Classification Based on Performance Criteria Determined from Risk Assessment Methodology

Author(s)                 DNV
Publisher DNV
Date 2008/2011
Pages 13
Format pdf
Size 1 Mb

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   The present document presents the service specification released by DNV Class Society for classification of offshore installations on the basis of the various risk assessment techniques. This would mean that the acceptability of design as well as of the extent of verification are basing on rthe isk assessment rather than reliance upon the prescriptive rules. The primary objective of such approach is to provide an alternative route for classification of individual and/or novel designs whilst trying to maintain an acceptable level of safety and integrity that could ve considered equivalent to that achieved under more traditional class societies' rules. Though not mentioned specifically through the present document, avoidance of adverse environmental consequences must be taken into account as necessary, to the extent covered by traditional class rules. The requirements provided in this publication shall apply to the fixed offshore installations, including floating ones designed for use at a fixed location. The service is alternative or complementary to classification based on other DNV service specifications (DNV-OSS series) for such installations. Where classification based on risk assessment is applied only to a part of an installation, the remainder of the installation shall meet the requirements of other applicable DNV rules. In such cases, it is critically important to ensure a safe interface between the two classification methods i.e. that design based on risk assessment does not have a negative effect upon safety or integrity under classification rules and vice versa...

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