Title
Validating the calculated reliability and availability in Dutch storm surge barriers (and other infrastructural works)
Author
Kleijn van Willigen, G.K.
van Meerveld, H.
Publication year
2016
Abstract
The reliability and availability of the Dutch storm surge barriers are calculated by probabilistic risk assessment and various underlying risk analysis methods. These calculations, however, focus on the numerical probability of the storm surge barrier functioning adequately, and the implementation of the many constraints from the risk analysis is merely an implicit factor. This includes constraints varying between whether the set repair times are feasible and whether the organization is capable of managing the asset adequately. Thus, the resulting reliability and availability figures should be validated, verifying the checks and balances on the behavior of the asset manager in terms of the performance of the maintenance and operational processes, but also the quality and knowledgeability of the maintenance and operational teams, among other checkpoints. In other words, the conformability of the organization should be verified during the performance assessment, in order to validate the risk analysis. Within Rijkswaterstaat, and for specific use at the storm surge barriers, a tool has been developed for an internal audit on the resilience of both the organization and the constraints following from the risk analysis – the compass. This paper focusses on the approach Rijkswaterstaat has chosen for the review of the validity of a risk analysis, including the adaptation of ISO and auditing standards, specific check points on risk analysis matters and the self-auditing regime that Rijkswaterstaat proposes for the storm surge barriers and their performance analysis
Subject
Fluid & Solid Mechanics
SR - Structural Reliability
TS - Technical Sciences
Buildings and Infrastructures
Architecture and Building
2015 Urbanisation
Self-auditing tool
Risk-based asset management
Storm surge barriers
Performance assessment
Validation of risk analyses
To reference this document use:
http://resolver.tudelft.nl/uuid:e0b23353-2cf0-4f4a-b27e-5648f4eec331
TNO identifier
567427
Source
The 49th ESReDA Seminar: Innovation through Human Factors in Risk Assessment and Maintenance. Brussels, Belgium, 1-15
Document type
conference paper