The BI601 chimney is a 61m concrete refractory brick lined stack situated within the COD2 Unit.
Establish site facilities (office, welfare, messing and lay down area for equipment and materials) and safety exclusion zone.
Reinstate existing materials winch system (external), load test and erect scaffolding, working deck and fan deck at smoke band level.
Load out fan deck with scaffolding equipment to allow erection of additional scaffolding during outage.
Ensure stack base is cleared of all stored items.
Erect scaffolding tower access within stack base grade to underside of false floor 14m.
Fit tracks for brick bin loading system at grade.
Install steeplejack ladders from fan to stack summit and install full circumferential scaffolding 1m from stack summit and internal platform cathead/winch support.
Open false floor hatch and clear debris. Erect internal scaffolding and remove baffle wall. Install internal motorised – access platform c/w debris chute. Remove refractory brick work from barrel 1. Reinstate barrels 1 c/w new cills/lintels and gas seal.
Carry out any remedial pointing repairs and gas seal repairs.
Install new s/s cap venture.
Paint smoke band.
Replace false floor hatch.
Prepare and submit completion report including photographs of repair works.
Remove internal access, return winch to service externally.
Strip down temporary works to fan deck level and store.