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RISKWISE™ Newsletter
Issue 11 - January 2007
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RISKWISE for BoilersTM used at Fayette Power Station in Texas  Fayette Power Station situated near La Grange in Texas operates three units capable of generating 1,641 MW of electricity. Lower Colorado River Authority (LCRA) operates all three units. Units 1 and 2 (each 598 MW) were constructed in 1979 and 1980 respectively. Unit 3 (445 MW) was completed in 1988. RISKWISE for BoilersTM was used to develop and optimize the outage workscope for the boiler units.  The pre-outage methodology takes the data collected by the assessment team and allows the team to evaluate what-if scenarios for all the major boiler components, varying outage intervals, inspection and repair workscopes and operating conditions. During the outage phase, areas identified as potential problems are addressed within the NDT inspection and maintenance activity. During the post-outage phase, the results and findings of the inspection together with details of any repairs are fed back into RISKWISE for BoilersTM and the cycle starts again.  RISKWISE for BoilersTM was also used to prioritize the various LCRA Units. It helped compare one unit to the next and was used to schedule future outages, upgrades and repairs. It provided optimized recommendations for:
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Taipower buys RISKWISETM and CRACKWISE© The state-run Taiwan Power Company (Taipower) is responsible for production and distribution of electric power in Taiwan. To assist the company in managing plant lifetime RISKWISE for BoilersTM and Crackwise© software tools were supplied together with their respective training courses. |
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RISKWISE for BoilersTM Version 4 incorporates NERC-GADS data  The North American Electric Reliability Corporation (NERC) has been compiling the Generator Availability Data System (GADS) for many years now. This system provides availability and reliability statistics to the power industry on an item by item basis. GADS data are compiled annually and TWI has now incorporated this data in the new Version 4 of RISKWISE for BoilersTM to provide a tool for the initial screening and benchmarking of power plant. Version 4 also includes several new quantitative and automated features which speed up the implementative process for boilers and HRSGs. |
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Alumina refinery maintains environmental standards  Recent RISKWISE Licencees, Aughinish Alumina, Ireland, have begun an RBI implementation process throughout their refinery's storage tanks using RISKWISE for TanksTM. The objective of the RBI process was to prioritise and focus resources to maintain their environmental commitments, improve plant safety and optimise resource allocation. The initial study focused on their storage tanks and RBI will eventually be rolled out throughout their process equipment and pipelines with a view to implement RISKWISETM on their CHP (Combined Heat and Power) plant. Initial risk audits were conducted under the guidance of TWI's RBI engineers and highlighted some areas for simple but effective improvements. Aughinish will now complete and maintain the risk assessments themselves with remote support and periodic auditing from TWI. Background on Aughinish
Aughinish Alumina is an alumina refinery based on Aughinish Island on the Shannon Estuary near Foynes in Co. Limerick, Ireland. It employs 500 people and about 200 contractors in an operation that sees about 1.8 million tonnes of alumina (a white powder) being extracted from imported bauxite each year. The alumina is exported to aluminium smelters around Europe and elsewhere. Aughinish is in production since 1983 and injects about €90 million each year into the local economy. It is owned by Glencore, a Swiss metal trading and production company. |
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RISKWISETM gets high visibility at EPRI conference RISKWISETM was presented by TWI at an Electric Power Research Institute (EPRI) Conference on Advances in Condition and Remaining Life Assessment of Fossil Power Plants held in Louisville, Kentucky in October 2006. The paper, entitled "Optimized Outage Planning of Fossil Boilers using RISKWISE Risk-Based Inspection Software" was jointly authored by LCRA, Alstom and TWI. Following the presentation, interest was expressed by several utility representatives present. Discussions subsequently took place with EPRI and proposals are in process to utilities. For further information and a copy of the presentation material, please contact TWI's North American office: |
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