefore a prevalent air and contaminants direction not well designed.
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