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A U-Stamp is a certification mark issued by the National Board of Boiler and Pressure Vessel Inspectors (NBBPVI). It signifies that a pressure vessel has been manufactured and inspected in accordance with the rigorous standards outlined in the ASME® Boiler and Pressure Vessel Code (BPVC).
Before a pressure vessel ever goes into service, it must prove its integrity. One of the most critical steps in this process is hydrostatic testing—a time-tested method for ensuring that a vessel can safely handle its intended pressure load.
An API storage tank is a large, welded storage tank designed and constructed in accordance with standards developed by the American Petroleum Institute (API).
ASME boiler codes can sound intimidating, especially if you’re not an engineer by trade. The good news? You don’t need to memorize the Code to understand the basics. You just need a clear map.
In this must-watch episode, we break down the major updates in the 2025 edition of the ASME Boiler and Pressure Vessel Code (BPVC), released on July 1, 2025, and mandatory starting January 1, 2026. Whether you're a manufacturer, purchaser, designer, inspector, or anyone working with boilers and pressure vessels, these changes are game-changers for safety, compliance, and operations.
This article highlights the most common ASME Section I mistakes that trigger inspection red flags, why inspectors care about them, and how to avoid unnecessary pain at the worst possible time.
If the S-Stamp is the finish line, the Authorized Inspector (AI) is the gatekeeper holding the stopwatch. Before that stamp ever touches a boiler, inspectors are verifying far more than weld quality or paperwork completeness. They’re answering one critical question:
Learn how heating boilers unintentionally cross into ASME Section I power boiler classification, what inspectors look for, and how to avoid costly compliance surprises.
Learn the key differences between ASME Section I and Section IV boilers, including pressure limits, inspection requirements, and why choosing the right code matters for safety and compliance.
ASME Section I of the Boiler and Pressure Vessel Code (BPVC) governs the design, construction, and certification of power boilers—the heavy hitters used to generate steam or high‑temperature water for power generation, industrial processes, and large facilities. This section exists for one reason above all others: safety through standardization.
Shell and tube heat exchangers are a common type of heat exchanger used in various industries. Within this category, two primary designs stand out: floating head and U-tube. Each design has its own advantages and disadvantages, making it suitable for specific applications.
