A glass lining equipment has high corrosion resistance and contamination-free surface; however, the glass layer might be damaged due to physical means (e.g. impact) and repair is necessary. Current organic repair materials for it have some problems on application such as debonding from glass lining substrate at an early stage. A method of evaluation the repair was established and reported before. In this paper, based on this method highly reliable organic repair material for glass lining was developed. After contact with corrosive liquid or vapor, high adhesive strength was secured between glass lining substrate and organic repair material.

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This paper concerns practicable technique to determine the sensor location where the sensor(s) can detect the defect of bearings installed in a machine efficiently. In this study, the characteristic of the vibration transfer is applied for this purpose. A proposed method is based that the transmissibility of signal by defect is almost same as the impulse signal. By the experimental results, a practical procedure to determine the number and the locations of sensors had been shown in the previous paper. Adding to this, in this paper, the detectability of sensor(s) on casing is discussed.

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This paper presents a method of processing time-series images of bubbles and a visualization method for the processed images, for the sake of diagnosis of process state inside aerated agitation vessels. Two cases of an aerated agitation process and a froth flotation process are studied. Multiple images of bubbles, of which patterns change nonlinearly with time, are acquired in each process, and temporal transition of the images can be visualized in a plane by the self-organizing map (SOM) and the principal component analysis. Moreover, it is demonstrated that an appropriate data transformation in computing images by the SOM enable us to diagnose displacement of an impeller shaft and small change of process state that is caused by addition of surfactant.

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Relational Information System for Chemical Accidents Database (RISCAD) has been developed by AIST and JST. Some of the accident data contain progress flowcharts and lessons learned information. The accident progress flowcharts have been created to assist database users to have more clear understanding of what happened in the accident. As for the procedures to make the flowcharts, first, one of the analyzing team members from the RISCAD staff investigated some accident reports and made a draft progress flowchart to discuss with other members together. Then, we tried to figure out, for example, the root causes, which had not been clear yet since the accident occurred. Finally, the progress flowchart can then be updated on the website. You can also see their lessons learned information that can be helpful to prevent future accidents. In this paper, the outline and the functions of RISCAD are introduced. Also, a case study related to mechanical equipments is presented following the progress flowchart.

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2006年に改訂された労働安全衛生法は、事業者にリスクアセスメントを義務づけた。このリスクアセスメントは事業所で現在使用されている機械設備や施設へのリスクアセスメントに重点がありOSHMSの一環として活用されることに特徴がある。また使用者におけるヒューマンファクタを組み込むことを期待している。本講演ではユーザーがリスクアセスメントを実施するときにヒューマンエラーをどのように評価するかを身近でありかつ災害の多い食品製造機械を事例に報告する。

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In International trade, the internationalization of standards has been expanded by WTO/TBT agreement. International standards of combustion safety control are mainly provided to prevent explosion. These standards are the same as in USA or Europe. The influence of breakage of every manufactured electrical part is considered. These are idea of fail-safe. In international standards IEC60730-2-5 / JIS C 9730-2-5 (Automatic electrical controls for household and similar use - Part 2-5: Particular requirements for automatic electrical burner control systems) is combustion safety control standards and referenced to residential and commercial combustion equipments. Establishment of combustion safety control is to use these standards and these idea. For some actions by small groups in facility under the top and end-user, this risk assessment tool is produced to contribute to safety establishments.

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In this paper, we focus on a design of the alarm system as a first step to develop a design methodology of IPL (Independent Protection Layers) [1] based on PHA (Process Hazard Analysis). We present a design method based on HAZOP (Hazard and Operability Study) to develop two kinds of alarm systems separately, i.e. one is for cause identification, and the other is for consequence mitigation. The effectiveness of this study is illustrated through a case study for Hydro Desulfuration (HDS) process.

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産業機械の開発及び設計から納入は,リスクアセスメントから安全方策を行わなければならない。機械使用者の責任範囲は、リスクマネジメントとして安全性能レベルを維持しなければならない。この安全性能レベルの維持費用を見積ることが必要不可欠である。本論文は,リスクマネジメントにおけるライフサイクルコスティングに基づいた最適コストの必要性について探求した。

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In the past, Integrated Manufacturing System has been implemented with Network. With an availability of EtherNet/IP, Integrated Manufacturing System has been tremendously advanced by providing high-speed data transaction, support huge number of nodes, multi-tasking operations with one physical media. On the other hand, Safety Function has been performed with stand-alone hard-wired solution for long term. In the past 10 years, Safety PLC and Safety Network have been developed, but they were not integrated between Standard Control and Safety Control because Safety network has been dedicated for Safety only. Now with EtherNet/IP Safety, one network can be utilized for both Standard Control and Safety Control. This paper gives you a study to implement Integrated Manufacturing System that integrates Standard Control and Safety Control for Semi-conductor applications.

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In FA (factory automation) and other industrial fields in recent years, more attention has been paid to safety in addition to the improvement in productivity and efficiency of machineries. Our production facility Robot Control Cell has been subject to risk assessment based on international standards ISO 12100 and ISO 14121, and the results obtained from the assessment were reflected to the optimal arrangement of safety components such as interlock switch, light curtain, enabling switch, and emergency stop switch. The effect of safety components, which were arranged to provide the safety measures based on the risk assessment of the system, were evaluated by conducting a questionnaire survey to the system operators. The survey results show that the safety of the system has been improved significantly. In this paper, we report on the results while evaluating them from a variety of angles.

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