Alarm Design in Computerized Medical Equipment

2011 ◽  
pp. 403-409
Author(s):  
D. John Doyle
Keyword(s):  
Critical Care ◽  
Intensive Care ◽  
Medical Equipment ◽  
Nuclear Power ◽  
Power Plants ◽  
Clinical Environment ◽  
Infusion Pumps ◽  
Safety Critical ◽  
Medical Products ◽  
Modern Hospital

Alarms are frequently employed in safety-critical environments such as in aviation and nuclear power plants. Now that microcomputer technology has revolutionized the design of patient monitors for use in modern hospital operating rooms (ORs) and intensive care units (ICUs), alarms are used in countless medical products ranging from infusion pumps to ventilators. This is especially true in anesthesia/surgical and critical care environments. In this chapter we examine the use of alarms in the acute care clinical environment, focusing on their strengths and limitations in the setting of patient monitoring equipment.

Safety Issues in Computerized Medical Equipment

2011 ◽  
pp. 396-402 ◽  
Author(s):  
D. John Doyle
Keyword(s):  
Radiation Therapy ◽  
Medical Equipment ◽  
Nuclear Power ◽  
Power Plants ◽  
Food And Drug Administration ◽  
Critical Systems ◽  
Safety Issues ◽  
Safety Critical ◽  
Safety Critical Systems ◽  
Critical Results

Computers now are being used increasingly in safety-critical systems like nuclear power plants and aircraft and, as a consequence, have occasionally been involved in deadly mishaps. As microcomputer technology continues to proliferate, computers are also now increasingly being used in medical equipment such as ventilators and pacemakers, sometimes with safety-critical results. This chapter discusses some of the special concerns that arise when computer technology is introduced into medical equipment, using two case studies as examples: the Therac-25 radiation therapy unit and Abbott’s patient controlled analgesia machine. Also discussed are some of the regulations that have been proposed by the (American) Food and Drug Administration (FDA) to help tackle the special problems that can arise when developing software-based medical equipment.

Design of a Platform for Safety Justification of Safety-Critical Software

2017 ◽  
Author(s):  
Guo Jia ◽  
Yang Ming
Keyword(s):  
Software Reliability ◽  
Nuclear Power ◽  
Power Plants ◽  
Graphical Interface ◽  
Key Factors ◽  
Safety Critical ◽  
Software Products ◽  
Software Product ◽  
Quality And Reliability ◽  
User Friendly

Since safety-critical software is crucial to nuclear safety in the occurrence of accident, it is required to have rather higher requirements in both reliability and safety than the non-safety one. However, since the complexity of a software product, how to ensure the reliability and safety of a software product is still a challenging work. The paper presents a design of a platform for safety justification of safety-critical software of nuclear power plants. A syllogism referred as to Claim, Argument and Evidence (CAE) is applied to clarify the key factors that will affect software reliability and the dependencies between them. The proposed safety justification platform offers a user-friendly graphical interface to help construct a CAE model by a drag and drop way. The proposed safety justification platform could be used for the rigorous argument of various factors that may affect the reliability of a safety-critical software product during different phases of its life cycle and establishing their causalities. In this way, it could greatly improve its creditability and applicability and lowering the uncertainties in software development and application, and therefore has a significant engineering values in ensuring and improving the quality and reliability of nuclear software products.

scholarly journals Certification of Software in Safety-Critical I&C Systems of Nuclear Power Plants

Nuclear Power ◽  
10.5772/9909 ◽  
2010 ◽  
Author(s):  
Risto Nevalainen ◽  
Juha Halminen ◽  
Hannu Harju ◽  
Mika Johansso
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Safety Critical

scholarly journals Early quantification of reliability for a safety critical and control system: a case study of reactor core cooling system

2018 ◽  
Vol 7 (2.12) ◽  
pp. 248
Author(s):  
Vinay Kumar ◽  
Suraj Gupta ◽  
Anil Kumar Tripathi
Keyword(s):  
Control System ◽  
Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Cooling System ◽  
Reactor Core ◽  
Safety Critical ◽  
Core Cooling ◽  
And Control

Using Probabilistic Reliability analysis for Quantifying reliability of a system is already a common practice in Reliability Engineering community. This method plays an important role in analyzing reliability of nuclear plants and its various components. In Nuclear Power Plants Reactor Core Cooling System is a component of prime importance as its breakdown can disrupt Cooling System of power plant. In this paper, we present a framework for early quantification of Reliability and illustrated with a Safety Critical and Control System as case study which runs in a Nuclear Power Plant.  

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