What Tanks and Vessels Are Used in Data Center Infrastructure?

Modern data centers rely on much more than servers, switchgear, and electrical systems. Behind every high-density, mission-critical facility is a network of mechanical, fuel, cooling, water, and process systems that help keep operations stable.

Tanks and vessels play an important role in that infrastructure. They support backup power, chilled water systems, water treatment, chemical storage, filtration, thermal management, and other core facility functions. As data center demand grows, these systems must be built to meet strict expectations for reliability, capacity, code compliance, and long-term performance.

For data center developers, engineers, EPCs, and facility teams, choosing the right tanks and vessels is not just a procurement decision. It is part of building infrastructure that can support uptime, cooling efficiency, backup power availability, and future expansion.

Why Tanks and Vessels Matter in Data Center Infrastructure

Data centers are designed around reliability. Tanks and vessels support several of those essential systems, including:

  • Backup generator fuel storage
  • Chilled water and thermal energy storage
  • Cooling and buffer tanks
  • Water treatment and filtration
  • Pressure vessels for mechanical and process systems
  • Modular fuel systems

While these systems may not always be the most visible part of a data center project, they are often critical to keeping the facility operating as designed.

1. Fuel Storage Tanks for Backup Power Systems

Backup power is one of the most important applications for tanks in data center infrastructure. Most large data centers use standby generators to support electrical continuity during outages, grid instability, or emergency conditions. Those generators require a dependable fuel supply.

Fuel storage tanks are used to store diesel or other generator fuels on-site. These systems may include bulk fuel storage tanks, day tanks, double wall tanks, pump sets, filtration equipment, piping, and distribution systems.

Common fuel storage equipment for data centers includes:

  • UL 142 aboveground fuel storage tanks
  • Double wall diesel storage tanks
  • Day tanks for generator support
  • Bulk fuel storage tanks
  • Integrated pump and filtration systems
  • Modular fueling skids
  • Fuel transfer piping and manifolds

For mission-critical facilities, fuel storage capacity is often tied to runtime requirements. Uptime Institute has noted that its Tier-defined data center guidance uses a 12-hour minimum fuel storage starting point for Tier-defined facilities at “N” load, depending on the site’s topology objective.

2. Chilled Water Tanks and Thermal Energy Storage Tanks

Cooling is one of the largest infrastructure demands inside a data center. As compute density increases, mechanical systems must manage continuous thermal loads while supporting redundancy, efficiency, and reliability.

Chilled water tanks, buffer tanks, and thermal energy storage tanks can help stabilize cooling systems by storing chilled water, reducing chiller cycling, supporting peak load demands, and providing additional cooling resilience.

Common cooling-related tanks and vessels include:

  • Chilled water buffer tanks
  • Thermal energy storage tanks
  • Expansion tanks
  • Hydronic system tanks
  • Refrigerant receiver vessels
  • Cooling water storage tanks

Thermal energy storage tanks are commonly discussed in relation to data center cooling strategies because they can help support chilled water availability and cooling system performance during high-demand periods. Data center infrastructure manufacturers also commonly identify fuel storage tanks, cooling water tanks, and process vessels as key equipment categories for data center projects.

3. Water Treatment Vessels and Process Tanks

Water plays an important role in many data center cooling systems, especially facilities that use cooling towers, evaporative cooling, or process water loops. Water treatment equipment helps maintain water quality, protect mechanical equipment, reduce scaling or corrosion, and support filtration or reuse programs.

Water treatment vessels and process tanks may be used for:

  • Cooling tower water treatment
  • Filtration systems
  • Chemical treatment
  • Process water storage
  • Reuse or reclaim water systems
  • PFAS treatment support
  • Industrial water conditioning

Common equipment includes:

Water infrastructure is becoming a more important consideration for data centers, especially in regions where water availability, sustainability, and cooling strategy are closely evaluated. Water-scarce or water-stressed regions may require operators to evaluate waterless cooling, heat reuse, or other design strategies that minimize water and energy use.

