energize oil & gas – issue 01-2013 - GL Group

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offshore storage Gas for Britain’s Winter Days Storing natural gas in depleted subsea fields involves onshore equipment that operates under enormous pressure. GL Noble Denton develops the required inspection regimen Centrica Storage Limited (CSL) operates a large natural gas storage facility about 18 miles (29 km) off the east coast of Yorkshire to meet seasonal peak demands in the UK. The Rough facility, a partially depleted gas field under the North Sea, is linked to the onshore gas processing terminal at Easington, where CSL has developed a reception facility to accommodate production from the new offshore York field. The easington gas terminal can inject more than 125 million cubic metres per day into the subsea storage facility per day, Energy. UK gas storage facilities and receiving terminals operated by CSL. which represents over 70 per cent of UK’s storage capacity and can meet approximately 10 per cent of the nation’s peak daily demand. As part of the development of the Easington Caythorpe facility, all the York onshore assets required Written Schemes of Examination (WSoEs) to be in place prior to first gas to ensure conformity with the applicable statutory Bains Langeled Easington requirements, including the Gas Safety (Management) Regulations 1996 and the Pressure Systems Safety Regulations 2000. CSL awarded a project to GL Noble Denton to develop a suite of Written Schemes of Examination for the Easington assets. The project included the following activities: Identification of the York assets that required a Written Scheme of Examination Obtaining and reviewing the relevant design documents to develop corrosion risk assessments (CRA) abstract for each asset, highlighting the main degradation mechanisms and priority areas for inspection Reviewing the outputs from the corrosion risk assessments to produce baseline inspection work Pressure system inspections must follow a Written Scheme of Examination Requirements for gas terminals are especially strict scopes and inspection reports to measure the original key integrity data for each asset Working with CSL’s engineers to develop a methodology for risk-based Inspection (RBI), and a procedure compliant with API 580/581 and CSL’s specific requirements Completing a detailed RBI study for each of the assets in accordance with the agreed RBI procedure Producing Written Schemes of Examination based on the RBI results Expertise Provided GL Noble Denton conducted a series of workshops that resulted in the development of a risk-based inspection (RBI) procedure in accordance with API Rough 580/581 and CSL’s specific requirements. The RBI procedure, which was used to define Baird and agree the Terms of Reference and methodology for the RBI study, in addition to the Written Schemes of Examination, included the following: Probability of failure calculation methods Consequence of failure assessment methods Methods for deriving consequence Inspection strategy GL Noble Denton tailored its Galiom TM RBI/ AIM software package and used the relevant input data to ensure that the RBI study and Written Schemes of Examination were generated in accordance with the agreed RBI Procedure. 26 energıze
Integrity Management Software GL Noble Denton’s Galiom, an integrated environment for risk-based asset management of offshore and onshore facilities, supports essential integrity management (IM) processes: Risk assessment and IM planning Inspection, monitoring and testing Integrity assessment Mitigation, intervention and repair Management of change Back-up. The Easington terminal processes gas for the Rough storage facility. Integrity dashboard Galiom benefits Delivers improved visibility of asset criticality, risk and technical integrity Identifies the likelihood and consequences of failures to mitigate major accident risks Allows operators to benefit from optimised inspection schedules cutting maintenance, downtime and inspection costs Demonstrates compliance with management procedures Predicts equipment life and inspection dates using corrosion rates and asset criticality Improves decision-making on repair, replacement and decommissioning Highlights operating integrity issues and can guide a proactive inspection and maintenance methodology GALIOM TM . Asset integrity management (AIM) software for operational risk and integrity management. Outcome and Benefit Through the successful completion of the project, GL Noble Denton has enabled CSL to: Commence production from the York field within their specified programme by ensuring that the Written Schemes of Examination were prepared and delivered within the agreed timescales Implement an RBI methodology tailored to their requirements, and prepare a suite of Written Schemes of Examination that optimise the frequency and operational costs associated with the York inspection programme All the work was completed on schedule to meet CSL’s overall strategic requirements for the project. GL Group Expert: Azrul Hilmi Consultant Phone: +44 1509 282024 E-Mail: azrul.hilmi@gl-group.com RC 01/2013 27
Page 1 and 2: GL Noble Denton energıze e nergy.
Page 3 and 4: editorial To Our Readers Confidence
Page 5 and 6: profile inbrief GL Noble Denton in
Page 7 and 8: The Americas, Asia-Pacific, the Mid
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Page 11 and 12: BioGas suite of web-enabled softwar
Page 13 and 14: 3.7% 12.9% 45.8% Risk management 37
Page 15 and 16: ise by 50% or more rise by 25% or m
Page 17 and 18: Network. 4,000 technical experts se
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Page 21 and 22: The demand for engineering services
Page 23 and 24: CNPC. China National Petroleum Corp
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Page 31 and 32: Precarious. The sheer dimensions of
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Page 37 and 38: Figure 1. Short-term survival test
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Page 45 and 46: IADC GL Noble Denton Expert recogni
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energize oil & gas – issue 01-2013 - GL Group

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