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Logan Diving & Salvage

Contact & Details:

Country United States
Phone 904.731.0000
Website www.logandiving.com/
Description

Pipeline Inspection and Repair

Logan Diving & Salvage inspects pipelines for signs of exposure, suspension, stress corrosion, coating failures, cracks and more. Our divers have the experience, equipment and knowledge to assess and repair your subaqueous pipeline. Logan Divers can section your failed pipeline, install new pipe spool piece, and complete with custom fabricated clamps and closures. We also provide Cathodic protection survey and inspection via underwater potential readings collected complete with analysis.

Cable and Pipeline Location

We provide electronic and physical pipeline and cable location for anticipated construction activities, barge mooring, and dredging operations. Logan Diving & Salvage will also help locate cable faults and make the appropriate repairs. Our divers can jet up, provide barge access for splicing teams, then jet or plow the cable back to the required burial depth.

Substructure Inspection

Logan Diving & Salvage inspects a wide variety of marine structures, including marine towers, bridges, tanker docks, offshore platforms, piers, port bulkheads, navigation towers, and wharfs. We include a comprehensive written report and new ACAD drawings in plan and profile to our client’s specifications. We provide 4 Levels of Inspection intensity based on our clients’ needs, goals and objectives.

Logan Diving & Salvage Substructure Inspection Approach:

Level I Survey is performed to identify indications of obvious overloading, design deficiencies and any use which is inconsistent with the platforms/structures original purpose. Level I Survey includes a general examination of accessible structural members in the splash zone, and above water, documenting existing obvious defects and deficiencies.

Level II Survey consists of general underwater visual inspection by divers to document the following: excessive corrosion, structural member fatigue damage, percent wasted to structural members, Cathodic Protection system condition, coating condition, accidental or environmental overloading, scour/seafloor instability, etc.

Level III Survey consists of an underwater visual inspection of preselected areas and/or based on results of the Level II Survey, areas of known or suspected damage. Such areas should be sufficiently cleaned of marine growth to permit thorough inspection. Pre-selection of areas to be surveyed should be based on an engineering evaluation of areas particularly susceptible to structural damage. Detection of structural damage during a Level III Survey should be the basis for a Level IV Survey.

A Level IV Survey consists of underwater ultrasonic nondestructive testing (steel structure’s) coring/soundings (timber structures) of preselected areas and/or, based on results of the Level III Survey, areas of known or suspected damage. Level IV Survey also includes detailed inspection and measurement of damaged areas as well as underwater digital still / video documentation.

Towers/Platforms

Original substructures often are not capable of handling new equipment and increased loads. Our engineers have a proven track record of solving these kinds of challenges. Substructure modifications can usually be initiated and completed without disruption to the current ongoing operation.

Docks/Piers/Bulkheads

Logan Diving & Salvage’s divers have been involved in traditional harbor work for more than 70 years.

Providing quality inspection of dock and pier substructures requires a comprehensive knowledge of the individual components and sequence of construction. Having been involved in the construction of heavy industrial bridges, piers and docks over the years has given Logan Diving & Salvage the experience to provide quality inspection services that count.

Commercial divers from Logan Diving & Salvage have the experience gained through actual construction projects to accurately inspect and document findings of your substructures.

Inspections typically consist of the following:

Excessive corrosion    Accidental or environmental overloading    Scour, sea bed instability    Structural fatigue    Construction deficiencies    Concrete spalls    Debris    Excessive marine growth    Pile type and existing condition    Substructure to superstructure interface    Cap beam type and condition    Bracing baffle

Marine Construction:

Logan Diving & Salvage’s divers understand steel, timber, concrete, and aluminum in an underwater environment. Dive teams routinely support heavy marine construction projects in the US and Caribbean. Underwater burning is available for mild steel, stainless steel, aluminum, concrete and cast iron. For underwater bridge construction, we offer cement and grout placements for footers, seal pours, columns, piers and standard forms. Logan Diving & Salvage supports all industrial heavy marine construction projects as required. All phases of dock, pier and bulkhead construction are executed by Logan Diving & Salvage.

Some typical examples of the types of underwater construction and maintenance performed are as follows:

  • Underwater Burning
  • Underwater Welding
  • Wire Sawing
  • Demolition
  • Pile jacketing for corrosion
  • Pile jacketing (structural)
  • Sheet pile patching repairs
  • Concrete cap spall repairs
  • Concrete cap crack epoxy injection
  • Fender system repairs and replacement
  • Cross bracing repairs and replacement
  • Epoxy coatings

Logan Diving & Salvage can construct, inspect, maintain, repair and upgrade your marine waterfront structures.

SHIPS HUSBANDERY:

Recognized by the American Bureau of Shipping , Det Norske Veritas (DNV-GL), Lloyd’s Register (LR), Nippon Kaiji Kyokai (NKK), and Bureau Veritas (BV), Logan Diving & Salvage is certified as an “In Water External Hull Specialist,” for In Water Survey / UWILD Inspections. Logan Diving & Salvage supports class inspections, insurance inspections, damage assessments, grounding inspections, wheel jobs, cofferdam installation, terrorist threat inspections, drug smuggling inspections and sea chest/propeller cleanings. Logan Diving & Salvage provides services which Class Surveyors rely on to make decisions affecting classification or statutory surveys.

MARINE SALVAGE:

USGC BASIC ORDER AGREEMENT (BOA) holder for marine casualties and pollution response 7th District. Logan Diving & Salvage has raised numerous vessels, tugs, dredges, barges, aircraft, breasting dolphins and structures—operating on emergency response or negotiated “no cure no pay” basis. Traditional methods include dead lift, dewatering, compressed air and demolition/sectioning. We are ready to serve your needs whenever disaster strikes. Prepositioned equipment packages Jacksonville, Florida and San Juan, Puerto Rico.

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