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Elastic-Plastic Analysis by BWXT Technologies: Enhancing Pressure Vessel Component Design

Efficient Design with Elastic-Plastic Analysis

BWXT Technologies showcases extensive experience in the inelastic design of pressure vessel components, utilizing Elastic-Plastic Analysis. This approach includes Limit Analysis design according to ASME Code Section III, NB-3228.1/Section VIII, Div. 2, 5.2.3, Plastic Analysis according to Section III, NB-3228.3/ Section VIII, Div. 2, 5.2.4, and other non-code design considerations. By isolating primary stresses, elastic-plastic analysis optimizes the available load carrying capacity of a structure without compromising safety against failure due to excessive deformation.

Applications and Benefits

Incorporating inelastic analysis often leads to a more efficient design compared to traditional elastic methods or 'design by rule.' This can translate to reduced weight, lower weld volume, decreased thermal stresses, improved fatigue life, and enhanced structural safety. Utilizing elastic-plastic analysis can also aid in the requalification of pressure vessel components that have experienced erosion, repairs, or over-pressurization. Examples of applications include design of access openings, steam drum heads, vessel/nozzle intersections, divider plates, tubesheets, and more.

Capabilities and Tools

BWXT Technologies offers a range of methodologies for inelastic analysis, leveraging proven commercial Finite Element (FE) codes such as ANSYS and ABAQUS. Their capabilities encompass primary stress or limit analysis through elastic iterations, elastic-perfectly plastic limit analysis, plastic analysis including hardening effects, analysis of anisotropic structures, explicit FE analysis for non-linear problems, inelastic transient and fatigue analysis, and more. The choice of analysis method is tailored to the specific nature of the problem and the client's preferences.


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Enhancing Nuclear Power Plant Safety with BWX Technologies' RELAP5 Analysis

Overview of RELAP5 Analysis

BWXT offers transient analysis of nuclear power plants utilizing the RELAP5TM/MOD3.3. This code has been meticulously validated and refined to deliver precise predictions of thermal hydraulic systems' normal operation and dynamic responses. RELAP5TM, developed by Idaho National Labs and endorsed by the Nuclear Regulatory Commission (NRC), focuses on the thermal-hydraulic analysis of transients and accidents in light-water nuclear power plants. It leverages a one-dimensional, two-fluid model comprising steam and water. With its extensive expertise, BWXT assists customers in anticipating thermal hydraulic performance and structural loads on components and internals using RELAP5TM.

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Revolutionizing Nuclear Security: BWX Technologies' PHWR Steam Generator Tube Inspection Solution

Innovative Solution for Steam Generator Inspections

BWXT has introduced a groundbreaking solution for steam generator inspections with the development of the PRIMA™ SG robotic manipulator. This state-of-the-art manipulator offers enhanced speed, accuracy, and durability, leading to significant reductions in both time and operator exposure during inspection campaigns. The PRIMA™ SG system was meticulously designed, assembled, and tested in-house by BWXT in collaboration with Intech, ensuring the highest quality and performance standards.

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Enhancing Nuclear Security with BWX Technologies Software Engineering Solutions

Innovative Software Engineering for Nuclear Power Stations

BWXT Nuclear Energy Canada (BWXT) has a rich history of over 50 years in designing and manufacturing advanced nuclear power station equipment. Their expertise ranges from fuel handling equipment to on/in-reactor tooling and refurbishment/maintenance tooling. Within BWXT, the Software Engineering department comprises top minds in the Canadian nuclear industry, specializing in software engineering and control systems technology.

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Enhancing Safety and Reliability with BWX Technologies' Ultrasonic Testing

Utilizing Ultrasonic Testing for Enhanced Inspections

Since 2004, BWXT has been at the forefront of utilizing Ultrasonic Testing (UT) for inspections on steam generators and preheater heat exchangers. This advanced inspection technique allows for more accurate depth sizing and better flaw discrimination, providing invaluable data for creating precise histories of each tube inspected. By anticipating the life expectancy of individual tubes and monitoring discontinuity growth rates such as pitting, fretting, and corrosion wall loss, BWX Technologies enables proactive maintenance and safety measures.

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Securing the Future: BWX Technologies' Nuclear Security Solutions

Mission and Commitment to Innovation

BWX Technologies, Inc. (BWXT) is a renowned provider of critical components and services to the United States government and commercial customers. With a rich history of innovation and performance, BWXT's mission is deeply rooted in being a trusted partner in nuclear security. The company's dedication to excellence drives every aspect of its operations, from the Naval Nuclear Propulsion program to research test reactors for national labs and beyond.

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