Jacket inspection/cleanout port eradicates dismantling of jacket piping, lets rapid inspection and cleaning of reactor jacket In glass lined reactor, glass lining is done about MS as glass lining will likely be in immediate contact with the reaction mass hence MS is used rather than SS as SS is costly. https://wafer-boats93714.blogsvirals.com/28453302/the-5-second-trick-for-dietrich-glass-lined-reactors