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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Design Considerations, Construction, and Performance of an Extensive Sea Water Conveyance System
Author(s): A. J. Hulshizer and A. Kodal
Publication: Special Publication
Appears on pages(s): 677-704
Keywords: coatings; concrete construction; concrete durability; corrosion; marine atmospheres; nickel; performance; reinforcing steels; sea water; structural design; underwater structures; General
Abstract:The ocean-cooling water supply and return system for the Seabrook Nuclear Power Plant is a vital link in the operation of the multibillion dollar facility. The water conveyance system is comprised of three main concrete construction components, each representing different construction techniques and somewhat different corrosion problems and approaches to promoting durability. Concrete intake heads, weighing 227 tons each, were precast off site and utilized nickel-coated reinforcement as a special means to preclude corrosion which otherwise would be accelerated by the presence of a 90-10 copper-nickel anti-fouling cladding. Prefabricated 1.52 and 2.87 m diameter vertical ocean shafts have their steel outer casings protected against corrosion by a mesh reinforced, spin cast, low water-cement ratio, mortar lining. Over 10 km of 5.8 meter diameter tunnels and the vertical land shafts were constructed of conventional cast-in-place, reinforced concrete. The subsea location of the structures and the depth of the tunnels demand that the concrete perform virtually maintenance free for the 40 year design life of the plant. Paper discusses the initial design considerations, construction experiences, and observations from the underwater inspection conducted on the various concrete components, after having been submerged for as much as 7 years at the time of inspection.
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