第10回
POD 法による配管減肉検査の信頼性評価法と ハザードレートへの適用
著者:
中本 裕之,Hiroyuki NAKAMOTO,小島 史男,Fumio KOJIMA,加藤 翔,Sho KATO
発刊日:
公開日:
キーワードタグ:
This paper proposes a method of applying a reliability of inspection data to a calculation of hazard rate. First, the probability of detection (POD) is calculated from inspection data of thickness measurement of pipe wall by an ultrasonic thickness meter. The inspection data are collected from experiments by qualified or unqualified inspectors. The POD outputs probabilities of reliability assessment based on the inspection data. Second, the probabilities are used for a timing estimation of pipe hazard....
英字タイトル:
Reliability assessment for thickness measurements of pipe wall using probability of detection and application to hazard rate
論文
検出確率を用いた超音波厚さ計測による 配管減肉検査の信頼性評価について
著者:
中本 裕之,Hiroyuki NAKAMOTO,小島 史男,Fumio KOJIMA,加藤 翔,Sho KATO
発刊日:
公開日:
キーワードタグ:
This paper proposes a reliability assessment method for thickness measurements of pipe wall using probability of detection (POD). Thicknesses of pipes are measured by qualified inspectors with ultrasonic thickness gauges. The inspection results are affected by human factors of the inspectors and include some errors, because the inspectors have different experiences and frequency of inspections. In order to ensure reliability for inspection results, first, POD evaluates experimental results of pipe-wal...
英字タイトル:
Reliability assessment for thickness measurements of pipe wall using probability of detection
第9回
電磁超音波探触子を用いた配管減肉計測の信頼性評価
著者:
小坂 大吾,Daigo OSAKA,小島 史男,Fumio KOJIMA,中本 裕之,Hiroyuki NAKAMOTO,田端 大樹,Hiroki TABATA,加藤 翔,Sho KATO
発刊日:
公開日:
キーワードタグ:
This paper is concerned with risk assessment of pipe wall thinning management. The reliability of the NDT systems is evaluated from probability of detection (POD). The statistical uncertainty of NDT reliability is then represented by a conservative confidence bound on the POD function. The idea is applied to the pipe wall thinning management using electro magnetic acoustic transducer....
英字タイトル:
Reliability Assessment of Pipe Wall Thickness Measurementsusing Electro Magnetic Acoustic Transducer