99件が見つかりました。

並び替え
・
第12回
ナトリウム冷却型高速炉のトラブル事例データベース の開発
著者:
下村 健太,Kenta SHIMOMURA, ダニエル・ガルシア・ロドリゲス, Daniel Garcia Rodriguez
発刊日:
公開日:
キーワードタグ:
There is a longstanding interest to improve the in-service inspection (ISI) of nuclear power plants in general, and sodium fast reactors (SFR) in particular. With the goal of improving both safety and economic performance, a risk-informed approach to in-service inspection (RI-ISI) has therefore been earmarked for future commercialscale SFR. A reliable RI-ISI, however, can only be established based on a rich operational experience record. For long, JAEA has compiled information about SFR troubles, but u...
英字タイトル:
Development of Trouble Data base of Sodium-cooled Fast Reactor
第12回
マイクロ波を用いたクラックレーダーにおける 入射部構造の最適化
著者:
Grzegorz BYTNIEWSKI,佐々木 幸太,Kota SASAKI,遊佐 訓孝,Noritaka YUSA,橋爪 秀利,Hidetoshi HASHIZUME
発刊日:
公開日:
キーワードタグ:
This paper reports the optimization of a new microwave probe for the nondestructive testing of an inner wall surface of the pipe, which is one of a novel long-range inspection. The method propagates a microwave inside a pipe to detect defects appearing the inner surface on the basis of the reflection of the microwave due to the defects. In order to propagate microwave into a pipe efficiently, the optimization based on the reflection and transmission characteristics at the probe obtained by the two-dime...
英字タイトル:
Structure Optimization of the Excitation Probe in Crack Rader Using Microwave
第12回
リスク評価指標とレジリエンス指標を組み合わせた 経年プラントの総合評価
著者:
杉山 直紀,Naoki SUGIYMA,宮野 廣,Hiroshi MIYANO,山口 彰,Akira YAMAGUCHI,出町 和之,Kazuyuki DEMACHI,高田 孝,Takashi TAKATA
発刊日:
公開日:
キーワードタグ:
We have established a procedure for comprehensive safety assessment of aging plant using a combination of two indices; risk index and resilience index. And, we have identified important equipment using a simple resilience index and have extracted failure mode using a risk index with detailed plant model. Those were applied to three loop PWR plant as trials. We are reporting its summary and considering the effectiveness of the resilience index. ...
英字タイトル:
Development of Comprehensive Safety Assessment Method for Aging Nuclear Power Plant Using Risk Index and Resilience Index
第12回
レジリエンス指標活用における 静的劣化要因に対する機器信頼性評価の検討
著者:
中村 隆夫,Takao NAKAMURA,釜谷 昌幸,Masayuki KAMAYA
発刊日:
公開日:
キーワードタグ:
１．はじめに 事故時における原子力発電所の安全確保上重要なのは、一時的に喪失した安全機能をアクシデントマネジメント(AM)によりいかに早く必要なレベルまで回復できるかにある。そこで、原子力発電所の事故時における安全機能の信頼度を経年変化と保全の効果を取り入れて簡易かつ定量的に評価するため「レジリエンス指標」が提案され、その策定手法の開発が進められている。[1] 本研究では、レジリエンス指標を活用するため、低サイクル疲労による構造物損傷確率モデルを作成し、静的劣化要因に対する機器信頼性評価への適用性について......
英字タイトル:
Study on Reliability Analysis for Degradation of Static Components in the Application of Resilience Index
第12回
レーザーを用いた配管検査補修装置の開発
著者:
寺田 隆哉,Takaya TERADA,西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,外山 亮治,Ryoji TOYAMA,橘内 大輔,Daisuke KITSUNAI
発刊日:
公開日:
キーワードタグ:
A prototype of maintenance machine for heat exchanger tubes was developed. It was based on the bench top size device which had been specially designed to have dual functions for fiber inspection and laser cladding in JAEA. A laser processing head was improved mechanically in 2 motions of axial translation and circumferential rotation to insert the heat exchanger tubes. ...
