H Stamp Archives - Authorized Inspector

When a Heating Boiler Becomes a Power Boiler: ASME Section I vs IV Explained

Post category:Boiler H Stamp S Stamp Vessel Knowledge

When a Heating Boiler Becomes a Power Boiler: ASME Section I vs IV Explained

Learn how heating boilers unintentionally cross into ASME Section I power boiler classification, what inspectors look for, and how to avoid costly compliance surprises.

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U-Stamped Pressure Vessels: A Mark of Quality and Safety

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...

Understanding the PP-Stamp: A Mark of Quality for Piping Components

The PP-Stamp is a certification mark issued by the National Board of Boiler and Pressure Vessel Inspectors (NBBPVI). It signifies that a manufacturer is authorized to weld, fit, manufacture, and...

Radiographic Testing (RT) for U-Stamp Certification

Radiographic Testing (RT) is a powerful NDE technique widely used in the manufacturing of pressure vessels and boilers. It involves the use of ionizing radiation to penetrate the material and...

Applicant’s Guide for Certificates of Authorization

Certification is a pinnacle achievement for fabrication shops, signifying a commitment to excellence and adherence to rigorous quality standards. This distinction sets certified shops apart from those lacking formal documentation,...

U-Stamp Certification: Material Selection

The ASME® BPVC specifies a range of materials that are suitable for use in pressure vessels and boilers. These materials are often listed in the ASME® Boiler and Pressure Vessel...

Navigating the Path to U and U2 Stamp Certifications

ASME Applicants Requesting; New, Multiple, or Renewal Certification

Applicants for new issuance or renewal of an ASME® Certificate(s) of Authorization should be aware that the Joint Review will require implementation and demonstration of their Quality Control Program. The...

Material Selection for High-Pressure Applications

When it comes to designing pressure vessels, one of the most critical decisions engineers face is selecting the right material. In high-pressure environments, the wrong choice can lead to catastrophic...

S-Stamp: A Mark of Quality for Power Boilers

An S-Stamp is a certification mark issued by the National Board of Boiler and Pressure Vessel Inspectors (NBBPVI). It signifies that a manufacturer is authorized to build and stamp power...

Pre-Joint Review Checklist

Go into your Joint Review with confidence. Use our Pre-Joint Review checklist to help determine if you have what you need or just get you on the track.

U2-Stamped Pressure Vessels: A Focus on Repair and Alteration

A U2-Stamp is a certification mark issued by the National Board of Boiler and Pressure Vessel Inspectors (NBBPVI). It authorizes a manufacturer to repair and alter existing pressure vessels and...

ASME® B31.1: A Comprehensive Guide to Power Piping Design

The ASME® B31.1 Code for Power Piping is a widely recognized standard that provides guidelines for the design, fabrication, and installation of piping systems for power plants. This code ensures...

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