Coded Hyperbaric Welding Services (Dry & Wet)

Development & Approval of Welding Procedures

(Dry & Wet)

NDT Inspections (Dry & Wet environment)

Underwater Welder Training for Commercial Divers

(the WeldCraft-Pro)

Manufacturing & Supply of Diving and Welding

equipment

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Client’s Evaluations

How We WorkMAREX is renowned for its ability to succeed with all missions entrusted to its staff:Reliability, Timeliness of work, Quality of work Safety of its own teams and its clients,teams Confidentiality. In MAREX, we take Client's needs seriously. That's why, beforewe start operations on site, we proceed to a demonstration of the work plan and ofthe result we will produce, even more so, when projects involve Welding & N.D.T.Inspections.

Specializing in Custom-Made SolutionsWe cover every phase : Identification of needs, Feasibility studies, Virtual 3D modellingand animation, Turnkey construction, Maintenance. Depending on projectrequirements, we can design and manufacture any construction required which canmake the course of the project successful.

QHSEOur target is the commitment to Health and Safety and Quality Management. Ongoingreviews, internal auditing, inspection, communication, and training of personnelcombine to ensure that safety and quality standards are monitored and continuouslyimproved. This requirement is in place to effectively manage the evolving challengesprovided by the global marine construction working environment. MAREX is supportedby a multi-skilled and professional workforce, equipped to provide turnkey solutionsfor maritime and inland over or under water construction projects.

ABS Quality Evaluation – ISO 9001Marex is approved for its management system by ABS for the following topics: Coded Hyperbaric Welding Services (Dry & Wet) Development & Approval of Welding Procedures Underwater Welder Training for Commercial Divers (the WeldCraft-Pro) Manufacturing & Supply of Diving and Welding Equipment

The Passion and Ambition for overcoming Major ChallengesMAREX has been meeting challenges for over 20 years, on the basis of a simple andprecise logic: To any problem raised by a client: - We find the solution - We design andproduce the solution - We implement the solution with highly professional teams thatfocus on safety and quality. Entrust your projects to MAREX; MAREX will take up thechallenge!

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Development and Approval of Welding Procedures

Marex Overseas and our MD George Maroudas participated in Underwater Wet

Welding Trials on Examination and Testing of Barracuda Gold Electrodes and specific

Evaluation of mechanical & weld quality properties in Accordance with AWS

D3.6:2010, Class A (Comparable properties and testing requirements with above

water welding)

The purpose of this investigation was to identify if underwater wet-welding

could now be performed, using the electrode Barracuda Gold, to deliver weld metal

quality in accordance with AWS D3.6M: 2010 Class ‘A’, therefore moving this process

out of temporary to permanent repair methodologies.

Under the AWS D3.6M underwater welding specification Class ‘A’ welds are intended

to be suitable for applications and design stresses that are comparable to their

conventional surface welding counterparts, by virtue of specifying comparable

properties and testing requirements.

For the purposes of these trails, welding was conducted at -3M water depth

in a freshwater training tank. Water temperature was 7C⁰ and visibility was

good. All welding was performed by Mr. George Maroudas.

From the evidence supported in the report (More info: www.specialwelds.com)

utilising careful control for welding operations and attention to detail, the evidence

from the NDT and destructive examination and testing has shown that class A wet

welds has been achieved.

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Underwater Welder Training

This course is fully certified by EAL, part of SEMTA – Sector Skills Council for Science,

Engineering and Manufacturing Technologies, the UK’s leading awarding body for

engineering qualifications. The course is also recognized by IMarEST – The Institute of

Marine Engineering, Science & Technology. The WeldCraft-Pro is delivered, under

license, through approved diver training schools. The training is based on an 80 hour

programme, split over two phases, covering both dry and wet welding and is open to

both non-welders and welders alike. All training follows the International Institute of

Welding (IIW) and European Welding Federation (EWF) syllabus 570-01 for fillet

welder – plate and cover the following topics;

Safe underwater welding

Introduction to MMAWelding plant & equipment

Underwater welding techniques

Preparing to weld

Electrode & weld terminology

Basic Weldability & commonweld defects

Monitoring & record welding operations

QA/QC andwelding procedures

Join carbon steel plates using standard techniques

Training is designed to provide commercial divers with the competencies in both theoryand practice of underwater manual metal arc (MMA) welding. Welder approvalqualifications are conducted is accordance with the following welding standards: BSENISO 15618-1, AWS D3.6-2010 and BS 4872. w

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