When a pressure vessel fails, the consequences reach far beyond the equipment itself. They reach your team, your facility, your schedule, and your liability. ASME pressure vessel calculations are the engineering foundation on which everything else depends. At Boardman LLC, we have been delivering precision fabrication and engineering work since 1910. When you bring your vessel calculations or ASME pressure vessel re-rating needs to us, you are working with a team that treats code compliance as the floor, not the ceiling.
Getting the calculations right from the start protects you from costly corrections later. Boardman provides pressure vessel calculations aligned with ASME Section VIII, Divisions 1 and 2, covering the full range of engineering requirements your design demands.
Every calculation is documented and traceable, so your engineering team, your inspector, and your insurer all have what they need.
A vessel operating outside its rated conditions is not just a regulatory problem. It is a safety risk to your team and a liability risk to your organization.
Here is what proper ASME pressure vessel calculations protect you against:
The documentation you receive from Boardman is not produced to check a box. It is produced to protect your operation, your people, and your project.
Process conditions change and equipment ages. What your vessel was designed for five or ten years ago may no longer reflect what your operation needs today. ASME pressure vessel re-rating is the engineering process of formally evaluating and revising a vessel’s Maximum Allowable Working Pressure (MAWP), temperature rating, or both, based on current code standards, material data, and inspection findings.
Re-rating is not performed in isolation. Boardman works within the established framework that inspectors, jurisdictions, and insurance carriers require:
Some vessel conditions fall outside what standard formulas can address. Boardman’s technical capabilities extend into the complex evaluations that demanding applications require.
When vessel geometry, loading conditions, or stress distributions exceed the scope of standard code calculations, Finite Element Analysis provides the engineering rigor your situation demands. FEA is used for complex nozzle configurations, non-standard geometries, and high-consequence applications where conservative assumptions are not acceptable.
If your vessel has experienced corrosion, pitting, cracking, or other forms of degradation, a Fitness-for-Service assessment evaluates whether it can continue operating safely at its current or revised rating. FFS work is performed in accordance with API 579 and gives you a defensible engineering basis for continued operation rather than a replacement decision made under pressure.
Boardman utilizes industry-standard software for pressure vessel design and re-rating calculations, including COMPRESS and PV Elite. These tools produce code-compliant calculation packages accepted by authorized inspectors and jurisdictional authorities.
Since 1910, Boardman has built its reputation on stewardship, precision, and results that hold up to scrutiny. Our ASME certifications, first earned in 1952, reflect a standard of engineering discipline that has been maintained and reinforced across every generation of work since. When you work with Boardman, you are not working with a vendor managing volume. You are working with a partner who takes accountability for the outcome of your project.
Whether you need ASME pressure vessel calculations for a new design or a formal ASME pressure vessel re-rating package for in-service equipment, Boardman is ready to work through the details with you. Tell us your vessel specifics, your current conditions, and your timeline. We will give you a clear scope and a straight answer.
The right engineering partner answers your questions before you have to ask them twice. Here are the ones that matter most when evaluating pressure vessel calculations and re-rating services.
A re-rating is a formal engineering evaluation that revises a vessel’s Maximum Allowable Working Pressure (MAWP), temperature rating, or both. The process includes reviewing original design and construction records, assessing current inspection data, performing revised calculations against applicable ASME Section VIII standards, and producing a complete documentation package for the authorized inspector and jurisdictional authority. If the vessel has been altered, additional steps are required before the revised rating can be formally established. Boardman manages the entire process and keeps you informed at every stage.
FEA is not always required, but it becomes necessary when standard code formulas cannot adequately address a vessel’s geometry, loading conditions, or stress distribution. Common scenarios include non-standard nozzle configurations, irregular shell geometries, high-cycle fatigue applications, and cases where a conservative formula would result in unnecessary over-design or rejection. A jurisdictional authority or authorized inspector may also request FEA to support an unusual design or re-rating case.
Yes, in some cases. The answer depends on the original construction materials, the allowable stress values at the proposed temperature under the current applicable code edition, the current measured wall thickness relative to what is required under the new conditions, and the results of a current inspection. If the calculations and inspection support the revised conditions, a formal re-rating package can be prepared and submitted. Boardman will give you a direct assessment of what the engineering supports before any work begins.
Boardman provides pressure vessel engineering and fabrication services to the industries where compliance and precision carry the highest consequences:
Have a project in mind? Request a free quote today.
Boardman provides pressure vessel calculation, re-rating, and field engineering services across the central United States. Primary field service coverage includes Oklahoma, Texas, New Mexico, Colorado, Arkansas, Missouri, and Kansas. If your facility falls outside these areas, reach out directly. We will tell you honestly what we can accommodate and work with you to find the right path forward.