Calculation and Comparison of Pressure-Temperature Limit Curves Calculation

LU Feng; QIAN Haiyang; WANG Rongshan; HUANG Ping

Volume 33 Issue 3

Mar. 2025

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LU Feng, QIAN Haiyang, WANG Rongshan, HUANG Ping. Calculation and Comparison of Pressure-Temperature Limit Curves Calculation[J]. Nuclear Power Engineering, 2012, 33(3): 65-68.

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LU Feng, QIAN Haiyang, WANG Rongshan, HUANG Ping. Calculation and Comparison of Pressure-Temperature Limit Curves Calculation[J]. Nuclear Power Engineering, 2012, 33(3): 65-68.

LU Feng, QIAN Haiyang, WANG Rongshan, HUANG Ping. Calculation and Comparison of Pressure-Temperature Limit Curves Calculation[J]. Nuclear Power Engineering, 2012, 33(3): 65-68.

Citation:

LU Feng, QIAN Haiyang, WANG Rongshan, HUANG Ping. Calculation and Comparison of Pressure-Temperature Limit Curves Calculation[J]. Nuclear Power Engineering, 2012, 33(3): 65-68.

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Calculation and Comparison of Pressure-Temperature Limit Curves Calculation

1. Suzhou Nuclear Power Research Institute, Suzhou, Jiangsu, 215004, China;
2. Structural Integrity Associates, Inc. San Jose, USA

Received Date: 2010-12-20
Rev Recd Date: 2011-03-15

Available Online: 2025-03-08

Abstract

Abstract

In order to prevent the brittle fracture,during nuclear power plant（NPP） heatup and cooldown processes,pressure and temperature in the reactor pressure vessel should be kept under the pressure-temperature（P-T） limit curve.In this paper,the P-T limit curve methodologies of ASME code,RCCM code and Chinese Nuclear Industry Standard EJ/T 918 are studied.Calculation and comparison of the P-T curves obtained using methods from different codes are performed.It shows that using static fracture toughness KIC instead of reference fracture toughness KIR to calculate the P-T curves increases acceptable operating region during NPP heatup and cooldown processes significantly.Comparing to the latest versions of ASME and RCCM codes,the Chinese standard is more conservative.
- Reactor pressure vessel,
- Pressure temperature limit curve,
- Irradiation embrittlement

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