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SENSITIVITY AND UNCERTAINTY ANALYSIS OF J INTEGRAL CALCULATION OF THE RELIABILITY ASSESSMENT OF REACTOR PRESSURE VESSEL (Entin Hartini, Roziq Himawan, Abdul Hafid, Deswandri, Geni Rina Sunaryo)

Entin Hartini, EH and Roziq Himawan, rh and Abdul Hafid, AH and Deswandri, DW and Geni Rina Sunaryo, GRS (2017) SENSITIVITY AND UNCERTAINTY ANALYSIS OF J INTEGRAL CALCULATION OF THE RELIABILITY ASSESSMENT OF REACTOR PRESSURE VESSEL (Entin Hartini, Roziq Himawan, Abdul Hafid, Deswandri, Geni Rina Sunaryo). In: Seminar Nasional Teknologi Energi Nuklir 2017 ISSN: 2355-7524 Makassar, 12 Oktober 2017, 12 Oktober 2017, Universitas Hasanudin - Makasar Sulawasi Selatan.

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Abstract

ABSTRACT SENSITIVITY AND UNCERTAINTY ANALYSIS OF J INTEGRAL CALCULATION OF THE RELIABILITY ASSESSMENT OF REACTOR PRESSURE VESSEL. The structural reliability of the reactor pressure vessel (RPV) is one aspect that must be considered in the safety analysis of the reactor. J integral calculation was conducted for structure reliability due to the cracks presence. In understanding the uncertainties that affect the output of the analysis, the evaluation of the uncertainty and sensitivity of the input variables need to be done. In the calculation of J integral input uncertainties variable involving physical variables for the loading condition that the internal pressure and material properties. The purpose of this study is to conduct a sensitivity analysis then to compare influence of the uncertainty of the outcome variable to output. RPV J integral calculation in 2D with initial crack modeled using MSC MARC. The calculation of input uncertainty was used simulation-based probabilistic density function (PDF). Then a sensitivity analysis using a variant of the conditional expectation was performed. The obtained results are stress intensity factor (SIF) to include the uncertainty of the load input will first reach the limit value of the fracture toughness (100 MPa m0.5) compared with the input uncertainty elasticity modulus. Based on the evaluation of the sensitivity value, the uncertainty of the load input heavily influence the integral J by 93.86% compared to the uncertainty of input on elasticity modulus. Keywords: Uncertainty, sensitivity, J integral, MSC MARC

Item Type: Conference or Workshop Item (Paper)
Subjects: Keselamatan dan Keamanan Nuklir
Divisions: Pusat Teknologi dan Keselamatan Reaktor Nuklir
Depositing User: USER PTKRN BATAN
Date Deposited: 07 Aug 2020 03:26
Last Modified: 07 Aug 2020 03:26
URI: http://repo-nkm.batan.go.id/id/eprint/9988

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