4. Pressure Vessels for Mechanical and Utility Systems

Pressure vessels are used across many industrial and mechanical systems, including data center infrastructure. These vessels are designed to contain liquids, gases, or process media under pressure and are often built to specific code requirements.

In data center applications, pressure vessels may support:

Common pressure vessel types may include:

  • ASME pressure vessels
  • Air receiver tanks
  • Refrigerant receivers
  • Expansion vessels
  • Filtration vessels
  • Stainless steel process vessels
  • Carbon steel pressure vessels

Because these systems often support critical mechanical operations, pressure vessel quality, testing, code compliance, and fabrication capabilities matter. Data center projects may require vessels designed to align with specific operating pressures, materials, coatings, connections, and site requirements.

5. Chemical Storage and Injection Tanks

Chemical storage and injection systems are commonly used in water treatment, cooling tower maintenance, filtration, and process water applications. These systems help manage water chemistry and protect mechanical systems from scaling, corrosion, biological growth, and other operational issues.

Chemical storage tanks for data centers may support:

Depending on the application, tanks may require specific materials, coatings, linings, fittings, secondary containment, or integration with pumps and controls.

6. Modular and Packaged Systems

Data center projects often operate on aggressive schedules with complex coordination between multiple trades, suppliers, and infrastructure systems. Modular and packaged systems can help streamline installation by integrating tanks, vessels, piping, manifolds, pumps, controls, and structural skids into a more complete equipment package.

Examples of modular or packaged systems for data center infrastructure may include:

For project teams, modular systems may reduce field assembly, improve quality control, and simplify installation by shifting more work into a controlled manufacturing environment.

Choosing the Right Tank and Vessel Manufacturer for Data Center Projects

Data center infrastructure projects require more than basic tank supply. They require a manufacturing partner that understands code requirements, schedule demands, quality documentation, and the importance of dependable equipment in mission-critical environments.

When selecting a tank and vessel manufacturer for data center infrastructure, project teams should consider:

  • Code and certification capabilities
  • Experience with storage tanks and pressure vessels
  • In-house engineering and drafting support to ensure ASME and API code compliance
  • Material options, including carbon steel and stainless steel
  • Coating, lining, blasting, and painting capabilities
  • Hydrostatic or pneumatic testing capabilities
  • Modular and packaged system experience
  • Ability to support built-to-order requirements
  • Manufacturing capacity and schedule reliability
  • Experience across fuel, water, cooling, and process applications

Petrosmith supports data center infrastructure with tanks, vessels, process equipment, modular systems, and packaged solutions built to meet project-specific requirements.

What Information Is Needed to Quote Data Center Tanks and Vessels?

To begin a project discussion, it is helpful to provide as much information as possible about the intended application and operating requirements.

Useful information may include:

  • Tank or vessel type
  • Intended service or stored media
  • Capacity or volume requirements
  • Design pressure and temperature
  • Material requirements
  • Applicable code or standard
  • Coating or lining requirements
  • Nozzle, fitting, and connection needs
  • Site layout or dimensional restrictions
  • Skid, platform, stair, or access requirements
  • Testing and documentation needs
  • Project timeline

Even if all details are not finalized, early conversations can help define the right equipment approach for the project.

Built-to-Order Tanks and Vessels for Data Center Infrastructure

Data center growth continues to place greater demand on the supporting infrastructure behind power, cooling, water, and mechanical systems. Tanks and vessels help support those systems by providing dependable fuel storage, cooling support, water treatment, chemical storage, pressure containment, and modular utility solutions.

Petrosmith manufactures built-to-order tanks, vessels, and packaged systems for data center infrastructure and other mission-critical markets. From backup generator fuel storage to water treatment vessels and chilled water tanks, our team supports the systems that help keep essential infrastructure operating.

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