Failure Mode Analysis of Radiologic Equipment in a Tertiary Institution in South-Eastern Nigeria
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 10
Abstract
Background: A valid benchmark for Radiologic equipment failure analysis using a nine mode factor of chronological categories; Improper storage and transportation, Initial failure, Inappropriate handling, Inadequate maintenance, Environmental stress, Production deficiencies, Radom failure, Inappropriate repairs techniques, Wear-out failure. Objectives: To present failure modes that analyze the causes of Radiologic equipment failure based on maintenance history and age of the equipment with preventive and repair maintenance policy Materials and Methods: A triangulational research design (combination of quantitative and qualitative research) was adopted for the study. All radiological equipment failure and causes, repair service activity form of VAMED engineering company were analysed of one government owned tertiary hospital in South-Eastern Nigeria. Thirty nine causes/repair service report cases were studied and survey of radiologic equipment down time between 2013 and 2014. The radiologic equipment failures were categorized according to a factor model (nine failure mode) by radiographer, medical physicist, and repair technician. Ethical approval was obtained from the study institution and data was analysed using SPSS version 20.0. Descriptive statistic failure rate (frequency) and failure ratio (percentage) were deployed in the analysis. Results: The results show that 20 (90.90%) equipment were state-of-the-art with age range of 2 to 9 years as at November, 2016. The major manufacturers of the radiologic equipment were used were General Electric (GE) 10 (45.4%) and Aloka 4 (18.1%). The radiologic equipment (General purpose static X-ray machine, Mobile Xray, C-arm fluoroscopy, Conventional Fluoroscopy, Magnetic Resonance Imaging scanner, Computed Tomography scanner, Mammography, Ultrasound Machines) were introduced under different conditions (generations) from batch 1 to batch 4; before VAMED project, VAMED project and after VAMED project respectively between 2000 and 2014. The downtime of radiology equipment was 1 week to 9 months. The radiology department had comprehensive preventive and curative maintenance of radiology equipment with storage of spare parts. The common causes of radiological equipment failure based on 9 chronological categories, which are preventable include: Environmental stress 26 (69.23%) majorly unstable power supply; inappropriate handling and inadequate maintenance 5 (12.5%) respectively. The results showed that 38 (97.4%) of 39 were preventable causes of failure. The major specific causes of periodic radiological equipment break down was defective fuses 8 (20.51%), defective cable 5 (12.82%), lack of preventive maintenance 5 (12.82%), and loose cables 4 (10.26). Conclusion: The major causes of radiology equipment failure were environmental factors (unstable power supply). Majority of the causes were preventable with comprehensive maintenance policy. This indicated absence of end-users involvement in the process of planning of preventive and curative maintenance policy, and user awareness of such policy existence. This may have accounted for the high rate of equipment failure and long downtime of radiology equipment even during stable stage of the equipment.
Authors and Affiliations
Nwobi IC, Nzotta CC, Obotiba AD, Luntsi G
Keywords
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- EP ID EP243665
- DOI 10.9790/0853-1610058290
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