Risk Analysis of a Robot-Safety Device System

Abstract

We consider the robot-safety device system as described in: Vanderperre and Makhanov, International Journal of Reliability, Quality and Safety Engineering 7 (2000) 169–175. The engineering system is characterized by the natural feature of cold standby and by a possible risky state. Apart from some tangible results obtained in the previous Literature, we introduce a risk function associated with the risky state of the robot. The risk function is determined by a coupled pair of convolution-type integral equations. In order to decide whether the risky state is admissible or reprehensible, we also introduce a suitable risk-criterion involving the supremum norm. We demonstrate that the criterion is always satisfied in the particular but important case of "fast" repair. Finally, we propose a numerical procedure to solve the system of integral equations and we calculate the underlying risk function.

Overall availability and risk analysis of a general robot–safety device system

“…Vanderperre 2000Vanderperre , 2001Vanderperre and Makhanov 2005), consists of a robot with a safety device subjected to standby and attended by two heterogeneous repairmen. The robot is allowed to operate when the safety device is under repair, provided that a suitable risk criterion is satisfied (Vanderperre and Makhanov 2002). A useful modification of the T-system, called the S-system, is characterised by a shut-off rule for the robot (Vanderperre and Makhanov 2009), i.e.…”

A decision model for executing plant strategy: maintaining the technical integrity of petroleum flowlines

“…In complex plants and process industries, there is a constant need to maintain a desired safety level or to improve upon the present safety level in order to safeguard lives, property, investments and the environment (Bjorge and Bratseth, 1996;Khan and Amyotte, 2002;Mearns and Flin, 1995;Rundmo et al, 1998;Vanderperre and Makhanov, 2002). The harsh marine environmental conditions result in adverse operational challenges, due to degradation in the form of corrosion, erosion or stress generation of a production and process facility's infrastructure.…”

Risk Analysis of a Robot–safety Device System Subjected to a Priority Rule

“…Apart from various robot-safety device systems introduced in the previous literature, for example Dhillon and Yang [5], Vanderperre and Makhanov [13], Vanderperre and Makhanov [14], we introduce a modified system (henceforth called the M-system) characterized by the following features:…”