Penstocks, Stoplogs and Flood Protection. Founded in 1994, IBS has established itself as one of the worldwide market leaders in temporary demountable and demountable flood protection systems. Our flood protection systems have been used successfully across the UK & Ireland, mainland Europe, Australia and the USA providing protection of high value assets that are at ever increasing risk due to climate induced flooding.Our aluminium demountable and temporary demountable systems continue to be specificed around the world for areas that are at risk of flooding. Our stainless steel penstock range and aluminium and stainless steel stoplog range are ideal for use within the Water and Wastewater treatment industry and are manufactured to the same high specifications as our flood protection systems.