A new method for determining the threshold level of impact energy for reactor pressure vessel metal

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping Pub Date : 2025-03-20 DOI:10.1016/j.ijpvp.2025.105509

S. Kotrechko , K. Soroka , V. Revka

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Abstract

This paper presents the results of validation of a novel approach for finding the threshold level of impact energy to estimate a ductile to brittle transition temperature for ferritic and ferritic-martensitic steels used for the manufacture of reactor pressure vessels (RPV). The idea of the proposed approach is that the value of the threshold level of impact energy is adjusted depending on the strength of the steel. The opportunity of increasing the threshold level of impact energy KV_th as the strength of RPV steels increases is validated. The KV_th correction technique is described using surveillance test data for Charpy impact and uniaxial tension tests. For highly embrittled RPV steels (transition temperature shift around 160 °C or more), the ASTM E185 standard method is shown to clearly underestimate the radiation shift as compared to a physically based approach.

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一种确定反应堆压力容器金属冲击能阈值的新方法

本文介绍了一种新方法的验证结果，该方法用于计算用于制造反应堆压力容器（RPV）的铁素体钢和铁素体-马氏体钢的韧脆性转变温度的冲击能阈值水平。所提出的方法的思想是，冲击能量的阈值水平的调整取决于钢的强度。验证了冲击能阈值随RPV钢强度的增加而增加的可能性。利用夏比冲击和单轴拉伸试验的监测试验数据描述了KVth校正技术。对于高脆化RPV钢（转变温度在160°C左右或更高），与基于物理的方法相比，ASTM E185标准方法明显低估了辐射变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Pressure Vessels and Piping 工程技术-工程：机械

CiteScore

5.30

自引率

13.30%

发文量

208

审稿时长

17 months

期刊介绍： Pressure vessel engineering technology is of importance in many branches of industry. This journal publishes the latest research results and related information on all its associated aspects, with particular emphasis on the structural integrity assessment, maintenance and life extension of pressurised process engineering plants. The anticipated coverage of the International Journal of Pressure Vessels and Piping ranges from simple mass-produced pressure vessels to large custom-built vessels and tanks. Pressure vessels technology is a developing field, and contributions on the following topics will therefore be welcome: • Pressure vessel engineering • Structural integrity assessment • Design methods • Codes and standards • Fabrication and welding • Materials properties requirements • Inspection and quality management • Maintenance and life extension • Ageing and environmental effects • Life management Of particular importance are papers covering aspects of significant practical application which could lead to major improvements in economy, reliability and useful life. While most accepted papers represent the results of original applied research, critical reviews of topical interest by world-leading experts will also appear from time to time. International Journal of Pressure Vessels and Piping is indispensable reading for engineering professionals involved in the energy, petrochemicals, process plant, transport, aerospace and related industries; for manufacturers of pressure vessels and ancillary equipment; and for academics pursuing research in these areas.