Abstract: An electro-mechanical connection is of the type of a “hot stab” connection. The connection also includes a jagged surface in the form of a scraper, which is capable of cutting through a deposit that could otherwise excessively increase the electrical resistance across the connection. The connection can be used underwater and installed by a diver or ROV, for example, for connecting cathodic protection to a subsea structure.

Abstract: A hydraulic excavation apparatus may be used for providing access to a pipeline buried under shallow water or in wetland locations, for example, in order to install an electro-mechanical clamp on the pipeline. This clamp can then be used for connecting externals anodes to the pipeline, for monitoring the level of corrosion protection of the pipeline, or for any other purpose.

Abstract: Apparatus 10 discloses a subsea monitoring station using solar cells to energize at least one electronic circuit incorporating at least one node having a determinable circuit value or other parameter test station providing a full time voltage readout, powered by the lights 16 on an ROV/AUV 14 or diver's lamp. An additional element of the apparatus is a subsea cathodic protection test station 18 incorporating a plurality of banks of solar cells 28 powering DC voltage test circuits having some form of parameter display, such as voltmeter readout 30, deriving voltage from ambient light 16 provided by outside sources, such as an ROV 14 or diver's lamp. The apparatus's cathodic protection test system includes four integral voltmeters 30 of which are powered with independent solar panels 28. The solar panels 28 are powered by artificial light 16 delivered by diver or submersible vehicle 14.

Abstract: A cathodic protection system for protecting an underwater structure includes a plurality of blocks which are capable of conforming to various structures. Each of the blocks include: a flexible wire rope, the rope constructed and arranged to pass through the center of each block in two directions, and embedded therein to fasten the blocks to each other by rows and columns; a sacrificial anode embedded in at least one of the blocks, and electrically attached inside the block to the flexible wire rope; and a connecting system electrically attached to the wire rope and to the underwater structure. Each block has a non-abrasive pad attached to it. The pad provides spacing between the block and the underwater structure. The system includes means for collecting performance data from the system. The sacrificial anode is made of a composition taken from the group comprising alloys of: zinc, aluminum, or magnesium.

Abstract: A corrosion inhibiting liner for a pipe support includes a flexible mat containing spaced-apart slots; and a cylindrically-curved buffer in tight engagement with the mat in each slot, wherein the cylindrically-curved buffer is made of a non-metallic, non-elastomer material that can withstand compressive strength of at least 8,000 psi, and has a friction coefficient less than 0.35. The slots are dove-tail slots, and the greatest thickness of the mat combined with a buffer is less than three-fourths of an inch. The length of each buffer is substantially the same, and is within the range of 1.5 inch to 24 inches.

Abstract: A cathodic protection system for protecting an underwater structure includes a plurality of blocks which are capable of conforming to various structures. Each of the blocks include: a flexible wire rope, the rope constructed and arranged to pass through the center of each block in two directions, and embedded therein to fasten the blocks to each other by rows and columns; a sacrificial anode embedded in at least one of the blocks, and electrically attached inside the block to the flexible wire rope; and a connecting system electrically attached to the wire rope and to the underwater structure. Each block has a non-abrasive pad attached to it. The pad provides spacing between the block and the underwater structure. The system includes means for collecting performance data from the system. The sacrificial anode is made of a composition taken from the group comprising alloys of: zinc, aluminum, or magnesium.

Abstract: A corrosion inhibiting liner for a pipe support includes a flexible mat containing spaced-apart slots; and a cylindrically-curved buffer in tight engagement with the mat in each slot, wherein the cylindrically-curved buffer is made of a non-metallic, non-elastomer material that can withstand compressive strength of at least 8,000 psi, and has a friction coefficient less than 0.35. The slots are dove-tail slots, and the greatest thickness of the mat combined with a buffer is less than three-fourths of an inch. The length of each buffer is substantially the same, and is within the range of 1.5 inch to 24 inches.