Originally founded in 1866 as the leading provider of boiler and pressure vessel inspection and insurance, HSB has provided inspection services to government facilities for more than 20 years. We are accredited by the American Society of Mechanical Engineers as an Authorized Inspection Agency (AIA) and by the National Board of Boiler and Pressure Vessel Inspectors as an AIA for new construction, and inservice inspections including acceptance of repairs and alternations under Certificates NB-360 and NB-369, respectively.


  • Periodic inspection of pressure equipment required by federal or agency-specific regulations.

Client Industries

  • Our client base includes more than 130 federal and state governmental agencies, including contractor-owned or operated facilities, and maintenance and management service contractors at US and foreign facilities.

Services Provided

  • Boilers, pressure vessels and related pressure equipment
  • Guidance and applicability of governing standards and regulations
  • Technical services, including design reviews
  • Equipment failure investigations

Client Benefits

Objective – HSB provides an objective third-party assessment.

Local Presence – We have local representation in Europe, Asia and the Americas so you can strategize globally and act locally.

Independent – We provide an independent verification of client’s quality assurance program and contractual requirements.

Single Source Inspection Service – HSB can perform inspections to all of your pressure equipment requirements.

Global Coverage – Our engineers and inspectors around the world allow us to cost-effectively manage complex, multi-site inspections involving a variety of standards.

Local Presence – We have local representation in Europe, Asia and the Americas so you can strategize globally and act locally.

Responsiveness – HSB responds quickly to urgent situations that require accelerated project schedules and high levels of responsiveness.

Global Inspection Staff – HSB has more than 450 pressure equipment inspectors and supervisors. We have National Board nuclear and non-nuclear commissioned inspectors in Asia, Europe, the Middle East, North and South America.

Client Focus – HSB ensures that the delivered services meet clients’ needs and requirements. Services can include everything from incoming material approval to installation and testing.

Experience – HSB brings together our knowledge of the ASME Codes and Standards, quality program development and surveillance activity, and combines it with our unique understanding of many international codes, which helps you save time and money.

Support – HSB is approved to perform pressure equipment inspections to almost all international codes and standards and often assist clients with design reviews and product inspections for international use.

Contact Us
Inspection Hot Line
Inspection Hot Line
8:00 a.m. to 8:00 p.m. EST, Monday through Friday
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