To calculate the risks associated with major accident hazard pipelines in the UK a computer code, MISHAP01 (Model for the estimation of Individual and Societal risk from HAzards of Pipelines), is used. The aim was to rewrite MISHAP01 and PipelineRiskAT within a single program to facilitate the implementation of future improvements to the model.
This report summarises all three aspects of the model updates (solution method, science changes and data updates) and provides an overview of the results obtained compared to the original version of PIPIN.
The objectives of this project were to investigate the impact on the calculated failure rates as a result of changes to the data within PIPIN. These changes were required to ensure that the input data was representative of UK pipelines by ensuring that all of the latest available information was being used.
The aims of this project were to investigate the impact on the calculated failure rates as a result of changes to the science within PIPIN. The changes had been suggested after the model was independently reviewed.
The objective of this project was to produce a Monte Carlo version of the third party activity model within PIPIN. There are currently limitations with the existing model and its FORM/SORM solution method and it was felt a new approach was required.