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ASME BPVC.III.2-2025

2025 ASME Boiler and Pressure Vessel Code, Section III, Division 2, Code for Concrete Containments
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ASME BPVC.III.2-2025

2025 ASME Boiler and Pressure Vessel Code, Section III, Division 2, Code for Concrete Containments

PUBLISH DATE 2025
ASME BPVC.III.2-2025
The purpose of ASME BPVC.III.2-2025 is to define the complete set of mandatory requirements for the material, design, construction, testing, examination, and quality assurance of Concrete Containment Structures for nuclear power facilities.
What It Is Used For This document, also known as ASME Section III, Division 2, is a highly specialized part of the Boiler and Pressure Vessel Code that governs the safety-related concrete and steel components that form the massive structural barrier around a nuclear reactor. Its rules are applied to components designated as Class CC (Concrete Containment). Its primary uses are:
  • Nuclear Containment Barrier: It provides the detailed requirements for the structural integrity and leak-tightness of the overall concrete containment vessel, which serves as the third and final barrier to prevent the release of fission products into the environment in the event of a severe accident.
  • Reinforced and Prestressed Concrete Design: It sets forth the design and construction rules specifically for structures made of:
    • Reinforced Concrete (concrete containing rebar).
    • Prestressed Concrete (concrete with high-strength steel tendons tensioned after the concrete cures, providing immense structural strength).
    • The steel liner attached to the concrete, which ensures gas-tightness.
  • Extreme Load Analysis: The Code includes rigorous methodologies for designing these structures to withstand extreme and unusual loading conditions specific to nuclear facilities, such as internal pressure transients (from a pipe break), seismic events (earthquakes), and external hazards.
  • Quality and Testing: It mandates comprehensive inspection and testing procedures, including material qualification (for concrete, rebar, and tendons) and a mandatory structural integrity test after construction is complete.
In summary, BPVC.III.2 is the indispensable engineering code for constructing the immense, robust concrete barriers that ensure public safety by containing the reactor system under all operational and catastrophic accident scenarios.
SDO ASME: American Society of Mechanical Engineers
Document Number BPVC.III.2
Publication Date July 1, 2025
Language en - English
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