Applications and Advantages in Tank Fabrication and Maintenance
In the fabrication of storage tanks, as in most other welding applications, there are two crucial processes that storage tank fabricators must carry out to ensure the final quality and durability of the tanks. They are weld preheating and post-weld heat treatment.
Preheating involves heating the material to be welded to a particular temperature before welding. This process reduces shrinkage by minimizing the temperature between the arc and the base material. It also removes moisture, lowers hydrogen, and slows the weld cooling rate. These reduce the risk of cracking, brittle welds, and failure of the welds. Preheating is crucial for storage tanks as they are to withstand high pressures during operation.
The oil and gas industry plays a very important role in the global energy supply as well as the world economy. Many technologies are crucial to the existence and functioning of this multi-billion dollar industry. One of these is welding.
The oil and gas industry utilizes various highly complex infrastructure such as rigs, pipelines, platforms, plants, and facilities. The majority of these infrastructures are created using welding technologies. Welding is critical in oil and gas operations both for the construction of new projects and for the maintenance of existing facilities.
Applications of Welding in Oil and Gas
The oil and gas industry is divided into three major stages of operation. These, which can be referred to as sectors, are Upstream, Midstream, and Downstream. Welding is widely used across all these sectors and its applications can be classified accordingly.
Whether you’re working in the petrochemical, manufacturing or food and beverage industry, plant shutdowns are inevitable. Plant maintenance is vital to optimizing peak performance of a facility to ensure profitability, safety and regulatory compliance.
From a routine plant shutdown and maintenance period, metrics such as quality, schedule and cost can be measured and planned in advance. However, exceptions such as the global outbreak of COVID-19 global pandemic can pave the way for unexpected maintenance opportunities. In a move to contain the virus spread, companies close up shop temporarily to follow government mandates, protect their employees and take advantage of the opportunity to perform deep-cleaning routines using technologies like dry ice blasting on their factories simultaneously.
Pre-weld and post-weld heat treating is critical for many welding operations. Without proper thermal manipulation, welds and heat affected zones can have mechanical properties that are undesirable. Worse yet, inadequate heat treatment can result in cracks and devastating weld failures. While temperature and time are the primary concerns when heat treating a weld, the heating method should also be considered diligently when selecting a process. Induction heating is one of the most popular types of heat treating methods, and rightfully so. The benefits of induction heating are many, and Red-D-Arc has the equipment you need to successfully implement an induction heat treating operation for your projects.
Inspection, Surface Prep and Non-destructive Testing
Are you in the oil & gas industry? Are you involved in non-destructive testing, inspection, or surface preparation? How about maintenance of pipelines, heat exchangers, or pressure vessels? If you deal with these or similar operations, proper cleaning of surfaces might well be a process you regularly undertake.
Cleaning Delicate Equipment Safely
What is the best way to clean surfaces of such equipment? While there is no one best way for every circumstance, dry ice cleaning is a state-of-the-art method that can save time and money. It uses recycled CO2 in the form of solid dry ice particles as the cleaning media. Dry ice is soft and non-abrasive to most surfaces and can thus be used around delicate components, including electronics, that would be damaged by water or solvents. As the blasting equipment is portable it can be used in place, thus minimizing disassembly and other preparation time. Lastly, dry ice turns to a gas after contact with the surface being cleaned — cleanup time is rock bottom minimum, there is nothing to dispose of, contamination of moving parts is not an issue.
To begin, let’s establish what exactly we’re talking about when we say “biodiesel.” ASTM (American Society for Testing and Materials) has published a standard, D6751-07b, that defines what biodiesel is. We’re not talking about used cooking grease, or even commercially produced biodiesel, if it doesn’t meet this standard.
Also, the word “biodiesel” is often used to describe what is actually a blend of biodiesel and diesel fuel. (The diesel fuel sold for on-road use in the U.S. is Ultra Low Sulfur Diesel fuel, or ULSD.) The term “BX” designates the blend ratio, where “X” stands for the percentage of biodiesel in the blend. So B100 means 100%, or pure, biodiesel, while B20 means 20% biodiesel mixed with 80% ULSD.
Additionally, this article doesn’t address OEM recommendations or warranty limitations. We’re simply looking at the question from a mechanical standpoint.
