Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Maintenance Strategy based on reliability analysis: A case study of mechanical ventilators
Submission Author:
João Paulo de Aguiar , DF , Brazil
Co-Authors:
João Paulo de Aguiar, Viviane Vasconcellos Ferreira Grubisic, Zineb Simeu-Abazi, Andrea Cristina Santos
Presenter: João Paulo de Aguiar
doi://10.26678/ABCM.COBEM2021.COB2021-0199
Abstract
Difficulty breathing is one of the most common symptoms of the new coronavirus. Depending on the case, respiratory care needs to be reinforced with the use of mechanical ventilators (MV) in Intensive Care Unit (ICU). Good conditions of use and availability of MVs in the hospital environment can be crucial for the recovery and survival of patients. The correct maintenance strategy for this equipment becomes essential, since any failure during its operation can cause consequences in the patient treatment and even lead them to death. In this context, the development of a maintenance plan based on reliability indicators analysis is essential to formulate the best maintenance strategy for this equipment, in order to increase its availability and reliability. This paper aims to analyze the behavior of reliability indicators such as failure rate, Mean Time Between Failures (MTTF) and Mean Time To Repair (MTTR) of 118 MVs. First, a literature review is conducted on the main reliability indicators. Then, a brief study of MVs is presented. The failure behavior of the 118 MVs is modeled in terms of probability distribution using a free software called ProConf. After, an analysis of the failure behavior as a function of the Bathtub Curve is made in order to define appropriate maintenance strategies in terms of corrective, preventive and predictive maintenance. As a result, it is expected to help teams that are working on the maintenance of MVs in planning maintenance activities in a proactive way.
Keywords
reliability, analysis, maintenance, Mechanical ventilators
