Tate Andale, Inc.

ASME Specs

Commitment To Quality Is Documented In The Field & In The Files

ASME is an acronym for American Society of Mechanical Engineers. In 1911, the Society established a committee for the purpose of developing a standard set of rules to govern the manufacturing of steam boilers and other pressure vessels. This committee is named the Boiler and Pressure Vessel Committee. The committee currently is responsible for the establishment of rules considered necessary to insure that newly manufactured pressure vessels of all kinds will perform in a safe and reliable manner. These rules are published as the ASME Boiler and Pressure Vessel Code. The Code is divided into eleven sections, each dealing with a particular area, such as concrete reactor vessels, construction of heating boilers, or nuclear power plant components.

There are four sections of the code that Tate Andale is involved with every day. Section VIII, Division I, which is “Rules for Construction of Pressure Vessels”; Section IX, “Welding and Brazing Qualifications”; Section V, “Nondestructive Testing” and Section II, “Materials”.

A quick snapshot of the mechanisms of the ASME Code is as follows. In the design stage at the conception of the strainer, the rules will dictate elements such as wall thickness, type of heads, type of flanges, material, type of welds, depth of welds, type of welding material, required heat treatment and more. All of these elements are determined mainly in relation to two variables, pressure and temperature. Corrosion, where applicable, may also contribute. ASME requires that vessels are designed “for at least the most severe condition of coincident pressure and temperature expected in normal operation”. A lengthy set of calculations is performed to determine these elements.

The next step is purchasing the materials. Materials must conform to ASME Boiler Pressure Vessel Section II, parts A-D. Material certification reports are required for all materials. These reports are supplied by the vendor with the material. Material certification reports include information such as chemical analysis, heat treatment numbers (when appropriate), etc. All material must have clear identification markings affixed by the vendor. Additionally, immediately upon receipt, Tate Andale clearly marks the material, so as to permit tracing to the material certification report. The ASME Inspector physically inspects the material, and then the material certification reports for complete compliance to the Code rules. At the same time, the auditor inspects the qualifications and certificates of the welders who will be involved with the production of the vessel, and the weld procedures to be used. This is in accordance with Section IX.

At this point actual production begins while following the ASME approved procedures. During the manufacturing process certain non-destructive testing procedures, in accordance with Section V, may be required. These procedures may include x-ray, magnetic particle, ultrasonic, liquid penetrant or hardness tests. When the manufacturing process is complete, the final test conducted is a mandatory hydrostatic test.

As you may imagine this whole process necessitates a sophisticated system to insure compliance. Tate Andale has in place a comprehensive quality system that meets or exceeds both military and ASME standards.

ASME insures the quality, integrity and reliability of our products and gives us the peace of mind that comes with producing the safest products available. Tate Andale follows this quality system every day to insure the highest level of quality in our products. We adamantly believe in the standards that ASME brings to the table.


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