Pressure Vessels

ASME Boiler and Pressure Vessel Code

The ASME Boiler and Pressure Vessel Code (BPVC) is an American Society of Mechanical Engineers (ASME) standard that provides rules for the design, fabrication, and inspection of boilers and pressure vessels. A pressure component designed and fabricated in accordance with this standard will have a long, useful service life, and one that ensures the protection of human life and property. Volunteers write the BPVC. They are nominated to its committees based on their technical expertise and on their ability to contribute to the writing, revising, interpreting, and administering of the document.

Vector Systems is qualified to design and construct Vessels with the following Stamps:

U : Unfired Pressure Vessels per Section VIII of the code.
R : The National Board offers the Certificate of Authorization and R symbol stamp for the repair and/or alteration of boilers, pressure vessels, and other pressure-retaining items.
S : Manufacturing of section I boilers and accessories done under ASME code according to geographical locations, insurance requirements, and State Law.


Starting with Shells and Heads, VSI constructs a wide range of configuration in a multitude of materials.  Selecting from a variety of head styles:

  • 2:1 Elliptical or Semi-Elliptical
  • ASME Flanged & Dished
  • Hemispherical
  • Flat
  • Flanged Only

VSI combines them with a multitude of man-way and nozzle configurations to meet your needs.

Integrated secondary containment is an option Vector Systems has experience with and offers as a solution to ever more difficult local regulations.


Adding Accessories like Access Ladders Platforms, Loading Davits. Vector can go a step further providing all instrumentation, piping, and pumping components.

VSI is your one stop supplier.

Finished Packages:


The BPVC was a result of public outcry caused by several serious explosions in the North East United States. Particularly, a boiler exploded at the Grover Shoe Factory in Brockton, Massachusetts in March 1905 killing 58 people and injured 150. Less than 2 years later in December 1906 a boiler in the factory of the P.J. Harney Shoe Company exploded. The state of Massachusetts responded by establishing the first legal code based on ASME’s rules for the construction of steam boilers in 1907.

ASME convened the Board of Boiler Rules which became the ASME Boiler Code Committee in 1911. This committee put in the form work for the first edition of the ASME Boiler Code – Rules for the Construction of Stationary Boilers and for the Allowable Working Pressures.  This was issued in 1914 and published in 1915.

Since 1911, ASME has written code standards for boilers and pressure vessels. These code requirements are for the purpose of ensuring public safety and the highest standards of construction as it pertains to pressure vessels.

ASME Code Symbol Stamps are used to indicate that stamped items conform to the latest edition of the ASME code. This provides you with a high degree of confidence that the pressure piping is built to the established safety standards. This also ensures that their piping projects are done correctly and in a professional manner.

The ASME Boiler and Pressure Vessel Code is a set of requirements which must be met when performing repairs to boilers and pressure vessels. In 1975, the National Board of Boiler and Pressure Vessel Inspectors realized that the lack of quality repairs could lead to a catastrophic failure.