So now, with all that out of the way, what’s the bottom line?
Red-D-Arc was featured in the December/January issue of Tank Storage Magazine in an editorial titled “Rental welding equipment for storage tank fabricators”. Tank Storage Magazine is an industry leading publication, reporting exclusively on the bulk liquid storage tank and terminal sector.
The storage tank construction industry is highly competitive and fabricators gain a significant advantage by leveraging Red-D-Arc’s rental fleet of automatic tank welding equipment. Red-D-Arc supplies specialized automatic storage tank welding equipment to companies in the tank fabrication industry for projects all over the world.
Along with our specialized tank welding equipment comes a highly knowledgeable and experienced team of Red-D-Arc technicians. Sayer Hendricks – storage tank welding equipment specialist at Red-D-Arc is quoted in the article: “A fabrication company without prior knowledge of the equipment, is able to rent a turn-key tank welding automation system and increase their welding productivity by 40-50%. With on-site training, service and support, our customers are up and running quickly and making 100% x-ray quality welds without fail”
The full article is available here: Rental welding equipment for storage tank fabricators
By guest Blogger Katarzyna K.
Katarzyna has an Msc in Materials Science and has worked in the oil and gas industry in jobs related to hydraulics, welding and the retrofitting of oil rigs.
Stainless steel is used extensively in the petrochemical industry due to its high resistance to severe conditions. When welding inox steels, the smallest details matter and have an impact on weld quality. The following are some tips for stainless steel pipe welding based on my oil rig repair experience:
During an oil rig repair project that involved 2205 duplex stainless steel pipe TIG welding, we could not achieve the required weld properties. Despite using the recommended filler metal with higher nickel content, compared to the base metal, and controlling the interpass temperature, the weld tensile strength was still too low. In order to reach the required weld quality we dug deeper and found a solution – (more…)
An oilfield equipment and vessel manufacturer in the United Arab Emirates approached Red-D-Arc for assistance with a large project. It was awarded to them at the last minute and was not their primary area of expertise. The requirement was to manufacture 25 large tanks with a timeframe of only one year. Each of the tanks was to be 5 meters in diameter by 25 meters long, manufactured using 16 millimeter thick material at a weight of approximately 45 tonnes.
The experienced Red-D-Arc Weld Automation team was able to immediately address all of the customer’s challenges. While other suppliers where insistent that the customer purchase the equipment, Red-D-Arc determined that long term rental would be their best option. This would avoid the time consuming process of acquiring CAPEX approval to purchase such a large amount of equipment and would further increase the profitability of the project. The manufacturer also had questions on how to avoid ovality and transverse movement of the sub-assemblies. Red-D-Arc experts were on-hand to provide the right advice and the right equipment to address these challenges.
The rental equipment included:
• 6x 10 tonne turning roll sets
• 10x 60 tonne drive rolls
• 47x 30 tonne and 60 tonne idler rolls
• 7x submerged arc packages with LT7 tractors and DC600 power sources
Red-D-Arc worked very closely with the company to ensure their success, providing comprehensive training and on-site assistance. After the successful completion of this project the company has become recognized in their market and are receiving new orders from similar customers in the industry. Furthermore, they anticipate being awarded “phase 2” of this project which is scheduled to begin in 2018.
Tank Fabrication Equipment
Red-D-Arc carries a variety of equipment useful for the construction and maintenance of storage tanks including:
Red-D-Arc has launched an exciting new product designed to increase the productivity and efficiency of pipe welding. The Red-D-Arc Process Pipe Cell with oscillating welding torch is a dual wire feeder, multi-process welding cell.
The system is easy to set up and operate and reduces weld operator errors, reduces welding time, and increases deposition rates, productivity and arc-on time.
A variety of welding power sources and wire feeders can be used with the system including Miller RMD PipeWorx 400 and Lincoln STT S350, S500 and S700 Power Wave systems, with all welding functions controlled via a remote interface.
Root passes can be performed manually with solid wire using either RMD or STT technology (instead of manual GTAW or SMAW) followed up by hot passes and cap passes either solid-wire or flux-cored) with the jammer-style weld oscillator.
