Automatic Welding CapabilitiesMcDermott

McDermott is meeting the growing demand

for ultra- and deepwater pipeline installation while

continuing to serve shallow water pipelay projects.

Our welding technology, capabilities and

proven pipelay performance is world-class.

Research and development is lead at our

Automatic Welding facilities in Batam, Indonesia

and the United Arab Emirates.

Developing better ways to weld is not just

about the latest machinery, it is also about

improving all aspects of the job – from material

flow to welder competency, shift patterns,

safety, training, quality standards and means

of repair. By focusing on the entire process,

identifying issues and sharing knowledge, we

continuously improve our welding practices,

becoming safer, more effective and more efficient.

Welds made with our automatic welding

systems fulfill the most demanding industry

requirements for sour service, Corrosion

Resistant Alloys (CRA), Steel Catenary Risers

(SCR) and Pipe-in-Pipe applications, and are

proven to meet stringent criteria with automatic

ultrasonic testing or digital radiography during

pipelay operations. Incorporating the latest

in cutting-edge PowerWave® technology,

we have achieved significant and patented

improvements in arc control, start-stop points

and diagnostic tools.

Our leading-edge automatic welding

technology, “JBBS,” is utilized on conventional

pipelay projects and across our spoolbases,

supporting pipeline installations worldwide.

While our latest technology raises work

quality levels, it’s the people that apply the

technology who are the key to of our successful

lay rates and low weld repairs.

PRECISION WELDING, PROVEN PERFORMANCE

Our state-of-the-art welding system is a modified version of the Vermaat Technics Veraweld system. It incor-porates the latest developments in pipeline welding technology including Lincoln Electric PowerWave power supplies.

The system: • Single-torch or dual-torch welding system• Automatic control of welding parameters • Produces repeatable, high quality welds • Programmable parameters can be changed as a function of radial position• Through-arc tracking and height control• Exceptional mechanical properties• Low repair rates• High production rates

Welding Processes: • Pulsed Gas Metal Arc Welding (GMAW−P) • Short Circuit Gas Metal Arc Welding (GMAW-SC) • Surface Tension Transfer mode (GMAW-STT)

Materials: • Pipe diameters from 6” to 48”• Pipe wall thicknesses up to 45 mm• Carbon steel up to grade X80 • Corrosion Resistant Alloy (CRA), 316 & 825

Pipelay Application: • S-Lay • J-Lay• Double-Jointing• Multi-Jointing• Reeling

Results: • Over 300,000 production welds completed worldwide• Less than 2% overall repair rate• Less than 1% repair rate with Lincoln PowerWave equipment

The information contained herein is provided for general information purposes only and is not intended or to be construed as a warranty, an offer, or any representation of contractual or other legal responsibility. McDermott has a policy of continuous improvement of its products and services and reserves the right to change information including specifications and processes without notice.

150501—10© 2015 McDermott International, Inc. All Rights Reserved

TECHNOLOGY

JBBS - AUTOMATIC BUG AND BAND WELDING SYSTEM

MULTI-JOINT WELDING CAPABILITIES At the core of our Multi-Joint welding is the advanced technology of our JBBS welding system. JBBS technology combined with extensive experience produces timely and cost-efficient production while meeting the most stringent welding criteria. For tendon welding and pipe stalking, the PowerWave AC/DC technology was added for submerged arc welding passes.

McDermott has successfully completed multi-joint welding on deepwater projects with: • Quad-joint linepipe • Heavy wall thickness SCR systems • Fatigue sensitive flowlines • Tendon legs for Tension Leg Platforms (TLPs)

Using our spoolbase facilities, McDermott has successfully completed deepwater projects with: • Rigid reel line pipe • Pipe-in-pipe products • Stringent acceptance criteria flowlines

CONSISTENT, HIGH QUALITY WELDSOne of the primary measurements of success in offshore pipeline welding is the level of weld quality achieved on each project. The typical measurement of quality is the repair rate which equals the percentage of girth welds that contain any unacceptable defects that have to be repaired. In an industry that continues to demand more stringent welding acceptance criteria, especially for deepwater pipelay, the task of maintaining weld quality is difficult and improving weld quality is even harder.

Using the latest PowerWave technology with the JBBS welding system, we have significantly reduced overall repair rates. Zero weld repairs have been achieved across 14 offshore pipelines worldwide with varying diameters comprised of more than 12,000 welds. Zero defect pipelines have been executed for projects in Asia, Australia, the Middle East and Caspian Sea areas, spanning across five different vessels. Automated Ultrasonic Testing (AUT) inspection was carried out to some very stringent requirements, including provisions for lateral buckling and sour service.

This high quality standard also applies to the reeling segment of pipeline welding. The latest technology is being implemented at our spoolbases with repair rates averaging less than 1%.

APPLICATION

HISTORY OF IMPROVEMENT & PROVEN PERFORMANCE

Pipeline projects were supported with a mechanized welding system using the GMAW process in the “short-circuit transfer” mode.

The pulsed mode of Gas Metal Arc Welding (GMAW-P) dramatically improved overall fusion, especially sidewall fusion in the narrow bevels commonly used to reduce weld volume. The result was a major improvement in weld quality.

Lincoln Electric PowerWave technology was integrated into our welding systems to be used with the GMAW-P process. PowerWave equipment is extremely reliable in harsh environments, provides fast arc response for improved process control, and allows custom development of waveforms.

The lastest version of PowerWave technology was incorporated into our welding systems along with the next generation of JBBS software.

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McDermott International, Inc.

Leading provider of integrated engineering, procurement, construction and installation services for upstream field developments worldwide.

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