System for corrosion protection of marine structures
AssigneeMPT Services, Inc.
InventorDavid W. Crawford
Life of this patent
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Abstract
A system of corrosion protection and a method of applying the protection on items to be used or being used in marine environments and otherwise susceptible to the deleterious effects of erosion and/or corrosion. The protection is comprised of a coating formed of a polyamine converter and an epoxy resin that can be applied either to virgin metal or to pre-existing metallic items immersed below sea level and a rigid cladding such as fiberglass reinforced pipe encapsulating the coating. Where on site restoration of an item is to be performed, some or all of the coating and cladding application can be conducted underwater by preceding the applications with an abrasive blasting of the surface to be protected.
Claims23
A system of corrosion protection for a corrosion susceptible item adapted for use in a marine environment, said system comprising a layer of a cured marine resistant epoxy composition applied uncured onto a select surface portion of the item, a cladding formed of rigid individual sections applied juxtaposed to each other against the epoxy when uncured for substantially encapsulating said layer collectively and clamping means operative when said epoxy is uncured to secure the cladding sections in a compressive relation against said epoxy with a level of compressive force sufficient to cause a quantity of the uncured epoxy to exude past said cladding.
A method of applying corrosion protection to a corrosion susceptible item for marine use comprising the steps
- a) providing a predetermined quantity of uncured epoxy composition sufficient to envelop said item;
- b) providing individual sections of a rigid cladding of collective size sufficient to encapsulate said epoxy composition on said item:
- c) applying said uncured epoxy onto at least a select surface of said item to be protected;
- d) applying said cladding sections juxtaposed to each other in a substantially encapsulating relation against the applied epoxy on said select surface;
- e) providing clamping means about said applied cladding;
- f) operating said clamping means so as to compress the uncured epoxy between the cladding and said select surface thereat with a level of compressive force sufficient to cause a quantity of the unglued epoxy to exude past said cladding sections;
- and
- g) permitting said epoxy to cure to a predetermined hardness.
Dependencies are inferred from the claim text.