Topic:"Infrastructure Planning" in M03626

Low Temperature Superheater (L TSH): Tube, tube bend and shield upgrades - $350,000 The quantity of tubes, tube bends and shields to be replaced was confirmed during the detailed inspections during the Unit 1 outage in 2010. Tubes and tube...

AI summary The document outlines various boiler refurbishment projects at Lingan 1, including upgrades to the Low Temperature Superheater, High Temperature Superheater, and the Back Pass Division Wall. These projects aim to mitigate risks of tube failures, improve tube protection, and ensure compliance with ASME specifications.

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.

The North Waterwall was surveyed from 385' -431'. All IR's were inspected with twenty-eight areas {28} for a total of one hundred five inches {105"} identified for pad weld overlay. Areas under 0.140" at IR's were repaired. t .. ;, The Sou...

AI summary The document details the inspection and repair of various sections of waterwalls and corners at a generating station, including measurements and repair actions taken based on wall thickness assessments. The repairs involved pad weld overlay and were inspected using Color Contrast Magnetic Particle Inspection.

LTSH-3 - F Section This section was surveyed with six {6} areas for a total of sixteen inches { 16"} identified and repaired by pad weld overlay. One hundred thirty-seven {137} shields were identified for replacement. These shields were no...

AI summary This section of the document discusses repairs made to a pipeline, including six areas surveyed and sixteen inches of damage identified and repaired using pad weld overlay. One hundred thirty-seven shields were identified for replacement but were not replaced.

It is of concern to the Board that the under-scoping of this project was because the nondestructive testing (NOT) did not detect the full extent of the required work. NSPI may want to consider reviewing its NOT protocols to see if the accu...

AI summary The Board is concerned about the under-scoping of a project due to nondestructive testing (NOT) not detecting the full extent of required work. It approves an increase of $1,157,009 in the cost of the Work Order, deeming the over-expenditure warranted.