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Category: Pipelines

RR1040 – Rewriting MISHAP: The development of MISHAP12

Wednesday, June 15, 2016

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.

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RR1039 – Summary of the rewrite of HSE’s PIPeline INtegrity (PIPIN) model

Friday, June 10, 2016

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.

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RR1038 – Data updates to HSE’s PIPeline INtegrity model (PIPIN)

Thursday, June 9, 2016

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.

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RR1037 – Science updates to HSE’s PIPeline INtegrity model (PIPIN)

Thursday, June 9, 2016

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.

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RR1036 – Rewriting the PIPIN code to use a Monte Carlo solution approach

Wednesday, June 8, 2016

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.

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RR1035 – Update of pipeline failure rates for land use planning assessments

Friday, June 3, 2016

HSE uses a model, MCPIPIN (Monte Carlo PIPeline INtegrity), to determine failure frequencies for major hazard pipelines. It uses two models; one based on operational experience data and a predictive model. The historical failure rates used in the operational model are over 10 years old. A review took place to update this data.

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RR1034 – Review of the event tree structure and ignition probabilities used in HSE’s pipeline risk assessment code MISHAP

Wednesday, June 1, 2016

HSE uses the MISHAP (Model for the estimation of Individual and Societal risk from HAzards of Pipelines) model to calculate risks associated with major hazard pipelines in GB. The review took place in response to the UK Onshore Pipeline Operators Association (UKOPA) challenging some of the assumptions and methods currently used within the tool.

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RR1072 – Investigations into the immediate and underlying causes of failures of offshore riser emergency shutdown valves

Wednesday, December 23, 2015

Riser emergency shutdown valve (RESDV) failures, whether arising from a test or a real demand, are reportable to HSE under RIDDOR and a preliminary survey found approximately 180 cases of failure. Given the criticality of RESDVs to offshore safety, it was determined that the reasons for these occurrences should be investigated.

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National Grid fined £2million over failings related to death of schoolboy

Tuesday, December 8, 2015

One of the UKs biggest gas distributers was sentenced today after admitting safety failings in relation to the death of a young boy.

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Shell UK sentenced over major oil release

Tuesday, November 24, 2015

Oil and gas production company Shell U.K. Limited, has been sentenced after admitting failures that led to an oil leak in the North Sea.

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Major Hazard Safety Performance Indicators in the UK Onshore Gas and Pipelines Industries – Annual Report 2013/14

Monday, July 20, 2015

This report presents a broad range of safety performance indicators (SPIs) from across Great Britain’s gas transmission, distribution and other hazardous pipelines sectors.

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Farm fined for fracturing gas pipeline

Wednesday, June 17, 2015

A Lincolnshire based farm, run by W. & A.C. Rose (Farms) Ltd in Fillingham was fined for serious safety failings that led to a gas pipe being fractured, putting lives at risk.

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