The paper deals with a quantitative approach to safety assessment process applicable to the safety-related system, specially the railway interlocking one. The authors present the methodology based on the Failure Mode and Effects Analysis (FMEA) and the Fault Tree Analysis (FTA) that is applicable to performing safety analysis of both electronic and computer based systems. The mathematical basis...

The failure mode and effect analysis (FMEA) approach was used to assess the potential risks for patients during the delivery of tomotherapy treatments. This study, which completed a previous investigation recently performed on the tomotherapy pretreatment phases, enabled the delineation of the delivery process tree and the identification of 30 failure modes, 9 of which were judged to be of part...

This paper argues that software engineering should not overlook the lessons learned by other engineering disciplines with longer established histories. As software engineering evolves it should focus not only on application functionality but also on mature engineering concepts such as reliability, dependability, safety, failure mode analysis, and maintenance. Software is rapidly approaching the...

The US Human Reliability Analysis (HRA) Empirical Study (referred to as the US Study in the article) was conducted to confirm and expand on the insights developed from the International HRA Empirical Study (referred to as the International Study). Similar to the International Study, the US Study evaluated the performance of different HRA methods by comparing method predictions to actual crew pe...

When building a control plan, we are always facing a threefold issue: Should we check product characteristics or process parameters? Where have we to place this check? Is our effort of control adapted; or is it undersized, oversized? Such as it is classically implemented, FMEA usually highlights the lacks and not the excess of controls, thus generating too heavy and usually too expensive a cont...

Abstract— The design quality holds a decisive influence on success of product. Our work is comprehensive study of software metrics to evaluate quality in the design phase which will be beneficial to find, repair design problems and saves large amount of potential expenditure. This paper evaluates employment of several design methods such as Robust Engineering Design, Failure Mode and Effect Ana...

In this paper we present the formal safety analysis of a radiobased railroad crossing. We use deductive cause-consequence analysis (DCCA) as analysis method. DCCA is a novel technique to analyze safety of embedded systems with formal methods. It substitutes error-prone informal reasoning by mathematical proofs. DCCA allows to rigorously prove whether a failure on component level is the cause fo...

Engineering for disassembly of waste products is becoming increasingly complex. Furthermore, customer expectations are growing, competition is becoming harder, legal requirements are stricter and the quality of technical products is continuously improving. FMEA is a formalised, analytical method for the systematic, consistent collation and prevention of potential sources of errors and their res...

Abrasive waterjet cutting nowadays represents cold precise, computer controlled shape cutting without any strain [1, 2]. These attributes pose this technology to the position of permanent use in the future, that represents excellent perspective for expansion in volume sectors, especially there, where the materials with excellent utility properties are used [3, 4]. The AWJ technology is, under e...