Choose the welding positioner, welding chuck, turning roll set or headstock to suit your specific needs. All positioning functions including welding head manipulator, oscillator, welding positioner and turning rolls are managed via a single control.
Contact a Red-D-Arc Weld Automation Expert to learn more or request a demo: 1-866-733-3272 | Contact Sales
See more welding turntables, pipe welders and pipe welding positioners
Red-D-Arc supplied equipment and installation services for a new weld overlay cladding facility in the west of Scotland for one of the leading global distributors of raw material for wellhead and completion equipment to the oil and gas industry. After discussions with the client, Red-D-Arc designed a solution to meet the specific needs of their project. It was determined that the new cladding facility would consist of six Compact Cladding Cells and four Butt Welding Stations.
“We regularly develop specialized solutions alongside our customers…”
Layout of the facility began with our experienced engineers installing the six Red-D-Arc Compact Cladding Cells. Each Compact Cladding Cell consists of an automated system controller, 2m x 1m cross slide, 3 tonne turntable with built-in slip ring for preheating, and a Miller power source. Next, the four Red-D-Arc Butt Welding Stations were installed. Each station consists of an automated system controller; 3m x 3m travelling column and boom; 300mm x 300mm oscillation slide; 3 tonne headstock, 2 travelling support pipe idlers and a Miller power source.
The Red-D-Arc Weld Automation team has extensive experience across diverse sectors of industry. We regularly provide weld process recommendations and develop specialized solutions alongside our customers to address their unique challenges. Red-D-Arc Weld Automation Systems are designed for optimized reliability and productivity, and come complete with installation, onsite training, services and support.
View our entire range of pipe welding positioners
As one of the leading power generation rental and service providers in the southwest U.S. D&D Power, a Red-D-Arc company, has the capability to keep your oilfield power generation equipment running. With over 40 service technicians covering the shale plays of Texas, Oklahoma and southeast New Mexico, we offer critical response service 24 hours a day, 7 days a week, 365 days a year. We usually have equipment back up and running in under 2 hours.
D&D Power offers rental diesel, natural gas and hybrid bi-fuel generators along with generator paralleling systems and portable light towers. Visit the Oilfield Services web page to learn more.
Read more articles on diesel electric generators
Earlier this year, Red-D-Arc delivered several of our MIG/MAG 4-pak and 6-pak multi-operator welding packages to Heerema Fabrication (HFG) for their yards in Zwijndrecht and Flushing, Holland. HFG manufactures complex steel structures for use in the offshore oil and gas industry.
In addition to maintaining high-quality welding standards, HFG was able to increase both worker productivity and safety by employing Red-D-Arc’s multi-operator packs for the welding processes at their fabrication yards. The packs include six welding power sources and wire feeders with gas lines to accommodate up to six individual welders – and each welder has his own 115VAC power supply as well as an airline that provides filtered breathing air to the welder’s helmet. All input power, shielding-gas and breathing-air connections are made via single connections in the pak’s enclosure in order to simplify hook up as well as enhance portability.
“With the multi-packs our operators can get set up faster and start welding immediately. The time savings and increased efficiency easily covers the cost of the packs.”
After receiving their initial order of 6-paks, HFG placed a second order for 4-paks, having recognized the benefits of the system.
Red-D-Arc 4-Pak and 6-Pak MIG/MAG Multi-Operator Welding Packages are available for rent, lease or purchase. Contact Sales to learn more.
Read more on welding efficiency
Red-D-Arc is pleased to announce that on December 21st , 2012 D&D Power, LLC, a Texas-based equipment rental and services business, was acquired by Red-D-Arc Welderentals. D&D Power sells and rents electric power generators and light towers to companies engaged in the oil and gas exploration and production (E&P) industries in Texas and New Mexico via their facilities in Decatur, La Vernia, and Big Lake, Texas; as well as a facility in Jal, New Mexico. In addition, D&D has earned a strong reputation as a premier provider of repair and maintenance services to generator fleet operators in these states on a 24/7/365 basis. This acquisition, when combined with Red-D-Arc’s welder rental equipment business and Airgas On-Site Safety Services, and complemented by the full breadth of Airgas’ gases and hardgoods products, services, and expertise, will significantly enhance Airgas’ value proposition to customers in the oilfield services, construction, and other energy-related markets.