Class and Statutory News

Classifying concrete hulls

Mar. 30 2019

Classifying concrete hulls

BV has recently received a number of inquiries in relation to the classification of new projects involving stationary units, docked or moored within riverine or sheltered maritime environments, either under our NR580 Rules for floating establishments (with public spaces) or under Rule NR612 for harbour equipment – which includes the notation CR for units built in concrete. The use of concrete is not common in the shipbuilding industry, but a few projects have already been undertaken with this material, mainly offshore installations and stationary platforms moored in sheltered areas.

Although there is no specific requirement for concrete structures in the classification Rule books, BV has nevertheless published a guide to “Design and Construction of Offshore Concrete Structures”, NI594 (February 2017). Inland navigation vessels with concrete hulls must comply with the Rules for Inland Navigation Vessels NR217, completed using Guideline NI594, which includes the methodology for inspecting and testing concrete components as well as parameters for construction and for reinforcing and pre-stressing steel. Additional to the recognized international standards listed in the Guideline, the hull scantling must be checked with regard to the applicable requirements of the classification Rules. Bureau Veritas, as a global leader in the inspection of civil engineering projects, can provide hundreds of specialists in concrete structures. A joint initiative between BV’s Marine & Offshore and Construction divisions would provide an efficient partnership to handle the classification of a stationary unit built in concrete and intended for operation on waterways or lakes or in the maritime environment.