Why do this project? This project is required to maintain the long term reliability of the boiler and mitigate the risk of unplanned outages due to L TSH, HTSH and division wall tube leaks.
AI summary This project is necessary to ensure the long-term reliability of the boiler and reduce the risk of unplanned outages caused by leaks in L TSH, HTSH, and division wall tubes.
Why do this project now? Some of the tubes to be inspected and replaced are difficult to access and sufficient time during a planned outage is required to complete repairs or replacements. A planned outage is necessary to undertake inspect...
AI summary The planned outage for Unit 1 in 2010 is necessary to inspect and repair or replace difficult-to-access boiler tubes, tube bends, and shields, which requires sufficient time during the outage.
Why do this project this way? The work will be completed in the most cost effective manner to extend the life of the L TSH, HTSH and division wall. By replacing the tubes, tube bends and shields, the risk of tube leaks and unplanned outage...
AI summary The project aims to extend the life of the L TSH, HTSH, and division wall by replacing tubes, tube bends, and shields to reduce the risk of leaks and unplanned outages in Unit 1 boiler. These upgrades are necessary based on boiler life cycle assessments.
Reason for Variance / Over Expenditure / Final Costing 14954263 The original project scope in 2010 ACE was based primarily on replacement and repairs of L TSH and HTSH tubing. Boiler inspection results from late 2009 indicated that tube re...
AI summary The original 2010 ACE project scope involved replacing and repairing L TSH and HTSH tubing. However, boiler inspections and tube failures, including a leak in January 2010, necessitated additional work to address increased ash erosion and reduce the risk of future leaks and unplanned outages, leading to a $640,000 variance.
Summary The utility boiler for Unit # 1 at Lingan Generating Station was shut down as part of the Planned Annual Maintenance in May 2010. The major scope of work during this outage was the replacement of the Division Wall on 6 Y2 floor as...
AI summary During the Planned Annual Maintenance in May 2010, the utility boiler for Unit #1 at Lingan Generating Station was shut down. Major work included replacing the Division Wall on the 6 Y2 floor, tube replacements in SH-S and LTSH-l, replacement of the flow nozzle in the 10" feed water line, and replacement of the SH-5 Safety Valve. Pad welding was also performed in both the Upper and Lower Furnaces.
Conclusions and Recommendations During the next Planned Shutdown, the following areas should be surveyed in addition to the normal boiler survey: - -Remove bars and screens and inspect LTSH-1 East-side bends. - -Install shields on 2 nd tub...
AI summary The document outlines additional survey areas during the next Planned Shutdown at the Lingan Generating Station, including inspecting LTSH-1 East-side bends, installing shields on a specific tube, and redoing a previous RH Finish survey. The text includes contact information for Nova Scotia Power Inc.
- 7 2-H-I sections wall penetration tubes). 1 Request IR-4: 2 3 Are consistent procedures being followed in the periodic internal inspections such that 4 most/all tubes approaching end of useful life should be detected in a timely manner?...
AI summary The document outlines responses to information requests regarding the inspection and replacement of boiler tubes. It confirms consistent inspection procedures, no changes in operating procedures, and that the tubes have exceeded their typical 20-year life expectancy.
Disclaimer: These summaries were generated by AI from the filings they describe. We take care to make them accurate, but errors are possible - and they aren't advice. Only the filings themselves are the record: if you're relying on something here, confirm it against the source documents or the Nova Scotia Energy Board's own record. Full disclaimer →