What is meant by ASME ?
The American Society of Mechanical Engineers (ASME) Boiler & Pressure Vessel Code (BPVC) is a standard that governs the design and construction of boilers and pressure vessels. Volunteers chosen for their technical expertise write and update the document. The ASME acts as an accrediting organization, allowing independent third parties (such as verification, testing, and certification firms) to inspect and ensure that the BPVC is being followed.

List of Sections
Section I : Rules for Construction of Power Boilers
Section II : Materials
Part A — Ferrous Material Specifications
This Part is a supplementary book that is referred to in other Code sections. It contains material standards for ferrous materials that are appropriate for use in pressure vessel construction.
The mechanical qualities, heat treatment, heat and product chemical composition and analysis, test specimens, and testing techniques are all specified in this Part. The specifications are labelled with the letters 'SA' and a number derived from the ASTM 'A' specifications.
Part B — Nonferrous Material Specifications
This Part is a supplementary book that is referred to in other Code sections. It contains material standards for nonferrous materials appropriate for use in pressure vessel construction.
The mechanical qualities, heat treatment, heat and product chemical composition and analysis, test specimens, and testing techniques are all specified in this Part. The specifications are designated by the letters 'SB' and a number derived from the ASTM 'B' specifications.
Part C — Specifications for Welding Rods, Electrodes, and Filler Metals
This Part is a supplementary book that is referred to in other Code sections. For welding rods, filler metals, and electrodes used in the building of pressure vessels, it covers mechanical properties, heat treatment, heat and product chemical composition and analysis, test specimens, and testing techniques.
The 'SFA' and a number from the American Welding Society (AWS) requirements are used to indicate the specifications in this Part.
Part D — Properties (Customary)
Part D — Properties (Metric)
Section III : Rules for Construction of Nuclear Facility Components
Subsection NCA — General Requirements for Division 1 and Division 2
Appendices
Division 1
– Subsection NB : Class 1 Components
– Subsection NC : Class 2 Components
– Subsection ND : Class 3 Components
– Subsection NE : Class MC Components
– Subsection NF : Supports
– Subsection NG : Core Support Structures
Division 2 — Code for Concrete Containments
Division 3 — Containment Systems for Transportation and Storage of Spent Nuclear Fuel and High-Level
Radioactive Material
Division 5 — High Temperature Reactors
Section IV : Rules for Construction of Heating Boilers
Section V : Nondestructive Examination
Section VI : Recommended Rules for the Care and Operation of Heating Boilers
Section VII : Recommended Guidelines for the Care of Power Boilers
Section VIII : Rules for Construction of Pressure Vessels
Division 1
Division 2 - Alternative Rules
Division 3 - Alternative Rules for Construction of High Pressure Vessels
Section IX : Welding, Brazing, and Fusing Qualifications
Section X : Fiber-Reinforced Plastic Pressure Vessels
Section XI : Rules for Inservice Inspection of Nuclear Power Plant Components
Division 1 - Rules for Inspection and Testing of Components of Light-Water-Cooled Plants
Division 2 - Requirements for Reliability and Integrity Management (RIM) Programs for Nuclear Power Plants
Section XII : Rules for Construction and Continued Service of Transport Tanks 
This Part is a supplementary book that is referred to in other Code sections. It includes tables for design stress values, tensile and yield stress values, and material property data.