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51313-02744-Tank RBI—Pitfalls and Opportunities

Picture for Tank RBI—Pitfalls and Opportunities
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Product Number: 51313-02744-SG
ISBN: 02744 2013 CP
Author: Mauricio Olivares
Publication Date: 2013
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$20.00
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Risk Based Inspection (RBI) of Above-Ground Storage Tanks is a technology for determining the optimal run length of a tank before a costly and time-consuming internal inspection is required. There are various methods for calculating appropriate inspection intervals which rely on risk models. The risk calculations are generally based on the tank’s design operation and corrosion/inspection history.

However there is little published material giving guidance on actual quantitative models that can be used effectively to calculate risk. Probability and consequences of failure for tanks require a very different and widely varying set of calculations than pressure vessels and piping and there are a number of decisions that must be made in the calculation which may have a significant impact on the results.

The purpose of this paper is to overview some of the nuances associated with the calculations used to perform tank RBI. It also explains the effect of each variable on the tank's risk by performing a sensitivity analysis.
 

Risk Based Inspection (RBI) of Above-Ground Storage Tanks is a technology for determining the optimal run length of a tank before a costly and time-consuming internal inspection is required. There are various methods for calculating appropriate inspection intervals which rely on risk models. The risk calculations are generally based on the tank’s design operation and corrosion/inspection history.

However there is little published material giving guidance on actual quantitative models that can be used effectively to calculate risk. Probability and consequences of failure for tanks require a very different and widely varying set of calculations than pressure vessels and piping and there are a number of decisions that must be made in the calculation which may have a significant impact on the results.

The purpose of this paper is to overview some of the nuances associated with the calculations used to perform tank RBI. It also explains the effect of each variable on the tank's risk by performing a sensitivity analysis.
 

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