Plant Turnaround Services

Dunn Heat Exchangers isn’t just a company that offers services such as cleaning, repair and fabrication services only. What sets us apart from our competition is the fact we offer plant turnaround services as well.

With this type of service, your plant or refinery can save a lot of money and time for maintenance of heat exchangers. Furthermore, the company is able to complete all turnaround services within just 24 hours. Our highly skilled craftsmen work 24/7 to finish all projects successfully.

Dunn Heat Exchangers Inc. provides the most extensive range of equipment cleaning service. For instance, up to 16 pieces of equipment that weigh up to 100,000 pounds can simultaneously undergo different cleaning services like hydroblasting, waterlancing, grit blasting, or thermal decomposition.

Plant turnaround services include the following stages:

• Evaluation of the problem to help engineers identify the most urgent parts in order to prioritize the execution
• Restructuring stage –looking for the most effective solutions to various problems (to get maximum gain for minimum cost)
• Stabilization stage –incorporation of solutions to fix the problem
• Revitalization – finalizing the project and delivering the equipment to plant or industry.

After we’ve seen all the stages that plant turnaround services include, let’s see what services our company offers to you:

• Pressure and vessel cleaning of heat exchangers
• Repair
• Modification
• Fabrication.

The most popular or frequently sought after turnaround service is, definitely, cleaning of heat exchangers. Dunn Heat Exchangers Inc. performs cleaning in the biggest and most modern facility in the United States. Our highly skilled craftsmen use equipment of the latest technology to perform this task and incorporate the following techniques:

• Hydroblast and waterlancing –cleaning without abrasives or chemicals. Hydroblast uses water power to remove fouling and waterlance uses steam. Furthermore, these methods are the most commonly used methods of heat exchangers cleaning.
• Grit blast cleaning – refers to cleaning with abrasives. This method is performed in three enclosed grit blast houses.
• Chemical cleaning – is usage of powerful chemicals in order to remove fouling.

Plant turnaround services also include transportation of the equipment to your plant or refinery. Transportation is a demanding task as this equipment is delicate and it should be made sure nothing gets damaged on the road. That’s why, our company transports your equipment in the tractor-trailers that are specially designed, enclosed, and covered which guarantees the safety of heat exchangers during transport. Feel free to contact us in order to get more info about turnaround services. 

Furthermore, you can schedule plant tour or lunch and learn sessions to find out more about heat exchangers and their maintenance. 

Shell And Tube Heat Exchangers

Shell and tube heat exchangers are the types of heat exchanger designs. Also, it’s the most frequent type of heat exchanger in refineries and other large chemical processes because it’s suited for high-pressure applications.

Due to constant work, shell and tube heatexchangers can accumulate fouling. Fouling in heat exchangers leads to numerous problems like reduced thermal activity, increased temperature on the hot side, decreased hot flux, and decreased temperature on the cold side; induced corrosion etc. All these problems can affect the performance of heat exchangers and overall plant or refinery.

The best way to prevent these problems to occurring in heat exchangers in your plant or refinery, they have to be cleaned thoroughly. Cleaning requires implementation of different methods to remove unwanted materials.

Dunn Heat Exchangers provides five cleaning methods for shell and tube heat exchangers cleaning methods such as:

Hydroblast and waterlance cleaning

They are the most frequently used cleaning methods. Hydroblasting is defined as a method which relies solely on the energy of water. The primary aim of water is to strike the fouled process equipment in order to achieve effect of cleaning. On the other hand, waterlancing is a technique where steam generators are used to clean the surface. Both methods don’t include usage of abrasive or chemical substances. Hydroblasting and waterlancing should be conducted with high-quality equipment which includes blast nozzles that are able to flow heated water to optimum GPM (Gallon per Minute) and PSI (Pounds per Square Inch) to provide adequate temperatures essential for cleaning of fouled heat exchangers. It’s worth to mention that our company owns the biggest, most-modern, and best-equipped heat exchanger cleaning facility in the country.

Grit blasting cleaning

This method is conducted by using steam of abrasive materials to strike the surface in order to eliminate the accumulated fouling. Abrasive materials vary and include walnut shells, silicon carbide, emery particles etc. Grit blasting cleaning is processed in enclosed grit houses and cleans shell and tube heat exchangers thoroughly.

Chemical cleaning

It incorporates the implementation of chemical components for removing deposits. Some of the processes of chemical cleaning include cleaning with alkali, cleaning with acid, protecting metal surfaces with alkali (to prevent corrosion), and rinsing.

Bake-Out/Pyrolytic Cleaning Process

It’s the process where heat is used to remove fouling. It thermally decomposes any residue and is safe for the fouled process equipment. It includes placing the heat exchanger in the vacuum chamber where it’s heated to remove fouling.

Decommissioning

The method is mostly performed on fouled equipment that will be returned to service and usually includes other methods of equipment cleaning as well, such as bake-out process.

Due to the best heat exchanger cleaning facility in the US, knowledgeable staff who incorporate various methods to get things done, and high-quality equipment, Dunn Heat Exchangers Inc. should be your first choice for cleaning of shell and tube heat exchangers.

For all questions or inquiries, feel free to contact us.

Know About Decommissioning Contractor Services

Decommissioning intends to securely expel an office or site from administration by devastation and destroying and decrease lingering radioactivity to a level that allows arrival of the property and end of the permit.

Some of the energy plant decommissioning administrations incorporate the devastation of whole power plants and particular disassembling and apparatus of force house gear including turbines, turbine generators, turbine rotor and blading, generators, static exciters, recurrence changers, heat exchangers, transformers and other related electrical and mechanical supplies.

Atomic steam and coal power plant decommissioning services:

1.       Total Power Plant Decommissioning

2.      Turbine Generator Dismantling and Removal

3.      Power Plant Stack Demolition and Dismantling

4.      Industrial Rigging and Removal of Power Plant Equipment

5.      Plant Machinery and Equipment Rigging and Removal

6.  All decommissioning, gear and disassembling work is carried out as per all wellbeing standards and regulations.

Apparatus and Equipment Moving Services

All Industrial Services gives a complete turn-key administration for each phase of modern and business plant and gear migrations. Our administrations include:

1.       Dismantlement and Relocation Plan Development

2.      Machinery Installation and Alignment

3.      Match Marking

4.      Heavy Rigging of All Types of Equipment and Machinery

5.      Entire Plant and Process Line Relocations

6.      Machinery Movers and Erector Services

7.      Heavy Hauling and Warehousing

8.     Equipment and Machinery Dismantlement and Salvage

Some industry can rapidly, flawlessly and securely handle your movement venture through and through. We be able to move hardware and supplies on a worldwide premise.

Devastation, Rigging and Plant & Machinery Moving Contractors Services

All Industrial Services is a Service-Disabled Veteran-Owned Small Business (SDVOSB) gaining practical experience in building annihilation, disassembling and apparatus builder administrations. We have been doing business for more than 75 years giving specific contracting administrations all through the United States.

Way to select efficient decommissioning steel pipe services:

Make a go at looking you. This administration is all around! Anyplace you turn or look, you will perceive some manifestation of structure or strategies for channel that this ought to being used for. What's more that is also the funnel that may be "through sight, far from psyche" this truly is filling its need under the ground.

                                  Regardless of in the event that its reconditioned utilized channel that was taken up from the beginning being decommissioned, new surplus pipe that was remaining from an undertaking or plant moving, factory reject pipe that has been minimized because of anomalies or fizzled testing or a just took the ribbon off new prime steel funnel item finish with Mill Test Reports to MTR'S, there is a spot or utilization for it in our reality.