The next week, we started visiting the clean rooms for every production units in the entire plant. The automated instruments in the units were mostly run using motors as the prime mover and the movement was directed basically by using different kinds of gears. The packaging is done by hand mostly. There were one or two automated packaging process also. These were expensive plants and were used for only those medicines which has the most demands in the market, like, medicines of the paracetamol or omeprazole family. Various production units are shown at a glance here. 

In the last one or two days, we were instructed about legislative terms and procedures mostly. All the instruments undergo maintenance protocol on a regular basis. Also after certain periods, audit occurs where externally or internally each and every operation and instruments are checked whether proper procedures are followed or not. Once or twice  in a year, measurement instruments like temperature and pressure gauges are calibrated. 

We also visited the generators and ETP (Effluent Treatment Plant). ACI plant possess a captive generation plant, to supply electricity in peak production time basically. ETP is used so that the wastewater of the whole industry is refined before letting it exit to the water of the Shitalakkha river. There is also a large storage facility present to store raw goods and final packaged products. 

The few weeks we stayed there, we learnt a lot. Obviously, we cannot become a dedicated Mechanical Engineer of a pharmaceutical plant from the experience gathered there. But we learnt about office culture, routine and professional life of a mechanical engineer, how to handle co-workers, superior and senior staffs and also the workers who are to be supervised by someone. 

These experiences can never be taught by know books or advice or even through any YouTube videos. These are to be learnt from first hand experiences. Way before entering into professional life, these days was like and eye-opener for us and helped us to prepare for the life ahead mentally. 

We would like to thank the instructors of the Engineering Department of the ACI Pharmaceutical Plants as they helped us and taught us everything during the visit. Also, we would like to thank the Mechanical Department of BUET for arranging this internship program so that we could see how things are followed out there.