Speaker
Description
The establishment of the Comprehensive Nuclear-Test-Ban (CTBT) International Monitoring System (IMS) network has progressed at an impressive pace in the last 25 years: to date, 90% of the network has been built and is operational. While major efforts are made by the Provisional Technical Secretariat (PTS) to complete the establishment of the network, the challenge of sustaining the IMS facilities, maintaining their high level performance, constitutes a major focus for the PTS. Equipment, infrastructure, power, communication and lightning protection systems are among several station components experiencing ageing and obsolescence and need to be timely replaced to minimize the risk of data loss. Keeping abreast of new technological and engineering solutions to support and rejuvenate the IMS network, thus restarting the lifecycle of IMS facilities, is a crucial component of the PTS activities. Analysing the past station failures and identifying the causes of data loss is another key activity in support of IMS sustainment: the PTS has been engaged for several years in this study, using the Failure Mode, Effects and Criticality Analysis approach. This work presents an overview of the results achieved to date using failure analysis and discusses the existing challenges associated to the current methodology, proposing potential future perspectives.
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