英字タイトル:
Development of Maintenance Machine for Heat Exchanger Tubes by Laser Technology
第12回
低合金鋼SQV2A の多パスビードオン溶接の相変態を考慮した残留応力解析
著者:
柳田 信義,Nobuyoshi YANAGIDA,斎藤 高一,Koichi SAITO
発刊日:
公開日:
キーワードタグ:
Weld pass sequence generally affects residual stress profiles. In this study, the profiles of a multi pass bead on plate specimen were experimentally and analytically examined. Material used in this study was the low alloy steel SQV2A (JIS G 3120). Phase transformation usually occurs around welded area in SQV2A and also affects the profiles. Five pass bead on plate specimen was fabricated. Residual stress profiles of the specimen were measured by using the strain relief method. Longitudinal residual st...
英字タイトル:
Residual Stress Analysis of Multi Pass Bead on Plate Specimen of Low Alloy Steel SQV2A by Considering Phase Transformation in Welding Process
第12回
低所用ドライアイスブラスト除染装置の開発
著者:
酒井 仁志,Hitoshi SAKAI,金田 雅之,Masayuki KANEDA,齊藤 真拡,Masahiro SAITO,佐藤 光吉,Mitsuyoshi SATO,佐藤 勝彦,Katsuhiko SATO,矢板 由美,Yumi YAITA
発刊日:
公開日:
キーワードタグ:
Various activities were doing for the decommissioning of Fukushima Daiichi nuclear power station. In present, activities are limited by remote operation or short time manual operation, because these areas are still high radiation rate. In this situation, it is expected to reduce the radiation rate of these areas by the decontamination, shielding and removal radiation souses, et al. At the national project “Development of remote decontamination technology for reactor building”, we selected adoptable de...
英字タイトル:
Development of Remote Dry-ice Blast Decontamination Vehicle for the lower part of the Reactor Building such as floor and wall
第12回
低所用高圧水ジェット洗浄装置の開発
著者:
上野 陽平,Yohei UENO,吉久保 富士夫,Fujio YOSHIKUBO
発刊日:
公開日:
キーワードタグ:
Various works are planned for the decommissioning of Fukushima Daiichi nuclear power station (1F). The dose rate is high inside the reactor buildings, therefore it is necessary to reduce the dose rate. Decontamination is one of the ways to reduce the dose rate. The remote decontamination machine with high-pressure water was developed for the lower section, which is from the floor up to 2-meters on the wall in the reactor building. In this paper, the result of development and validation in 1F unit 1 rea...
英字タイトル:
Development of A Remote Decontamination Machine with High-Pressure Water for the lower section of the Reactor Building 大野 諭 Satoshi ONO Non-member
第12回
六ヶ所再処理工場における各種設備アズビルト情報の ３次元レーザー計測と設備保全への適用
著者:
源波 佑,Tasuku GENBA,久保田 紫乃,Shino KUBOTA,小栗 弘光,Hiromitsu OGURI,蝦名 哲成,Tetsunari EBINA,山本 光,Hikaru YAMAMOTO
発刊日:
公開日:
キーワードタグ:
In order to realize a long-term stable operation of Rokkasho reprocessing plant, 3D Laser Scanning System has been introduced to establish a database for the visualization of the latest as-built information of facilities since 2009. This database is processed and used for the some purpose of the plant preservation. Authors defined the specification of this system for the plant, introduced this for extraction of the latest information of facilities ､ and evaluated the effect when this Scanning System is ...
英字タイトル:
3D Laser scanning system for facilities of as-built situation and it’s application for the maintenance of Rokkasho Reprocessing Plant
第12回
六ヶ所再処理工場の横型遠心ファンにおける 軸受外輪クリープの振動診断について
著者:
佐々木 一人,Ichito SASAKI,瀬川 佑太,Yuta SEGAWA,吉村 定志,Sadayuki YOSHIMURA,沢田 悠,Haruka SAWADA
発刊日:
公開日:
キーワードタグ:
Many number of horizontal shaft type ventilation fan system were installed and have been continuously operated in the Rokkasho reprocessing plant. The maintenance method by TBM(Time Based Maintenance) and periodical vibration diagnosis has been applied for the stable operation to keep containment function of the facilities. Although a bearing creep phenomenon of fan and motor is one of the important factors to evaluate the integrity, it has been said that it was not easy to recognize early from the mon...
英字タイトル:
Vibration diagnosis for bearing creep phenomenon of horizontal shaft type ventilation fan in Rokkasho reprocessing plant.
Copyright © 2019 保全技術アーカイブ - サイトポリシー